XEmacs 21.4.15

[chise/xemacs-chise.git.1] / man / xemacs-faq.texi

\input texinfo.tex      @c -*- mode: texinfo; coding: iso-2022-8 -*-
@c %**start of header
@setfilename ../info/xemacs-faq.info
@settitle Frequently asked questions about XEmacs
@setchapternewpage off
@c %**end of header
@finalout
@titlepage
@title XEmacs FAQ
@subtitle Frequently asked questions about XEmacs @* Last Modified: $Date: 2003/10/09 19:16:02 $
@sp 1
@author Tony Rossini <rossini@@u.washington.edu>
@author Ben Wing <ben@@xemacs.org>
@author Chuck Thompson <cthomp@@xemacs.org>
@author Steve Baur <steve@@xemacs.org>
@author Andreas Kaempf <andreas@@sccon.com>
@author Christian Nyb@o{} <chr@@mediascience.no>
@author Sandra Wambold <wambold@@xemacs.org>
@page
@end titlepage

@ifinfo
@dircategory XEmacs Editor
@direntry
* FAQ: (xemacs-faq).            XEmacs FAQ.
@end direntry
@end ifinfo

@node Top, Introduction, (dir), (dir)
@top XEmacs FAQ

This is the guide to the XEmacs Frequently Asked Questions list---a
compendium of questions and answers pertaining to one of the finest
programs ever written.  XEmacs is much more than just a Text Editor.

This FAQ is freely redistributable.  This FAQ is distributed in the hope
that it will be useful, but WITHOUT ANY WARRANTY; without even the
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

If you have a Web browser, the official hypertext version is at
@iftex
@*
@end iftex
@uref{http://www.xemacs.org/FAQ/xemacs-faq.html}

@ifset CANONICAL
@html
This document is available in several different formats:
@itemize @bullet
@item
@uref{xemacs-faq.txt, As a single ASCII file}, produced by
@code{makeinfo --no-headers}
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@uref{http://www.tug.org, TeX.}
@item
As a PostScript file @uref{xemacs-faq-a4.ps, in A4 format},
as well as in @uref{xemacs-faq-letter.ps, letter format}
@item
In html format, @uref{xemacs-faq_1.html, split by chapter}, or in
@uref{xemacs-faq.html, one monolithic} document.
@item
The canonical version of the FAQ is the texinfo document
@uref{xemacs-faq.texi, man/xemacs-faq.texi}.
@item
If you do not have makeinfo installed, you may @uref{xemacs-faq.info,
download the faq} in info format, and install it in @file{<XEmacs
library directory>/info/}. For example in
@file{/usr/local/lib/xemacs-21.4/info/}.

@end itemize

@end html

@end ifset

@c end ifset points to CANONICAL

@menu
* Introduction::        Introduction, Policy, Credits.
* Installation::        Installation and Trouble Shooting.
* Customization::       Customization and Options.
* Subsystems::          Major Subsystems.
* Miscellaneous::       The Miscellaneous Stuff.
* MS Windows::          XEmacs on Microsoft Windows.
* Current Events::      What the Future Holds.
* Legacy Versions::     New information about old XEmacsen.

@detailmenu

 --- The Detailed Node Listing ---

Introduction, Policy, Credits

* Q1.0.1::      What is XEmacs?
* Q1.0.2::      What is the current version of XEmacs?
* Q1.0.3::      Where can I find it?
* Q1.0.4::      Why Another Version of Emacs?
* Q1.0.5::      Why Haven't XEmacs and GNU Emacs Merged?
* Q1.0.6::      Where can I get help?
* Q1.0.7::      Where are the mailing lists archived?
* Q1.0.8::      How do you pronounce XEmacs?
* Q1.0.9::      What does XEmacs look like?
* Q1.0.10::     Is there a port of XEmacs to Microsoft ('95 or NT)?
* Q1.0.11::     Is there a port of XEmacs to the Macintosh?
* Q1.0.12::     Is there a port of XEmacs to NextStep?
* Q1.0.13::     Is there a port of XEmacs to OS/2?
* Q1.0.14::     Where can I get a printed copy of the XEmacs users manual?

Policies:
* Q1.1.1::      What is the FAQ editorial policy?
* Q1.1.2::      How do I become a Beta Tester?
* Q1.1.3::      How do I contribute to XEmacs itself?

Credits:
* Q1.2.1::      Who wrote XEmacs?
* Q1.2.2::      Who contributed to this version of the FAQ?
* Q1.2.3::      Who contributed to the FAQ in the past?

Internationalization:
* Q1.3.1::      What is the status of internationalization support aka MULE (including Asian language support?
* Q1.3.2::      How can I help with internationalization?
* Q1.3.3::      How do I type non-ASCII characters?
* Q1.3.4::      Can XEmacs messages come out in a different language?
* Q1.3.5::      Please explain the various input methods in MULE/XEmacs
* Q1.3.6::      How do I portably code for MULE/XEmacs?
* Q1.3.7::      How about Cyrillic Modes?
* Q1.3.8::      Does XEmacs support Unicode?
* Q1.3.9::      How does XEmacs display Unicode?

Getting Started:
* Q1.4.1::      What is an @file{init.el} or @file{.emacs} and is there a sample one?
* Q1.4.2::      Can I use the same @file{init.el}/@file{.emacs} with the other Emacs?
* Q1.4.3::      Any good XEmacs tutorials around?
* Q1.4.4::      May I see an example of a useful XEmacs Lisp function?
* Q1.4.5::      And how do I bind it to a key?
* Q1.4.6::      What's the difference between a macro and a function?

Installation and Trouble Shooting

* Q2.0.1::      Running XEmacs without installing.
* Q2.0.2::      XEmacs is too big.
* Q2.0.3::      Compiling XEmacs with Netaudio.
* Q2.0.4::      Problems with Linux and ncurses.
* Q2.0.5::      Do I need X11 to run XEmacs?
* Q2.0.6::      I'm having strange crashes.  What do I do?
* Q2.0.7::      Libraries in non-standard locations.
* Q2.0.8::      can't resolve symbol _h_errno
* Q2.0.9::      Where do I find external libraries?
* Q2.0.10::     After I run configure I find a coredump, is something wrong?
* Q2.0.11::     XEmacs can't resolve host names.
* Q2.0.12::     Why can't I strip XEmacs?
* Q2.0.13::     I don't need no steenkin' packages.  Do I?
* Q2.0.14::     How do I figure out which packages to install?
* Q2.0.15::     EFS fails with "500 AUTH not understood" (NEW)
* Q2.0.16::     Cygwin XEmacs won't start: cygXpm-noX4.dll was not found (NEW)

Trouble Shooting:
* Q2.1.1::      XEmacs just crashed on me!
* Q2.1.2::      Cryptic Minibuffer messages.
* Q2.1.3::      Translation Table Syntax messages at Startup.
* Q2.1.4::      Startup warnings about deducing proper fonts?
* Q2.1.5::      XEmacs cannot connect to my X Terminal.
* Q2.1.6::      XEmacs just locked up my Linux X server.
* Q2.1.7::      HP Alt key as Meta.
* Q2.1.8::      got (wrong-type-argument color-instance-p nil)!
* Q2.1.9::      XEmacs causes my OpenWindows 3.0 server to crash.
* Q2.1.10::     Warnings from incorrect key modifiers.
* Q2.1.11::     Can't instantiate image error... in toolbar
* Q2.1.12::     Regular Expression Problems on DEC OSF1.
* Q2.1.13::     HP/UX 10.10 and @code{create_process} failure
* Q2.1.14::     @kbd{C-g} doesn't work for me.  Is it broken?
* Q2.1.15::     How to debug an XEmacs problem with a debugger.
* Q2.1.16::     XEmacs crashes in @code{strcat} on HP/UX 10.
* Q2.1.17::     @samp{Marker does not point anywhere}.
* Q2.1.18::     XEmacs is outputting lots of X errors.
* Q2.1.19::     XEmacs does not follow the local timezone.
* Q2.1.20::     @samp{Symbol's function definition is void: hkey-help-show.}
* Q2.1.21::     [This question intentionally left blank]
* Q2.1.22::     XEmacs seems to take a really long time to do some things.
* Q2.1.23::     Movemail on Linux does not work for XEmacs 19.15 and later.
* Q2.1.24::     XEmacs won't start without network.
* Q2.1.25::     After upgrading, XEmacs won't do `foo' any more!

Customization and Options

* Q3.0.1::      What version of Emacs am I running?
* Q3.0.2::      How do I evaluate Elisp expressions?
* Q3.0.3::      @code{(setq tab-width 6)} behaves oddly.
* Q3.0.4::      How can I add directories to the @code{load-path}?
* Q3.0.5::      How to check if a lisp function is defined?
* Q3.0.6::      Can I force the output of @code{(face-list)} to a buffer?
* Q3.0.7::      Font selections don't get saved after @code{Save Options}.
* Q3.0.8::      How do I make a single minibuffer frame?
* Q3.0.9::      What is @code{Customize}?

X Window System & Resources:
* Q3.1.1::      Where is a list of X resources?
* Q3.1.2::      How can I detect a color display?
* Q3.1.3::      [This question intentionally left blank]
* Q3.1.4::      [This question intentionally left blank]
* Q3.1.5::      How can I get the icon to just say @samp{XEmacs}?
* Q3.1.6::      How can I have the window title area display the full path?
* Q3.1.7::      @samp{xemacs -name junk} doesn't work?
* Q3.1.8::      @samp{-iconic} doesn't work.

Textual Fonts & Colors:
* Q3.2.1::      How can I set color options from @file{init.el}/@file{.emacs}?
* Q3.2.2::      How do I set the text, menu and modeline fonts?
* Q3.2.3::      How can I set the colors when highlighting a region?
* Q3.2.4::      How can I limit color map usage?
* Q3.2.5::      My tty supports color, but XEmacs doesn't use them.
* Q3.2.6::      Can I have pixmap backgrounds in XEmacs?

The Modeline:
* Q3.3.1::      How can I make the modeline go away?
* Q3.3.2::      How do you have XEmacs display the line number in the modeline?
* Q3.3.3::      How do I get XEmacs to put the time of day on the modeline?
* Q3.3.4::      How do I turn off current chapter from AUC TeX modeline?
* Q3.3.5::      How can one change the modeline color based on the mode used?

Multiple Device Support:
* Q3.4.1::      How do I open a frame on another screen of my multi-headed display?
* Q3.4.2::      Can I really connect to a running XEmacs after calling up over a modem?  How?

The Keyboard:
* Q3.5.1::      How can I bind complex functions (or macros) to keys?
* Q3.5.2::      How can I stop down-arrow from adding empty lines to the bottom of my buffers?
* Q3.5.3::      How do I bind C-. and C-; to scroll one line up and down?
* Q3.5.4::      Globally binding @kbd{Delete}?
* Q3.5.5::      Scrolling one line at a time.
* Q3.5.6::      How to map @kbd{Help} key alone on Sun type4 keyboard?
* Q3.5.7::      How can you type in special characters in XEmacs?
* Q3.5.8::      [This question intentionally left blank]
* Q3.5.9::      How do I make the Delete key delete forward?
* Q3.5.10::     Can I turn on @dfn{sticky} modifier keys?
* Q3.5.11::     How do I map the arrow keys?

The Cursor:
* Q3.6.1::      Is there a way to make the bar cursor thicker?
* Q3.6.2::      Is there a way to get back the old block cursor where the cursor covers the character in front of the point?
* Q3.6.3::      Can I make the cursor blink?

The Mouse and Highlighting:
* Q3.7.1::      How can I turn off Mouse pasting?
* Q3.7.2::      How do I set control/meta/etc modifiers on mouse buttons?
* Q3.7.3::      Clicking the left button does not do anything in buffer list.
* Q3.7.4::      How can I get a list of buffers when I hit mouse button 3?
* Q3.7.5::      Why does cut-and-paste not work between XEmacs and a cmdtool?
* Q3.7.6::      How I can set XEmacs up so that it pastes where the text cursor is?
* Q3.7.7::      How do I select a rectangular region?
* Q3.7.8::      Why does @kbd{M-w} take so long?

The Menubar and Toolbar:
* Q3.8.1::      How do I get rid of the menu (or menubar)?
* Q3.8.2::      Can I customize the basic menubar?
* Q3.8.3::      How do I control how many buffers are listed in the menu @code{Buffers} list?
* Q3.8.4::      Resources like @code{Emacs*menubar*font} are not working?
* Q3.8.5::      How can I bind a key to a function to toggle the toolbar?

Scrollbars:
* Q3.9.1::      How can I disable the scrollbar?
* Q3.9.2::      How can one use resources to change scrollbar colors?
* Q3.9.3::      Moving the scrollbar can move the point; can I disable this?
* Q3.9.4::      How can I turn off automatic horizontal scrolling in specific modes?

Text Selections:
* Q3.10.1::     How can I turn off or change highlighted selections?
* Q3.10.2::     How do I get that typing on an active region removes it?
* Q3.10.3::     Can I turn off the highlight during isearch?
* Q3.10.4::     How do I turn off highlighting after @kbd{C-x C-p} (mark-page)?
* Q3.10.5::     The region disappears when I hit the end of buffer while scrolling.
* Q3.10.6::     Why is killing so slow?

Major Subsystems

* Q4.0.1::      How do I set up VM to retrieve remote mail using POP?
* Q4.0.2::      How do I get VM to filter mail for me?
* Q4.0.3::      How can I get VM to automatically check for new mail?
* Q4.0.4::      [This question intentionally left blank]
* Q4.0.5::      How do I get my outgoing mail archived?
* Q4.0.6::      I have various addresses at which I receive mail.  How can I tell VM to ignore them when doing a "reply-all"?
* Q4.0.7::      Is there a mailing list or FAQ for VM?
* Q4.0.8::      Remote mail reading with VM.
* Q4.0.9::      rmail or VM gets an error incorporating new mail.
* Q4.0.10::     How do I make VM stay in a single frame?
* Q4.0.11::     How do I make VM or mh-e display graphical smilies?
* Q4.0.12::     Customization of VM not covered in the manual or here.

Web browsing with W3:
* Q4.1.1::      What is W3?
* Q4.1.2::      How do I run W3 from behind a firewall?
* Q4.1.3::      Is it true that W3 supports style sheets and tables?

Reading Netnews and Mail with Gnus:
* Q4.2.1::      GNUS, (ding) Gnus, Gnus 5, September Gnus, Red Gnus, Quassia Gnus, argh!
* Q4.2.2::      [This question intentionally left blank]
* Q4.2.3::      How do I make Gnus stay within a single frame?
* Q4.2.4::      How do I customize the From: line?

Other Mail & News:
* Q4.3.1::      How can I read and/or compose MIME messages?
* Q4.3.2::      What is TM and where do I get it?
* Q4.3.3::      Why isn't this @code{movemail} program working?
* Q4.3.4::      Movemail is also distributed by Netscape?  Can that cause problems?
* Q4.3.5::      Where do I find pstogif (required by tm)?

Sparcworks, EOS, and WorkShop:
* Q4.4.1::      What is SPARCworks, EOS, and WorkShop
* Q4.4.2::      How do I start the Sun Workshop support in XEmacs 21?

Energize:
* Q4.5.1::      What is/was Energize?

Infodock:
* Q4.6.1::      What is Infodock?

Other Unbundled Packages:
* Q4.7.1::      What is AUC TeX?  Where do you get it?
* Q4.7.2::      Are there any Emacs Lisp Spreadsheets?
* Q4.7.3::      [This question intentionally left blank]
* Q4.7.4::      Problems installing AUC TeX
* Q4.7.5::      Is there a reason for an Emacs package not to be included in XEmacs?
* Q4.7.6::      Is there a MatLab mode?
* Q4.7.7::      Can I edit files on other hosts?

The Miscellaneous Stuff

* Q5.0.1::      How can I do source code highlighting using font-lock?
* Q5.0.2::      I do not like cc-mode.  How do I use the old c-mode?
* Q5.0.3::      How do I get @samp{More} Syntax Highlighting on by default?
* Q5.0.4::      How can I enable auto-indent and/or Filladapt?
* Q5.0.5::      How can I get XEmacs to come up in text/auto-fill mode by default?
* Q5.0.6::      How do I start up a second shell buffer?
* Q5.0.7::      Telnet from shell filters too much.
* Q5.0.8::      Why does edt emulation not work?
* Q5.0.9::      How can I emulate VI and use it as my default mode?
* Q5.0.10::     [This question intentionally left blank]
* Q5.0.11::     [This question intentionally left blank]
* Q5.0.12::     How do I disable gnuserv from opening a new frame?
* Q5.0.13::     How do I start gnuserv so that each subsequent XEmacs is a client?
* Q5.0.14::     Strange things are happening in Shell Mode.
* Q5.0.15::     Where do I get the latest CC Mode?
* Q5.0.16::     I find auto-show-mode disconcerting.  How do I turn it off?
* Q5.0.17::     How can I get two instances of info?
* Q5.0.18::     [This question intentionally left blank]
* Q5.0.19::     Is there something better than LaTeX mode?
* Q5.0.20::     Is there a way to start a new XEmacs if there's no gnuserv running, and otherwise use gnuclient?

Emacs Lisp Programming Techniques:
* Q5.1.1::      The difference in key sequences between XEmacs and GNU Emacs?
* Q5.1.2::      Can I generate "fake" keyboard events?
* Q5.1.3::      Could you explain @code{read-kbd-macro} in more detail?
* Q5.1.4::      What is the performance hit of @code{let}?
* Q5.1.5::      What is the recommended use of @code{setq}?
* Q5.1.6::      What is the typical misuse of @code{setq} ?
* Q5.1.7::      I like the @code{do} form of cl, does it slow things down?
* Q5.1.8::      I like recursion, does it slow things down?
* Q5.1.9::      How do I put a glyph as annotation in a buffer?
* Q5.1.10::     @code{map-extents} won't traverse all of my extents!
* Q5.1.11::     My elisp program is horribly slow.  Is there an easy way to find out where it spends time?

Sound:
* Q5.2.1::      How do I turn off the sound?
* Q5.2.2::      How do I get funky sounds instead of a boring beep?
* Q5.2.3::      What's NAS, how do I get it?
* Q5.2.4::      Sunsite sounds don't play.

Miscellaneous:
* Q5.3.1::      How do you make XEmacs indent CL if-clauses correctly?
* Q5.3.2::      [This question intentionally left blank]
* Q5.3.3::      How can I print WYSIWYG a font-locked buffer?
* Q5.3.4::      Getting @kbd{M-x lpr} to work with postscript printer.
* Q5.3.5::      How do I specify the paths that XEmacs uses for finding files?
* Q5.3.6::      [This question intentionally left blank]
* Q5.3.7::      Can I have the end of the buffer delimited in some way?
* Q5.3.8::      How do I insert today's date into a buffer?
* Q5.3.9::      Are only certain syntactic character classes available for abbrevs?
* Q5.3.10::     How can I get those oh-so-neat X-Face lines?
* Q5.3.11::     How do I add new Info directories?
* Q5.3.12::     What do I need to change to make printing work?

XEmacs on MS Windows

General Info:
* Q6.0.1::      What is the status of the XEmacs port to Windows?
* Q6.0.2::      What flavors of MS Windows are supported?  The list name implies NT only.
* Q6.0.3::      Are binaries available?
* Q6.0.4::      Can I build XEmacs on MS Windows with X support?  Do I need to?
* Q6.0.5::      I'd like to help out.  What do I do?
* Q6.0.6::      What are Cygwin and MinGW, and do I need them to run XEmacs?
* Q6.0.7::      What exactly are all the different ways to build XEmacs under Windows?

Building XEmacs on MS Windows:
* Q6.1.1::      What compiler/libraries do I need to compile XEmacs?
* Q6.1.2::      How do I compile the native port?
* Q6.1.3::      What do I need for Cygwin?
* Q6.1.4::      How do I compile under Cygwin?
* Q6.1.5::      How do I compile using MinGW (aka @samp{the -mno-cygwin flag to gcc})?
* Q6.1.6::      I decided to run with X.  Where do I get an X server?
* Q6.1.7::      How do I compile with X support?

Customization and User Interface:
* Q6.2.1::      How does the port cope with differences in the Windows user interface?
* Q6.2.2::      How do I change fonts in XEmacs on MS Windows?
* Q6.2.3::      Where do I put my @file{init.el}/@file{.emacs} file?
* Q6.2.4::      How do I get Windows Explorer to associate a file type with XEmacs?
* Q6.2.5::      Is it possible to print from XEmacs?

Miscellaneous:
* Q6.3.1::      Does XEmacs rename all the @samp{win32-*} symbols to @samp{w32-*}?
* Q6.3.2::      What are the differences between the various MS Windows emacsen?
* Q6.3.3::      XEmacs 21.1 on Windows used to spawn an ugly console window on every startup.  Has that been fixed?
* Q6.3.4::      What is the porting team doing at the moment?

Troubleshooting:
* Q6.4.1::      XEmacs won't start on Windows.
* Q6.4.2::      Why do I get a blank toolbar on Windows 95?
* Q6.4.3::      XEmacs complains "No such file or directory, diff"

What the Future Holds

* Q7.0.1::      What new features will be in XEmacs soon?
* Q7.0.2::      What's new in XEmacs 21.4?
* Q7.0.3::      What's new in XEmacs 21.1?
* Q7.0.4::      What's new in XEmacs 20.4?
* Q7.0.5::      What's new in XEmacs 20.3?
* Q7.0.6::      What's new in XEmacs 20.2?

New information about old XEmacsen.

XEmacs 21.1:
* Q8.0.1::      Gnus 5.10 won't display smileys in XEmacs 21.1.

@end detailmenu
@end menu

@node Introduction, Installation, Top, Top
@unnumbered 1 Introduction, Policy, Credits

Learning XEmacs is a lifelong activity.  Even people who have used Emacs
for years keep discovering new features.  Therefore this document cannot
be complete.  Instead it is aimed at the person who is either
considering XEmacs for their own use, or has just obtained it and is
wondering what to do next.  It is also useful as a reference to
available resources.

The previous maintainer of the FAQ was @email{rossini@@biostat.washington.edu,
Anthony Rossini}, who started it, after getting tired of hearing JWZ
complain about repeatedly having to answer questions.
@email{ben@@xemacs.org, Ben Wing} and @email{cthomp@@xemacs.org, Chuck
Thompson}, the principal authors of XEmacs, then took over and Ben did
a massive update reorganizing the whole thing.  At which point Anthony
took back over, but then had to give it up again.  Some of the other
contributors to this FAQ are listed later in this document.

The previous version was converted to hypertext format, and edited by
@email{steve@@xemacs.org, Steven L. Baur}.  It was converted back to
texinfo by @email{hniksic@@xemacs.org, Hrvoje Niksic}.  The FAQ was then
maintained by @email{andreas@@sccon.com, Andreas Kaempf}, who passed it
on to ChristianNyb@o{}.

If you notice any errors or items which should be added or amended to
this FAQ please send email to @email{faq@@xemacs.org, Sandra
Wambold}.  Include @samp{XEmacs FAQ} on the Subject: line.

@menu
Introduction:
* Q1.0.1::      What is XEmacs?
* Q1.0.2::      What is the current version of XEmacs?
* Q1.0.3::      Where can I find it?
* Q1.0.4::      Why Another Version of Emacs?
* Q1.0.5::      Why Haven't XEmacs and GNU Emacs Merged?
* Q1.0.6::      Where can I get help?
* Q1.0.7::      Where are the mailing lists archived?
* Q1.0.8::      How do you pronounce XEmacs?
* Q1.0.9::      What does XEmacs look like?
* Q1.0.10::     Is there a port of XEmacs to Microsoft ('95 or NT)?
* Q1.0.11::     Is there a port of XEmacs to the Macintosh?
* Q1.0.12::     Is there a port of XEmacs to NextStep?
* Q1.0.13::     Is there a port of XEmacs to OS/2?
* Q1.0.14::     Where can I get a printed copy of the XEmacs users manual?

Policies:
* Q1.1.1::      What is the FAQ editorial policy?
* Q1.1.2::      How do I become a Beta Tester?
* Q1.1.3::      How do I contribute to XEmacs itself?

Credits:
* Q1.2.1::      Who wrote XEmacs?
* Q1.2.2::      Who contributed to this version of the FAQ?
* Q1.2.3::      Who contributed to the FAQ in the past?

Internationalization:
* Q1.3.1::      What is the status of internationalization support aka MULE (including Asian language support?
* Q1.3.2::      How can I help with internationalization?
* Q1.3.3::      How do I type non-ASCII characters?
* Q1.3.4::      Can XEmacs messages come out in a different language?
* Q1.3.5::      Please explain the various input methods in MULE/XEmacs
* Q1.3.6::      How do I portably code for MULE/XEmacs?
* Q1.3.7::      How about Cyrillic Modes?
* Q1.3.8::      Does XEmacs support Unicode?
* Q1.3.9::      How does XEmacs display Unicode?

Getting Started:
* Q1.4.1::      What is an @file{init.el} or @file{.emacs} and is there a sample one?
* Q1.4.2::      Can I use the same @file{init.el}/@file{.emacs} with the other Emacs?
* Q1.4.3::      Any good XEmacs tutorials around?
* Q1.4.4::      May I see an example of a useful XEmacs Lisp function?
* Q1.4.5::      And how do I bind it to a key?
* Q1.4.6::      What's the difference between a macro and a function?
@end menu

@node Q1.0.1, Q1.0.2, Introduction, Introduction
@unnumberedsec 1.0: Introduction
@unnumberedsubsec Q1.0.1: What is XEmacs?


XEmacs is a powerful, highly customizable open source text editor and
application development system, with full GUI support.  It is protected
under the GNU Public License and related to other versions of Emacs, in
particular GNU Emacs.  Its emphasis is on modern graphical user
interface support and an open software development model, similar to
Linux.  XEmacs has an active development community numbering in the
hundreds (and thousands of active beta testers on top of this), and runs
on all versions of MS Windows, on Linux, and on nearly every other
version of Unix in existence.  Support for XEmacs has been supplied by
Sun Microsystems, University of Illinois, Lucid, ETL/Electrotechnical
Laboratory, Amdahl Corporation, BeOpen, and others, as well as the
unpaid time of a great number of individual developers.

@node Q1.0.2, Q1.0.3, Q1.0.1, Introduction
@unnumberedsubsec Q1.0.2: What is the current version of XEmacs?

XEmacs versions 21.1.* are releases made from the current stable
sources.  XEmacs versions 21.2.* are releases made from the development
sources.  Check at @uref{http://www.xemacs.org} for the current minor
version.

XEmacs 19.16 was the last release of v19, released in November, 1997,
which was also the last version without international language support.

@node Q1.0.3, Q1.0.4, Q1.0.2, Introduction
@unnumberedsubsec Q1.0.3: Where can I find it?

The canonical source and binaries can be found via anonymous FTP at:

@example
@uref{ftp://ftp.xemacs.org/pub/xemacs/}
@end example

@node Q1.0.4, Q1.0.5, Q1.0.3, Introduction
@unnumberedsubsec Q1.0.4: Why Another Version of Emacs?

For a detailed description of the differences between GNU Emacs and
XEmacs and a detailed history of XEmacs, check out the
@example
@uref{http://www.xemacs.org/About/XEmacsVsGNUemacs.html, NEWS file}
@end example

However, here is a list of some of the reasons why we think you might
consider using it:

@itemize @bullet
@item
It looks nicer.

@item
The XEmacs maintainers are generally more receptive to suggestions than
the GNU Emacs maintainers.

@item
Many more bundled packages than GNU Emacs.

@item
Binaries are available for many common operating systems.

@item
Face support on TTY's.

@item
A built-in toolbar.

@item
Better Motif compliance.

@item
Some internationalization support (including full MULE support, if
compiled with it).

@item
Variable-width fonts.

@item
Variable-height lines.

@item
Marginal annotations.

@item
ToolTalk support.

@item
XEmacs can be used as an Xt widget, and can be embedded within another
application.

@item
Horizontal and vertical scrollbars (using real toolkit scrollbars).

@item
Better APIs (and performance) for attaching fonts, colors, and other
properties to text.

@item
The ability to embed arbitrary graphics in a buffer.

@item
Completely compatible (at the C level) with the Xt-based toolkits.

@end itemize

@node Q1.0.5, Q1.0.6, Q1.0.4, Introduction
@unnumberedsubsec Q1.0.5: Why Haven't XEmacs and GNU Emacs Merged?

There are currently irreconcilable differences in the views about
technical, programming, design and organizational matters between RMS
and the XEmacs development team which provide little hope for a merge to
take place in the short-term future.

If you have a comment to add regarding the merge, it is a good idea to
avoid posting to the newsgroups,  because of the very heated flamewars
that often result.  Mail your questions to @email{xemacs-beta@@xemacs.org} and
@email{bug-gnu-emacs@@prep.ai.mit.edu}.

@node Q1.0.6, Q1.0.7, Q1.0.5, Introduction
@unnumberedsubsec Q1.0.6: Where can I get help?

Probably the easiest way, if everything is installed, is to use Info, by
pressing @kbd{C-h i}, or looking for an Info item on the
Help Menu.  @kbd{M-x apropos} can be used to look for particular commands.

For items not found in the manual, try reading this FAQ
@comment , examining the regular GNU Emacs FAQ (which can be
@comment found with the Emacs 19 distribution) as well as at
@comment @uref{http://www.eecs.nwu.edu/emacs/faq/}
and reading the Usenet group comp.emacs.xemacs.

If you choose to post to a newsgroup, @strong{please use
comp.emacs.xemacs}.  Please do not post XEmacs related questions to
gnu.emacs.help.

If you cannot post or read Usenet news, there is a corresponding mailing
list @email{xemacs-news@@xemacs.org} which is available.  It can be
subscribed to via the Mailman Web interface or by sending mail to to
@email{xemacs-news-request@@xemacs.org} with @samp{subscribe} in the
body of the message.  See also
@uref{http://www.xemacs.org/Lists/#xemacs-news}.  To cancel a
subscription, you may use the @email{xemacs-news-request@@xemacs.org}
address or the Web interface.  Send a message with a subject of
@samp{unsubscribe} to be removed.

@node Q1.0.7, Q1.0.8, Q1.0.6, Introduction
@unnumberedsubsec Q1.0.7: Where are the mailing lists archived?

The archives can be found at @uref{http://list-archive.xemacs.org}

@node Q1.0.8, Q1.0.9, Q1.0.7, Introduction
@unnumberedsubsec Q1.0.8: How do you pronounce XEmacs?

The most common pronounciation is @samp{Eks eemax}.

@node Q1.0.9, Q1.0.10, Q1.0.8, Introduction
@unnumberedsubsec Q1.0.9: What does XEmacs look like?

Screen snapshots are available at
@uref{http://www.xemacs.org/About/Screenshots/index.html}
as part of the XEmacs website.

@node Q1.0.10, Q1.0.11, Q1.0.9, Introduction
@unnumberedsubsec Q1.0.10: Is there a port of XEmacs to Microsoft ('95 or NT)?

Yes.  XEmacs can be built under MS Windows and is fully-featured and
actively developed.  See @ref{MS Windows}.

@node Q1.0.11, Q1.0.12, Q1.0.10, Introduction
@unnumberedsubsec Q1.0.11: Is there a port of XEmacs to the Macintosh?
@c changed

@c There has been a port to the MachTen environment of XEmacs 19.13, but no
@c patches have been submitted to the maintainers to get this in the
@c mainstream distribution.
@c
@c For the MacOS, there is a port of
@c @uref{ftp://ftp.cs.cornell.edu/pub/parmet/, Emacs 18.59}.

Yes.

XEmacs 21.5 (perhaps 21.4 also?) works on MacOS X, although it certainly
will not feel very much like a Mac application as it has no Mac-specific
code in it.

There is also a port of XEmacs 19.14 that works on all recent versions
of MacOS, from 8.1 through MacOS X, by @email{pjarvis@@ispchannel.com,
Pitts Jarvis}.  It runs in an equivalent of TTY mode only (one single
Macintosh window, 25 colors), but has a large number of Mac-specific
additions.  It's available at
@uref{http://homepage.mac.com/pjarvis/xemacs.html}.

@node Q1.0.12, Q1.0.13, Q1.0.11, Introduction
@unnumberedsubsec Q1.0.12: Is there a port of XEmacs to NextStep?

Carl Edman, apparently no longer at @email{cedman@@princeton.edu}, did
the port of GNU Emacs to NeXTstep and expressed interest in doing the
XEmacs port, but never went any farther.

@node Q1.0.13, Q1.0.14, Q1.0.12, Introduction
@unnumberedsubsec Q1.0.13: Is there a port of XEmacs to OS/2?

No, but Alexander Nikolaev <avn_1251@@mail.ru> is working on it.

@node Q1.0.14, Q1.1.1, Q1.0.13, Introduction
@unnumberedsubsec Q1.0.14: Where can I obtain a printed copy of the XEmacs User's Manual?

Pre-printed manuals are not available.  If you are familiar with
TeX, you can generate your own manual from the XEmacs sources.

HTML and Postscript versions of XEmacs manuals are available from the
XEmacs web site at
@uref{http://www.xemacs.org/Documentation/index.html}.

@node Q1.1.1, Q1.1.2, Q1.0.14, Introduction
@unnumberedsec 1.1: Policies
@unnumberedsubsec Q1.1.1: What is the FAQ editorial policy?

The FAQ is actively maintained and modified regularly.  All links should
be up to date.  Unfortunately, some of the information is out of date --
a situation which the FAQ maintainer is working on.  All submissions are
welcome, please e-mail submissions to @email{faq@@xemacs.org, XEmacs FAQ
maintainers}.

Please make sure that @samp{XEmacs FAQ} appears on the Subject: line.
If you think you have a better way of answering a question, or think a
question should be included, we'd like to hear about it.  Questions and
answers included into the FAQ will be edited for spelling and grammar
and will be attributed.  Answers appearing without attribution are
either from versions of the FAQ dated before May 1996 or are from
previous FAQ maintainers.  Answers quoted from Usenet news articles will
always be attributed, regardless of the author.

@node Q1.1.2, Q1.1.3, Q1.1.1, Introduction
@unnumberedsubsec Q1.1.2: How do I become a Beta Tester?

Send an email message to @email{xemacs-beta-request@@xemacs.org} with
the line @samp{subscribe} in the body of the message.

Be prepared to get your hands dirty, as beta testers are expected to
identify problems as best they can.

@node Q1.1.3, Q1.2.1, Q1.1.2, Introduction
@unnumberedsubsec Q1.1.3: How do I contribute to XEmacs itself?

Ben Wing @email{ben@@xemacs.org} writes:

@quotation
BTW if you have a wish list of things that you want added, you have to
speak up about it!  More specifically, you can do the following if you
want a feature added (in increasing order of usefulness):

@itemize @bullet
@item
Make a posting about a feature you want added.

@item
Become a beta tester and make more postings about those same features.

@item
Convince us that you're going to use the features in some cool and
useful way.

@item
Come up with a clear and well-thought-out API concerning the features.

@item
Write the code to implement a feature and send us a patch.
@end itemize

(not that we're necessarily requiring you to write the code, but we can
always hope :)
@end quotation

@node Q1.2.1, Q1.2.2, Q1.1.3, Introduction
@unnumberedsec 1.2: Credits
@unnumberedsubsec Q1.2.1: Who wrote XEmacs?

XEmacs is the result of the time and effort of many people.  The
developers responsible for recent releases are:

@itemize @bullet
@item @email{martin@@xemacs.org, Martin Buchholz}
@html
<br><img src="mrb.jpeg" alt="Portrait of Martin Buchholz"><br>
@end html


@item @email{stephen@@xemacs.org, Stephen Turnbull}


@item @email{ben@@xemacs.org, Ben Wing}
@html
<br><img src="wing.gif" alt="Portrait of Ben Wing"><br>
@end html


@item @email{hniksic@@xemacs.org, Hrvoje Niksic}

@html
<br><img src="hniksic.jpeg" alt="Portrait of Hrvoje Niksic"><br>
@end html

@end itemize

The developers responsible for older releases were:

@itemize @bullet
@item @email{steve@@xemacs.org, Steve Baur}

@html
<br><img src="steve.gif" alt="Portrait of Steve Baur"><br>
@end html

@item @email{cthomp@@xemacs.org, Chuck Thompson}
@html
<br><img src="cthomp.jpeg" alt="Portrait of Chuck Thompson"><br>
@end html

@item @email{jwz@@jwz.org, Jamie Zawinski}
@html
<br><img src="jwz.gif" alt="Portrait of Jamie Zawinski"><br>
@end html

@item @email{mly@@adoc.xerox.com, Richard Mlynarik}

Steve Baur was the primary maintainer for 19.15 through 21.0.

Chuck Thompson and Ben Wing were the maintainers for 19.11 through 19.14
and heavy code contributors for 19.8 through 19.10.

Jamie Zawinski was the maintainer for 19.0 through 19.10 (the entire
history of Lucid Emacs).  Richard Mlynarik was a heavy code contributor
to 19.6 through 19.8.

@end itemize

Along with many other contributors, partially enumerated in the
@samp{About XEmacs} option in the Help menu.

@node Q1.2.2, Q1.2.3, Q1.2.1, Introduction
@unnumberedsubsec Q1.2.2: Who contributed to this version of the FAQ?

The following people contributed valuable suggestions to building this
version of the FAQ (listed in alphabetical order):

@itemize @bullet
@item @email{steve@@xemacs.org, SL Baur}

@item @email{hniksic@@xemacs.org, Hrvoje Niksic}

@item @email{Aki.Vehtari@@hut.fi, Aki Vehtari}

@end itemize

@node Q1.2.3, Q1.3.1, Q1.2.2, Introduction
@unnumberedsubsec Q1.2.3: Who contributed to the FAQ in the past?

This is only a partial list, as many names were lost in a hard disk
crash some time ago.

@itemize @bullet
@item @email{binge@@aloft.att.com, Curtis.N.Bingham}

@item @email{bruncott@@dormeur.inria.fr, Georges Brun-Cottan}

@item @email{rjc@@cogsci.ed.ac.uk, Richard Caley}

@item @email{cognot@@ensg.u-nancy.fr, Richard Cognot}

@item @email{daku@@nortel.ca, Mark Daku}

@item @email{wgd@@martigny.ai.mit.edu, William G. Dubuque}

@item @email{eeide@@cs.utah.edu, Eric Eide}

@item @email{af@@biomath.jussieu.fr, Alain Fauconnet}

@item @email{cflatter@@nrao.edu, Chris Flatters}

@item @email{ginsparg@@adra.com, Evelyn Ginsparg}

@item @email{hall@@aplcenmp.apl.jhu.edu, Marty Hall}

@item @email{dkindred@@cmu.edu, Darrell Kindred}

@item @email{dmoore@@ucsd.edu, David Moore}

@item @email{arup+@@cmu.edu, Arup Mukherjee}

@item @email{nickel@@prz.tu-berlin.de, Juergen Nickelsen}

@item @email{powell@@csl.ncsa.uiuc.edu, Kevin R. Powell}

@item @email{dworkin@@ccs.neu.edu, Justin Sheehy}

@item @email{stig@@hackvan.com, Stig}

@item @email{Aki.Vehtari@@hut.fi, Aki Vehtari}
@end itemize

@node Q1.3.1, Q1.3.2, Q1.2.3, Introduction
@unnumberedsec 1.3: Internationalization
@unnumberedsubsec Q1.3.1: What is the status of internationalization support aka MULE (including Asian language support?

Both the stable and development versions of XEmacs include
internationalization support (aka MULE).  MULE currently (21.4) works on
UNIX and Linux systems.  It is possible to build with MULE on Windows
systems, but if you really need MULE on Windows, it is recommended that
you build and use the development (21.5) version, and deal with the
instability of the development tree.  Binaries compiled without MULE
support run faster than MULE capable XEmacsen.

@node Q1.3.2, Q1.3.3, Q1.3.1, Introduction
@unnumberedsubsec Q1.3.2: How can I help with internationalization?

If you would like to help, you may want to join the
@email{xemacs-mule@@xemacs.org} mailing list.  Especially needed are
people who speak/write languages other than English, who are willing to
use XEmacs/MULE regularly, and have some experience with Elisp.

Translations of the TUTORIAL and man page are welcome, and XEmacs does
support multilingual menus, but we have few current translations.

@xref{Q1.1.2}.

@node Q1.3.3, Q1.3.4, Q1.3.2, Introduction
@unnumberedsubsec Q1.3.3: How do I type non-ASCII characters?

See question 3.5.7 (@pxref{Q3.5.7}) in part 3 of this FAQ for some
simple methods that also work in non-MULE builds of XEmacs (but only for
one-octet coded character sets, and mostly for ISO 8859/1).  Many of the
methods available for Cyrillic (@pxref{Q1.3.7}) work without MULE.
MULE has more general capabilities.  @xref{Q1.3.5}.

@xref{Q3.2.7}, which covers display of non-ASCII characters.

@node Q1.3.4, Q1.3.5, Q1.3.3, Introduction
@unnumberedsubsec Q1.3.4: Can XEmacs messages come out in a different language?

The message-catalog support was written but is badly bit-rotted.  XEmacs
20 and 21 did @emph{not} support it, and early releases of XEmacs 22
will not either.

However, menubar localization @emph{does} work.  To enable it, add to
your @file{Emacs} file entries like this:

@example
Emacs*XlwMenu.resourceLabels:                   True
Emacs*XlwMenu.file.labelString:                 Fichier
Emacs*XlwMenu.openInOtherWindow.labelString:    In anderem Fenster oeffnen
@end example

The name of the resource is derived from the non-localized entry by
removing punctuation and capitalizing as above.

@node Q1.3.5, Q1.3.6, Q1.3.4, Introduction
@unnumberedsubsec Q1.3.5: Please explain the various input methods in MULE/XEmacs

Mule supports a wide variety of input methods.  There are three basic
classes: Lisp implementations, generic platform support, and library
interfaces.

@emph{Lisp implementations} include Quail, which provides table-driven input
methods for almost all the character sets that Mule supports (including
all of the ISO 8859 family, the Indic languages, Thai, and so on), and
SKK, for Japanese.  (SKK also supports an interface to an external
"dictionary server" process.)  Quail supports both typical "dead-key"
methods (eg, in the "latin-1-prefix" method, @kbd{" a} produces ä, LATIN
SMALL LETTER A WITH DIAERESIS), and the complex dictionary-based phonetic
methods used for Asian ideographic languages like Chinese.

Lisp implementations can be less powerful (but they are not perceptibly
inefficient), and of course are not portable to non-Emacs applications.
The incompatibility can be very annoying.  On the other hand, they
require no special platform support or external libraries, so if you can
display the characters, Mule can input them for you and you can edit,
anywhere.

@emph{Generic platform support} is currently limited to the X Input
Method (XIM) framework, although support for MSIME (for MS Windows) is
planned, and IIIMF (Sun's Internet-Intranet Input Method Framework)
support is extremely desirable.  XIM is enabled at build time by use of
the @samp{--with-xim} flag to @code{configure}.  For use of XIM, see
your platform documentation.  However, normally the input method you use
is specified via the @samp{LANG} and @samp{XMODIFIERS} environment
variables.

Of course, input skills are portable across most applications.  However,
especially in modern GUI systems the habit of using bucky bits has
fallen into sad disuse, and many XIM systems are poorly configured for
use with Emacs.  For example, the kinput2 input manager (a separate
process providing an interface between Japanese dictionary servers such
as Canna and Wnn, and the application) tends to gobble up keystrokes
generating Meta characters.  This means that to edit while using an XIM
input method, you must toggle the input method off every time you want
to use @kbd{M-f}.  Your mileage may vary.

@emph{Library interfaces} are most common for Japanese, although Wnn
supports Chinese (traditional and simplified) and Korean.  There are
Chinese and Korean input servers available, but we do not know of any
patches for XEmacs to use them directly.  You can use them via
IM-enabled terminals, by manipulating the terminal coding systems.  We
describe only the Japanese-oriented systems here.  The advantage of
these systems is that they are very powerful, and on platforms where
they are available there is typically a wide range of applications that
support them.  Thus your input skills are portable across applications.

Mule provides built-in interfaces to the following input methods: Wnn4,
Wnn6, Canna, and SJ3.  These can be configured at build time.  There are
patches available (no URL, sorry) to support the SKK server, as well.
Wnn and SJ3 use the @code{egg} user interface.  The interface for Canna
is specialized to Canna.

Wnn supports Japanese, Chinese and Korean. It is made by OMRON and Kyôto
University. It is a powerful and complex system.  Wnn4 is free and Wnn6
is not.  Wnn uses grammatical hints and probability of word association,
so in principle Wnn can be cleverer than other methods.

Canna, made by NEC, supports only Japanese.  It is a simple and powerful
system. Canna uses only grammar, but its grammar and dictionary are
quite sophisticated.  So for standard modern Japanese, Canna seems
cleverer than Wnn4. In addition, the UNIX version of Canna is free (now
there is a Microsoft Windows version).

SJ3, by Sony, supports only Japanese.

Egg consists of following parts:

@enumerate
@item
Input character Translation System (ITS) layer.
It translates ASCII inputs to Kana/PinYin/Hangul characters.

@item
Kana/PinYin/Hangul to Kanji transfer layer.
The interface layer to network Kana-Kanji server (Wnn and Sj3).
@end enumerate

These input methods are modal.  They have a raw (alphabet) mode, a
phonetic input mode, and Kana-Kanji transfer mode.  However there are
mode-less input methods for Egg and Canna.  @samp{boiled-egg} is a
mode-less input method running on Egg.  For Canna, @samp{canna.el} has a
tiny boiled-egg-like command, @code{(canna-boil)}, and there are some
boiled-egg-like utilities.

Much of this information was provided by @email{morioka@@jaist.ac.jp,
MORIOKA Tomohiko}.

@node Q1.3.6, Q1.3.7, Q1.3.5, Introduction
@unnumberedsubsec Q1.3.6: How do I portably code for MULE/XEmacs?

MULE has evolved rapidly over the last few years, and the original third
party patch (for GNU Emacs 19), GNU Emacs 20+, and XEmacs 20+ have quite
different implementations.  The APIs also vary although recent versions
of XEmacs have tended to converge to the GNU Emacs standard.

MULE implementations are going to continue to evolve.  Both GNU Emacs
and XEmacs are working hard on Unicode support, which will involve new
APIs and probably variations on old ones.  For XEmacs 22, the old ISO
2022-based system for recognizing encodings will be replaced by a much
more flexible system, which should improve accuracy of automatic coding
detections, but will also involve new APIs.

@email{morioka@@jaist.ac.jp, MORIOKA Tomohiko} writes:

@quotation
The application implementor must write separate code for these mule
variants.  [Please don't hesitate to report these variants to us; they
are not, strictly speaking, bugs, but they give third-party developers
the same kind of creepy-crawly feeling.  We'll do what we can. -- Ed.]

MULE and the next version of Emacs are similar but the symbols are very
different---requiring separate code as well.

Namely we must support 3 kinds of mule variants and 4 or 5 or 6 kinds of
emacs variants... (;_;) I'm shocked, so I wrote a wrapper package called
@code{emu} to provide a common interface.  [There is an XEmacs package
of APEL which provides much more comprehensive coverage.  Be careful,
however; APEL has problems of its own. -- Ed.]

I have the following suggestions about dealing with mule variants:

@itemize @bullet
@item
@code{(featurep 'mule)} @code{t} on all mule variants

@item
@code{(boundp 'MULE)} is @code{t} on only MULE.  Maybe the next version
of Emacs will not have this symbol.

@item
MULE has a variable @code{mule-version}.  Perhaps the next version of
Emacs will have this variable as well.
@end itemize

Following is a sample to distinguish mule variants:

@lisp
(if (featurep 'mule)
    (cond ((boundp 'MULE)
           ;; for original Mule
           )
          ((string-match "XEmacs" emacs-version)
           ;; for XEmacs with Mule
           )
          (t
           ;; for next version of Emacs
           ))
  ;; for old emacs variants
  )
@end lisp
@end quotation

@node Q1.3.7, Q1.3.8, Q1.3.6, Introduction
@unnumberedsubsec Q1.3.7: How about Cyrillic Modes?

@email{ilya@@math.ohio-state.edu, Ilya Zakharevich} writes:

@quotation
There is a cyrillic mode in the file @file{mysetup.zip} in
@iftex
@*
@end iftex
@uref{ftp://ftp.math.ohio-state.edu/pub/users/ilya/emacs/}.  This is a
modification to @email{ava@@math.jhu.ed, Valery Alexeev's} @file{russian.el}
which can be obtained from
@end quotation

@uref{http://www.math.uga.edu/~valery/russian.el}.

@email{d.barsky@@ee.surrey.ac.uk, Dima Barsky} writes:

@quotation
There is another cyrillic mode for both GNU Emacs and XEmacs by
@email{manin@@camelot.mssm.edu, Dmitrii
(Mitya) Manin} at
@iftex

@end iftex
@uref{http://kulichki-lat.rambler.ru/centrolit/manin/cyr.el}.
@c Link above, <URL:http://camelot.mssm.edu/~manin/cyr.el> was dead.
@c Changed to russian host instead
@end quotation

@email{rebecca.ore@@op.net, Rebecca Ore} writes:

@quotation
The fullest resource I found on Russian language use (in and out of
XEmacs) is @uref{http://www.ibiblio.org/sergei/Software/Software.html}
@end quotation

@node Q1.3.8, Q1.3.9, Q1.3.7, Introduction
@unnumberedsubsec Q1.3.8: Does XEmacs support Unicode?

Partially, as an external encoding for files, processes, and terminals.
It does not yet support Unicode fonts @ref{Q1.3.9, Does XEmacs support
Unicode Fonts?}

To get Unicode support, you need a Mule-enabled XEmacs.  Install
Mule-UCS from packages in the usual way.  Put

@example
(require 'un-define)
(set-coding-priority-list '(utf-8))
(set-coding-category-system 'utf-8 'utf-8)
@end example

in your init file to enable the UTF-8 coding system.  You may wish to
view the documentation of @code{set-coding-priority-list} if you find
that files that are not UTF-8 are being mis-recognized as UTF-8.

Install standard national fonts (not Unicode fonts) for all
character sets you use.  See @ref{Q1.3.9}.

Mule-UCS also supports 16-bit forms of Unicode (UTF-16).  It does not
support 31-bit forms of Unicode (UTF-32 or UCS-4).

@node Q1.3.9, Q1.4.1, Q1.3.8, Introduction
@unnumberedsubsec Q1.3.9: How does XEmacs display Unicode?

Mule doesn't have a Unicode charset internally, so there's nothing to
bind a Unicode registry to.  It would not be straightforward to create,
either, because Unicode is not ISO 2022-compatible.  You'd have to
translate it to multiple 96x96 pages.

This means that Mule-UCS uses ordinary national fonts for display.  This
is not really a problem, except for those languages that use the Unified
Han characters.  The problem here is that Mule-UCS maps from Unicode
code points to national character sets in a deterministic way.  By
default, this means that Japanese fonts are tried first, then Chinese,
then Korean.  To change the priority ordering, use the command
`un-define-change-charset-order'.

It also means you can't use Unicode fonts directly, at least not without
extreme hackery.  You can run -nw with (set-terminal-coding-system
'utf-8) if you really want a Unicode font for some reason.

Real Unicode support will be introduced in XEmacs 22.0.

@node Q1.4.1, Q1.4.2, Q1.3.9, Introduction
@unnumberedsec 1.4: Getting Started, Backing up & Recovery
@unnumberedsubsec Q1.4.1: What is an @file{init.el} or @file{.emacs} and is there a sample one?

The @file{init.el} or @file{.emacs} file is used to customize XEmacs to
your tastes.  Starting in 21.4, the preferred location for the init file
is @file{~/.xemacs/init.el}; in previous versions, it was
@file{~/.emacs}.  21.4 still accepts the old location, but the first
time you run it, it will ask to migrate your file to the new location.
If you answer yes, the file will be moved, and a "compatibility"
@file{.emacs} file will be placed in the old location so that you can
still run older versions of XEmacs, and versions of GNU Emacs, which
expect the old location.  The @file{.emacs} file present is just a stub
that loads the real file in @file{~/.xemacs/init.el}.

No two init files are alike, nor are they expected to be alike, but
that's the point.  The XEmacs distribution contains an excellent starter
example in the @file{etc/} directory called @file{sample.init.el}
(starting in 21.4) or @file{sample.emacs} in older versions.  Copy this
file from there to @file{~/.xemacs/init.el} (starting in 21.4) or
@file{~/.emacs} in older versions, where @samp{~} means your home
directory, of course.  Then edit it to suit.

You may bring the @file{sample.init.el} or @file{sample.emacs} file into
an XEmacs buffer from the menubar. (The menu entry for it is always
under the @samp{Help} menu, but its location under that has changed in
various versions.  Recently, look under the @samp{Samples} submenu.)  To
determine the location of the @file{etc/} directory type the command
@kbd{C-h v data-directory @key{RET}}.

@node Q1.4.2, Q1.4.3, Q1.4.1, Introduction
@unnumberedsubsec Q1.4.2: Can I use the same @file{init.el}/@file{.emacs} with the other Emacs?

Yes.  The sample @file{init.el}/@file{.emacs} included in the XEmacs
distribution will show you how to handle different versions and flavors
of Emacs.

@node Q1.4.3, Q1.4.4, Q1.4.2, Introduction
@unnumberedsubsec Q1.4.3: Any good tutorials around?

There's the XEmacs tutorial available from the Help Menu under
@samp{Basics->Tutorials}, or by typing @kbd{C-h t}. To check whether
it's available in a non-english language, type @kbd{C-u C-h t TAB}, type
the first letters of your preferred language, then type @key{RET}.

@comment There's an Emacs Lisp tutorial at
@comment
@comment @example
@comment @uref{ftp://prep.ai.mit.edu/pub/gnu/emacs-lisp-intro-1.04.tar.gz}.
@comment @end example
@comment
@comment @email{erik@@petaxp.rug.ac.be, Erik Sundermann} has made a tutorial web
@comment page at
@comment @iftex
@comment @*
@comment @end iftex
@comment @uref{http://petaxp.rug.ac.be/~erik/xemacs/}.

@node Q1.4.4, Q1.4.5, Q1.4.3, Introduction
@unnumberedsubsec Q1.4.4: May I see an example of a useful XEmacs Lisp function?

The following function does a little bit of everything useful.  It does
something with the prefix argument, it examines the text around the
cursor, and it's interactive so it may be bound to a key.  It inserts
copies of the current word the cursor is sitting on at the cursor.  If
you give it a prefix argument: @kbd{C-u 3 M-x double-word} then it will
insert 3 copies.

@lisp
(defun double-word (count)
  "Insert a copy of the current word underneath the cursor"
  (interactive "*p")
  (let (here there string)
    (save-excursion
      (forward-word -1)
      (setq here (point))
      (forward-word 1)
      (setq there (point))
      (setq string (buffer-substring here there)))
    (while (>= count 1)
      (insert string)
      (decf count))))
@end lisp

The best way to see what is going on here is to let XEmacs tell you.
Put the code into an XEmacs buffer, and do a @kbd{C-h f} with the cursor
sitting just to the right of the function you want explained.  Eg.  move
the cursor to the SPACE between @code{interactive} and @samp{"*p"} and
hit @kbd{C-h f} to see what the function @code{interactive} does.  Doing
this will tell you that the @code{*} requires a writable buffer, and
@code{p} converts the prefix argument to a number, and
@code{interactive} allows you to execute the command with @kbd{M-x}.

@node Q1.4.5, Q1.4.6, Q1.4.4, Introduction
@unnumberedsubsec Q1.4.5: And how do I bind it to a key?

To bind to a key do:

@lisp
(global-set-key "\C-cd" 'double-word)
@end lisp

Or interactively, @kbd{M-x global-set-key} and follow the prompts.

@node Q1.4.6, , Q1.4.5, Introduction
@unnumberedsubsec Q1.4.6: What's the difference between a macro and a function?

Quoting from the Lisp Reference (a.k.a @dfn{Lispref}) Manual:

@dfn{Macros} enable you to define new control constructs and other
language features.  A macro is defined much like a function, but instead
of telling how to compute a value, it tells how to compute another Lisp
expression which will in turn compute the value.  We call this
expression the @dfn{expansion} of the macro.

Macros can do this because they operate on the unevaluated expressions
for the arguments, not on the argument values as functions do.  They can
therefore construct an expansion containing these argument expressions
or parts of them.

Do not confuse the two terms with @dfn{keyboard macros}, which are
another matter, entirely.  A keyboard macro is a key bound to several
other keys.  Refer to manual for details.

@node Installation, Customization, Introduction, Top
@unnumbered 2 Installation and Trouble Shooting

This is part 2 of the XEmacs Frequently Asked Questions list.  This
section is devoted to Installation, Maintenance and Trouble Shooting.

@menu
Installation:
* Q2.0.1::      Running XEmacs without installing.
* Q2.0.2::      XEmacs is too big.
* Q2.0.3::      Compiling XEmacs with Netaudio.
* Q2.0.4::      Problems with Linux and ncurses.
* Q2.0.5::      Do I need X11 to run XEmacs?
* Q2.0.6::      I'm having strange crashes.  What do I do?
* Q2.0.7::      Libraries in non-standard locations.
* Q2.0.8::      can't resolve symbol _h_errno
* Q2.0.9::      Where do I find external libraries?
* Q2.0.10::     After I run configure I find a coredump, is something wrong?
* Q2.0.11::     XEmacs can't resolve host names.
* Q2.0.12::     Why can't I strip XEmacs?
* Q2.0.13::     I don't need no steenkin' packages.  Do I?
* Q2.0.14::     I don't want to install a million .els one at a time!
* Q2.0.15::     EFS fails with "500 AUTH not understood" (NEW)
* Q2.0.16::     Cygwin XEmacs won't start: cygXpm-noX4.dll was not found (NEW)

Trouble Shooting:
* Q2.1.1::      XEmacs just crashed on me!
* Q2.1.2::      Cryptic Minibuffer messages.
* Q2.1.3::      Translation Table Syntax messages at Startup.
* Q2.1.4::      Startup warnings about deducing proper fonts?
* Q2.1.5::      XEmacs cannot connect to my X Terminal.
* Q2.1.6::      XEmacs just locked up my Linux X server.
* Q2.1.7::      HP Alt key as Meta.
* Q2.1.8::      got (wrong-type-argument color-instance-p nil)!
* Q2.1.9::      XEmacs causes my OpenWindows 3.0 server to crash.
* Q2.1.10::     Warnings from incorrect key modifiers.
* Q2.1.11::     Can't instantiate image error... in toolbar
* Q2.1.12::     Regular Expression Problems on DEC OSF1.
* Q2.1.13::     HP/UX 10.10 and @code{create_process} failure
* Q2.1.14::     @kbd{C-g} doesn't work for me.  Is it broken?
* Q2.1.15::     How to debug an XEmacs problem with a debugger.
* Q2.1.16::     XEmacs crashes in @code{strcat} on HP/UX 10.
* Q2.1.17::     @samp{Marker does not point anywhere}.
* Q2.1.18::     XEmacs is outputting lots of X errors.
* Q2.1.19::     XEmacs does not follow the local timezone.
* Q2.1.20::     @samp{Symbol's function definition is void: hkey-help-show.}
* Q2.1.21::     [This question intentionally left blank]
* Q2.1.22::     XEmacs seems to take a really long time to do some things.
* Q2.1.23::     Movemail on Linux does not work for XEmacs 19.15 and later.
* Q2.1.24::     XEmacs won't start without network.
* Q2.1.25::     After upgrading, XEmacs won't do `foo' any more!
@end menu

@node Q2.0.1, Q2.0.2, Installation, Installation
@unnumberedsec 2.0: Installation
@unnumberedsubsec Q2.0.1: Running XEmacs without installing

How can I just try XEmacs without installing it?

XEmacs will run in place without requiring installation and copying of
the Lisp directories, and without having to specify a special build-time
flag.  It's the copying of the Lisp directories that requires so much
space.  XEmacs is largely written in Lisp.

A good method is to make a shell alias for xemacs:

@example
alias xemacs=/i/xemacs-20.2/src/xemacs
@end example

(You will obviously use whatever directory you downloaded the source
tree to instead of @file{/i/xemacs-20.2}).

This will let you run XEmacs without massive copying.

@node Q2.0.2, Q2.0.3, Q2.0.1, Installation
@unnumberedsubsec Q2.0.2: XEmacs is too big

The space required by the installation directories can be
reduced dramatically if desired.  Gzip all the .el files.  Remove all
the packages you'll never want to use.  Remove the TexInfo manuals.
Remove the Info (and use just hardcopy versions of the manual).  Remove
most of the stuff in etc.  Remove or gzip all the source code.  Gzip or
remove the C source code.  Configure it so that copies are not made of
the support lisp.

These are all Emacs Lisp source code and bytecompiled object code.  You
may safely gzip everything named *.el here.  You may remove any package
you don't use.  @emph{Nothing bad will happen if you delete a package
that you do not use}.  You must be sure you do not use it though, so be
conservative at first.

Any package with the possible exceptions of xemacs-base, and EFS are
candidates for removal.  Ask yourself, @emph{Do I ever want to use this
package?}  If the answer is no, then it is a candidate for removal.

First, gzip all the .el files.  Then go about package by package and
start gzipping the .elc files.  Then run XEmacs and do whatever it is
you normally do.  If nothing bad happens, then remove the package.  You
can remove a package via the PUI interface 
(@code{M-x pui-list-packages}, then press @kbd{d} to mark the packages
you wish to delete, and then @kbd{x} to delete them.

Another method is to do @code{M-x package-get-delete-package}.

@node Q2.0.3, Q2.0.4, Q2.0.2, Installation
@unnumberedsubsec Q2.0.3: Compiling XEmacs with Netaudio.

What is the best way to compile XEmacs with the netaudio system, since I
have got the netaudio system compiled but installed at a weird place, I
am not root.  Also in the READMEs it does not say anything about
compiling with the audioserver?

You should only need to add some stuff to the configure command line.
To tell it to compile in netaudio support: @samp{--with-sound=both}, or
@samp{--with-sound=nas} if you don't want native sound support for some
reason.) To tell it where to find the netaudio includes and libraries:

@example
--site-libraries=WHATEVER
--site-includes=WHATEVER
@end example

Then (fingers crossed) it should compile and it will use netaudio if you
have a server running corresponding to the X server. The netaudio server
has to be there when XEmacs starts. If the netaudio server goes away and
another is run, XEmacs should cope (fingers crossed, error handling in
netaudio isn't perfect).

BTW, netaudio has been renamed as it has a name clash with something
else, so if you see references to NAS or Network Audio System, it's the
same thing.  It also might be found at
@uref{ftp://ftp.x.org/contrib/audio/nas/}.

@node Q2.0.4, Q2.0.5, Q2.0.3, Installation
@unnumberedsubsec Q2.0.4: Problems with Linux and ncurses.

On Linux 1.3.98 with termcap 2.0.8 and the ncurses that came with libc
5.2.18, XEmacs 20.0b20 is unable to open a tty device:

@example
src/xemacs -nw -q
Initialization error:
@iftex
@*
@end iftex
Terminal type `xterm' undefined (or can't access database?)
@end example

@email{ben@@xemacs.org, Ben Wing} writes:

@quotation
Your ncurses configuration is messed up.  Your /usr/lib/terminfo is a
bad pointer, perhaps to a CD-ROM that is not inserted.
@end quotation

@node Q2.0.5, Q2.0.6, Q2.0.4, Installation
@unnumberedsubsec Q2.0.5: Do I need X11 to run XEmacs?

No.  The name @dfn{XEmacs} is unfortunate in the sense that it is
@strong{not} an X Window System-only version of Emacs.  XEmacs has
full color support on a color-capable character terminal.

@node Q2.0.6, Q2.0.7, Q2.0.5, Installation
@unnumberedsubsec Q2.0.6: I'm having strange crashes.  What do I do?

There have been a variety of reports of crashes due to compilers with
buggy optimizers.  Please see the @file{PROBLEMS} file that comes with
XEmacs to read what it says about your platform.

If you compiled XEmacs using @samp{--use-union-type} (or the option
@samp{USE_UNION_TYPE} in @file{config.inc} under Windows), try
recompiling again without it.  The union type has been known to trigger
compiler errors in a number of cases.

@node Q2.0.7, Q2.0.8, Q2.0.6, Installation
@unnumberedsubsec Q2.0.7: Libraries in non-standard locations

I have x-faces, jpeg, xpm etc. all in different places.  I've tried
space-separated, comma-separated, several --site-libraries, all to no
avail.

@example
--site-libraries='/path/one /path/two /path/etc'
@end example

@node Q2.0.8, Q2.0.9, Q2.0.7, Installation
@unnumberedsubsec Q2.0.8: can't resolve symbol _h_errno

You are using the Linux/ELF distribution of XEmacs 19.14, and your ELF
libraries are out of date.  You have the following options:

@enumerate
@item
Upgrade your libc to at least 5.2.16 (better is 5.2.18, 5.3.12, or
5.4.10).

@item
Patch the XEmacs binary by replacing all occurrences of
@samp{_h_errno^@@} with
@iftex
@*
@end iftex
@samp{h_errno^@@^@@}.  Any version of Emacs will
suffice.  If you don't understand how to do this, don't do it.

@item
Rebuild XEmacs yourself---any working ELF version of libc should be
O.K.
@end enumerate

@email{hniksic@@xemacs.org, Hrvoje Niksic} writes:

@quotation
Why not use a Perl one-liner for No. 2?

@example
perl -pi -e 's/_h_errno\0/h_errno\0\0/g' \
/usr/local/bin/xemacs-19.14
@end example

NB: You @emph{must} patch @file{/usr/local/bin/xemacs-19.14}, and not
@file{xemacs} because @file{xemacs} is a link to @file{xemacs-19.14};
the Perl @samp{-i} option will cause unwanted side-effects if applied to
a symbolic link.
@end quotation

@email{steve@@xemacs.org, SL Baur} writes:

@quotation
If you build against a recent libc-5.4 (late enough to have caused
problems earlier in the beta cycle) and then run with an earlier version
of libc, you get a

@example
$ xemacs
xemacs: can't resolve symbol '__malloc_hook'
zsh: 7942 segmentation fault (core dumped)  xemacs
@end example

(Example binary compiled against libc-5.4.23 and run with libc-5.4.16).

The solution is to upgrade to at least libc-5.4.23.  Sigh.  Drat.
@end quotation

@node Q2.0.9, Q2.0.10, Q2.0.8, Installation
@unnumberedsubsec Q2.0.9: Where do I find external libraries?

All external libraries used by XEmacs can be found at the XEmacs FTP
site
@iftex
@*
@end iftex
@uref{ftp://ftp.xemacs.org/pub/xemacs/aux/}.
[These tarballs and this FAQ are wa-a-ay out of date.  Sorry, I'm not
currently network-capable, and I will probably forgot to update this
before submitting the patch. -- Ed.]

@c Changed June Link above, <URL:ftp://ftp.xemacs.org/pub/aux/> was dead.
@c This list is a pain in the you-know-what to keep in synch with the
@c world.
The canonical locations (at the time of this writing) are as follows:

@table @asis
@item JPEG
@uref{ftp://ftp.uu.net/graphics/jpeg/}.  Version 6a is current.
@c Check from host with legal IP address
@item XPM
@uref{ftp://ftp.x.org/contrib/libraries/}.  Version 3.4j is current.
Older versions of this package are known to cause XEmacs crashes.

@item TIFF
@uref{ftp://ftp.sgi.com/graphics/tiff/}.  v3.4 is current.  The latest
beta is v3.4b035.  There is a HOWTO here.

@item PNG
@uref{ftp://ftp.uu.net/graphics/png/}.  0.89c is current.  XEmacs
requires a fairly recent version to avoid using temporary files.
@c Check from host with legal IP address

@uref{ftp://swrinde.nde.swri.edu/pub/png/src/}

@item Compface
@uref{ftp://ftp.cs.indiana.edu/pub/faces/compface/}.  This library has
been frozen for about 6 years, and is distributed without version
numbers.  @emph{It should be compiled with the same options that X11 was
compiled with on your system}.  The version of this library at
XEmacs.org includes the @file{xbm2xface.pl} script, written by
@email{stig@@hackvan.com}, which may be useful when generating your own xface.

@item NAS
@uref{ftp://ftp.x.org/contrib/audio/nas/}.
Version 1.2p5 is current.  There is a FAQ here.
@end table

@node Q2.0.10, Q2.0.11, Q2.0.9, Installation
@unnumberedsubsec Q2.0.10: After I run configure I find a core dump, is something wrong?

Not necessarily.  If you have GNU sed 3.0 you should downgrade it to
2.05.  From the @file{README} at prep.ai.mit.edu:

@quotation
sed 3.0 has been withdrawn from distribution.  It has major revisions,
which mostly seem to be improvements; but it turns out to have bugs too
which cause trouble in some common cases.

Tom Lord won't be able to work fixing the bugs until May.  So in the
mean time, we've decided to withdraw sed 3.0 from distribution and make
version 2.05 once again the recommended version.
@end quotation

It has also been observed that the vfork test on Solaris will leave a
core dump.

@node Q2.0.11, Q2.0.12, Q2.0.10, Installation
@unnumberedsubsec Q2.0.11: XEmacs doesn't resolve hostnames.

This is the result of a long-standing problem with SunOS and the fact
that stock SunOS systems do not ship with DNS resolver code in libc.

@email{ckd@@loiosh.kei.com, Christopher Davis} writes:

@quotation
That's correct [The SunOS 4.1.3 precompiled binaries don't do name
lookup].  Since Sun figured that everyone used NIS to do name lookups
(that DNS thing was apparently only a passing fad, right?), the stock
SunOS 4.x systems don't have DNS-based name lookups in libc.

This is also why Netscape ships two binaries for SunOS 4.1.x.

The best solution is to compile it yourself; the configure script will
check to see if you've put DNS in the shared libc and will then proceed
to link against the DNS resolver library code.
@end quotation

@node Q2.0.12, Q2.0.13, Q2.0.11, Installation
@unnumberedsubsec Q2.0.12: Why can't I strip XEmacs?

@email{cognot@@fronsac.ensg.u-nancy.fr, Richard Cognot} writes:

@quotation
Because of the way XEmacs (and every other Emacsen, AFAIK) is built. The
link gives you a bare-boned emacs (called temacs). temacs is then run,
preloading some of the lisp files. The result is then dumped into a new
executable, named xemacs, which will contain all of the preloaded lisp
functions and data.

Now, during the dump itself, the executable (code+data+symbols) is
written on disk using a special unexec() function. This function is
obviously heavily system dependent. And on some systems, it leads to an
executable which, although valid, cannot be stripped without damage. If
memory serves, this is especially the case for AIX binaries. On other
architectures it might work OK.

The Right Way to strip the emacs binary is to strip temacs prior to
dumping xemacs. This will always work, although you can do that only if
you install from sources (as temacs is @file{not} part of the binary
kits).
@end quotation

@email{nat@@nataa.fr.eu.org, Nat Makarevitch} writes:

@quotation
Here is the trick:

@enumerate
@item
[ ./configure; make ]

@item
rm src/xemacs

@item
strip src/temacs

@item
make

@item
cp src/xemacs /usr/local/bin/xemacs

@item
cp lib-src/DOC-19.16-XEmacs
@iftex
\ @*
@end iftex
/usr/local/lib/xemacs-19.16/i586-unknown-linuxaout
@end enumerate
@end quotation

@node Q2.0.13, Q2.0.14, Q2.0.12, Installation
@unnumberedsubsec Q2.0.13: I don't need no steenkin' packages.  Do I?

Strictly speaking, no.  XEmacs will build and install just fine without
any packages installed.  However, only the most basic editing functions
will be available with no packages installed, so installing packages is
an essential part of making your installed XEmacs _useful_.

@node Q2.0.14, Q2.0.15, Q2.0.13, Installation
@unnumberedsubsec Q2.0.14: How do I figure out which packages to install?

Many people really liked the old way that packages were bundled and do
not want to mess with packages at all.  You can grab all the packages at
once like you used to with old XEmacs versions.  Download the file

@file{xemacs-sumo.tar.gz}

For an XEmacs compiled with Mule you also need

@file{xemacs-mule-sumo.tar.gz}

from the @file{packages} directory on your XEmacs mirror archive.
N.B. They are called 'Sumo Tarballs' for good reason. They are
currently about 15MB and 2.3MB (gzipped) respectively.

Install them by

@code{cd $prefix/lib/xemacs ; gunzip -c <tarballname> | tar xf -}

See README.packages for more detailed installation instructions.

As the Sumo tarballs are not regenerated as often as the individual
packages, it is recommended that you use the automatic package tools
afterwards to pick up any recent updates.

@node Q2.0.15, Q2.0.16, Q2.0.14, Installation
@unnumberedsubsec Q2.0.15: EFS fails with "500 AUTH not understood" (NEW)

A typical error: FTP Error: USER request failed; 500 AUTH not understood.

Thanks to giacomo boffi @email{giacomo.boffi@@polimi.it} who recommends
on comp.emacs.xemacs:

   tell your ftp client to not attempt AUTH authentication (or do not
   use FTP servers that don't understand AUTH)

and notes that you need to add an element (often "-u") to
`efs-ftp-program-args'.  Use M-x customize-variable, and verify the
needed flag with `man ftp' or other local documentation.

@node Q2.0.16, Q2.1.1, Q2.0.15, Installation
@unnumberedsubsec Q2.0.16: Cygwin XEmacs won't start: cygXpm-noX4.dll was not found (NEW)

The Cygwin binary distributed with the netinstaller uses an external DLL
to handle XPM images (such as toolbar buttons).  You may get an error like

    This application has failed to start because cygXpm-noX4.dll was not found.
    Re-installing the application may fix this problem.

Andy Piper <andy@@xemacs.org> sez:

    cygXpm-noX4 is part of the cygwin distribution under libraries or
    graphics, but is not installed by default. You need to run the
    cygwin setup again and select this package.

Ie, reinstalling XEmacs won't help because it is not part of the XEmacs
distribution.

@node Q2.1.1, Q2.1.2, Q2.0.16, Installation
@unnumberedsec 2.1: Trouble Shooting
@unnumberedsubsec Q2.1.1: Help!  XEmacs just crashed on me!

First of all, don't panic.  Whenever XEmacs crashes, it tries extremely
hard to auto-save all of your files before dying.  (The main time that
this will not happen is if the machine physically lost power or if you
killed the XEmacs process using @code{kill -9}).  The next time you try
to edit those files, you will be informed that a more recent auto-save
file exists.  You can use @kbd{M-x recover-file} to retrieve the
auto-saved version of the file.

You can use the command @kbd{M-x recover-session} after a crash to pick
up where you left off.

Now, XEmacs is not perfect, and there may occasionally be times, or
particular sequences of actions, that cause it to crash.  If you can
come up with a reproducible way of doing this (or even if you have a
pretty good memory of exactly what you were doing at the time), the
maintainers would be very interested in knowing about it.  The best way
to report a bug is using @kbd{M-x report-emacs-bug} (or by selecting
@samp{Send Bug Report...} from the Help menu).  If that won't work
(e.g. you can't get XEmacs working at all), send ordinary mail to
@email{crashes@@xemacs.org}. @emph{MAKE SURE} to include the output from
the crash, especially including the Lisp backtrace, as well as the
XEmacs configuration from @kbd{M-x describe-installation} (or
equivalently, the file @file{Installation} in the top of the build
tree).  Please note that the @samp{crashes} address is exclusively for
crash reports.  The best way to report bugs in general is through the
@kbd{M-x report-emacs-bug} interface just mentioned, or if necessary by
emailing @email{xemacs-beta@@xemacs.org}.  Note that the developers do
@emph{not} usually follow @samp{comp.emacs.xemacs} on a regular basis;
thus, this is better for general questions about XEmacs than bug
reports.

If at all possible, include a C stack backtrace of the core dump that
was produced.  This shows where exactly things went wrong, and makes it
much easier to diagnose problems.  To do this under Unix, you need to
locate the core file (it's called @file{core}, and is usually sitting in
the directory that you started XEmacs from, or your home directory if
that other directory was not writable).  Then, go to that directory and
execute a command like:

@example
gdb `which xemacs` core
@end example

and then issue the command @samp{where} to get the stack backtrace.  You
might have to use @code{dbx} or some similar debugger in place of
@code{gdb}.  If you don't have any such debugger available, complain to
your system administrator.

It's possible that a core file didn't get produced, in which case you're
out of luck.  Go complain to your system administrator and tell him not
to disable core files by default.  Also see @ref{Q2.1.15}, for tips and
techniques for dealing with a debugger.

If you're under Microsoft Windows, you're out of luck unless you happen
to have a debugging aid installed on your system, for example Visual
C++.  In this case, the crash will result in a message giving you the
option to enter a debugger (for example, by pressing @samp{Cancel}).  Do
this and locate the stack-trace window. (If your XEmacs was built
without debugging information, the stack trace may not be very useful.)

When making a problem report make sure that:

@enumerate
@item
Report @strong{all} of the information output by XEmacs during the
crash.

@item
You mention what O/S & Hardware you are running XEmacs on.

@item
What version of XEmacs you are running.

@item
What build options you are using.

@item
If the problem is related to graphics and you are running Unix, we will
also need to know what version of the X Window System you are running,
and what window manager you are using.

@item
If the problem happened on a TTY, please include the terminal type.
@end enumerate

Much of the information above is automatically generated by @kbd{M-x
report-emacs-bug}.  Even more, and often useful, information can be
generated by redirecting the output of @code{make} and @code{make check}
to a file (@file{beta.err} is the default used by @code{build-report}),
and executing @kbd{M-x build-report}.

@node Q2.1.2, Q2.1.3, Q2.1.1, Installation
@unnumberedsubsec Q2.1.2: Cryptic Minibuffer messages.

When I try to use some particular option of some particular package, I
get a cryptic error in the minibuffer.

If you can't figure out what's going on, select Options/General
Options/Debug on Error from the Menubar and then try and make the error
happen again.  This will give you a backtrace that may be enlightening.
If not, try reading through this FAQ; if that fails, you could try
posting to comp.emacs.xemacs (making sure to include the backtrace) and
someone may be able to help.  If you can identify which Emacs lisp
source file the error is coming from you can get a more detailed stack
backtrace by doing the following:

@enumerate
@item
Visit the .el file in an XEmacs buffer.

@item
Issue the command @kbd{M-x eval-current-buffer}.

@item
Reproduce the error.
@end enumerate

Depending on the version of XEmacs, you may either select View->Show
Message Log (recent versions), Edit->Show Messages (some earlier
versions) or Help->Recent Keystrokes/Messages (other earlier versions)
from the menubar to see the most recent messages.  This command is bound
to @kbd{C-h l} by default.

@node Q2.1.3, Q2.1.4, Q2.1.2, Installation
@unnumberedsubsec Q2.1.3: Translation Table Syntax messages at Startup

I get tons of translation table syntax error messages during startup.
How do I get rid of them?

There are two causes of this problem.  The first usually only strikes
people using the prebuilt binaries.  The culprit in both cases is the
file @file{XKeysymDB}.

@itemize @bullet
@item
The binary cannot find the @file{XKeysymDB} file.  The location is
hardcoded at compile time so if the system the binary was built on puts
it a different place than your system does, you have problems.  To fix,
set the environment variable @code{XKEYSYMDB} to the location of the
@file{XKeysymDB} file on your system or to the location of the one
included with XEmacs which should be at
@iftex
@*
@end iftex
@file{<xemacs_root_directory>/lib/xemacs-19.16/etc/XKeysymDB}.

@item
The binary is finding the XKeysymDB but it is out-of-date on your system
and does not contain the necessary lines.  Either ask your system
administrator to replace it with the one which comes with XEmacs (which
is the stock R6 version and is backwards compatible) or set your
@code{XKEYSYMDB} variable to the location of XEmacs's described above.
@end itemize

@node Q2.1.4, Q2.1.5, Q2.1.3, Installation
@unnumberedsubsec Q2.1.4: Startup warnings about deducing proper fonts?

How can I avoid the startup warnings about deducing proper fonts?

This is highly dependent on your installation, but try with the
following font as your base font for XEmacs and see what it does:

@format
-adobe-courier-medium-r-*-*-*-120-*-*-*-*-iso8859-1
@end format

More precisely, do the following in your resource file:

@format
Emacs.default.attributeFont: \
-adobe-courier-medium-r-*-*-*-120-*-*-*-*-iso8859-1
@end format

If you just don't want to see the @samp{*Warnings*} buffer at startup
time, you can set this:

@lisp
(setq display-warning-minimum-level 'error)
@end lisp

The buffer still exists; it just isn't in your face.

@node Q2.1.5, Q2.1.6, Q2.1.4, Installation
@unnumberedsubsec Q2.1.5: XEmacs cannot connect to my X Terminal!

Help!  I can not get XEmacs to display on my Envizex X-terminal!

Try setting the @code{DISPLAY} variable using the numeric IP address of
the host you are running XEmacs from.

@node Q2.1.6, Q2.1.7, Q2.1.5, Installation
@unnumberedsubsec Q2.1.6: XEmacs just locked up my Linux X server!

There have been several reports of the X server locking up under Linux.
In all reported cases removing speedo and scaled fonts from the font
path corrected the problem.  This can be done with the command
@code{xset}.

It is possible that using a font server may also solve the problem.

@node Q2.1.7, Q2.1.8, Q2.1.6, Installation
@unnumberedsubsec Q2.1.7: HP Alt key as Meta.

How can I make XEmacs recognize the Alt key of my HP workstation as a
Meta key?

Put the following line into a file and load it with xmodmap(1) before
starting XEmacs:

@example
remove Mod1 = Mode_switch
@end example

@node Q2.1.8, Q2.1.9, Q2.1.7, Installation
@unnumberedsubsec Q2.1.8: got (wrong-type-argument color-instance-p nil)

@email{nataliek@@rd.scitec.com.au, Natalie Kershaw} writes:

@quotation
I am trying to run xemacs 19.13 under X11R4. Whenever I move the mouse I
get the following error. Has anyone seen anything like this? This
doesn't occur on X11R5.

@lisp
Signalling:
(error "got (wrong-type-argument color-instance-p nil)
and I don't know why!")
@end lisp
@end quotation

@email{map01kd@@gold.ac.uk, dinos} writes:

@quotation
I think this is due to undefined resources; You need to define color
backgrounds and foregrounds into your @file{.../app-defaults/Emacs}
like:

@example
*Foreground:    Black   ;everything will be of black on grey95,
*Background:    Grey95  ;unless otherwise specified.
*cursorColor:   Red3    ;red3 cursor with grey95 border.
*pointerColor:  Red3    ;red3 pointer with grey95 border.
@end example
@end quotation

Natalie Kershaw adds:

@quotation
What fixed the problem was adding some more colors to the X color
database (copying the X11R5 colors over), and also defining the
following resources:

@example
xemacs*cursorColor:    black
xemacs*pointerColor:   black
@end example

With the new colors installed the problem still occurs if the above
resources are not defined.

If the new colors are not present then an additional error occurs on
XEmacs startup, which says @samp{Color Red3} not defined.
@end quotation

@node Q2.1.9, Q2.1.10, Q2.1.8, Installation
@unnumberedsubsec Q2.1.9: XEmacs causes my OpenWindows 3.0 server to crash.

The OpenWindows 3.0 server is incredibly buggy.  Your best bet is to
replace it with one from the generic MIT X11 release.  You might also
try disabling parts of your @file{init.el}/@file{.emacs}, like those
that enable background pixmaps.

@node Q2.1.10, Q2.1.11, Q2.1.9, Installation
@unnumberedsubsec Q2.1.10: Warnings from incorrect key modifiers.

The following information comes from the @file{PROBLEMS} file that comes
with XEmacs.

If you're having troubles with HP/UX it is because HP/UX defines the
modifiers wrong in X.  Here is a shell script to fix the problem; be
sure that it is run after VUE configures the X server.

@example
#! /bin/sh
xmodmap 2> /dev/null - << EOF
keysym Alt_L = Meta_L
keysym Alt_R = Meta_R
EOF

xmodmap - << EOF
clear mod1
keysym Mode_switch = NoSymbol
add mod1 = Meta_L
keysym Meta_R = Mode_switch
add mod2 = Mode_switch
EOF
@end example

@node Q2.1.11, Q2.1.12, Q2.1.10, Installation
@unnumberedsubsec Q2.1.11: @samp{Can't instantiate image error...} in toolbar
@c New

@email{expt@@alanine.ram.org, Dr. Ram Samudrala} writes:

I just installed the XEmacs (20.4-2) RPMS that I downloaded from
@uref{http://www.xemacs.org/}.  Everything works fine, except that when
I place my mouse over the toolbar, it beeps and gives me this message:

@example
 Can't instantiate image (probably cached):
 [xbm :mask-file "/usr/include/X11/bitmaps/leftptrmsk :mask-data
 (16 16 <strange control characters> ...
@end example

@email{kyle_jones@@wonderworks.com, Kyle Jones} writes:
@quotation
This is problem specific to some Chips and Technologies video
chips, when running XFree86.  Putting

@code{Option "sw_cursor"}

in @file{XF86Config} gets rid of the problem.
@end quotation

@node Q2.1.12, Q2.1.13, Q2.1.11, Installation
@unnumberedsubsec Q2.1.12: Problems with Regular Expressions on DEC OSF1.

I have xemacs 19.13 running on an alpha running OSF1 V3.2 148 and ispell
would not run because it claimed the version number was incorrect
although it was indeed OK. I traced the problem to the regular
expression handler.

@email{douglask@@dstc.edu.au, Douglas Kosovic} writes:

@quotation
Actually it's a DEC cc optimization bug that screws up the regexp
handling in XEmacs.

Rebuilding using the @samp{-migrate} switch for DEC cc (which uses a
different sort of optimization) works fine.
@end quotation

See @file{xemacs-19_13-dunix-3_2c.patch} at the following URL on how to
build with the @samp{-migrate} flag:

@example
@uref{http://www-digital.cern.ch/carney/emacs/emacs.html}
@c Link above, <URL:http://www-digital.cern.ch/carney/emacs/emacs.html> is
@c dead. And the directory `carney' is empty.



@end example

NOTE: There have been a variety of other problems reported that are
fixed in this fashion.

@node Q2.1.13, Q2.1.14, Q2.1.12, Installation
@unnumberedsubsec Q2.1.13: HP/UX 10.10 and @code{create_process} failure.

@email{Dave.Carrigan@@ipl.ca, Dave Carrigan} writes:

@quotation
With XEmacs 19.13 and HP/UX 10.10, anything that relies on the
@code{create_process} function fails. This breaks a lot of things
(shell-mode, compile, ange-ftp, to name a few).
@end quotation

@email{johnson@@dtc.hp.com, Phil Johnson} writes:

@quotation
This is a problem specific to HP-UX 10.10.  It only occurs when XEmacs
is compiled for shared libraries (the default), so you can work around
it by compiling a statically-linked binary (run configure with
@samp{--dynamic=no}).

I'm not sure whether the problem is with a particular shared library or
if it's a kernel problem which crept into 10.10.
@end quotation

@email{cognot@@ensg.u-nancy.fr, Richard Cognot} writes:

@quotation
I had a few problems with 10.10. Apparently, some of them were solved by
forcing a static link of libc (manually).
@end quotation

@node Q2.1.14, Q2.1.15, Q2.1.13, Installation
@unnumberedsubsec Q2.1.14: @kbd{C-g} doesn't work for me.  Is it broken?

@email{ben@@xemacs.org, Ben Wing} writes:

@quotation
@kbd{C-g} does work for most people in most circumstances.  If it
doesn't, there are only two explanations:

@enumerate
@item
The code is wrapped with a binding of @code{inhibit-quit} to
@code{t}.  @kbd{Ctrl-Shift-G} should still work, I think.

@item
SIGIO is broken on your system, but BROKEN_SIGIO isn't defined.
@end enumerate

To test #2, try executing @code{(while t)} from the @samp{*scratch*}
buffer.  If @kbd{C-g} doesn't interrupt, then you're seeing #2.
@end quotation

@email{terra@@diku.dk, Morten Welinder} writes:

@quotation
On some (but @emph{not} all) machines a hung XEmacs can be revived by
@code{kill -FPE <pid>}.  This is a hack, of course, not a solution.
This technique works on a Sun4 running 4.1.3_U1.  To see if it works for
you, start another XEmacs and test with that first.  If you get a core
dump the method doesn't work and if you get @samp{Arithmetic error} then
it does.
@end quotation

@node Q2.1.15, Q2.1.16, Q2.1.14, Installation
@unnumberedsubsec Q2.1.15: How to debug an XEmacs problem with a debugger

If XEmacs does crash on you, one of the most productive things you can
do to help get the bug fixed is to poke around a bit with the debugger.
Here are some hints:

@itemize @bullet
@item
First of all, if the crash is at all reproducible, consider very
strongly recompiling your XEmacs with debugging symbols and with no
optimization (e.g. with GCC use the compiler flags @samp{-g -O0} --
that's an "oh" followed by a zero), and with the configure options
@samp{--debug=yes} and @samp{--error-checking=all}.  This will make your
XEmacs run somewhat slower, but you are a lot more likely to catch the
problem earlier (closer to its source).  It makes it a lot easier to
determine what's going on with a debugger.

@item
If it's not a true crash (@emph{i.e.}, XEmacs is hung, or a zombie
process), or it's inconvenient to run XEmacs again because XEmacs is
already running or is running in batch mode as part of a bunch of
scripts, you may be able to attach to the existing process with your
debugger.  Most debuggers let you do this by substituting the process ID
for the core file when you invoke the debugger from the command line, or
by using the @code{attach} command or something similar.

@item
If you're able to run XEmacs under a debugger and reproduce the crash,
here are some things you can do:

@item
If XEmacs is hitting an assertion failure, put a breakpoint on
@code{assert_failed()}.

@item
If XEmacs is hitting some weird Lisp error that's causing it to crash
(e.g. during startup), put a breakpoint on @code{signal_1()}---this is
declared static in eval.c.

@item
If XEmacs is outputting lots of X errors, put a breakpoint on
@code{x_error_handler()}; that will tell you which call is causing them.

@item
Internally, you will probably see lots of variables that hold objects of
type @code{Lisp_Object}.  These are references to Lisp objects.
Printing them out with the debugger probably won't be too
useful---you'll likely just see a number.  To decode them, do this:

@example
call dp (OBJECT)
@end example

where @var{OBJECT} is whatever you want to decode (it can be a variable,
a function call, etc.).  This uses the Lisp printing routines to out a
readable representation on the TTY from which the xemacs process was
invoked.

@item
If you want to get a Lisp backtrace showing the Lisp call
stack, do this:

@example
call db ()
@end example

@item
Using @code{dp} and @code{db} has two disadvantages - they can only be
used with a running (including hung or zombie) xemacs process, and they
do not display the internal C structure of a Lisp Object.  Even if all
you've got is a core dump, all is not lost.

If you're using GDB, there are some macros in the file
@file{src/.gdbinit} in the XEmacs source distribution that should make
it easier for you to decode Lisp objects.  This file is automatically
read by gdb if gdb is run in the directory where xemacs was built, and
contains these useful macros to inspect the state of xemacs:

@table @code
@item pobj
Usage: pobj lisp_object @*
Print the internal C representation of a lisp object.

@item xtype
Usage: xtype lisp_object @*
Print the Lisp type of a lisp object.

@item lbt
Usage: lbt @*
Print the current Lisp stack trace.
Requires a running xemacs process.  (It works by calling the db
routine described above.)

@item ldp
Usage: ldp lisp_object @*
Print a Lisp Object value using the Lisp printer.
Requires a running xemacs process.  (It works by calling the dp
routine described above.)

@item run-temacs
Usage: run-temacs @*
Run temacs interactively, like xemacs.
Use this with debugging tools (like purify) that cannot deal with dumping,
or when temacs builds successfully, but xemacs does not.

@item dump-temacs
Usage: dump-temacs @*
Run the dumping part of the build procedure.
Use when debugging temacs, not xemacs!
Use this when temacs builds successfully, but xemacs does not.

@item check-xemacs
Usage: check-xemacs @*
Run the test suite.  Equivalent to 'make check'.

@item check-temacs
Usage: check-temacs @*
Run the test suite on temacs.  Equivalent to 'make check-temacs'.
Use this with debugging tools (like purify) that cannot deal with dumping,
or when temacs builds successfully, but xemacs does not.
@end table

If you are using Sun's @file{dbx} debugger, there is an equivalent file
@file{src/.dbxrc}, which defines the same commands for dbx.

@item
If you're using a debugger to get a C stack backtrace and you're seeing
stack traces with some of the innermost frames mangled, it may be due to
dynamic linking. (This happens especially under Linux.) Consider
reconfiguring with @samp{--dynamic=no}.  Also, sometimes (again under
Linux), stack backtraces of core dumps will have the frame where the
fatal signal occurred mangled; if you can obtain a stack trace while
running the XEmacs process under a debugger, the stack trace should be
clean.

@email{1CMC3466@@ibm.mtsac.edu, Curtiss} suggests upgrading to ld.so
version 1.8 if dynamic linking and debugging is a problem on Linux.

@item
If you're using a debugger to get a C stack backtrace and you're
getting a completely mangled and bogus stack trace, it's probably due to
one of the following:

@enumerate a
@item
Your executable has been stripped.  Bad news.  Tell your sysadmin not to
do this---it doesn't accomplish anything except to save a bit of disk
space, and makes debugging much much harder.

@item
Your stack is getting trashed.  Debugging this is hard; you have to do a
binary-search type of narrowing down where the crash occurs, until you
figure out exactly which line is causing the problem.  Of course, this
only works if the bug is highly reproducible.  Also, in many cases if
you run XEmacs from the debugger, the debugger can protect the stack
somewhat.  However, if the stack is being smashed, it is typically the
case that there is a wild pointer somewhere in the program, often quite
far from where the crash occurs.

@item
If your stack trace has exactly one frame in it, with address 0x0, this
could simply mean that XEmacs attempted to execute code at that address,
e.g. through jumping to a null function pointer.  Unfortunately, under
those circumstances, GDB under Linux doesn't know how to get a stack
trace. (Yes, this is the fourth Linux-related problem I've mentioned.  I
have no idea why GDB under Linux is so bogus.  Complain to the GDB
authors, or to comp.os.linux.development.system.) Again, you'll have to
use the narrowing-down process described above.

@item
You will get a Lisp backtrace output when XEmacs crashes, so you'll have
something useful.

@end enumerate

@item
If you compile with the newer gcc variants gcc-2.8 or egcs, you will
also need gdb 4.17 or above.  Earlier releases of gdb can't handle the
debug information generated by the newer compilers.

@item
In versions of XEmacs before 21.2.27, @file{src/.gdbinit} was named
@file{src/gdbinit}.  This had the disadvantage of not being sourced
automatically by gdb, so you had to set that up yourself.

@item
If you are running Microsoft Windows, the the file @file{nt/README} for
further information about debugging XEmacs.

@end itemize

@node Q2.1.16, Q2.1.17, Q2.1.15, Installation
@unnumberedsubsec Q2.1.16: XEmacs crashes in @code{strcat} on HP/UX 10

From the problems database (through
the former address http://support.mayfield.hp.com/):

@example
Problem Report: 5003302299
Status:         Open

System/Model:   9000/700
Product Name:   HPUX S800 10.0X
Product Vers:   9245XB.10.00

Description: strcat(3C) may read beyond
end of source string, can cause SIGSEGV


*** PROBLEM TEXT ***
strcat(3C) may read beyond the source string onto an unmapped page,
causing a segmentation violation.
@end example

@node Q2.1.17, Q2.1.18, Q2.1.16, Installation
@unnumberedsubsec Q2.1.17: @samp{Marker does not point anywhere}

As with other errors, set @code{debug-on-error} to @code{t} to get the
backtrace when the error occurs.  Specifically, two problems have been
reported (and fixed).

@enumerate
@item
A problem with line-number-mode in XEmacs 19.14 affected a large number
of other packages.  If you see this error message, turn off
line-number-mode.

@item
A problem with some early versions of Gnus 5.4 caused this error.
Upgrade your Gnus.
@end enumerate

@node Q2.1.18, Q2.1.19, Q2.1.17, Installation
@unnumberedsubsec Q2.1.18: XEmacs is outputting lots of X errors.

If this is happening, we would very much like to know what's causing
them.  To find this out, see @ref{Q2.1.15}.  Try to get both a C and Lisp
backtrace, and send them to @email{xemacs-beta@@xemacs.org}.

@node Q2.1.19, Q2.1.20, Q2.1.18, Installation
@unnumberedsubsec Q2.1.19: XEmacs does not follow the local timezone.

When using one of the prebuilt binaries many users have observed that
XEmacs uses the timezone under which it was built, but not the timezone
under which it is running.  The solution is to add:

@lisp
(set-time-zone-rule "MET")
@end lisp

to your @file{init.el}/@file{.emacs} or the @file{site-start.el} file if
you can.  Replace @code{MET} with your local timezone.

@node Q2.1.20, Q2.1.21, Q2.1.19, Installation
@unnumberedsubsec Q2.1.20: @samp{Symbol's function definition is void: hkey-help-show.}

This is a problem with a partially loaded hyperbole.  Try adding:

@lisp
(require 'hmouse-drv)
@end lisp

where you load hyperbole and the problem should go away.

@node Q2.1.21, Q2.1.22, Q2.1.20, Installation
@unnumberedsubsec Q2.1.21: [This question intentionally left blank]

@node Q2.1.22, Q2.1.23, Q2.1.21, Installation
@unnumberedsubsec Q2.1.22: XEmacs seems to take a really long time to do some things

@email{dmoore@@ucsd.edu, David Moore} writes:

@quotation
Two things you can do:

1) C level:

When you see it going mad like this, you might want to use gdb from an
'xterm' to attach to the running process and get a stack trace.  To do
this just run:

@example
gdb /path/to/xemacs/xemacs ####
@end example

Where @code{####} is the process id of your xemacs, instead of
specifying the core.  When gdb attaches, the xemacs will stop [1] and
you can type `where' in gdb to get a stack trace as usual.  To get
things moving again, you can just type `quit' in gdb.  It'll tell you
the program is running and ask if you want to quit anyways.  Say 'y' and
it'll quit and have your emacs continue from where it was at.

2) Lisp level:

Turn on debug-on-quit early on.  When you think things are going slow
hit C-g and it may pop you in the debugger so you can see what routine
is running.  Press `c' to get going again.

debug-on-quit doesn't work if something's turned on inhibit-quit or in
some other strange cases.
@end quotation

@node Q2.1.23, Q2.1.24, Q2.1.22, Installation
@unnumberedsubsec Q2.1.23:  Movemail on Linux does not work for XEmacs 19.15 and later.

Movemail used to work fine in 19.14 but has stopped working in 19.15
and 20.x.  I am using Linux.

@email{steve@@xemacs.org, SL Baur} writes:

@quotation
Movemail on Linux used to default to using flock file locking.  With
19.15 and later versions it now defaults to using @code{.lock} file
locking.  If this is not appropriate for your system, edit src/s/linux.h
and uncomment the line that reads:

@example
#define MAIL_USE_FLOCK
@end example
@end quotation

@node Q2.1.24, Q2.1.25, Q2.1.23, Installation
@unnumberedsubsec Q2.1.24:  XEmacs won't start without network.

If XEmacs starts when you're on the network, but fails when you're not
on the network, you may be missing a "localhost" entry in your
@file{/etc/hosts} file.  The file should contain an entry like:

@example
127.0.0.1        localhost
@end example

Add that line, and XEmacs will be happy.

@node Q2.1.25,  , Q2.1.24, Installation
@unnumberedsubsec Q2.1.25::  After upgrading, XEmacs won't do `foo' any more!

You have been used to doing `foo', but now when you invoke it (or click
the toolbar button or select the menu item), nothing (or an error)
happens.  The simplest explanation is that you are missing a package
that is essential to you.  You can either track it down and install it
(there is a list of packages and brief descriptions of their contents in
@file{etc/PACKAGES}), or install the `Sumo Tarball' (@pxref{Q2.0.14}).

@c #### should xref to XEmacs manual here

@node Customization, Subsystems, Installation, Top
@unnumbered 3 Customization and Options

This is part 3 of the XEmacs Frequently Asked Questions list.  This
section is devoted to Customization and screen settings.

@menu
Customization---Emacs Lisp and @file{init.el}/@file{.emacs}:
* Q3.0.1::      What version of Emacs am I running?
* Q3.0.2::      How do I evaluate Elisp expressions?
* Q3.0.3::      @code{(setq tab-width 6)} behaves oddly.
* Q3.0.4::      How can I add directories to the @code{load-path}?
* Q3.0.5::      How to check if a lisp function is defined?
* Q3.0.6::      Can I force the output of @code{(face-list)} to a buffer?
* Q3.0.7::      Font selections don't get saved after @code{Save Options}.
* Q3.0.8::      How do I make a single minibuffer frame?
* Q3.0.9::      What is @code{Customize}?

X Window System & Resources:
* Q3.1.1::      Where is a list of X resources?
* Q3.1.2::      How can I detect a color display?
* Q3.1.3::      [This question intentionally left blank]
* Q3.1.4::      [This question intentionally left blank]
* Q3.1.5::      How can I get the icon to just say @samp{XEmacs}?
* Q3.1.6::      How can I have the window title area display the full path?
* Q3.1.7::      @samp{xemacs -name junk} doesn't work?
* Q3.1.8::      @samp{-iconic} doesn't work.

Textual Fonts & Colors:
* Q3.2.1::      How can I set color options from @file{init.el}/@file{.emacs}?
* Q3.2.2::      How do I set the text, menu and modeline fonts?
* Q3.2.3::      How can I set the colors when highlighting a region?
* Q3.2.4::      How can I limit color map usage?
* Q3.2.5::      My tty supports color, but XEmacs doesn't use them.
* Q3.2.6::      Can I have pixmap backgrounds in XEmacs?
* Q3.2.7::      How do I display non-ASCII characters?

The Modeline:
* Q3.3.1::      How can I make the modeline go away?
* Q3.3.2::      How do you have XEmacs display the line number in the modeline?
* Q3.3.3::      How do I get XEmacs to put the time of day on the modeline?
* Q3.3.4::      How do I turn off current chapter from AUC TeX modeline?
* Q3.3.5::      How can one change the modeline color based on the mode used?

3.4 Multiple Device Support:
* Q3.4.1::      How do I open a frame on another screen of my multi-headed display?
* Q3.4.2::      Can I really connect to a running XEmacs after calling up over a modem?  How?

3.5 The Keyboard:
* Q3.5.1::      How can I bind complex functions (or macros) to keys?
* Q3.5.2::      How can I stop down-arrow from adding empty lines to the bottom of my buffers?
* Q3.5.3::      How do I bind C-. and C-; to scroll one line up and down?
* Q3.5.4::      Globally binding @kbd{Delete}?
* Q3.5.5::      Scrolling one line at a time.
* Q3.5.6::      How to map @kbd{Help} key alone on Sun type4 keyboard?
* Q3.5.7::      How can you type in special characters in XEmacs?
* Q3.5.8::      [This question intentionally left blank]
* Q3.5.9::      How do I make the Delete key delete forward?
* Q3.5.10::     Can I turn on @dfn{sticky} modifier keys?
* Q3.5.11::     How do I map the arrow keys?

The Cursor:
* Q3.6.1::      Is there a way to make the bar cursor thicker?
* Q3.6.2::      Is there a way to get back the old block cursor where the cursor covers the character in front of the point?
* Q3.6.3::      Can I make the cursor blink?

The Mouse and Highlighting:
* Q3.7.1::      How can I turn off Mouse pasting?
* Q3.7.2::      How do I set control/meta/etc modifiers on mouse buttons?
* Q3.7.3::      Clicking the left button does not do anything in buffer list.
* Q3.7.4::      How can I get a list of buffers when I hit mouse button 3?
* Q3.7.5::      Why does cut-and-paste not work between XEmacs and a cmdtool?
* Q3.7.6::      How I can set XEmacs up so that it pastes where the text cursor is?
* Q3.7.7::      How do I select a rectangular region?
* Q3.7.8::      Why does @kbd{M-w} take so long?

The Menubar and Toolbar:
* Q3.8.1::      How do I get rid of the menu (or menubar)?
* Q3.8.2::      Can I customize the basic menubar?
* Q3.8.3::      How do I control how many buffers are listed in the menu @code{Buffers} list?
* Q3.8.4::      Resources like @code{Emacs*menubar*font} are not working?
* Q3.8.5::      How can I bind a key to a function to toggle the toolbar?

Scrollbars:
* Q3.9.1::      How can I disable the scrollbar?
* Q3.9.2::      How can one use resources to change scrollbar colors?
* Q3.9.3::      Moving the scrollbar can move the point; can I disable this?
* Q3.9.4::      How can I turn off automatic horizontal scrolling in specific modes?

Text Selections:
* Q3.10.1::     How can I turn off or change highlighted selections?
* Q3.10.2::     How do I get that typing on an active region removes it?
* Q3.10.3::     Can I turn off the highlight during isearch?
* Q3.10.4::     How do I turn off highlighting after @kbd{C-x C-p} (mark-page)?
* Q3.10.5::     The region disappears when I hit the end of buffer while scrolling.
* Q3.10.6::     Why is killing so slow?
@end menu

@node Q3.0.1, Q3.0.2, Customization, Customization
@unnumberedsec 3.0: Customization -- Emacs Lisp and @file{init.el}/@file{.emacs}
@unnumberedsubsec Q3.0.1: What version of Emacs am I running?

How can @file{init.el}/@file{.emacs} determine which of the family of
Emacsen I am using?

To determine if you are currently running GNU Emacs 18, GNU Emacs 19,
XEmacs 19, XEmacs 20, or Epoch, and use appropriate code, check out the
example given in @file{etc/sample.init.el} (@file{etc/sample.emacs} in
XEmacs versions prior to 21.4).  There are other nifty things in there
as well!

For all new code, all you really need to do is:

@lisp
(defvar running-xemacs (string-match "XEmacs\\|Lucid" emacs-version))
@end lisp

@node Q3.0.2, Q3.0.3, Q3.0.1, Customization
@unnumberedsubsec Q3.0.2: How can I evaluate Emacs-Lisp expressions?

I know I can evaluate Elisp expressions from @code{*scratch*} buffer
with @kbd{C-j} after the expression.  How do I do it from another
buffer?

Press @kbd{M-:} (the default binding of @code{eval-expression}), and
enter the expression to the minibuffer.

@node Q3.0.3, Q3.0.4, Q3.0.2, Customization
@unnumberedsubsec Q3.0.3: @code{(setq tab-width 6)} behaves oddly.

If you put @code{(setq tab-width 6)} in your
@file{init.el}/@file{.emacs} file it does not work!  Is there a reason
for this?  If you do it at the EVAL prompt it works fine!! How strange.

Use @code{setq-default} instead, since @code{tab-width} is
all-buffer-local.

@node Q3.0.4, Q3.0.5, Q3.0.3, Customization
@unnumberedsubsec Q3.0.4: How can I add directories to the @code{load-path}?

Here are two ways to do that, one that puts your directories at the
front of the load-path, the other at the end:

@lisp
;;; Add things at the beginning of the load-path, do not add
;;; duplicate directories:
(pushnew "bar" load-path :test 'equal)

(pushnew "foo" load-path :test 'equal)

;;; Add things at the end, unconditionally
(setq load-path (nconc load-path '("foo" "bar")))
@end lisp

@email{keithh@@nortel.ca, keith (k.p.) hanlan} writes:

@quotation
To add directories using Unix shell metacharacters use
@file{expand-file-name} like this:

@lisp
(push (expand-file-name "~keithh/.emacsdir") load-path)
@end lisp
@end quotation

@node Q3.0.5, Q3.0.6, Q3.0.4, Customization
@unnumberedsubsec Q3.0.5: How to check if a lisp function is defined?

Use the following elisp:

@lisp
(fboundp 'foo)
@end lisp

It's almost always a mistake to test @code{emacs-version} or any similar
variables.

Instead, use feature-tests, such as @code{featurep}, @code{boundp},
@code{fboundp}, or even simple behavioral tests, eg.:

@lisp
(defvar foo-old-losing-code-p
  (condition-case nil (progn (losing-code t) nil)
    (wrong-number-of-arguments t)))
@end lisp

There is an incredible amount of broken code out there which could work
much better more often in more places if it did the above instead of
trying to divine its environment from the value of one variable.

@node Q3.0.6, Q3.0.7, Q3.0.5, Customization
@unnumberedsubsec Q3.0.6: Can I force the output of @code{(face-list)} to a buffer?

It would be good having it in a buffer, as the output of
@code{(face-list)} is too wide to fit to a minibuffer.

Evaluate the expression in the @samp{*scratch*} buffer with point after
the rightmost paren and typing @kbd{C-j}.

If the minibuffer smallness is the only problem you encounter, you can
simply press @kbd{C-h l} to get the former minibuffer contents in a
buffer.

@node Q3.0.7, Q3.0.8, Q3.0.6, Customization
@unnumberedsubsec Q3.0.7: Font selections in don't get saved after @code{Save Options}.

@email{mannj@@ll.mit.edu, John Mann} writes:

@quotation
You have to go to Options->Frame Appearance and unselect
@samp{Frame-Local Font Menu}.  If this option is selected, font changes
are only applied to the @emph{current} frame and do @emph{not} get saved
when you save options.
@end quotation

Also, set the following in your @file{init.el}/@file{.emacs}:

@lisp
(setq options-save-faces t)
@end lisp

@node Q3.0.8, Q3.0.9, Q3.0.7, Customization
@unnumberedsubsec Q3.0.8: How do I get a single minibuffer frame?

@email{acs@@acm.org, Vin Shelton} writes:

@lisp
(setq initial-frame-plist '(minibuffer nil))
(setq default-frame-plist '(minibuffer nil))
(setq default-minibuffer-frame
      (make-frame
       '(minibuffer only
                    width 86
                    height 1
                    menubar-visible-p nil
                    default-toolbar-visible-p nil
                    name "minibuffer"
                    top -2
                    left -2
                    has-modeline-p nil)))
(frame-notice-user-settings)
@end lisp

@strong{Please note:} The single minibuffer frame may not be to everyone's
taste, and there any number of other XEmacs options settings that may
make it difficult or inconvenient to use.

@node Q3.0.9, Q3.1.1, Q3.0.8, Customization
@unnumberedsubsec Q3.0.9: What is @code{Customize}?

Starting with XEmacs 20.2 there is new system 'Customize' for customizing
XEmacs options.

You can access @code{Customize} from the @code{Options} menu
or invoking one of customize commands by typing eg.
@kbd{M-x customize}, @kbd{M-x customize-face},
@kbd{M-x customize-variable} or @kbd{M-x customize-apropos}.

Starting with XEmacs 20.3 there is also new `browser' mode for Customize.
Try it out with @kbd{M-x customize-browse}

@node Q3.1.1, Q3.1.2, Q3.0.9, Customization
@unnumberedsec 3.1: X Window System & Resources
@unnumberedsubsec Q3.1.1: Where is a list of X resources?

Search through the @file{NEWS} file for @samp{X Resources}.  A fairly
comprehensive list is given after it.

In addition, an @file{app-defaults} file @file{etc/Emacs.ad} is
supplied, listing the defaults.  The file @file{etc/sample.Xresources}
gives a different set of defaults that you might consider for
installation in your @file{~/.Xresources} file.  It is nearly the same
as @file{etc/Emacs.ad}, but a few entries are altered.  Be careful about
installing the contents of this file into your @file{.Xresources} (or
legacy @file{.Xdefaults}) file if you use GNU Emacs under X11 as well.

@node Q3.1.2, Q3.1.3, Q3.1.1, Customization
@unnumberedsubsec Q3.1.2: How can I detect a color display?

You can test the return value of the function @code{(device-class)}, as
in:

@lisp
(when (eq (device-class) 'color)
  (set-face-foreground  'font-lock-comment-face "Grey")
  (set-face-foreground  'font-lock-string-face  "Red")
  ....
  )
@end lisp

@node Q3.1.3, Q3.1.4, Q3.1.2, Customization
@unnumberedsubsec Q3.1.3: [This question intentionally left blank]

@node Q3.1.4, Q3.1.5, Q3.1.3, Customization
@unnumberedsubsec Q3.1.4: [This question intentionally left blank]

@node Q3.1.5, Q3.1.6, Q3.1.4, Customization
@unnumberedsubsec Q3.1.5: How can I get the icon to just say @samp{XEmacs}?

I'd like the icon to just say @samp{XEmacs}, and not include the name of
the current file in it.

Add the following line to your @file{init.el}/@file{.emacs}:

@lisp
(setq frame-icon-title-format "XEmacs")
@end lisp

@node Q3.1.6, Q3.1.7, Q3.1.5, Customization
@unnumberedsubsec Q3.1.6: How can I have the window title area display the full path?

I'd like to have the window title area display the full directory/name
of the current buffer file and not just the name.

Add the following line to your @file{init.el}/@file{.emacs}:

@lisp
(setq frame-title-format "%S: %f")
@end lisp

A more sophisticated title might be:

@lisp
(setq frame-title-format
      '("%S: " (buffer-file-name "%f"
                                 (dired-directory dired-directory "%b"))))
@end lisp

That is, use the file name, or the dired-directory, or the buffer name.

@node Q3.1.7, Q3.1.8, Q3.1.6, Customization
@unnumberedsubsec Q3.1.7: @samp{xemacs -name junk} doesn't work?

When I run @samp{xterm -name junk}, I get an xterm whose class name
according to xprop, is @samp{junk}.  This is the way it's supposed to
work, I think.  When I run @samp{xemacs -name junk} the class name is
not set to @samp{junk}.  It's still @samp{emacs}.  What does
@samp{xemacs -name} really do?  The reason I ask is that my window
manager (fvwm) will make a window sticky and I use XEmacs to read my
mail.  I want that XEmacs window to be sticky, without having to use the
window manager's function to set the window sticky.  What gives?

@samp{xemacs -name} sets the application name for the program (that is,
the thing which normally comes from @samp{argv[0]}).  Using @samp{-name}
is the same as making a copy of the executable with that new name.  The
@code{WM_CLASS} property on each frame is set to the frame-name, and the
application-class.  So, if you did @samp{xemacs -name FOO} and then
created a frame named @var{BAR}, you'd get an X window with WM_CLASS =
@code{( "BAR", "Emacs")}.  However, the resource hierarchy for this
widget would be:

@example
Name:    FOO   .shell             .container   .BAR
Class:   Emacs .TopLevelEmacsShell.EmacsManager.EmacsFrame
@end example

instead of the default

@example
Name:    xemacs.shell             .container   .emacs
Class:   Emacs .TopLevelEmacsShell.EmacsManager.EmacsFrame
@end example


It is arguable that the first element of WM_CLASS should be set to the
application-name instead of the frame-name, but I think that's less
flexible, since it does not give you the ability to have multiple frames
with different WM_CLASS properties.  Another possibility would be for
the default frame name to come from the application name instead of
simply being @samp{emacs}.  However, at this point, making that change
would be troublesome: it would mean that many users would have to make
yet another change to their resource files (since the default frame name
would suddenly change from @samp{emacs} to @samp{xemacs}, or whatever
the executable happened to be named), so we'd rather avoid it.

To make a frame with a particular name use:

@lisp
(make-frame '((name . "the-name")))
@end lisp

@node Q3.1.8, Q3.2.1, Q3.1.7, Customization
@unnumberedsubsec Q3.1.8: @samp{-iconic} doesn't work.

When I start up XEmacs using @samp{-iconic} it doesn't work right.
Using @samp{-unmapped} on the command line, and setting the
@code{initiallyUnmapped} X Resource don't seem to help much either...

@email{ben@@xemacs.org, Ben Wing} writes:

@quotation
Ugh, this stuff is such an incredible mess that I've about given up
getting it to work.  The principal problem is numerous window-manager
bugs...
@end quotation

@node Q3.2.1, Q3.2.2, Q3.1.8, Customization
@unnumberedsec 3.2: Textual Fonts & Colors
@unnumberedsubsec Q3.2.1: How can I set color options from @file{init.el}/@file{.emacs}?

How can I set the most commonly used color options from my
@file{init.el}/@file{.emacs} instead of from my @file{.Xresources}?

Like this:

@lisp
(set-face-background 'default      "bisque") ; frame background
(set-face-foreground 'default      "black") ; normal text
(set-face-background 'zmacs-region "red") ; When selecting w/
                                        ; mouse
(set-face-foreground 'zmacs-region "yellow")
(set-face-font       'default      "*courier-bold-r*120-100-100*")
(set-face-background 'highlight    "blue") ; Ie when selecting
                                        ; buffers
(set-face-foreground 'highlight    "yellow")
(set-face-background 'modeline     "blue") ; Line at bottom
                                        ; of buffer
(set-face-foreground 'modeline     "white")
(set-face-font       'modeline     "*bold-r-normal*140-100-100*")
(set-face-background 'isearch      "yellow") ; When highlighting
                                        ; while searching
(set-face-foreground 'isearch      "red")
(setq x-pointer-foreground-color   "black") ; Adds to bg color,
                                        ; so keep black
(setq x-pointer-background-color   "blue") ; This is color
                                        ; you really
                                        ; want ptr/crsr
@end lisp

@node Q3.2.2, Q3.2.3, Q3.2.1, Customization
@unnumberedsubsec Q3.2.2: How do I set the text, menu and modeline fonts?

Note that you should use @samp{Emacs.} and not @samp{Emacs*} when
setting face values.

In @file{.Xresources}:

@example
Emacs.default.attributeFont:  -*-*-medium-r-*-*-*-120-*-*-m-*-*-*
Emacs*menubar*font:           fixed
Emacs.modeline.attributeFont: fixed
@end example

This is confusing because @samp{default} and @samp{modeline} are face
names, and can be found listed with all faces in the current mode by
using @kbd{M-x set-face-font (enter) ?}.  They use the face-specific
resource @samp{attributeFont}.

On the other hand, @samp{menubar} is a normal X thing that uses the
resource @samp{font}.  With Motif it @emph{may be} necessary to use
@samp{fontList} @emph{instead of} @samp{font}.  In @emph{non-Motif}
configurations with Mule it @emph{is} necessary to use @samp{fontSet}
instead of @samp{font}.  (Sorry, there just is no simple recipe here.)

@node Q3.2.3, Q3.2.4, Q3.2.2, Customization
@unnumberedsubsec Q3.2.3: How can I set the colors when highlighting a region?

How can I set the background/foreground colors when highlighting a
region?

You can change the face @code{zmacs-region} either in your
@file{.Xresources}:

@example
Emacs.zmacs-region.attributeForeground: firebrick
Emacs.zmacs-region.attributeBackground: lightseagreen
@end example

or in your @file{init.el}/@file{.emacs}:

@lisp
(set-face-background 'zmacs-region "red")
(set-face-foreground 'zmacs-region "yellow")
@end lisp

@node Q3.2.4, Q3.2.5, Q3.2.3, Customization
@unnumberedsubsec Q3.2.4: How can I limit color map usage?

I'm using Netscape (or another color grabber like XEmacs);
is there any way to limit the number of available colors in the color map?

Answer: No, but you can start Netscape before XEmacs, and it will use
the closest available color if the colormap is full.  You can also limit
the number of colors Netscape uses, using the flags -mono, -ncols <#> or
-install (for mono, limiting to <#> colors, or for using a private color
map).

If you have the money, another solution would be to use a truecolor or
direct color video.

@node Q3.2.5, Q3.2.6, Q3.2.4, Customization
@unnumberedsubsec Q3.2.5: My tty supports color, but XEmacs doesn't use them.

XEmacs tries to automatically determine whether your tty supports color,
but sometimes guesses wrong.  In that case, you can make XEmacs Do The
Right Thing using this Lisp code:

@lisp
(if (eq 'tty (device-type))
    (set-device-class nil 'color))
@end lisp

@node Q3.2.6, Q3.2.7, Q3.2.5, Customization
@unnumberedsubsec Q3.2.6: Can I have pixmap backgrounds in XEmacs?
@c New
@email{jvillaci@@wahnsinnig.extreme.indiana.edu, Juan Villacis} writes:

@quotation
There are several ways to do it.  For example, you could specify a
default pixmap image to use in your @file{~/.Xresources}, e.g.,


@example
  Emacs*EmacsFrame.default.attributeBackgroundPixmap: /path/to/image.xpm
@end example


and then reload ~/.Xresources and restart XEmacs.  Alternatively,
since each face can have its own pixmap background, a better way
would be to set a face's pixmap within your XEmacs init file, e.g.,

@lisp
  (set-face-background-pixmap 'default "/path/to/image.xpm")
  (set-face-background-pixmap 'bold    "/path/to/another_image.xpm")
@end lisp

and so on.  You can also do this interactively via @kbd{M-x edit-faces}.

@end quotation

@node Q3.2.7, Q3.3.1, Q3.2.6, Customization
@unnumberedsubsec Q3.2.7: How do I display non-ASCII characters?
@c New

If you're using a Mule-enabled XEmacs, then display is automatic.  If
you're not seeing the characters you expect, either (1) you don't have
appropriate fonts available or (2) XEmacs did not correctly detect the
coding system (@pxref{Recognize Coding, , , xemacs}).  In case (1),
install fonts as is customary for your platform.  In case (2), you
need to tell XEmacs explicitly what coding systems you're using.
@ref{Specify Coding, , , xemacs}.

If your XEmacs is not Mule-enabled, and for some reason getting a
Mule-enabled XEmacs seems like the wrong thing to do, all is not lost.
You can arrange it by brute force.  In @file{event-Xt.c} (suppress the
urge to look in this file---play Doom instead, because you'll survive
longer), it is written:

@quotation
In a non-Mule world, a user can still have a multi-lingual editor, by
doing @code{(set-face-font "-*-iso8859-2" (current-buffer))} for all
their Latin-2 buffers, etc.
@end quotation

For the related problem of @emph{inputting} non-ASCII characters in a
non-Mule XEmacs, @xref{Q3.5.7}.

@node Q3.3.1, Q3.3.2, Q3.2.7, Customization
@unnumberedsec 3.3: The Modeline
@unnumberedsubsec Q3.3.1: How can I make the modeline go away?

@lisp
(set-specifier has-modeline-p nil)
@end lisp

@c Starting with XEmacs 19.14 the modeline responds to mouse clicks, so if
@c you haven't liked or used the modeline in the past, you might want to
@c try the new version out.
@c
@node Q3.3.2, Q3.3.3, Q3.3.1, Customization
@unnumberedsubsec Q3.3.2: How do you have XEmacs display the line number in the modeline?

Add the following line to your @file{init.el}/@file{.emacs} file to
display the line number:

@lisp
(line-number-mode 1)
@end lisp

Use the following to display the column number:

@lisp
(column-number-mode 1)
@end lisp

Or select from the @code{Options} menu
@iftex
@*
@end iftex
@code{Advanced (Customize)->Emacs->Editing->Basics->Line Number Mode}
and/or
@iftex
@*
@end iftex
@code{Advanced (Customize)->Emacs->Editing->Basics->Column Number Mode}

Or type @kbd{M-x customize @key{RET} editing-basics @key{RET}}.

@node Q3.3.3, Q3.3.4, Q3.3.2, Customization
@unnumberedsubsec Q3.3.3: How do I get XEmacs to put the time of day on the modeline?

Add the following line to your @file{init.el}/@file{.emacs} file to
display the time:

@lisp
(display-time)
@end lisp

See @code{Customize} from the @code{Options} menu for customization.

@node Q3.3.4, Q3.3.5, Q3.3.3, Customization
@unnumberedsubsec Q3.3.4: How do I turn off current chapter from AUC TeX modeline?

With AUC TeX, fast typing is hard because the current chapter, section
etc. are given in the modeline.  How can I turn this off?

It's not AUC TeX, it comes from @code{func-menu} in @file{func-menu.el}.

@c Add this code to your @file{init.el}/@file{.emacs} to turn it off:
@c
@c @lisp
@c (setq fume-display-in-modeline-p nil)
@c @end lisp
@c
@c Or just add a hook to @code{TeX-mode-hook} to turn it off only for TeX
@c mode:
@c
@c @lisp
@c (add-hook 'TeX-mode-hook
@c           '(lambda () (setq fume-display-in-modeline-p nil)))
@c @end lisp
@c
@email{dhughes@@origin-at.co.uk, David Hughes} writes:

@quotation
Try this; you'll still get the function name displayed in the modeline,
but it won't attempt to keep track when you modify the file. To refresh
when it gets out of synch, you simply need click on the @samp{Rescan
Buffer} option in the function-menu.

@lisp
(setq-default fume-auto-rescan-buffer-p nil)
@end lisp
@end quotation

@node Q3.3.5, Q3.4.1, Q3.3.4, Customization
@unnumberedsubsec Q3.3.5: How can one change the modeline color based on the mode used?

You can use something like the following:

@lisp
(add-hook 'lisp-mode-hook
          (lambda ()
            (set-face-background 'modeline "red" (current-buffer))))
@end lisp

Then, when editing a Lisp file (i.e. when in Lisp mode), the modeline
colors change from the default set in your @file{init.el}/@file{.emacs}.
The change will only be made in the buffer you just entered (which
contains the Lisp file you are editing) and will not affect the modeline
colors anywhere else.

Notes:

@itemize @bullet

@item The hook is the mode name plus @code{-hook}.  eg. c-mode-hook,
c++-mode-hook, emacs-lisp-mode-hook (used for your
@file{init.el}/@file{.emacs} or a @file{xx.el} file),
lisp-interaction-mode-hook (the @samp{*scratch*} buffer),
text-mode-hook, etc.

@item
Be sure to use @code{add-hook}, not @code{(setq c-mode-hook xxxx)},
otherwise you will erase anything that anybody has already put on the
hook.

@item
You can also do @code{(set-face-font 'modeline @var{font})},
eg. @code{(set-face-font 'modeline "*bold-r-normal*140-100-100*"
(current-buffer))} if you wish the modeline font to vary based on the
current mode.
@end itemize

There are additional modeline faces, @code{modeline-buffer-id},
@code{modeline-mousable}, and @code{modeline-mousable-minor-mode}, which
you may want to customize.

@node Q3.4.1, Q3.4.2, Q3.3.5, Customization
@unnumberedsec 3.4: Multiple Device Support
@unnumberedsubsec Q3.4.1: How do I open a frame on another screen of my multi-headed display?

Use the command @kbd{M-x make-frame-on-display}.  This command is also
on the File menu in the menubar.

The command @code{make-frame-on-tty} also exists, which will establish a
connection to any tty-like device.  Opening the TTY devices should be
left to @code{gnuclient}, though.

@node Q3.4.2, Q3.5.1, Q3.4.1, Customization
@unnumberedsubsec Q3.4.2: Can I really connect to a running XEmacs after calling up over a modem?  How?

Yes.  Use @code{gnuclient -nw}. (Prior to 20.3, use the @code{gnuattach}
program supplied with XEmacs instead.)

Also see @ref{Q5.0.12}.

@node Q3.5.1, Q3.5.2, Q3.4.2, Customization
@unnumberedsec 3.5: The Keyboard
@unnumberedsubsec Q3.5.1: How can I bind complex functions (or macros) to keys?

As an example, say you want the @kbd{paste} key on a Sun keyboard to
insert the current Primary X selection at point. You can accomplish this
with:

@lisp
(define-key global-map [f18] 'x-insert-selection)
@end lisp

However, this only works if there is a current X selection (the
selection will be highlighted).  The functionality I like is for the
@kbd{paste} key to insert the current X selection if there is one,
otherwise insert the contents of the clipboard.  To do this you need to
pass arguments to @code{x-insert-selection}.  This is done by wrapping
the call in a 'lambda form:

@lisp
(global-set-key [f18]
  (lambda () (interactive) (x-insert-selection t nil)))
@end lisp

This binds the f18 key to a @dfn{generic} functional object.  The
interactive spec is required because only interactive functions can be
bound to keys.

For the FAQ example you could use:

@lisp
(global-set-key [(control ?.)]
  (lambda () (interactive) (scroll-up 1)))
(global-set-key [(control ?;)]
  (lambda () (interactive) (scroll-up -1)))
@end lisp

This is fine if you only need a few functions within the lambda body.
If you're doing more it's cleaner to define a separate function as in
question 3.5.3 (@pxref{Q3.5.3}).

@node Q3.5.2, Q3.5.3, Q3.5.1, Customization
@unnumberedsubsec Q3.5.2: How can I stop down-arrow from adding empty lines to the bottom of my buffers?

Add the following line to your @file{init.el}/@file{.emacs} file:

@lisp
(setq next-line-add-newlines nil)
@end lisp

This has been the default setting in XEmacs for some time.

@node Q3.5.3, Q3.5.4, Q3.5.2, Customization
@unnumberedsubsec Q3.5.3: How do I bind C-. and C-; to scroll one line up and down?

Add the following (Thanks to @email{mly@@adoc.xerox.com, Richard Mlynarik} and
@email{wayne@@zen.cac.stratus.com, Wayne Newberry}) to @file{.emacs}:

@lisp
(defun scroll-up-one-line ()
  (interactive)
  (scroll-up 1))

(defun scroll-down-one-line ()
  (interactive)
  (scroll-down 1))

(global-set-key [(control ?.)] 'scroll-up-one-line) ; C-.
(global-set-key [(control ?;)] 'scroll-down-one-line) ; C-;
@end lisp

The key point is that you can only bind simple functions to keys; you
can not bind a key to a function that you're also passing arguments to.
(@pxref{Q3.5.1} for a better answer).

@node Q3.5.4, Q3.5.5, Q3.5.3, Customization
@unnumberedsubsec Q3.5.4: Globally binding @kbd{Delete}?

I cannot manage to globally bind my @kbd{Delete} key to something other
than the default.  How does one do this?

Answer: The problem is that many modes explicitly bind @kbd{Delete}.  To
get around this, try the following:

@lisp
(defun foo ()
  (interactive)
  (message "You hit DELETE"))

(define-key key-translation-map 'delete 'redirected-delete)
(global-set-key 'redirected-delete 'foo)
@end lisp

Also see @ref{Q3.5.10}.

@node Q3.5.5, Q3.5.6, Q3.5.4, Customization
@unnumberedsubsec Q3.5.5: Scrolling one line at a time.

Can the cursor keys scroll the screen a line at a time, rather than the
default half page jump?  I tend it to find it disorienting.

Try this:

@lisp
(defun scroll-one-line-up (&optional arg)
  "Scroll the selected window up (forward in the text) one line (or N lines)."
  (interactive "p")
  (scroll-up (or arg 1)))

(defun scroll-one-line-down (&optional arg)
  "Scroll the selected window down (backward in the text) one line (or N)."
  (interactive "p")
  (scroll-down (or arg 1)))

(global-set-key [up]   'scroll-one-line-up)
(global-set-key [down] 'scroll-one-line-down)
@end lisp

The following will also work but will affect more than just the cursor
keys (i.e. @kbd{C-n} and @kbd{C-p}):

@lisp
(setq scroll-step 1)
@end lisp

Starting with XEmacs-20.3 you can also change this with Customize.
Select from the @code{Options} menu
@code{Advanced (Customize)->Emacs->Environment->Windows->Scroll Step...} or type
@kbd{M-x customize @key{RET} windows @key{RET}}.

@node Q3.5.6, Q3.5.7, Q3.5.5, Customization
@unnumberedsubsec Q3.5.6: How to map @kbd{Help} key alone on Sun type4 keyboard?

The following works in GNU Emacs 19:

@lisp
(global-set-key [help] 'help-command);; Help
@end lisp

The following works in XEmacs with the addition of shift:

@lisp
(global-set-key [(shift help)] 'help-command);; Help
@end lisp

But it doesn't work alone.  This is in the file @file{PROBLEMS} which
should have come with your XEmacs installation: @emph{Emacs ignores the
@kbd{help} key when running OLWM}.

OLWM grabs the @kbd{help} key, and retransmits it to the appropriate
client using
@iftex
@*
@end iftex
@code{XSendEvent}.  Allowing Emacs to react to synthetic
events is a security hole, so this is turned off by default.  You can
enable it by setting the variable @code{x-allow-sendevents} to t.  You
can also cause fix this by telling OLWM to not grab the help key, with
the null binding @code{OpenWindows.KeyboardCommand.Help:}.

@node Q3.5.7, Q3.5.8, Q3.5.6, Customization
@unnumberedsubsec Q3.5.7: How can you type in special characters in XEmacs?
@c Changed
One way is to use the package @code{x-compose}.  Then you can use
sequences like @kbd{Compose " a} to get ä, etc.

Another way is to use the @code{iso-insert} package. Then you can use
sequences like @kbd{C-x 8 " a} to get ä, etc.

@email{glynn@@sensei.co.uk, Glynn Clements} writes:

@quotation
It depends upon your X server.

Generally, the simplest way is to define a key as Multi_key with
xmodmap, e.g.
@c hey, show some respect, willya -- there's xkeycaps, isn't there? --
@c chr ;)
@example
        xmodmap -e 'keycode 0xff20 = Multi_key'
@end example

You will need to pick an appropriate keycode. Use xev to find out the
keycodes for each key.

[NB: On a `Windows' keyboard, recent versions of XFree86 automatically
define the right `Windows' key as Multi_key'.]

Once you have Multi_key defined, you can use e.g.
@example
        Multi a '       => á
        Multi e "       => ë
        Multi c ,       => ç
@end example

etc.

Also, recent versions of XFree86 define various AltGr-<key>
combinations as dead keys, i.e.
@example
        AltGr [         => dead_diaeresis
        AltGr ]         => dead_tilde
        AltGr ;         => dead_acute
@end example
etc.

Running @samp{xmodmap -pk} will list all of the defined keysyms.
@end quotation

For the related problem of @emph{displaying} non-ASCII characters in a
non-Mule XEmacs, @xref{Q3.2.7}.

@node Q3.5.8, Q3.5.9, Q3.5.7, Customization
@unnumberedsubsec Q3.5.8: [This question intentionally left blank]

Obsolete question, left blank to avoid renumbering.

@node Q3.5.9, Q3.5.10, Q3.5.8, Customization
@unnumberedsubsec Q3.5.9: How do I make the Delete key delete forward?

With XEmacs-20.2 use the @code{delbs} package:

@lisp
(require 'delbs)
@end lisp

This will give you the functions @code{delbs-enable-delete-forward} to
set things up, and @code{delbs-disable-delete-forward} to revert to
``normal'' behavior.  Note that @code{delbackspace} package is obsolete.

Starting with XEmacs-20.3 better solution is to set variable
@code{delete-key-deletes-forward} to t.  You can also change this with
Customize. Select from the @code{Options} menu
@code{Advanced (Customize)->Emacs->Editing->Basics->Delete Key Deletes Forward} or
type @kbd{M-x customize @key{RET} editing-basics @key{RET}}.

Also see @ref{Q3.5.4}.

@node Q3.5.10, Q3.5.11, Q3.5.9, Customization
@unnumberedsubsec Q3.5.10: Can I turn on @dfn{sticky} modifier keys?

Yes, with @code{(setq modifier-keys-are-sticky t)}.  This will give the
effect of being able to press and release Shift and have the next
character typed come out in upper case.  This will affect all the other
modifier keys like Control and Meta as well.

@email{ben@@xemacs.org, Ben Wing} writes:

@quotation
One thing about the sticky modifiers is that if you move the mouse out
of the frame and back in, it cancels all currently ``stuck'' modifiers.
@end quotation

@node Q3.5.11, Q3.6.1, Q3.5.10, Customization
@unnumberedsubsec Q3.5.11: How do I map the arrow keys?
@c New
Say you want to map @kbd{C-@key{right}} to forward-word:

@email{sds@@usa.net, Sam Steingold} writes:

@quotation
@lisp
; both XEmacs and Emacs
(define-key global-map [(control right)] 'forward-word)
@end lisp
or
@lisp
; Emacs only
(define-key global-map [C-right] 'forward-word)
@end lisp
or
@lisp
; ver > 20, both
(define-key global-map (kbd "C-<right>") 'forward-word)
@end lisp
@end quotation



@node Q3.6.1, Q3.6.2, Q3.5.11, Customization
@unnumberedsec 3.6: The Cursor
@unnumberedsubsec Q3.6.1: Is there a way to make the bar cursor thicker?

I'd like to have the bar cursor a little thicker, as I tend to "lose" it
often.

For a 1 pixel bar cursor, use:

@lisp
(setq bar-cursor t)
@end lisp

For a 2 pixel bar cursor, use:

@lisp
(setq bar-cursor 'anything-else)
@end lisp

Starting with XEmacs-20.3 you can also change these with Customize.
Select from the @code{Options} menu
@code{Advanced (Customize)->Emacs->Environment->Display->Bar Cursor...} or type
@kbd{M-x customize @key{RET} display @key{RET}}.

You can use a color to make it stand out better:

@example
Emacs*cursorColor:      Red
@end example

@node Q3.6.2, Q3.6.3, Q3.6.1, Customization
@unnumberedsubsec Q3.6.2: Is there a way to get back the block cursor?

@lisp
(setq bar-cursor nil)
@end lisp

Starting with XEmacs 20.3 you can also change this with Customize.
Select from the @code{Options} menu
@code{Advanced (Customize)->Emacs->Environment->Display->Bar Cursor...} or type
@kbd{M-x customize @key{RET} display @key{RET}}.

@node Q3.6.3, Q3.7.1, Q3.6.2, Customization
@unnumberedsubsec Q3.6.3: Can I make the cursor blink?

Yes, like this:

@lisp
(blink-cursor-mode)
@end lisp

This function toggles between a steady cursor and a blinking cursor.
You may also set this mode from the menu bar by selecting @samp{Options
=> Frame Appearance => Blinking Cursor}.  Remember to save options.

@node Q3.7.1, Q3.7.2, Q3.6.3, Customization
@unnumberedsec 3.7: The Mouse and Highlighting
@unnumberedsubsec Q3.7.1: How can I turn off Mouse pasting?

I keep hitting the middle mouse button by accident and getting stuff
pasted into my buffer so how can I turn this off?

Here is an alternative binding, whereby the middle mouse button selects
(but does not cut) the expression under the mouse. Clicking middle on a
left or right paren will select to the matching one.  Note that you can
use @code{define-key} or @code{global-set-key}.

@lisp
(defun mouse-set-point-and-select (event)
  "Sets the point at the mouse location, then marks following form"
  (interactive "@@e")
  (mouse-set-point event)
  (mark-sexp 1))
(define-key global-map [button2] 'mouse-set-point-and-select)
@end lisp

@node Q3.7.2, Q3.7.3, Q3.7.1, Customization
@unnumberedsubsec Q3.7.2: How do I set control/meta/etc modifiers on mouse buttons?

Use, for instance, @code{[(meta button1)]}. For example, here is a common
setting for Common Lisp programmers who use the bundled @code{ilisp}
package, whereby meta-button1 on a function name will find the file where
the function name was defined, and put you at that location in the source
file.

[Inside a function that gets called by the lisp-mode-hook and
ilisp-mode-hook]

@lisp
(local-set-key [(meta button1)] 'edit-definitions-lisp)
@end lisp

@node Q3.7.3, Q3.7.4, Q3.7.2, Customization
@unnumberedsubsec Q3.7.3: Clicking the left button does not do anything in buffer list.

I do @kbd{C-x C-b} to get a list of buffers and the entries get
highlighted when I move the mouse over them but clicking the left mouse
does not do anything.

Use the middle mouse button.

@node Q3.7.4, Q3.7.5, Q3.7.3, Customization
@unnumberedsubsec Q3.7.4: How can I get a list of buffers when I hit mouse button 3?

The following code will replace the default popup on button3:

@lisp
(global-set-key [button3] 'popup-buffer-menu)
@end lisp

@node Q3.7.5, Q3.7.6, Q3.7.4, Customization
@unnumberedsubsec Q3.7.5: Why does cut-and-paste not work between XEmacs and a cmdtool?

We don't know.  It's a bug.  There does seem to be a work-around,
however.  Try running xclipboard first.  It appears to fix the problem
even if you exit it.  (This should be mostly fixed in 19.13, but we
haven't yet verified that).

@node Q3.7.6, Q3.7.7, Q3.7.5, Customization
@unnumberedsubsec Q3.7.6: How I can set XEmacs up so that it pastes where the text cursor is?

By default XEmacs pastes X selections where the mouse pointer is.  How
do I disable this?

Examine the function @code{mouse-yank}, by typing @kbd{C-h f mouse-yank
@key{RET}}.

To get XEmacs to paste at the text cursor, add this your @file{init.el}/@file{.emacs}:

@lisp
(setq mouse-yank-at-point t)
@end lisp

Starting with XEmacs-20.2 you can also change this with Customize.
Select from the @code{Options} menu
@code{Advanced (Customize)->Emacs->Editing->Mouse->Yank At Point...} or type
@kbd{M-x customize @key{RET} mouse @key{RET}}.

@node Q3.7.7, Q3.7.8, Q3.7.6, Customization
@unnumberedsubsec Q3.7.7: How do I select a rectangular region?

Just select the region normally, then use the rectangle commands (e.g.
@code{kill-rectangle} on it.  The region does not highlight as a
rectangle, but the commands work just fine.

To actually sweep out rectangular regions with the mouse you can use
@code{mouse-track-do-rectangle} which is assigned to @kbd{M-button1}.
Then use rectangle commands.

You can also do the following to change default behavior to sweep out
rectangular regions:

@lisp
(setq mouse-track-rectangle-p t)
@end lisp

Starting with XEmacs-20.2 you can also change this with Customize.
Select from the @code{Options} menu
@code{Advanced (Customize)->Emacs->Editing->Mouse->Track Rectangle...} or type
@kbd{M-x customize @key{RET} mouse @key{RET}}.


@example
 mouse-track-do-rectangle: (event)
   -- an interactive compiled Lisp function.
 Like `mouse-track' but selects rectangles instead of regions.
@end example

@node Q3.7.8, Q3.8.1, Q3.7.7, Customization
@unnumberedsubsec Q3.7.8: Why does @kbd{M-w} take so long?

It actually doesn't.  It leaves the region visible for a second so that
you can see what area is being yanked.  If you start working, though, it
will immediately complete its operation.  In other words, it will only
delay for a second if you let it.

@node Q3.8.1, Q3.8.2, Q3.7.8, Customization
@unnumberedsec 3.8: The Menubar and Toolbar
@unnumberedsubsec Q3.8.1: How do I get rid of the menu (or menubar)?

@c If you are running XEmacs 19.13 or earlier, add this command to your
@c @file{init.el}/@file{.emacs}.
@c
@c @lisp
@c (set-menubar nil)
@c @end lisp
@c
@c Starting with XEmacs 19.14 the preferred method is:
@c
@lisp
(set-specifier menubar-visible-p nil)
@end lisp

@node Q3.8.2, Q3.8.3, Q3.8.1, Customization
@unnumberedsubsec Q3.8.2: Can I customize the basic menubar?

For an extensive menubar, add this line to your @file{init.el}/@file{.emacs}:

@lisp
(load "big-menubar")
@end lisp

If you'd like to write your own, this file provides as good a set of
examples as any to start from.  The file is located in edit-utils
package. 

@node Q3.8.3, Q3.8.4, Q3.8.2, Customization
@unnumberedsubsec Q3.8.3: How do I control how many buffers are listed in the menu @code{Buffers List}?

Add the following to your @file{init.el}/@file{.emacs} (suit to fit):

@lisp
(setq buffers-menu-max-size 20)
@end lisp

For no limit, use an argument of @samp{nil}.

Starting with XEmacs-20.3 you can also change this with Customize.
Select from the @code{Options} menu
@code{Advanced (Customize)->Emacs->Environment->Menu->Buffers Menu->Max Size...} or
type @kbd{M-x customize @key{RET} buffers-menu @key{RET}}.

@node Q3.8.4, Q3.8.5, Q3.8.3, Customization
@unnumberedsubsec Q3.8.4: Resources like @code{Emacs*menubar*font} are not working?

I am trying to use a resource like @code{Emacs*menubar*font} to set the
font of the menubar but it's not working.

In Motif, the use of @samp{font} resources is obsoleted in order to
support internationalization.  If you are using the real Motif menubar,
this resource is not recognized at all; you have to say:

@example
Emacs*menubar*fontList: FONT
@end example

If you are using the Lucid menubar, for backward compatibility with
existing user configurations, the @samp{font} resource is recognized.
Since this is not supported by Motif itself, the code is a kludge and
the @samp{font} resource will be recognized only if the @samp{fontList}
resource resource is unset.  This means that the resource

@example
*fontList: FONT
@end example

will override

@example
Emacs*menubar*font: FONT
@end example

even though the latter is more specific.

In non-Motif configurations using @samp{--with-mule} and
@samp{--with-xfs} it @emph{is} necessary to use the @code{fontSet}
resource @emph{instead of} the @code{font} resource.  The backward
compatibility kludge was never implemented for non-Motif builds.
Example:

@example
*fontSet: FONT
@end example

@node Q3.8.5, Q3.9.1, Q3.8.4, Customization
@unnumberedsubsec Q3.8.5: How can I bind a key to a function to toggle the toolbar?

Try something like:

@lisp
(defun my-toggle-toolbar ()
  (interactive)
  (set-specifier default-toolbar-visible-p
                 (not (specifier-instance default-toolbar-visible-p))))
(global-set-key "\C-xT" 'my-toggle-toolbar)
@end lisp

There are redisplay bugs in 19.14 that may make the preceding result in
a messed-up display, especially for frames with multiple windows.  You
may need to resize the frame before XEmacs completely realizes the
toolbar is really gone.

Thanks to @email{martin@@xemacs.org, Martin Buchholz} for the correct
code.

@node Q3.9.1, Q3.9.2, Q3.8.5, Customization
@unnumberedsec 3.9: Scrollbars
@unnumberedsubsec Q3.9.1: How can I disable the scrollbar?

To disable them for all frames, add the following line to
your @file{.Xresources}:

@example
Emacs.scrollBarWidth:  0
@end example

Or select from the @code{Options} menu @code{Frame Appearance->Scrollbars}.
Remember to save options.

To turn the scrollbar off on a per-frame basis, use the following
function:

@lisp
(set-specifier scrollbar-width 0 (selected-frame))
@end lisp

You can actually turn the scrollbars on at any level you want by
substituting for (selected-frame) in the above command.  For example, to
turn the scrollbars off only in a single buffer:

@lisp
(set-specifier scrollbar-width 0 (current-buffer))
@end lisp
@c
@c In XEmacs versions prior to 19.14, you had to use the hairier construct:
@c
@c @lisp
@c (set-specifier scrollbar-width (cons (selected-frame) 0))
@c @end lisp

@node Q3.9.2, Q3.9.3, Q3.9.1, Customization
@unnumberedsubsec Q3.9.2: How can one use resources to change scrollbar colors?

Here's a recap of how to use resources to change your scrollbar colors:

@example
! Motif scrollbars

Emacs*XmScrollBar.Background: skyblue
Emacs*XmScrollBar.troughColor: lightgray

! Athena scrollbars

Emacs*Scrollbar.Foreground: skyblue
Emacs*Scrollbar.Background: lightgray
@end example

Note the capitalization of @code{Scrollbar} for the Athena widget.

@node Q3.9.3, Q3.9.4, Q3.9.2, Customization
@unnumberedsubsec Q3.9.3: Moving the scrollbar can move the point; can I disable this?

When I move the scrollbar in an XEmacs window, it moves the point as
well, which should not be the default behavior.  Is this a bug or a
feature?  Can I disable it?

The current behavior is a feature, not a bug.  Point remains at the same
buffer position as long as that position does not scroll off the screen.
In that event, point will end up in either the upper-left or lower-left
hand corner.

This cannot be changed.

@node Q3.9.4, Q3.10.1, Q3.9.3, Customization
@unnumberedsubsec Q3.9.4: How can I turn off automatic horizontal scrolling in specific modes?

Do @code{(setq truncate-lines t)} in the mode-hooks for any modes
in which you want lines truncated.

More precisely: If @code{truncate-lines} is nil, horizontal scrollbars
will never appear.  Otherwise, they will appear only if the value of
@code{scrollbar-height} for that buffer/window/etc. is non-zero.  If you
do

@lisp
(set-specifier scrollbar-height 0)
@end lisp

then horizontal scrollbars will not appear in truncated buffers unless
the package specifically asked for them.

@node Q3.10.1, Q3.10.2, Q3.9.4, Customization
@unnumberedsec 3.10: Text Selections
@unnumberedsubsec Q3.10.1: How can I turn off or change highlighted selections?

The @code{zmacs} mode allows for what some might call gratuitous
highlighting for selected regions (either by setting mark or by using
the mouse).  This is the default behavior.  To turn off, add the
following line to your @file{init.el}/@file{.emacs} file:

@lisp
(setq zmacs-regions nil)
@end lisp

Starting with XEmacs-20.2 you can also change this with Customize. Select
from the @code{Options} menu @code{Advanced (Customize)->Emacs->Editing->Basics->Zmacs
Regions} or type @kbd{M-x customize @key{RET} editing-basics @key{RET}}.

To change the face for selection, look at @code{Options->Customize} on
the menubar.

@node Q3.10.2, Q3.10.3, Q3.10.1, Customization
@unnumberedsubsec Q3.10.2: How do I get that typing on an active region removes it?

I want to change things so that if I select some text and start typing,
the typed text replaces the selected text, similar to Motif.

You want to use something called @dfn{pending delete}.  Pending delete
is what happens when you select a region (with the mouse or keyboard)
and you press a key to replace the selected region by the key you typed.
Usually backspace kills the selected region.

To get this behavior, add the following lines to your @file{init.el}/@file{.emacs}:

@lisp
(cond
 ((fboundp 'turn-on-pending-delete)
  (turn-on-pending-delete))
 ((fboundp 'pending-delete-on)
  (pending-delete-on t)))
@end lisp

Note that this will work with both Backspace and Delete.  This code is a
tad more complicated than it has to be for XEmacs in order to make it
more portable.

@node Q3.10.3, Q3.10.4, Q3.10.2, Customization
@unnumberedsubsec Q3.10.3: Can I turn off the highlight during isearch?

I do not like my text highlighted while I am doing isearch as I am not
able to see what's underneath.  How do I turn it off?

Put the following in your @file{init.el}/@file{.emacs}:

@lisp
(setq isearch-highlight nil)
@end lisp

Starting with XEmacs-20.2 you can also change this with Customize. Type
@kbd{M-x customize-variable @key{RET} isearch-highlight @key{RET}}.

Note also that isearch-highlight affects query-replace and ispell.
Instead of disabling isearch-highlight you may find that a better
solution consists of customizing the @code{isearch} face.

@node Q3.10.4, Q3.10.5, Q3.10.3, Customization
@unnumberedsubsec Q3.10.4: How do I turn off highlighting after @kbd{C-x C-p} (mark-page)?

Put this in your @code{.emacs}:

@lisp
(setq zmacs-regions nil)
@end lisp

@strong{Warning: This command turns off all region highlighting.}

Also see @ref{Q3.10.1}.

@node Q3.10.5, Q3.10.6, Q3.10.4, Customization
@unnumberedsubsec Q3.10.5: The region disappears when I hit the end of buffer while scrolling.

This has been fixed by default starting with XEmacs-20.3.

With older versions you can turn this feature (if it indeed is a feature)
off like this:

@lisp
(defadvice scroll-up (around scroll-up freeze)
  (interactive "_P")
  (let ((zmacs-region-stays t))
    (if (interactive-p)
        (condition-case nil
            ad-do-it
          (end-of-buffer (goto-char (point-max))))
      ad-do-it)))

(defadvice scroll-down (around scroll-down freeze)
  (interactive "_P")
  (let ((zmacs-region-stays t))
    (if (interactive-p)
        (condition-case nil
            ad-do-it
          (beginning-of-buffer (goto-char (point-min))))
      ad-do-it)))
@end lisp

Thanks to @email{raman@@adobe.com, T. V. Raman} for assistance in deriving this
answer.

@node Q3.10.6,  , Q3.10.5, Customization
@unnumberedsubsec Q3.10.6: Why is killing so slow?

This actually is an X Windows question, although you'll notice it with
keyboard operations as well as while using the GUI.  Basically, there
are four ways to communicate interprogram via the X server:

@table @strong
@item Primary selection
a transient selection that gets replaced every time a new selection is made

@item Secondary selection
for "exchanging" with the primary selection

@item Cut buffers
a clipboard internal to the X server (deprecated)

@item Clipboard selection
a selection with a notification protocol that allows a separate app to
manage the clipboard
@end table

The cut buffers are deprecated because managing them is even more
inefficient than the clipboard notification protocol.  The primary
selection works fine for many users and applications, but is not very
robust under intensive or sophisticated use.

In Motif and MS Windows, a clipboard has become the primary means for
managing cut and paste.  These means that "modern" applications tend to
be oriented toward a true clipboard, rather than the primary selection.
(On Windows, there is nothing equivalent to the primary selection.)
It's not that XEmacs doesn't support the simple primary selection
method, it's that more and more other applications don't.

So the slowdown occurs because XEmacs now engages in the clipboard
notification protocol on @emph{every} kill.  This is especially slow on
Motif.

With most people running most clients and server on the same host, and
many of the rest working over very fast communication, you may expect
that the situation is not going to improve.

There are a number of workarounds.  The most effective is to use a
special command to do selection ownership only when you intend to paste
to another application.  Useful commands are @code{kill-primary-selection}
and @code{copy-primary-selection}.  These work only on text selected
with the mouse (probably; experiment), and are bound by default to the
@kbd{Cut} and @kbd{Copy}, respectively, buttons on the toolbar.
@code{copy-primary-selection} is also bound to @kbd{C-Insert}.  You can
yank the clipboard contents with @code{yank-primary-selection}, bound to
the @kbd{Paste} toolbar button and @kbd{Sh-Insert}.

If you are communicating by cut and paste with applications that use the
primary selection, then you can customize
@code{interprogram-cut-function} to @code{nil}, restoring the XEmacs
version 20 behavior.  How can you tell if a program will support this?
Motifly-correct programs require the clipboard; you lose.  For others,
only by trying it.  You also need to customize the complementary
@code{interprogram-paste-function} to @code{nil}.  (Otherwise
XEmacs-to-XEmacs pastes will not work correctly.)

You may get some relief on Motif by setting
@code{x-selection-strict-motif-ownership} to nil, but this means you will
only intermittently be able to paste XEmacs kills to Motif applications.

Thanks to Jeff Mincy and Glynn Clements for corrections.

@node Subsystems, Miscellaneous, Customization, Top
@unnumbered 4 Major Subsystems

This is part 4 of the XEmacs Frequently Asked Questions list.  This
section is devoted to major XEmacs subsystems.

@menu
Reading Mail with VM:
* Q4.0.1::      How do I set up VM to retrieve remote mail using POP?
* Q4.0.2::      How do I get VM to filter mail for me?
* Q4.0.3::      How can I get VM to automatically check for new mail?
* Q4.0.4::      [This question intentionally left blank]
* Q4.0.5::      How do I get my outgoing mail archived?
* Q4.0.6::      I have various addresses at which I receive mail.  How can I tell VM to ignore them when doing a "reply-all"?
* Q4.0.7::      Is there a mailing list or FAQ for VM?
* Q4.0.8::      Remote mail reading with VM.
* Q4.0.9::      rmail or VM gets an error incorporating new mail.
* Q4.0.10::     How do I make VM stay in a single frame?
* Q4.0.11::     How do I make VM or mh-e display graphical smilies?
* Q4.0.12::     Customization of VM not covered in the manual or here.

Web browsing with W3:
* Q4.1.1::      What is W3?
* Q4.1.2::      How do I run W3 from behind a firewall?
* Q4.1.3::      Is it true that W3 supports style sheets and tables?

Reading Netnews and Mail with Gnus:
* Q4.2.1::      GNUS, (ding) Gnus, Gnus 5, September Gnus, Red Gnus,argh!
* Q4.2.2::      [This question intentionally left blank]
* Q4.2.3::      How do I make Gnus stay within a single frame?
* Q4.2.4::      How do I customize the From: line?

Other Mail & News:
* Q4.3.1::      How can I read and/or compose MIME messages?
* Q4.3.2::      What is TM and where do I get it?
* Q4.3.3::      Why isn't this @code{movemail} program working?
* Q4.3.4::      Movemail is also distributed by Netscape?  Can that cause problems?
* Q4.3.5::      Where do I find pstogif (required by tm)?

Sparcworks, EOS, and WorkShop:
* Q4.4.1::      What is SPARCworks, EOS, and WorkShop
* Q4.4.2::      How do I start the Sun Workshop support in XEmacs 21?

Energize:
* Q4.5.1::      What is/was Energize?

Infodock:
* Q4.6.1::      What is Infodock?

Other Unbundled Packages:
* Q4.7.1::      What is AUC TeX?  Where do you get it?
* Q4.7.2::      Are there any Emacs Lisp Spreadsheets?
* Q4.7.3::      [This question intentionally left blank]
* Q4.7.4::      Problems installing AUC TeX
* Q4.7.5::      Is there a reason for an Emacs package not to be included in XEmacs?
* Q4.7.6::      Is there a MatLab mode?
* Q4.7.7::      Can I edit files on other hosts?
@end menu

@node Q4.0.1, Q4.0.2, Subsystems, Subsystems
@unnumberedsec 4.0: Reading Mail with VM
@unnumberedsubsec Q4.0.1: How do I set up VM to retrieve mail from a remote site using POP?

Use @code{vm-spool-files}, like this for example:

@lisp
(setq vm-spool-files '("/var/spool/mail/wing"
                       "netcom23.netcom.com:110:pass:wing:MYPASS"))
@end lisp

Of course substitute your actual password for MYPASS.

@node Q4.0.2, Q4.0.3, Q4.0.1, Subsystems
@unnumberedsubsec Q4.0.2: How do I get VM to filter mail for me?

One possibility is to use procmail to split your mail before it gets to
VM.  I prefer this personally, since there are many strange and
wonderful things one can do with procmail.  Procmail may be found at
@uref{ftp://ftp.informatik.rwth-aachen.de/pub/packages/procmail/}.

Also see the Mail Filtering FAQ at:
@iftex
@*
@end iftex
@uref{ftp://rtfm.mit.edu/pub/usenet/news.answers/mail/filtering-faq}.
@c Link above,
@c <URL:http://www.cis.ohio-state.edu/hypertext/faq/usenet/mail/filtering-faq/faq.html>
@c was dead.

@node Q4.0.3, Q4.0.4, Q4.0.2, Subsystems
@unnumberedsubsec Q4.0.3: How can I get VM to automatically check for new mail?

@email{turner@@lanl.gov, John Turner} writes:

@quotation
Use the following:

@lisp
(setq vm-auto-get-new-mail 60)
@end lisp
@end quotation

@node Q4.0.4, Q4.0.5, Q4.0.3, Subsystems
@unnumberedsubsec Q4.0.4: [This question intentionally left blank]

Obsolete question, left blank to avoid renumbering.

@node Q4.0.5, Q4.0.6, Q4.0.4, Subsystems
@unnumberedsubsec Q4.0.5: How do I get my outgoing mail archived?

@lisp
(setq mail-archive-file-name "~/outbox")
@end lisp

@node Q4.0.6, Q4.0.7, Q4.0.5, Subsystems
@unnumberedsubsec Q4.0.6: I have various addresses at which I receive mail.  How can I tell VM to ignore them when doing a "reply-all"?

Set @code{vm-reply-ignored-addresses} to a list, like

@lisp
(setq vm-reply-ignored-addresses
      '("wing@@nuspl@@nvwls.cc.purdue.edu,netcom[0-9]*.netcom.com"
        "wing@@netcom.com" "wing@@xemacs.org"))
@end lisp

Note that each string is a regular expression.

@node Q4.0.7, Q4.0.8, Q4.0.6, Subsystems
@unnumberedsubsec Q4.0.7: Is there a mailing list or FAQ for VM?

A FAQ for VM exists at @uref{http://www.wonderworks.com/vm/FAQ.html}.

VM has its own newsgroups gnu.emacs.vm.info and gnu.emacs.vm.bug.

@node Q4.0.8, Q4.0.9, Q4.0.7,  Subsystems
@unnumberedsubsec Q4.0.8: Remote mail reading with VM.

My mailbox lives at the office on a big honkin server.  My regular INBOX
lives on my honkin desktop machine.  I now can PPP to the office from
home which is far from honking...  I'd like to be able to read mail at
home without storing it here and I'd like to use xemacs and VM at
home...  Is there a recommended setup?

@email{nuspl@@nvwls.cc.purdue.edu, Joseph J. Nuspl Jr.} writes:

@quotation
There are several ways to do this.

@enumerate
@item
Set your display to your home machine and run dxpc or one of the other X
compressors.

@item
NFS mount your desktop machine on your home machine and modify your pop
command on your home machine to rsh to your desktop machine and actually
do the pop get's.

@item
Run a POP server on your desktop machine as well and do a sort of two
tiered POP get.
@end enumerate
@end quotation

        @email{wmperry@@monolith.spry.com, William Perry} adds:

@quotation
Or you could run a pop script periodically on your desktop machine, and
just use ange-ftp or NFS to get to your mailbox.  I used to do this all
the time back at IU.
@end quotation

@node Q4.0.9, Q4.0.10, Q4.0.8, Subsystems
@unnumberedsubsec Q4.0.9: rmail or VM gets an error incorporating new mail.

Quoting the XEmacs PROBLEMS file:

@quotation
rmail and VM get new mail from @file{/usr/spool/mail/$USER} using a
program called @code{movemail}.  This program interlocks with
@code{/bin/mail} using the protocol defined by @code{/bin/mail}.

There are two different protocols in general use.  One of them uses the
@code{flock} system call.  The other involves creating a lock file;
@code{movemail} must be able to write in @file{/usr/spool/mail} in order
to do this.  You control which one is used by defining, or not defining,
the macro @code{MAIL_USE_FLOCK} in @file{config.h} or the m- or s- file
it includes.

@strong{IF YOU DON'T USE THE FORM OF INTERLOCKING THAT IS NORMAL ON YOUR
SYSTEM, YOU CAN LOSE MAIL!}

If your system uses the lock file protocol, and fascist restrictions
prevent ordinary users from writing the lock files in
@file{/usr/spool/mail}, you may need to make @code{movemail} setgid to a
suitable group such as @samp{mail}.  You can use these commands (as
root):

@example
chgrp mail movemail
chmod 2755 movemail
@end example

If your system uses the lock file protocol, and fascist restrictions
prevent ordinary users from writing the lock files in
@file{/usr/spool/mail}, you may need to make @code{movemail} setgid to a
suitable group such as @code{mail}.  To do this, use the following
commands (as root) after doing the make install.

@example
chgrp mail movemail
chmod 2755 movemail
@end example

Installation normally copies movemail from the build directory to an
installation directory which is usually under @file{/usr/local/lib}.
The installed copy of @code{movemail} is usually in the directory
@file{/usr/local/lib/emacs/VERSION/TARGET}.  You must change the group
and mode of the installed copy; changing the group and mode of the build
directory copy is ineffective.
@end quotation

@node Q4.0.10, Q4.0.11, Q4.0.9, Subsystems
@unnumberedsubsec Q4.0.10: How do I make VM stay in a single frame?

John.@email{Cooper@@Eng.Sun.COM, John S Cooper} writes:

@quotation
@lisp
                                        ; Don't use multiple frames
(setq vm-frame-per-composition nil)
(setq vm-frame-per-folder nil)
(setq vm-frame-per-edit nil)
(setq vm-frame-per-summary nil)
@end lisp
@end quotation

@node Q4.0.11, Q4.0.12, Q4.0.10, Subsystems
@unnumberedsubsec Q4.0.11: How do I make VM or mh-e display graphical smilies?
@c Changed June
For mh-e use the following:

@lisp
(add-hook 'mh-show-mode-hook '(lambda ()
                                (smiley-region (point-min)
                                               (point-max))))
@end lisp

@email{bill@@carpenter.ORG, WJCarpenter} writes:
For VM use the following:
@lisp
       (autoload 'smiley-region "smiley" nil t)
       (add-hook 'vm-select-message-hook
                 '(lambda ()
                    (smiley-region (point-min)
                                   (point-max))))
@end lisp

For tm use the following:
@lisp
(autoload 'smiley-buffer "smiley" nil t)
(add-hook 'mime-viewer/plain-text-preview-hook 'smiley-buffer)
@end lisp

@node Q4.0.12, Q4.1.1, Q4.0.11, Subsystems
@unnumberedsubsec Q4.0.12: Customization of VM not covered in the manual, or here.

@email{boffi@@hp735.stru.polimi.it, giacomo boffi} writes:

@quotation
The meta-answer is to look into the file @file{vm-vars.el}, in the vm
directory of the lisp library.

@file{vm-vars.el} contains, initializes and carefully describes, with
examples of usage, the plethora of user options that @emph{fully}
control VM's behavior.

Enter vm-vars, @code{forward-search} for toolbar, find the variables
that control the toolbar placement, appearance, existence, copy to your
@file{init.el}/@file{.emacs} or @file{.vm} and modify according to the
detailed instructions.

The above also applies to all the various features of VM: search for
some keywords, maybe the first you conjure isn't appropriate, find the
appropriate variables, copy and experiment.
@end quotation

@node Q4.1.1, Q4.1.2, Q4.0.12, Subsystems
@unnumberedsec 4.1: Web browsing with W3
@unnumberedsubsec Q4.1.1: What is W3?

W3 is an advanced graphical browser written in Emacs lisp that runs on
XEmacs.  It has full support for cascaded style sheets, and more...

It has a home web page at
@uref{http://www.cs.indiana.edu/elisp/w3/docs.html}.

@node Q4.1.2, Q4.1.3, Q4.1.1, Subsystems
@unnumberedsubsec Q4.1.2: How do I run W3 from behind a firewall?

There is a long, well-written, detailed section in the W3 manual that
describes how to do this.  Look in the section entitled "Firewalls".

@node Q4.1.3, Q4.2.1, Q4.1.2, Subsystems
@unnumberedsubsec Q4.1.3: Is it true that W3 supports style sheets and tables?

Yes, and much more.  W3, as distributed with the latest XEmacs is a
full-featured web browser.

@node Q4.2.1, Q4.2.2, Q4.1.3, Subsystems
@unnumberedsec 4.2: Reading Netnews and Mail with Gnus
@unnumberedsubsec Q4.2.1: GNUS, (ding) Gnus, Gnus 5, September Gnus, Red Gnus, Quassia Gnus, argh!

The Gnus numbering issues are not meant for mere mortals to know them.
If you feel you @emph{must} enter the muddy waters of Gnus, visit the
excellent FAQ, maintained by Justin Sheehy, at:

@example
@uref{http://www.ccs.neu.edu/software/contrib/gnus/}
@end example

See also Gnus home page
@example
@uref{http://www.gnus.org/}
@end example

@node Q4.2.2, Q4.2.3, Q4.2.1, Subsystems
@unnumberedsubsec Q4.2.2: This question intentionally left blank.

Obsolete question, left blank to avoid renumbering.

@node Q4.2.3, Q4.2.4, Q4.2.2, Subsystems
@unnumberedsubsec Q4.2.3: How do I make Gnus stay within a single frame?

The toolbar code to start Gnus opens the new frame---and it's a feature
rather than a bug.  If you don't like it, but would still like to click
on the seemly icon, use the following code:

@lisp
(defun toolbar-news ()
  (gnus))
@end lisp

It will redefine the callback function of the icon to just call
@code{gnus}, without all the fancy frame stuff.

@node Q4.2.4, Q4.3.1, Q4.2.3, Subsystems
@unnumberedsubsec Q4.2.4: How do I customize the From: line?

How do I change the @code{From:} line?  I have set gnus-user-from-line
to
@example
Gail Gurman <gail.gurman@@sybase.com>
@end example
@noindent , but XEmacs Gnus doesn't use
it. Instead it uses
@example
Gail Mara Gurman @email{gailg@@deall}
@end example
@noindent and then complains
that it's incorrect. Also, as you perhaps can see, my Message-ID is
screwy. How can I change that?

@email{larsi@@ifi.uio.no, Lars Magne Ingebrigtsen} writes:

@quotation
Set @code{user-mail-address} to @samp{gail.gurman@@sybase.com} or
@code{mail-host-address} to @samp{sybase.com}.
@end quotation

@node Q4.3.1, Q4.3.2, Q4.2.4, Subsystems
@unnumberedsec 4.3: Other Mail & News
@unnumberedsubsec Q4.3.1: How can I read and/or compose MIME messages?
@c Changed June

VM supports MIME natively.

You probably want to use the Tools for MIME (tm).  @xref{Q4.3.2}, for
details.

@email{trey@@cs.berkeley.edu, Trey Jackson} has an Emacs & MIME web page at
@iftex
@*
@end iftex
@uref{http://bmrc.berkeley.edu/~trey/emacs/mime.html}.


Another possibility is RMIME.  You may find RMIME at
@iftex
@*
@end iftex
@uref{http://www.cinti.net/~rmoody/rmime/index.html}.


@node Q4.3.2, Q4.3.3, Q4.3.1, Subsystems
@unnumberedsubsec Q4.3.2: What is TM and where do I get it?

TM stands for @dfn{Tools for MIME} and not Tiny MIME.  TM integrates
with all major XEmacs packages like Gnus (all flavors), VM, MH-E, and
mailcrypt.  It provides totally transparent and trouble-free MIME
support.  When appropriate a message will be decoded in place in an
XEmacs buffer.

TM now comes as a package with XEmacs 19.16 and XEmacs 20.2.

TM was written by @email{morioka@@jaist.ac.jp, MORIOKA Tomohiko} and
@email{shuhei-k@@jaist.ac.jp, KOBAYASHI
Shuhei}.

It is based on the work of @email{umerin@@mse.kyutech.ac.jp, UMEDA
Masanobu}, the original writer of GNUS.

The following information is from the @file{README}:

@dfn{tm} is a MIME package for GNU Emacs.
tm has following functions:

@itemize @bullet
@item MIME style multilingual header.
@item MIME message viewer (mime/viewer-mode).
@item MIME message composer (mime/editor-mode).
@item MIME extenders for mh-e, GNUS, RMAIL and VM.
@end itemize

tm is available from following anonymous ftp sites:
@itemize @bullet
@comment @item @uref{ftp://ftp.jaist.ac.jp/pub/GNU/elisp/mime/} (Japan).
@comment @item @uref{ftp://ftp.nis.co.jp/pub/gnu/emacs-lisp/tm/} (Japan).
@comment @c The host above is unknown.
@comment @item @uref{ftp://ftp.nisiq.net/pub/gnu/emacs-lisp/tm/} (US).
@comment @item @uref{ftp://ftp.miranova.com/pub/gnus/jaist.ac.jp/} (US).
@item @uref{ftp://ftp.unicamp.br/pub/mail/mime/tm/} (Brasil).
@item @uref{ftp://ftp.th-darmstadt.de/pub/editors/GNU-Emacs/lisp/mime/} (Germany).
@item @uref{ftp://ftp.tnt.uni-hannover.de/pub/editors/xemacs/contrib/} (Germany).
@end itemize

Don't let the installation procedure & instructions stop you from trying
this package out---it's much simpler than it looks, and once installed,
trivial to use.

@email{youngs@@xemacs.org, Steve Youngs} writes:

@quotation
All the major Emacs Lisp based MUAs (Gnus, MH-E, and VM) all do their
own thing when it comes to MIME so you won't need TM to get MIME support
in these packages.
@end quotation

@node Q4.3.3, Q4.3.4, Q4.3.2, Subsystems
@unnumberedsubsec Q4.3.3: Why isn't this @code{movemail} program working?

Ben Wing @email{ben@@xemacs.org} writes:

@quotation
It wasn't chown'ed/chmod'd correctly.
@end quotation

@node Q4.3.4, Q4.3.5, Q4.3.3, Subsystems
@unnumberedsubsec Q4.3.4: Movemail is also distributed by Netscape?  Can that cause problems?

@email{steve@@xemacs.org, Steve Baur} writes:

@quotation
Yes.  Always use the movemail installed with your XEmacs.  Failure to do
so can result in lost mail.
@end quotation

Please refer to @email{jwz@@jwz.org, Jamie Zawinski's} notes at
@iftex
@*
@end iftex
@uref{http://home.netscape.com/eng/mozilla/2.0/relnotes/demo/movemail.html}.
In particular, this document will show you how to make Netscape use the
version of movemail configured for your system by the person who built
XEmacs.

@node Q4.3.5, Q4.4.1, Q4.3.4, Subsystems
@unnumberedsubsec Q4.3.5: Where do I find pstogif (required by tm)?

pstogif is part of the latex2html package.

@email{vroonhof@@math.ethz.ch, Jan Vroonhof} writes:

latex2html is best found at the CTAN hosts and their mirrors
in
@iftex
@*
@end iftex
@file{tex-archive/support/latex2html}.

CTAN hosts are:

@itemize @bullet
@item @uref{ftp://ftp.tex.ac.uk/tex-archive/support/latex2html/}.
@item @uref{ftp://ftp.dante.de/tex-archive/support/latex2html/}.
@end itemize

There is a good mirror at ftp.cdrom.com;
@iftex
@*
@end iftex
@uref{ftp://ftp.cdrom.com/pub/tex/ctan/support/latex2html/}.

@node Q4.4.1, Q4.4.2, Q4.3.5, Subsystems
@unnumberedsec 4.4: Sparcworks, EOS, and WorkShop
@unnumberedsubsec Q4.4.1: What is SPARCworks, EOS, and WorkShop?

@email{turner@@lanl.gov, John Turner} writes:

@quotation
SPARCworks is SunSoft's development environment, comprising compilers
(C, C++, FORTRAN 77, Fortran 90, Ada, and Pascal), a debugger, and other
tools such as TeamWare (for configuration management), MakeTool, etc.
@end quotation

See @uref{http://www.sun.com/software/Developer-products/}
for more info.

EOS stands for "Era on SPARCworks", but I don't know what Era stands
for.

EOS is the integration of XEmacs with the SPARCworks debugger.  It
allows one to use an XEmacs frame to view code (complete with
fontification, etc.), set breakpoints, print variables, etc., while
using the SPARCworks debugger.  It works very well and I use it all the
time.

@email{cthomp@@xemacs.org, Chuck Thompson} writes:

@quotation
Era stood for "Emacs Rewritten Again".  It was what we were calling the
modified version of Lucid Emacs for Sun when I was dragged, er, allowed
to work on this wonderful editor.
@end quotation

@email{martin@@xemacs.org, Martin Buchholz} writes:

@quotation
EOS is being replaced with a new graphical development environment
called Sun WorkShop, which is currently (07/96) in Alpha Test.  For more
details, check out
@iftex
@*
@end iftex
@uref{http://www.sun.com/software/Products/Developer-products}.
@end quotation

@node Q4.4.2, Q4.5.1, Q4.4.1, Subsystems
@unnumberedsubsec Q4.4.2: How do I start the Sun Workshop support in XEmacs 21?

Add the switch ---with-workshop to the configure command when building
XEmacs and put the following in one of your startup files
(e.g. site-start.el or .emacs):

@lisp
(when (featurep 'tooltalk)
  (load "tooltalk-macros")
  (load "tooltalk-util")
  (load "tooltalk-init"))
(when (featurep 'sparcworks)
  (load "sunpro-init")
  (load "ring")
  (load "comint")
  (load "annotations")
  (sunpro-startup))
@end lisp

If you are not using the latest Workshop (5.0) you have to apply the
following patch:

@format
--- /opt/SUNWspro/lib/eserve.el.ORIG    Fri May 14 15:23:26 1999
+++ /opt/SUNWspro/lib/eserve.el Fri May 14 15:24:54 1999
@@@@ -42,7 +42,7 @@@@
 (defvar running-xemacs nil "t if we're running XEmacs")
 (defvar running-emacs  nil "t if we're running GNU Emacs 19")

-(if (string-match "^\\(19\\|20\\)\..*\\(XEmacs\\|Lucid\\)" emacs-version)
+(if (string-match "\\(XEmacs\\|Lucid\\)" emacs-version)
     (setq running-xemacs t)
     (setq running-emacs  t))
@end format



@node Q4.5.1, Q4.6.1, Q4.4.2, Subsystems
@unnumberedsec 4.5: Energize
@unnumberedsubsec Q4.5.1: What is/was Energize?

@email{gray@@meteor.harlequin.com, David N Gray} writes:
@quotation
The files in @file{lisp/energize} are to enable Emacs to interface with
the "Energize Programming System", a C and C++ development environment,
which was a product of Lucid, Inc.  Tragically, Lucid went out of
business in 1994, so although Energize is still a great system, if you
don't already have it, there isn't any way to get it now.  (Unless you
happen to be in Japan; INS Engineering may still be selling it there.
Tartan bought the rights to sell it in the rest of the world, but never
did so.)
@end quotation

@node Q4.6.1, Q4.7.1, Q4.5.1, Subsystems
@unnumberedsec 4.6: Infodock
@unnumberedsubsec Q4.6.1: What is Infodock?

@uref{http://sourceforge.net/projects/infodock/, InfoDock} is an
integrated productivity toolset, mainly aimed at technical people,
hosted at SourceForge.

InfoDock is built atop the XEmacs variant of GNU Emacs and so has all of
the power of Emacs, but with an easier to use and more comprehensive
menu-based user interface.  The bottom portion of this text describes
how it differs from XEmacs and GNU Emacs from the Free Software
Foundation.

InfoDock is aimed at people who want a free, turn-key productivity
environment.  Although InfoDock is customizable, it is not intended for
people who like basic versions of Emacs which need to be customized
extensively for local use; standard Emacs distributions are better for
such uses.  InfoDock is for those people who want a complete,
pre-customized environment in one package, which they need not touch
more than once or twice a year to update to new revisions.

InfoDock is pre-built for SPARC SunOS/Solaris systems, PA-RISC HP-UX,
and Intel Linux systems.  It is intended for use on a color display,
although most features will work on monochrome monitors.  Simply unpack
InfoDock according to the instructions in the ID-INSTALL file and you
are ready to run.

The InfoDock Manual is concise, yet sufficient as a user guide for users
who have never used an Emacs-type editor before.  For users who are
already familiar with Emacs, it supplements the information in the GNU
Emacs Manual.

InfoDock menus are much more extensive and more mature than standard
Emacs menus.  Each menu offers a @samp{Manual} item which displays
documentation associated with the menu's functions.

@noindent
Four types of menubars are provided:
@enumerate
@item
An extensive menubar providing access to global InfoDock commands.
@item
Mode-specific menubars tailored to the current major mode.
@item
A simple menubar for basic editing to help novices get started with InfoDock.
@item
The standard XEmacs menubar.
@end enumerate

Most modes also include mode-specific popup menus.  Additionally, region and
rectangle popup menus are included.

@samp{Hyperbole}, the everyday information manager, is a core part of
InfoDock.  This provides context-sensitive mouse keys, a rolodex-type
contact manager, programmable hypertext buttons, and an autonumbered
outliner with embedded hyperlink anchors.

The @samp{OO-Browser}, a multi-language object-oriented code browser, is a
standard part of InfoDock.

InfoDock saves a more extensive set of user options than other Emacs
versions.

InfoDock inserts a useful file header in many file types, showing the
author, summary, and last modification time of each file.  A summary
program can then be used to summarize all of the files in a directory,
for easy MANIFEST file creation.

Your working set of buffers is automatically saved and restored (if you
answer yes to a prompt) between InfoDock sessions.

Refined color choices for code highlighting are provided for both dark and
light background display frames.

The @kbd{C-z} key prefix performs frame-based commands which parallel the
@kbd{C-x} key prefix for window-based commands.

The Smart Menu system is included for producing command menus on dumb
terminals.

Lisp libraries are better categorized according to function.

Extensions and improvements to many areas of Emacs are included, such as:
paragraph filling, mail reading with Rmail, shell handling, outlining, code
highlighting and browsing, and man page browsing.

InfoDock questions, answers and discussion should go to the mail list
@iftex
@*
@end iftex
@email{infodock@@infodock.com}.  Use
@email{infodock-request@@infodock.com} to be added or removed from the
list.  Always include your InfoDock version number when sending help
requests.

InfoDock is available across the Internet via anonymous FTP.  To get
it, first move to a directory into which you want the InfoDock archive
files placed.  We will call this <DIST-DIR>.

@example
   cd <DIST-DIR>
@end example

Ftp to ftp.xemacs.org  (Internet Host ID = 128.174.252.16):

@example
   prompt> ftp ftp.xemacs.org
@end example

Login as @samp{anonymous} with your own <user-id>@@<site-name> as a password.

@example
   Name (ftp.xemacs.org): anonymous
   331 Guest login ok, send your complete e-mail address as password.
   Password: -<your-user-id>@@<your-domain>
   230 Guest login ok, access restrictions apply.
@end example

Move to the location of the InfoDock archives:

@example
   ftp> cd pub/infodock
@end example

Set your transfer mode to binary:

@example
   ftp> bin
   200 Type set to I.
@end example

Turn off prompting:

@example
   ftp> prompt
   Interactive mode off.
@end example

Retrieve the InfoDock archives that you want, either by using a
@samp{get <file>} for each file you want or by using the following to
get a complete distribution, including all binaries:

@example
   ftp> mget ID-INSTALL
   ftp> mget id-*
@end example

Close the FTP connection:

@example
   ftp> quit
   221 Goodbye.
@end example

Read the @file{ID-INSTALL} file which you just retrieved for
step-by-step installation instructions.

@node Q4.7.1, Q4.7.2, Q4.6.1, Subsystems
@unnumberedsec 4.7: Other Unbundled Packages
@unnumberedsubsec Q4.7.1: What is AUC TeX?  Where do you get it?

AUC TeX is a package written by @email{abraham@@dina.kvl.dk, Per Abrahamsen}.
Starting with XEmacs 19.16, AUC TeX is bundled with XEmacs.  The
following information is from the @file{README} and website.

AUC TeX is an extensible package that supports writing and formatting
TeX files for most variants of GNU Emacs. Many different macro packages
are supported, including AMS TeX, LaTeX, and TeXinfo.

The most recent version is always available by ftp at
@iftex
@*
@end iftex
@uref{ftp://sunsite.dk/packages/auctex/auctex.tar.gz}.

In case you don't have access to anonymous ftp, you can get it by an
email request to @email{ftpmail@@decwrl.dec.com}.

WWW users may want to check out the AUC TeX page at
@iftex
@*
@end iftex
@uref{http://sunsite.dk/auctex/}.

@node Q4.7.2, Q4.7.3, Q4.7.1, Subsystems
@unnumberedsubsec Q4.7.2: Are there any Emacs Lisp Spreadsheets?

Yes.  Check out @dfn{dismal} (which stands for Dis' Mode Ain't Lotus) at
@iftex
@*
@end iftex
@uref{ftp://cs.nyu.edu/pub/local/fox/dismal/}.

@node Q4.7.3, Q4.7.4, Q4.7.2, Subsystems
@unnumberedsubsec Q4.7.3: [This question intentionally left blank]

@node Q4.7.4, Q4.7.5, Q4.7.3, Subsystems
@unnumberedsubsec Q4.7.4: Problems installing AUC TeX.

@email{vroonhof@@math.ethz.ch, Jan Vroonhof} writes:

@quotation
AUC TeX works fine on both stock Emacs and XEmacs has been doing so for
a very very long time. This is mostly due to the work of
@email{abraham@@dina.kvl.dk, Per Abrahamsen} (clap clap) in particular his @file{easymenu}
package.  Which leads to what is probably the problem...
@end quotation

Most problems with AUC TeX are one of two things:

@itemize @bullet
@item
The TeX-lisp-directory in @file{tex-site.el} and the makefile don't
match.

Fix: make sure you configure AUC TeX properly @strong{before} installing.

@item
You have an old version of easymenu.el in your path.

Fix: use @code{locate-library} and remove old versions to make sure it
@strong{only} finds the one that came with XEmacs.
@end itemize


@node Q4.7.5, Q4.7.6, Q4.7.4, Subsystems
@unnumberedsubsec Q4.7.5: Is there a reason for an Emacs package not to be included in XEmacs?

The reason for an Emacs package not to be included in XEmacs is
usually one or more of the following:

@enumerate
@item
The package has not been ported to XEmacs.  This will typically happen
when it uses GNU-Emacs-specific features, which make it fail under
XEmacs.

Porting a package to XEmacs can range from a trivial amount of change to
a partial or full rewrite.  Fortunately, the authors of modern packages
usually choose to support both Emacsen themselves.

@item
The package has been decided not to be appropriate for XEmacs.  It may
have an equivalent or better replacement within XEmacs, in which case
the developers may choose not to burden themselves with supporting an
additional package.

Each package bundled with XEmacs means more work for the maintainers,
whether they want it or not.  If you are ready to take over the
maintenance responsibilities for the package you port, be sure to say
so---we will more likely include it.

@item
The package simply hasn't been noted by the XEmacs development.  If
that's the case, the messages like yours are very useful for attracting
our attention.

@item
The package was noted by the developers, but they simply haven't yet
gotten around to including/porting it.  Wait for the next release or,
even better, offer your help.  It will be gladly accepted and
appreciated.
@end enumerate

@node Q4.7.6,  Q4.7.7, Q4.7.5, Subsystems
@unnumberedsubsec Q4.7.5: Is there a MatLab mode?

Yes, a matlab mode and other items are available at the
@uref{ftp://ftp.mathworks.com/pub/contrib/emacs_add_ons,
MathWorks' emacs_add_ons ftp directory}.

@node Q4.7.7,  , Q4.7.6, Subsystems
@unnumberedsubsec Q4.7.7: Can I edit files on other hosts?

Yes.  Of course XEmacs can use any network file system (such as NFS or
Windows file sharing) you have available, and includes some
optimizations and safety features appropriate to those environments.

It is also possible to transparently edit files via FTP, ssh, or rsh.  That
is, XEmacs makes a local copy using the transport in the background, and
automatically refreshes the remote original from that copy when you save
it.  XEmacs also is capable of doing file system manipulations like
creating and removing directories and files.  The FTP interface is
provided by the standard @samp{efs} package @ref{Top, EFS, , efs}.  The
ssh/rsh interface is provided by the optional @samp{tramp} package
@ref{Top, TRAMP, , tramp}.

@node Miscellaneous, MS Windows, Subsystems, Top
@unnumbered 5 The Miscellaneous Stuff

This is part 5 of the XEmacs Frequently Asked Questions list.  This
section is devoted to anything that doesn't fit neatly into the other
sections.

@menu
Major & Minor Modes:
* Q5.0.1::      How can I do source code highlighting using font-lock?
* Q5.0.2::      I do not like cc-mode.  How do I use the old c-mode?
* Q5.0.3::      How do I get @samp{More} Syntax Highlighting on by default?
* Q5.0.4::      How can I enable auto-indent and/or Filladapt?
* Q5.0.5::      How can I get XEmacs to come up in text/auto-fill mode by default?
* Q5.0.6::      How do I start up a second shell buffer?
* Q5.0.7::      Telnet from shell filters too much.
* Q5.0.8::      Why does edt emulation not work?
* Q5.0.9::      How can I emulate VI and use it as my default mode?
* Q5.0.10::     [This question intentionally left blank]
* Q5.0.11::     [This question intentionally left blank]
* Q5.0.12::     How do I disable gnuserv from opening a new frame?
* Q5.0.13::     How do I start gnuserv so that each subsequent XEmacs is a client?
* Q5.0.14::     Strange things are happening in Shell Mode.
* Q5.0.15::     Where do I get the latest CC Mode?
* Q5.0.16::     I find auto-show-mode disconcerting.  How do I turn it off?
* Q5.0.17::     How can I get two instances of info?
* Q5.0.18::     [This question intentionally left blank]
* Q5.0.19::     Is there something better than LaTeX mode?
* Q5.0.20::     Is there a way to start a new XEmacs if there's no gnuserv running, and otherwise use gnuclient?

Emacs Lisp Programming Techniques:
* Q5.1.1::      The difference in key sequences between XEmacs and GNU Emacs?
* Q5.1.2::      Can I generate "fake" keyboard events?
* Q5.1.3::      Could you explain @code{read-kbd-macro} in more detail?
* Q5.1.4::      What is the performance hit of @code{let}?
* Q5.1.5::      What is the recommended use of @code{setq}?
* Q5.1.6::      What is the typical misuse of @code{setq}?
* Q5.1.7::      I like the @code{do} form of cl, does it slow things down?
* Q5.1.8::      I like recursion, does it slow things down?
* Q5.1.9::      How do I put a glyph as annotation in a buffer?
* Q5.1.10::     @code{map-extents} won't traverse all of my extents!
* Q5.1.11::     My elisp program is horribly slow.  Is there an easy way to find out where it spends time?

Sound:
* Q5.2.1::      How do I turn off the sound?
* Q5.2.2::      How do I get funky sounds instead of a boring beep?
* Q5.2.3::      What's NAS, how do I get it?
* Q5.2.4::      Sunsite sounds don't play.

Miscellaneous:
* Q5.3.1::      How do you make XEmacs indent CL if-clauses correctly?
* Q5.3.2::      [This question intentionally left blank]
* Q5.3.3::      How can I print WYSIWYG a font-locked buffer?
* Q5.3.4::      Getting @kbd{M-x lpr} to work with postscript printer.
* Q5.3.5::      How do I specify the paths that XEmacs uses for finding files?
* Q5.3.6::      [This question intentionally left blank]
* Q5.3.7::      Can I have the end of the buffer delimited in some way?
* Q5.3.8::      How do I insert today's date into a buffer?
* Q5.3.9::      Are only certain syntactic character classes available for abbrevs?
* Q5.3.10::     How can I get those oh-so-neat X-Face lines?
* Q5.3.11::     How do I add new Info directories?
* Q5.3.12::     What do I need to change to make printing work?
@end menu

@node Q5.0.1, Q5.0.2, Miscellaneous, Miscellaneous
@unnumberedsec 5.0: Major & Minor Modes
@unnumberedsubsec Q5.0.1: How can I do source code highlighting using font-lock?

For most modes, font-lock is already set up and just needs to be turned
on.  This can be done by adding the line:

@lisp
(require 'font-lock)
@end lisp

to your @file{init.el}/@file{.emacs}. (You can turn it on for the
current buffer and session only by @kbd{M-x font-lock-mode}.) See the
file @file{etc/sample.init.el} (@file{etc/sample.emacs} in XEmacs
versions prior to 21.4) for more information.

@c the old way:
@c     (add-hook 'emacs-lisp-mode-hook 'turn-on-font-lock)
@c     (add-hook 'dired-mode-hook      'turn-on-font-lock)

See also @code{Syntax Highlighting} from the @code{Options} menu.
Remember to save options.

@node Q5.0.2, Q5.0.3, Q5.0.1, Miscellaneous
@unnumberedsubsec Q5.0.2: I do not like cc-mode.  How do I use the old c-mode?

Well, first off, consider if you really want to do this.  cc-mode is
much more powerful than the old c-mode.  If you're having trouble
getting your old offsets to work, try using @code{c-set-offset} instead.
You might also consider using the package @code{cc-compat}.

But, if you still insist, add the following lines to your @file{init.el}/@file{.emacs}:

@lisp
(fmakunbound 'c-mode)
(makunbound 'c-mode-map)
(fmakunbound 'c++-mode)
(makunbound 'c++-mode-map)
(makunbound 'c-style-alist)
(load-library "old-c-mode")
(load-library "old-c++-mode")
@end lisp

This must be done before any other reference is made to either c-mode or
c++-mode.

@node Q5.0.3, Q5.0.4, Q5.0.2, Miscellaneous
@unnumberedsubsec Q5.0.3: How do I get @samp{More} Syntax Highlighting on by default?

Use the following code in your @file{init.el}/@file{.emacs}:

@lisp
(setq-default font-lock-maximum-decoration t)
@end lisp

@c In versions of XEmacs prior to 19.14, you had to use a kludgy solution
@c like this:
@c
@c @lisp
@c (setq c-font-lock-keywords c-font-lock-keywords-2
@c       c++-font-lock-keywords c++-font-lock-keywords-2
@c       lisp-font-lock-keywords lisp-font-lock-keywords-2)
@c @end lisp
@c
@c It will work for C, C++ and Lisp.
@c
See also @code{Syntax Highlighting} from the @code{Options} menu.
Remember to save options.

@node Q5.0.4, Q5.0.5, Q5.0.3, Miscellaneous
@unnumberedsubsec Q5.0.4: How can I enable auto-indent and/or Filladapt?

Put the following line in your @file{init.el}/@file{.emacs}:

@lisp
(setq indent-line-function 'indent-relative-maybe)
@end lisp

If you want to get fancy, try the @code{filladapt} package available
standard with XEmacs.  Put this into your @file{init.el}/@file{.emacs}:

@lisp
(require 'filladapt)
(setq-default filladapt-mode t)
(add-hook 'c-mode-hook 'turn-off-filladapt-mode)
@end lisp

This will enable Filladapt for all modes except C mode, where it doesn't
work well.  To turn Filladapt on only in particular major modes, remove
the @code{(setq-default ...)} line and use
@code{turn-on-filladapt-mode}, like this:

@lisp
(add-hook 'text-mode-hook 'turn-on-filladapt-mode)
@end lisp

You can customize filling and adaptive filling with Customize.
Select from the @code{Options} menu
@code{Advanced (Customize)->Emacs->Editing->Fill->Fill...}
or type @kbd{M-x customize @key{RET} fill @key{RET}}.

Note that well-behaving text-lookalike modes will run
@code{text-mode-hook} by default (e.g. that's what Message does).  For
the nasty ones, you'll have to provide the @code{add-hook}s yourself.

Please note that the @code{fa-extras} package is no longer useful.

@node Q5.0.5, Q5.0.6, Q5.0.4, Miscellaneous
@unnumberedsubsec Q5.0.5: How can I get XEmacs to come up in text/auto-fill mode by default?

Try the following lisp in your @file{init.el}/@file{.emacs}:

@lisp
(setq default-major-mode 'text-mode)
(setq text-mode-hook 'turn-on-auto-fill)
@end lisp

@strong{WARNING}: note that changing the value of
@code{default-major-mode} from @code{fundamental-mode} can break a large
amount of built-in code that expects newly created buffers to be in
@code{fundamental-mode}.  (Changing from @code{fundamental-mode} to
@code{text-mode} might not wreak too much havoc, but changing to
something more exotic like a lisp-mode would break many Emacs packages).

Note that Emacs by default starts up in buffer @code{*scratch*} in
@code{initial-major-mode}, which defaults to
@code{lisp-interaction-mode}. Thus adding the following form to your
Emacs init file will cause the initial @code{*scratch*} buffer to be put
into auto-fill'ed @code{text-mode}:

@lisp
(setq initial-major-mode
      (lambda ()
        (text-mode)
        (turn-on-auto-fill)))
@end lisp

Note that after your init file is loaded, if
@code{inhibit-startup-message} is @code{nil} (the default) and the
startup buffer is @code{*scratch*} then the startup message will be
inserted into @code{*scratch*}; it will be removed after a timeout by
erasing the entire @code{*scratch*} buffer.  Keep in mind this default
usage of @code{*scratch*} if you desire any prior manipulation of
@code{*scratch*} from within your Emacs init file. In particular,
anything you insert into @code{*scratch*} from your init file will be
later erased. Also, if you change the mode of the @code{*scratch*}
buffer, be sure that this will not interfere with possible later
insertion of the startup message (e.g. if you put @code{*scratch*} into
a nonstandard mode that has automatic font lock rules, then the startup
message might get fontified in a strange foreign manner, e.g. as code in
some programming language).

@node Q5.0.6, Q5.0.7, Q5.0.5, Miscellaneous
@unnumberedsubsec Q5.0.6: How do I start up a second shell buffer?

In the @code{*shell*} buffer:

@lisp
M-x rename-buffer @key{RET} *shell-1* @key{RET}
M-x shell RET
@end lisp

This will then start a second shell.  The key is that no buffer named
@samp{*shell*} can exist.  It might be preferable to use @kbd{M-x
rename-uniquely} to rename the @code{*shell*} buffer instead of @kbd{M-x
rename-buffer}.

Alternately, you can set the variable @code{shell-multiple-shells}.
If the value of this variable is non-nil, each time shell mode is invoked,
a new shell is made

@node Q5.0.7, Q5.0.8, Q5.0.6, Miscellaneous
@unnumberedsubsec Q5.0.7: Telnet from shell filters too much

I'm using the Emacs @kbd{M-x shell} function, and I would like to invoke
and use a telnet session within it.  Everything works fine except that
now all @samp{^M}'s are filtered out by Emacs.  Fixes?

Use @kbd{M-x rsh} or @kbd{M-x telnet} to open remote sessions rather
than doing rsh or telnet within the local shell buffer.  Starting with
XEmacs-20.3 you can also use @kbd{M-x ssh} to open secure remote session
if you have @code{ssh} installed.

@node Q5.0.8, Q5.0.9, Q5.0.7, Miscellaneous
@unnumberedsubsec Q5.0.8: Why does edt emulation not work?

We don't know, but you can use tpu-edt emulation instead, which works
fine and is a little fancier than the standard edt emulation.  To do
this, add the following line to your @file{init.el}/@file{.emacs}:

@lisp
(tpu-edt)
@end lisp

If you don't want it to replace @kbd{C-h} with an edt-style help menu
add this as well:

@lisp
(global-set-key [(control h)] 'help-for-help)
@end lisp

@node Q5.0.9, Q5.0.10, Q5.0.8, Miscellaneous
@unnumberedsubsec Q5.0.9: How can I emulate VI and use it as my default mode?

Our recommended VI emulator is viper. To make viper-mode the default,
add this to your @file{init.el}/@file{.emacs}:

@lisp
(viper-mode)
@end lisp

@email{kifer@@CS.SunySB.EDU, Michael Kifer} writes:

@quotation
This should be added as close to the top of @file{init.el}/@file{.emacs} as you can get
it, otherwise some minor modes may not get viper-ized.
@end quotation

@node Q5.0.10, Q5.0.11, Q5.0.9, Miscellaneous
@unnumberedsubsec Q5.0.10: [This question intentionally left blank]

Obsolete question, left blank to avoid renumbering

@node Q5.0.11, Q5.0.12, Q5.0.10, Miscellaneous
@unnumberedsubsec Q5.0.11: [This question intentionally left blank]

Obsolete question, left blank to avoid renumbering

@node Q5.0.12, Q5.0.13, Q5.0.11, Miscellaneous
@unnumberedsubsec Q5.0.12: How do I disable gnuserv from opening a new frame?

If you set the @code{gnuserv-frame} variable to the frame that should be
used to display buffers that are pulled up, a new frame will not be
created. For example, you could put

@lisp
(setq gnuserv-frame (selected-frame))
@end lisp

early on in your @file{init.el}/@file{.emacs}, to ensure that the first frame created
is the one used for your gnuserv buffers.

There is an option to set the gnuserv target to the current frame.  See
@code{Options->Display->"Other Window" Location->Make Current Frame Gnuserv Target}

Starting with XEmacs-20.3 you can also change this with Customize.
Select from the @code{Options} menu
@code{Advanced (Customize)->Emacs->Environment->Gnuserv->Gnuserv Frame...}
or type @kbd{M-x customize @key{RET} gnuserv @key{RET}}.


@node Q5.0.13, Q5.0.14, Q5.0.12, Miscellaneous
@unnumberedsubsec Q5.0.13: How do I start gnuserv so that each subsequent XEmacs is a client?

Put the following in your @file{init.el}/@file{.emacs} file to start the server:

@lisp
(gnuserv-start)
@end lisp

Start your first XEmacs as usual.  After that, you can do:

@example
gnuclient randomfilename
@end example

from the command line to get your existing XEmacs process to open a new
frame and visit randomfilename in that window. When you're done editing
randomfilename, hit @kbd{C-x #} to kill the buffer and get rid of the
frame.

See also man page of gnuclient.

@node Q5.0.14, Q5.0.15, Q5.0.13, Miscellaneous
@unnumberedsubsec Q5.0.14: Strange things are happening in Shell Mode.

Sometimes (i.e. it's not repeatable, and I can't work out why it
happens) when I'm typing into shell mode, I hit return and only a
portion of the command is given to the shell, and a blank prompt is
returned.  If I hit return again, the rest of the previous command is
given to the shell.

@email{martin@@xemacs.org, Martin Buchholz} writes:

@quotation
There is a known problem with interaction between @code{csh} and the
@code{filec} option and XEmacs.  You should add the following to your
@file{.cshrc}:

@example
if ( "$TERM" == emacs || "$TERM" == unknown ) unset filec
@end example
@end quotation

@node Q5.0.15, Q5.0.16, Q5.0.14, Miscellaneous
@unnumberedsubsec Q5.0.15: Where do I get the latest CC Mode?

@email{bwarsaw@@cnri.reston.va.us, Barry A. Warsaw} writes:

@quotation
This can be had from @uref{http://www.python.org/emacs/}.
@end quotation

@node Q5.0.16, Q5.0.17, Q5.0.15, Miscellaneous
@unnumberedsubsec Q5.0.16: I find auto-show-mode disconcerting.  How do I turn it off?

@code{auto-show-mode} controls whether or not a horizontal scrollbar
magically appears when a line is too long to be displayed.  This is
enabled by default.  To turn it off, put the following in your
@file{init.el}/@file{.emacs}:

@lisp
(setq auto-show-mode nil)
(setq-default auto-show-mode nil)
@end lisp

@node Q5.0.17, Q5.0.18, Q5.0.16, Miscellaneous
@unnumberedsubsec Q5.0.17: How can I get two instances of info?

Before 21.4, you can't.  The @code{info} package does not provide for
multiple info buffers.  In 21.4, this should be fixed. #### how?

@node Q5.0.18, Q5.0.19, Q5.0.17, Miscellaneous
@unnumberedsubsec Q5.0.18: [This question intentionally left blank]

@node Q5.0.19, Q5.0.20, Q5.0.18, Miscellaneous
@unnumberedsubsec Q5.0.19: Is there something better than LaTeX mode?

@email{dak@@fsnif.neuroinformatik.ruhr-uni-bochum.de, David Kastrup} writes:

@quotation
The standard TeX modes leave much to be desired, and are somewhat
leniently maintained.  Serious TeX users use AUC TeX (@pxref{Q4.7.1}).
@end quotation

@node Q5.0.20, Q5.1.1, Q5.0.19, Miscellaneous
@unnumberedsubsec Q5.0.20: Is there a way to start a new XEmacs if there's no gnuserv running, and otherwise use gnuclient?

@email{vroonhof@@math.ethz.ch, Jan Vroonhof} writes:
@quotation
Here is one of the solutions, we have this in a script called
@file{etc/editclient.sh}.
@example
 #!/bin/sh
 if gnuclient -batch -eval t >/dev/null 2>&1
 then
   exec gnuclient $@{1+"$@@"@}
 else
   xemacs -unmapped -f gnuserv-start &
   until gnuclient -batch -eval t >/dev/null 2>&1
   do
      sleep 1
   done
   exec gnuclient $@{1+"$@@"@}
 fi
@end example

Note that there is a known problem when running XEmacs and 'gnuclient
-nw' on the same TTY.
@end quotation

@node Q5.1.1, Q5.1.2, Q5.0.20, Miscellaneous
@unnumberedsec 5.1: Emacs Lisp Programming Techniques
@unnumberedsubsec Q5.1.1: What is the difference in key sequences between XEmacs and GNU Emacs?

@email{clerik@@naggum.no, Erik Naggum} writes;

@quotation
Emacs has a legacy of keyboards that produced characters with modifier
bits, and therefore map a variety of input systems into this scheme even
today.  XEmacs is instead optimized for X events.  This causes an
incompatibility in the way key sequences are specified, but both Emacs
and XEmacs will accept a key sequence as a vector of lists of modifiers
that ends with a key, e.g., to bind @kbd{M-C-a}, you would say
@code{[(meta control a)]} in both Emacsen.  XEmacs has an abbreviated
form for a single key, just (meta control a).  Emacs has an abbreviated
form for the Control and the Meta modifiers to string-characters (the
ASCII characters), as in @samp{\M-\C-a}.  XEmacs users need to be aware
that the abbreviated form works only for one-character key sequences,
while Emacs users need to be aware that the string-character is rather
limited.  Specifically, the string-character can accommodate only 256
different values, 128 of which have the Meta modifier and 128 of which
have not.  In each of these blocks, only 32 characters have the Control
modifier.  Whereas @code{[(meta control A)]} differs from @code{[(meta
control a)]} because the case differs, @samp{\M-\C-a} and @samp{\M-\C-A}
do not.  Programmers are advised to use the full common form, both
because it is more readable and less error-prone, and because it is
supported by both Emacsen.
@end quotation

Another (even safer) way to be sure of the key-sequences is to use the
@code{read-kbd-macro} function, which takes a string like @samp{C-c
<up>}, and converts it to the internal key representation of the Emacs
you use.  The function is available both on XEmacs and GNU Emacs.

@node Q5.1.2, Q5.1.3, Q5.1.1, Miscellaneous
@unnumberedsubsec Q5.1.2: Can I generate "fake" keyboard events?

I wonder if there is an interactive function that can generate
@dfn{fake} keyboard events.  This way, I could simply map them inside
XEmacs.

This seems to work:

@lisp
(defun cg--generate-char-event (ch)
  "Generate an event, as if ch has been typed"
  (dispatch-event (character-to-event ch)))

;;  Backspace and Delete stuff
(global-set-key [backspace]
  (lambda () (interactive) (cg--generate-char-event 127)))
(global-set-key [unknown_keysym_0x4]
  (lambda () (interactive) (cg--generate-char-event 4)))
@end lisp

@node Q5.1.3, Q5.1.4, Q5.1.2, Miscellaneous
@unnumberedsubsec Q5.1.3: Could you explain @code{read-kbd-macro} in more detail?

The @code{read-kbd-macro} function returns the internal Emacs
representation of a human-readable string (which is its argument).
Thus:

@lisp
(read-kbd-macro "C-c C-a")
@result{} [(control ?c) (control ?a)]

(read-kbd-macro "C-c C-. <up>")
@result{} [(control ?c) (control ?.) up]
@end lisp

In GNU Emacs the same forms will be evaluated to what GNU Emacs
understands internally---the sequences @code{"\C-x\C-c"} and @code{[3
67108910 up]}, respectively.

The exact @dfn{human-readable} syntax is defined in the docstring of
@code{edmacro-mode}.  I'll repeat it here, for completeness.

@quotation
Format of keyboard macros during editing:

Text is divided into @dfn{words} separated by whitespace.  Except for
the words described below, the characters of each word go directly as
characters of the macro.  The whitespace that separates words is
ignored.  Whitespace in the macro must be written explicitly, as in
@kbd{foo @key{SPC} bar @key{RET}}.

@itemize @bullet
@item
The special words @kbd{RET}, @kbd{SPC}, @kbd{TAB}, @kbd{DEL}, @kbd{LFD},
@kbd{ESC}, and @kbd{NUL} represent special control characters.  The
words must be written in uppercase.

@item
A word in angle brackets, e.g., @code{<return>}, @code{<down>}, or
@code{<f1>}, represents a function key.  (Note that in the standard
configuration, the function key @code{<return>} and the control key
@key{RET} are synonymous.)  You can use angle brackets on the words
@key{RET}, @key{SPC}, etc., but they are not required there.

@item
Keys can be written by their @sc{ascii} code, using a backslash followed
by up to six octal digits.  This is the only way to represent keys with
codes above \377.

@item
One or more prefixes @kbd{M-} (meta), @kbd{C-} (control), @kbd{S-}
(shift), @kbd{A-} (alt), @kbd{H-} (hyper), and @kbd{s-} (super) may
precede a character or key notation.  For function keys, the prefixes
may go inside or outside of the brackets: @code{C-<down>} @equiv{}
@code{<C-down>}.  The prefixes may be written in any order: @kbd{M-C-x}
@equiv{} @kbd{C-M-x}.

Prefixes are not allowed on multi-key words, e.g., @kbd{C-abc}, except
that the Meta prefix is allowed on a sequence of digits and optional
minus sign: @kbd{M--123} @equiv{} @kbd{M-- M-1 M-2 M-3}.

@item
The @code{^} notation for control characters also works: @kbd{^M}
@equiv{} @kbd{C-m}.

@item
Double angle brackets enclose command names: @code{<<next-line>>} is
shorthand for @kbd{M-x next-line @key{RET}}.

@item
Finally, @code{REM} or @code{;;} causes the rest of the line to be
ignored as a comment.
@end itemize

Any word may be prefixed by a multiplier in the form of a decimal number
and @code{*}: @code{3*<right>} @equiv{} @code{<right> <right> <right>},
and @code{10*foo} @equiv{}
@iftex
@*
@end iftex
@code{foofoofoofoofoofoofoofoofoofoo}.

Multiple text keys can normally be strung together to form a word, but
you may need to add whitespace if the word would look like one of the
above notations: @code{; ; ;} is a keyboard macro with three semicolons,
but @code{;;;} is a comment.  Likewise, @code{\ 1 2 3} is four keys but
@code{\123} is a single key written in octal, and @code{< right >} is
seven keys but @code{<right>} is a single function key.  When in doubt,
use whitespace.
@end quotation

@node Q5.1.4, Q5.1.5, Q5.1.3, Miscellaneous
@unnumberedsubsec Q5.1.4: What is the performance hit of @code{let}?

In most cases, not noticeable.  Besides, there's no avoiding
@code{let}---you have to bind your local variables, after all.  Some
pose a question whether to nest @code{let}s, or use one @code{let} per
function.  I think because of clarity and maintenance (and possible
future implementation), @code{let}-s should be used (nested) in a way to
provide the clearest code.

@node Q5.1.5, Q5.1.6, Q5.1.4, Miscellaneous
@unnumberedsubsec Q5.1.5: What is the recommended use of @code{setq}?

@itemize @bullet
@item Global variables

You will typically @code{defvar} your global variable to a default
value, and use @code{setq} to set it later.

It is never a good practice to @code{setq} user variables (like
@code{case-fold-search}, etc.), as it ignores the user's choice
unconditionally.  Note that @code{defvar} doesn't change the value of a
variable if it was bound previously.  If you wish to change a
user-variable temporarily, use @code{let}:

@lisp
(let ((case-fold-search nil))
  ...                                   ; code with searches that must be case-sensitive
  ...)
@end lisp

You will notice the user-variables by their docstrings beginning with an
asterisk (a convention).

@item Local variables

Bind them with @code{let}, which will unbind them (or restore their
previous value, if they were bound) after exiting from the @code{let}
form.  Change the value of local variables with @code{setq} or whatever
you like (e.g. @code{incf}, @code{setf} and such).  The @code{let} form
can even return one of its local variables.

Typical usage:

@lisp
;; iterate through the elements of the list returned by
;; `hairy-function-that-returns-list'
(let ((l (hairy-function-that-returns-list)))
  (while l
    ... do something with (car l) ...
    (setq l (cdr l))))
@end lisp

Another typical usage includes building a value simply to work with it.

@lisp
;; Build the mode keymap out of the key-translation-alist
(let ((inbox (file-truename (expand-file-name box)))
      (i 0))
  ... code dealing with inbox ...
  inbox)
@end lisp

This piece of code uses the local variable @code{inbox}, which becomes
unbound (or regains old value) after exiting the form.  The form also
returns the value of @code{inbox}, which can be reused, for instance:

@lisp
(setq foo-processed-inbox
      (let .....))
@end lisp
@end itemize

@node Q5.1.6, Q5.1.7, Q5.1.5, Miscellaneous
@unnumberedsubsec Q5.1.6: What is the typical misuse of @code{setq} ?

A typical misuse is probably @code{setq}ing a variable that was meant to
be local.  Such a variable will remain bound forever, never to be
garbage-collected.  For example, the code doing:

@lisp
(defun my-function (whatever)
  (setq a nil)
  ... build a large list ...
  ... and exit ...)
@end lisp

does a bad thing, as @code{a} will keep consuming memory, never to be
unbound.  The correct thing is to do it like this:

@lisp
(defun my-function (whatever)
  (let (a)                              ; default initialization is to nil
    ... build a large list ...
    ... and exit, unbinding `a' in the process  ...)
@end lisp

Not only is this prettier syntactically, but it makes it possible for
Emacs to garbage-collect the objects which @code{a} used to reference.

Note that even global variables should not be @code{setq}ed without
@code{defvar}ing them first, because the byte-compiler issues warnings.
The reason for the warning is the following:

@lisp
(defun flurgoze nil)                    ; ok, global internal variable
...

(setq flurghoze t)                      ; ops!  a typo, but semantically correct.
                                        ; however, the byte-compiler warns.

While compiling toplevel forms:
** assignment to free variable flurghoze
@end lisp

@node Q5.1.7, Q5.1.8, Q5.1.6, Miscellaneous
@unnumberedsubsec Q5.1.7: I like the @code{do} form of cl, does it slow things down?

It shouldn't.  Here is what Dave Gillespie has to say about cl.el
performance:

@quotation
Many of the advanced features of this package, such as @code{defun*},
@code{loop}, and @code{setf}, are implemented as Lisp macros.  In
byte-compiled code, these complex notations will be expanded into
equivalent Lisp code which is simple and efficient.  For example, the
forms

@lisp
(incf i n)
(push x (car p))
@end lisp

are expanded at compile-time to the Lisp forms

@lisp
(setq i (+ i n))
(setcar p (cons x (car p)))
@end lisp

which are the most efficient ways of doing these respective operations
in Lisp.  Thus, there is no performance penalty for using the more
readable @code{incf} and @code{push} forms in your compiled code.

@emph{Interpreted} code, on the other hand, must expand these macros
every time they are executed.  For this reason it is strongly
recommended that code making heavy use of macros be compiled.  (The
features labelled @dfn{Special Form} instead of @dfn{Function} in this
manual are macros.)  A loop using @code{incf} a hundred times will
execute considerably faster if compiled, and will also garbage-collect
less because the macro expansion will not have to be generated, used,
and thrown away a hundred times.

You can find out how a macro expands by using the @code{cl-prettyexpand}
function.
@end quotation

@node Q5.1.8, Q5.1.9, Q5.1.7, Miscellaneous
@unnumberedsubsec Q5.1.8: I like recursion, does it slow things down?

Yes.  Emacs byte-compiler cannot do much to optimize recursion.  But
think well whether this is a real concern in Emacs.  Much of the Emacs
slowness comes from internal mechanisms such as redisplay, or from the
fact that it is an interpreter.

Please try not to make your code much uglier to gain a very small speed
gain.  It's not usually worth it.

@node Q5.1.9, Q5.1.10, Q5.1.8, Miscellaneous
@unnumberedsubsec Q5.1.9: How do I put a glyph as annotation in a buffer?

Here is a solution that will insert the glyph annotation at the
beginning of buffer:

@lisp
(make-annotation (make-glyph '([FORMAT :file FILE]
                               [string :data "fallback-text"]))
                 (point-min)
                 'text
                 (current-buffer))
@end lisp

Replace @samp{FORMAT} with an unquoted symbol representing the format of
the image (e.g. @code{xpm}, @code{xbm}, @code{gif}, @code{jpeg}, etc.)
Instead of @samp{FILE}, use the image file name
(e.g.
@iftex
@*
@end iftex
@file{/usr/local/lib/xemacs-21.4/etc/recycle.xpm}).

You can turn this to a function (that optionally prompts you for a file
name), and inserts the glyph at @code{(point)} instead of
@code{(point-min)}.

@node Q5.1.10, Q5.1.11, Q5.1.9, Miscellaneous
@unnumberedsubsec Q5.1.10: @code{map-extents} won't traverse all of my extents!

I tried to use @code{map-extents} to do an operation on all the extents
in a region.  However, it seems to quit after processing a random number
of extents.  Is it buggy?

No.  The documentation of @code{map-extents} states that it will iterate
across the extents as long as @var{function} returns @code{nil}.
Unexperienced programmers often forget to return @code{nil} explicitly,
which results in buggy code.  For instance, the following code is
supposed to delete all the extents in a buffer, and issue as many
@samp{fubar!} messages.

@lisp
(map-extents (lambda (ext ignore)
               (delete-extent ext)
               (message "fubar!")))
@end lisp

Instead, it will delete only the first extent, and stop right there --
because @code{message} will return a non-nil value.  The correct code
is:

@lisp
(map-extents (lambda (ext ignore)
               (delete-extent ext)
               (message "fubar!")
               nil))
@end lisp

@node Q5.1.11, Q5.2.1, Q5.1.10, Miscellaneous
@unnumberedsubsec Q5.1.11: My elisp program is horribly slow.  Is there
an easy way to find out where it spends time?
@c New

@email{hniksic@@xemacs.org, Hrvoje Niksic} writes:
@quotation
Under XEmacs 20.4 and later you can use @kbd{M-x profile-key-sequence},
press a key (say @key{RET} in the Gnus Group buffer), and get the
results using @kbd{M-x profile-results}.  It should give you an idea of
where the time is being spent.
@end quotation

@node Q5.2.1, Q5.2.2, Q5.1.11, Miscellaneous
@unnumberedsubsec Q5.2.1: How do I turn off the sound?

Add the following line to your @file{init.el}/@file{.emacs}:

@lisp
(setq bell-volume 0)
(setq sound-alist nil)
@end lisp

That will make your XEmacs totally silent---even the default ding sound
(TTY beep on TTY-s) will be gone.

Starting with XEmacs 20.2 you can also change these with Customize.
Select from the @code{Options} menu
@code{Advanced (Customize)->Emacs->Environment->Sound->Sound...} or type
@kbd{M-x customize @key{RET} sound @key{RET}}.


@node Q5.2.2, Q5.2.3, Q5.2.1, Miscellaneous
@unnumberedsubsec Q5.2.2: How do I get funky sounds instead of a boring beep?

Make sure your XEmacs was compiled with sound support, and then put this
in your @file{init.el}/@file{.emacs}:

@lisp
(load-default-sounds)
@end lisp

@c The sound support in XEmacs 19.14 was greatly improved over previous
@c versions.
@c
@node Q5.2.3, Q5.2.4, Q5.2.2, Miscellaneous
@unnumberedsubsec Q5.2.3: What's NAS, how do I get it?

@xref{Q2.0.3}, for an explanation of the @dfn{Network Audio System}.

@node Q5.2.4, Q5.3.1, Q5.2.3, Miscellaneous
@unnumberedsubsec Q5.2.4: Sunsite sounds don't play.

I'm having some trouble with sounds I've downloaded from sunsite.  They
play when I run them through @code{showaudio} or cat them directly to
@file{/dev/audio}, but XEmacs refuses to play them.

@email{gutschk@@uni-muenster.de, Markus Gutschke} writes:

@quotation
[Many of] These files have an (erroneous) 24byte header that tells about
the format that they have been recorded in. If you cat them to
@file{/dev/audio}, the header will be ignored and the default behavior
for /dev/audio will be used. This happens to be 8kHz uLaw. It is
probably possible to fix the header by piping through @code{sox} and
passing explicit parameters for specifying the sampling format; you then
need to perform a 'null' conversion from SunAudio to SunAudio.
@end quotation

@node Q5.3.1, Q5.3.2, Q5.2.4, Miscellaneous
@unnumberedsec 5.3: Miscellaneous
@unnumberedsubsec Q5.3.1: How do you make XEmacs indent CL if-clauses correctly?

I'd like XEmacs to indent all the clauses of a Common Lisp @code{if} the
same amount instead of indenting the 3rd clause differently from the
first two.

One way is to add, to @file{init.el}/@file{.emacs}:

@lisp
(put 'if 'lisp-indent-function nil)
@end lisp

However, note that the package @code{cl-indent} that comes with
XEmacs sets up this kind of indentation by default.  @code{cl-indent}
also knows about many other CL-specific forms.  To use @code{cl-indent},
one can do this:

@lisp
(load "cl-indent")
(setq lisp-indent-function (function common-lisp-indent-function))
@end lisp

One can also customize @file{cl-indent.el} so it mimics the default
@code{if} indentation @code{then} indented more than the @code{else}.
Here's how:

@lisp
(put 'if 'common-lisp-indent-function '(nil nil &body))
@end lisp

Also, a new version (1.2) of @file{cl-indent.el} was posted to
comp.emacs.xemacs on 12/9/94.  This version includes more documentation
than previous versions.  This may prove useful if you need to customize
any indent-functions.

@node Q5.3.2, Q5.3.3, Q5.3.1, Miscellaneous
@unnumberedsubsec Q5.3.2: [This question intentionally left blank]

Obsolete question, left blank to avoid renumbering.

@node Q5.3.3, Q5.3.4, Q5.3.2, Miscellaneous
@unnumberedsubsec Q5.3.3: How can I print WYSIWYG a font-locked buffer?

Font-lock looks nice.  How can I print (WYSIWYG) the highlighted
document?

The package @code{ps-print}, which is now included with XEmacs, provides
the ability to do this.  The source code contains complete instructions
on its use, in
@file{$prefix/lib/xemacs/xemacs-packages/lisp/ps-print/ps-print.el},
being the default location of an installed ps-print package.

@node Q5.3.4, Q5.3.5, Q5.3.3, Miscellaneous
@unnumberedsubsec Q5.3.4: Getting @kbd{M-x lpr} to work with postscript printer.

My printer is a Postscript printer and @code{lpr} only works for
Postscript files, so how do I get @kbd{M-x lpr-region} and @kbd{M-x
lpr-buffer} to work?

Put something like this in your @file{init.el}/@file{.emacs}:

@lisp
(setq lpr-command "a2ps")
(setq lpr-switches '("-p" "-1"))
@end lisp

If you don't use a2ps to convert ASCII to postscript (why not, it's
free?), replace with the command you do use.  Note also that some
versions of a2ps require a @samp{-Pprinter} to ensure spooling.

@node Q5.3.5, Q5.3.6, Q5.3.4, Miscellaneous
@unnumberedsubsec Q5.3.5: How do I specify the paths that XEmacs uses for finding files?

You can specify what paths to use by using a number of different flags
when running configure.  See the section MAKE VARIABLES in the top-level
file INSTALL in the XEmacs distribution for a listing of those flags.

Most of the time, however, the simplest fix is: @strong{do not} specify
paths as you might for GNU Emacs.  XEmacs can generally determine the
necessary paths dynamically at run time.  The only path that generally
needs to be specified is the root directory to install into.  That can
be specified by passing the @code{--prefix} flag to configure.  For a
description of the XEmacs install tree, please consult the @file{NEWS}
file.

@node Q5.3.6, Q5.3.7, Q5.3.5, Miscellaneous
@unnumberedsubsec Q5.3.6: [This question intentionally left blank]

Obsolete question, left blank to avoid renumbering.

@node Q5.3.7, Q5.3.8, Q5.3.6, Miscellaneous
@unnumberedsubsec Q5.3.7: Can I have the end of the buffer delimited in some way?

Say, with: @samp{[END]}?

Try this:

@lisp
(let ((ext (make-extent (point-min) (point-max))))
  (set-extent-property ext 'start-closed t)
  (set-extent-property ext 'end-closed t)
  (set-extent-property ext 'detachable nil)
  (set-extent-end-glyph ext (make-glyph [string :data "[END]"])))
@end lisp

Since this is XEmacs, you can specify an icon to be shown on
window-system devices.  To do so, change the @code{make-glyph} call to
something like this:

@lisp
(make-glyph '([xpm :file "~/something.xpm"]
              [string :data "[END]"]))
@end lisp

You can inline the @sc{xpm} definition yourself by specifying
@code{:data} instead of @code{:file}.  Here is such a full-featured
version that works on both X and TTY devices:

@lisp
(let ((ext (make-extent (point-min) (point-max))))
  (set-extent-property ext 'start-closed t)
  (set-extent-property ext 'end-closed t)
  (set-extent-property ext 'detachable nil)
  (set-extent-end-glyph ext (make-glyph '([xpm :data "\
/* XPM */
static char* eye = @{
\"20 11 7 2\",
\"__ c None\"
\"_` c #7f7f7f\",
\"_a c #fefefe\",
\"_b c #7f0000\",
\"_c c #fefe00\",
\"_d c #fe0000\",
\"_e c #bfbfbf\",
\"___________`_`_`___b_b_b_b_________`____\",
\"_________`_`_`___b_c_c_c_b_b____________\",
\"_____`_`_`_e___b_b_c_c_c___b___b_______`\",
\"___`_`_e_a___b_b_d___b___b___b___b______\",
\"_`_`_e_a_e___b_b_d_b___b___b___b___b____\",
\"_`_`_a_e_a___b_b_d___b___b___b___b___b__\",
\"_`_`_e_a_e___b_b_d_b___b___b___b___b_b__\",
\"___`_`_e_a___b_b_b_d_c___b___b___d_b____\",
\"_____`_`_e_e___b_b_b_d_c___b_b_d_b______\",
\"_`_____`_`_`_`___b_b_b_d_d_d_d_b________\",
\"___`_____`_`_`_`___b_b_b_b_b_b__________\",
@} ;"]
                                          [string :data "[END]"]))))
@end lisp

Note that you might want to make this a function, and put it to a hook.
We leave that as an exercise for the reader.

@node Q5.3.8, Q5.3.9, Q5.3.7, Miscellaneous
@unnumberedsubsec Q5.3.8: How do I insert today's date into a buffer?

Like this:

@lisp
(insert (current-time-string))
@end lisp

@node Q5.3.9, Q5.3.10, Q5.3.8, Miscellaneous
@unnumberedsubsec Q5.3.9: Are only certain syntactic character classes available for abbrevs?

@email{gutschk@@uni-muenster.de, Markus Gutschke} writes:

@quotation
Yes, abbrevs only expands word-syntax strings. While XEmacs does not
prevent you from defining (e.g. with @kbd{C-x a g} or @kbd{C-x a l})
abbrevs that contain special characters, it will refuse to expand
them. So you need to ensure, that the abbreviation contains letters and
digits only. This means that @samp{xd}, @samp{d5}, and @samp{5d} are
valid abbrevs, but @samp{&d}, and @samp{x d} are not.

If this sounds confusing to you, (re-)read the online documentation for
abbrevs (@kbd{C-h i m XEmacs @key{RET} m Abbrevs @key{RET}}), and then come back and
read this question/answer again.
@end quotation

Starting with XEmacs 20.3 this restriction has been lifted.

@node Q5.3.10, Q5.3.11, Q5.3.9, Miscellaneous
@unnumberedsubsec Q5.3.10: How can I get those oh-so-neat X-Face lines?

Firstly there is an ftp site which describes X-faces and has the
associated tools mentioned below, at
@uref{ftp://ftp.cs.indiana.edu:/pub/faces/}.

Then the steps are

@enumerate
@item
Create 48x48x1 bitmap with your favorite tool

@item
Convert to "icon" format using one of xbm2ikon, pbmtoicon, etc.,
and then compile the face.

@item
@example
cat file.xbm | xbm2ikon |compface > file.face
@end example

@item
Then be sure to quote things that are necessary for emacs strings:

@example
cat ./file.face | sed 's/\\/\\\\/g'
@iftex
\ @*
@end iftex
| sed 's/\"/\\\"/g' > ./file.face.quoted
@end example

@item
Then set up emacs to include the file as a mail header - there were a
couple of suggestions here---either something like:

@lisp
(setq  mail-default-headers
       "X-Face:  @email{Ugly looking text string here}")
@end lisp

Or, alternatively, as:

@lisp
(defun mail-insert-x-face ()
  (save-excursion
    (goto-char (point-min))
    (search-forward mail-header-separator)
    (beginning-of-line)
    (insert "X-Face:")
    (insert-file-contents "~/.face")))

(add-hook 'mail-setup-hook 'mail-insert-x-face)
@end lisp
@end enumerate

However, 2 things might be wrong:

Some versions of pbmtoicon produces some header lines that is not
expected by the version of compface that I grabbed. So I found I had to
include a @code{tail +3} in the pipeline like this:

@example
cat file.xbm | xbm2ikon | tail +3 |compface > file.face
@end example

Some people have also found that if one uses the @code{(insert-file)}
method, one should NOT quote the face string using the sed script .

It might also be helpful to use @email{stig@@hackvan.com, Stig's} script
(included in the compface distribution at XEmacs.org) to do the
conversion.
@comment For convenience xbm2xface is available for anonymous FTP at
@comment @uref{ftp://ftp.miranova.com/pub/xemacs/xbm2xface.pl}.

Contributors for this item:

Paul Emsley,
Ricardo Marek,
Amir J. Katz,
Glen McCort,
Heinz Uphoff,
Peter Arius,
Paul Harrison, and
Vegard Vesterheim

@node Q5.3.11, Q5.3.12, Q5.3.10, Miscellaneous
@unnumberedsubsec Q5.3.11: How do I add new Info directories?

You use something like:

@lisp
(setq Info-directory-list (cons
                           (expand-file-name "~/info")
                           Info-default-directory-list))
@end lisp

@email{davidm@@prism.kla.com, David Masterson} writes:

@quotation
Emacs Info and XEmacs Info do many things differently.  If you're trying to
support a number of versions of Emacs, here are some notes to remember:

@enumerate
@item
Emacs Info scans @code{Info-directory-list} from right-to-left while
XEmacs Info reads it from left-to-right, so append to the @emph{correct}
end of the list.

@item
Use @code{Info-default-directory-list} to initialize
@code{Info-directory-list} @emph{if} it is available at startup, but not
all Emacsen define it.

@item
Emacs Info looks for a standard @file{dir} file in each of the
directories scanned from #1 and magically concatenates them together.

@item
XEmacs Info looks for a @file{localdir} file (which consists of just the
menu entries from a @file{dir} file) in each of the directories scanned
from #1 (except the first), does a simple concatenation of them, and
magically attaches the resulting list to the end of the menu in the
@file{dir} file in the first directory.
@end enumerate

Another alternative is to convert the documentation to HTML with
texi2html and read it from a web browser like Lynx or W3.
@end quotation

@node Q5.3.12,  , Q5.3.11, Miscellaneous
@unnumberedsubsec Q5.3.12: What do I need to change to make printing work?

For regular printing there are two variables that can be customized.

@table @code
@item lpr-command
This should be set to a command that takes standard input and sends
it to a printer.  Something like:

@lisp
(setq lpr-command "lp")
@end lisp

@item lpr-switches
This should be set to a list that contains whatever the print command
requires to do its job.  Something like:

@lisp
(setq lpr-switches '("-depson"))
@end lisp
@end table

For postscript printing there are three analogous variables to
customize.

@table @code
@item ps-lpr-command
This should be set to a command that takes postscript on standard input
and directs it to a postscript printer.

@item ps-lpr-switches
This should be set to a list of switches required for
@code{ps-lpr-command} to do its job.

@item ps-print-color-p
This boolean variable should be set @code{t} if printing will be done in
color, otherwise it should be set to @code{nil}.
@end table

NOTE: It is an undocumented limitation in XEmacs that postscript
printing (the @code{Pretty Print Buffer} menu item) @strong{requires} a
window system environment.  It cannot be used outside of X11.

@node MS Windows, Current Events, Miscellaneous, Top
@unnumbered 6 XEmacs on MS Windows

This is part 6 of the XEmacs Frequently Asked Questions list, written by
Hrvoje Niksic and others.  This section is devoted to the MS Windows
port of XEmacs.

@menu
General Info
* Q6.0.1::      What is the status of the XEmacs port to Windows?
* Q6.0.2::      What flavors of MS Windows are supported?  The list name implies NT only.
* Q6.0.3::      Are binaries available?
* Q6.0.4::      Can I build XEmacs on MS Windows with X support?  Do I need to?
* Q6.0.5::      I'd like to help out.  What do I do?
* Q6.0.6::      What are Cygwin and MinGW, and do I need them to run XEmacs?
* Q6.0.7::      What exactly are all the different ways to build XEmacs under Windows?

Building XEmacs on MS Windows:
* Q6.1.1::      What compiler/libraries do I need to compile XEmacs?
* Q6.1.2::      How do I compile the native port?
* Q6.1.3::      What do I need for Cygwin?
* Q6.1.4::      How do I compile under Cygwin?
* Q6.1.5::      How do I compile using MinGW (aka @samp{the -mno-cygwin flag to gcc})?
* Q6.1.6::      I decided to run with X.  Where do I get an X server?
* Q6.1.7::      How do I compile with X support?

Customization and User Interface:
* Q6.2.1::      How does the port cope with differences in the Windows user interface?
* Q6.2.2::      How do I change fonts in XEmacs on MS Windows?
* Q6.2.3::      Where do I put my @file{init.el}/@file{.emacs} file?
* Q6.2.4::      How do I get Windows Explorer to associate a file type with XEmacs?
* Q6.2.5::      Is it possible to print from XEmacs?

Miscellaneous:
* Q6.3.1::      Does XEmacs rename all the @samp{win32-*} symbols to @samp{w32-*}?
* Q6.3.2::      What are the differences between the various MS Windows emacsen?
* Q6.3.3::      XEmacs 21.1 on Windows used to spawn an ugly console window on every startup.  Has that been fixed?
* Q6.3.4::      What is the porting team doing at the moment?

Troubleshooting:
* Q6.4.1::      XEmacs won't start on Windows.
* Q6.4.2::      Why do I get a blank toolbar on Windows 95?
* Q6.4.3::      XEmacs complains "No such file or directory, diff"

@end menu

@node Q6.0.1, Q6.0.2, MS Windows, MS Windows
@unnumberedsec 6.0: General Info
@unnumberedsubsec Q6.0.1: What is the status of the XEmacs port to Windows?

Is XEmacs really ported to MS Windows?  What is the status of the port?

Beginning with release 21.0, XEmacs has worked under MS Windows.  A
group of dedicated developers actively maintains and improves the
Windows-specific portions of the code.  The mailing list at
@email{xemacs-nt@@xemacs.org} is dedicated to that effort (please use
the -request address to subscribe). (Despite its name, XEmacs actually
works on all versions of Windows.)

As of May 2001, XEmacs on MS Windows is stable and full-featured, and
has been so for a year or more -- in fact, some features, such as
printing, actually work better on Windows than native Unix.  However,
the internationalization (Mule) support does not work -- although this
is being actively worked on.


@node Q6.0.2, Q6.0.3, Q6.0.1, MS Windows
@unnumberedsubsec Q6.0.2: What flavors of MS Windows are supported?  The list name implies NT only.

The list name is misleading, as XEmacs supports and has been compiled on
Windows 95, Windows 98, Windows NT, Windows 2000, Windows ME, Windows
XP, and all newer versions of Windows.  The MS Windows-specific code is
based on Microsoft Win32 API, and will not work on MS Windows 3.x or on
MS-DOS.

XEmacs also supports the Cygwin and MinGW development and runtime
environments, where it also uses native Windows code for graphical
features.


@node Q6.0.3, Q6.0.4, Q6.0.2, MS Windows
@unnumberedsubsec Q6.0.3: Are binaries available?

Binaries are available at @uref{http://www.xemacs.org/Download/win32/}
for the native and Cygwin MS Windows versions of 21.4, and the native
version of 21.1.

The 21.4 binaries use a modified version of the Cygwin installer.  Run
the provided @file{setup.exe}, and follow the instructions.


@node Q6.0.4, Q6.0.5, Q6.0.3, MS Windows
@unnumberedsubsec Q6.0.4: Can I build XEmacs on MS Windows with X support?  Do I need to?

Yes, you can, but no you do not need to.  In fact, we recommend that you
use a native-GUI version unless you have a specific need for an X
version.

@node Q6.0.5, Q6.0.6, Q6.0.4, MS Windows
@unnumberedsubsec Q6.0.5: I'd like to help out.  What do I do?

It depends on the knowledge and time you possess.  If you are a
programmer, try to build XEmacs and see if you can improve it.
Windows-specific improvements like integration with established
Windows environments are especially sought after.

Otherwise, you can still help by downloading the binaries, using
XEmacs as your everyday editor and reporting bugs you find to the
mailing list.

Another area where we need help is the documentation: We need good
documentation for building XEmacs and for using it.  This FAQ is a
small step in that direction.

@node Q6.0.6, Q6.0.7, Q6.0.5, MS Windows
@unnumberedsubsec Q6.0.6: What are Cygwin and MinGW, and do I need them to run XEmacs?

To answer the second part of the question: No, you, you don't need
Cygwin or MinGW to build or to run XEmacs.  But if you have them and
want to use them, XEmacs supports these environments.

(One important reason to support Cygwin is that it lets the MS Windows
developers test out their code in a Unix environment without actually
having to have a Unix machine around.  For this reason alone, Cygwin
support is likely to remain supported for a long time in XEmacs.  Same
goes for the X support under Cygwin, for the same reasons.  MinGW
support, on the other hand, depends on volunteers to keep it up to date;
but this is generally not hard.)

Cygwin is a set of tools providing Unix-like API on top of Win32.
It makes it easy to port large Unix programs without significant
changes to their source code.  It is a development environment as well
as a runtime environment.

When built with Cygwin, XEmacs supports all display types -- TTY, X &
Win32 GUI, and can be built with support for all three simultaneously.
If you build with Win32 GUI support then the Cygwin version uses the
majority of the Windows-specific code, which is mostly related to
display.  If you want to build with X support you need X libraries (and
an X server to display XEmacs on); see @ref{Q6.1.4}.  TTY and Win32 GUI
require no additional libraries beyond what comes standard with Cygwin.

The advantages of the Cygwin version are that it integrates well with
the Cygwin environment for existing Cygwin users; uses configure so
building with different features is very easy; and actively supports X &
TTY.  Furthermore, the entire Cygwin environment and compiler are free,
whereas Visual C++ costs money.

The disadvantage is that it requires the whole Cygwin environment,
whereas the native port requires only a suitable MS Windows compiler.
Also, it follows the Unix filesystem and process model very closely
(some will undoubtedly view this as an advantage).

See @uref{http://sources.redhat.com/cygwin/} for more information on
Cygwin.

MinGW is a collection of header files and import libraries that allow
one to use GCC under the Cygwin environment to compile and produce
exactly the same native Win32 programs that you can using Visual C++.
Programs compiled with MinGW make use of the standard Microsoft runtime
library @file{MSVCRT.DLL}, present on all Windows systems, and look,
feel, and act like a standard Visual-C-produced application. (The only
difference is the compiler.) This means that, unlike a
standardly-compiled Cygwin application, no extra runtime support
(e.g. Cygwin's @file{cygwin1.dll}) is required.  This, along with the
fact that GCC is free (and works in a nice Unix-y way in a nice Unix-y
environment, for those die-hard Unix hackers out there), is the main
advantage of MinGW.  It is also potentially faster than Cygwin because
it has less overhead when calling Windows, but you lose the POSIX
emulation layer, which makes Unix programs harder to port. (But this is
irrelevant for XEmacs since it's already ported to Win32.)

See @uref{http://www.mingw.org/} for more information on MinGW.

@node Q6.0.7, Q6.1.1, Q6.0.6, MS Windows
@unnumberedsubsec Q6.0.7: What exactly are all the different ways to build XEmacs under Windows?

XEmacs can be built in several ways in the MS Windows environment.

The standard way is what we call the "native" port.  It uses the Win32
API and has no connection with X whatsoever -- it does not require X
libraries to build, nor does it require an X server to run.  The native
port is the most reliable version and provides the best graphical
support.  Almost all development is geared towards this version, and
there is little reason not to use it.

The second way to build is the Cygwin port.  It takes advantage of
Cygnus emulation library under Win32.  @xref{Q6.0.6}, for more
information.

A third way is the MinGW port.  It uses the Cygwin environment to build
but does not require it at runtime.  @xref{Q6.0.6}, for more
information.

Finally, you might also be able to build the non-Cygwin, non-MinGW "X"
port.  This was actually the first version of XEmacs that ran under MS
Windows, and although the code is still in XEmacs, it's essentially
orphaned and it's unlikely it will compile without a lot of work.  If
you want an MS Windows versin of XEmacs that supports X, use the Cygwin
version. (The X support there is actively maintained, so that Windows
developers can test the X support in XEmacs.)


@node Q6.1.1, Q6.1.2, Q6.0.7, MS Windows
@unnumberedsec 6.1: Building XEmacs on MS Windows
@unnumberedsubsec Q6.1.1: What compiler/libraries do I need to compile XEmacs?

You need Visual C++ 4.2, 5.0, or 6.0 for the native version. (We have
some beta testers currently trying to compile with VC.NET, aka version
7.0, but we can't yet report complete success.) For the Cygwin and MinGW
versions, you need the Cygwin environment, which comes with GCC, the
compiler used for those versions.  @xref{Q6.0.6}, for more information
on Cygwin and MinGW.

@node Q6.1.2, Q6.1.3, Q6.1.1, MS Windows
@unnumberedsubsec Q6.1.2: How do I compile the native port?

Please read the file @file{nt/README} in the XEmacs distribution, which
contains the full description.

@node Q6.1.3, Q6.1.4, Q6.1.2, MS Windows
@unnumberedsubsec Q6.1.3: What do I need for Cygwin?

You can find the Cygwin tools and compiler at:

@uref{http://sources.redhat.com/cygwin/}

Click on the @samp{Install now!} link, which will download a file
@file{setup.exe}, which you can use to download everything else. (You
will need to pick a mirror site; @samp{mirrors.rcn.net} is probably the
best.) You should go ahead and install everything -- you'll get various
ancillary libraries that XEmacs needs or likes, e.g. XPM, PNG, JPEG,
TIFF, etc.

If you want to compile under X, you will also need the X libraries; see
@ref{Q6.1.6}.

If you want to compile without X, you will need the @file{xpm-nox}
library, which must be specifically selected in the Cygwin netinstaller;
it is not selected by default.  The package has had various names.
Currently it is called @file{cygXpm-noX4.dll}.


@node Q6.1.4, Q6.1.5, Q6.1.3, MS Windows
@unnumberedsubsec Q6.1.4: How do I compile under Cygwin?

Similar as on Unix; use the usual `configure' and `make' process.
Some problems to watch out for:

@itemize @bullet
@item
make sure HOME is set. This controls where you
@file{init.el}/@file{.emacs} file comes from;

@item
CYGWIN needs to be set to tty for process support to work, e.g. CYGWIN=tty;

@item
picking up some other grep or other UNIX-like tools can kill configure;

@item
static heap too small, adjust @file{src/sheap-adjust.h} to a more positive
number;

@item
(Unconfirmed) The Cygwin version doesn't understand
@file{//machine/path} type paths so you will need to manually mount a
directory of this form under a unix style directory for a build to work
on the directory;

@item
If you're building @strong{WITHOUT} X11, don't forget to change symlinks
@file{/usr/lib/libXpm.a} and @file{/usr/lib/libXpm.dll.a} to point to
the non-X versions of these libraries.  By default they point to the X
versions.  So:

@example
/usr/lib/libXpm.a     -> /usr/lib/libXpm-noX.a
/usr/lib/libXpm.dll.a -> /usr/lib/libXpm-noX.dll.a
@end example

(This advice may now be obsolete because of the availability of the
cygXpm-noX4.dll package from Cygwin.  Send confirmation to
@email{faq@@xemacs.org}.)

@item
Other problems are listed in the @file{PROBLEMS} file, in the top-level
directory of the XEmacs sources.

@end itemize


@node Q6.1.5, Q6.1.6, Q6.1.4, MS Windows
@unnumberedsubsec Q6.1.5: How do I compile using MinGW (aka @samp{the -mno-cygwin flag to gcc})?

Similar to the method for Unix.  Things to remember:

@itemize @bullet
@item
Specify the target host on the command line for @file{./configure}, e.g.
@samp{./configure i586-pc-mingw32}.

@item
Be sure that your build directory is mounted such that it has the
same path either as a cygwin path (@file{/build/xemacs}) or as a Windows
path (@file{c:\build\xemacs}).

@item
Build @samp{gcc -mno-cygwin} versions of the extra libs, i.e. @file{libpng},
@file{compface}, etc.

@item
Specify the target location of the extra libs on the command line
to @file{configure}, e.g.
@samp{./configure --site-prefixes=/build/libs i586-pc-mingw32}.
@end itemize


@node Q6.1.6, Q6.1.7, Q6.1.5, MS Windows
@unnumberedsubsec Q6.1.6: I decided to run with X.  Where do I get an X server?

As of May 2001, we are recommending that you use the port of XFree86 to
Cygwin.  This has recently stabilized, and will undoubtedly soon make
most other MS Windows X servers obsolete.  It is what the Windows
developers use to test the MS Windows X support.

To install, go to @uref{http://xfree86.cygwin.com/}.  There is a
detailed description on that site of exactly how to install it.  This
installation also provides the libraries, include files, and other stuff
needed for development; a large collection of internationalized fonts;
the standard X utilities (xterm, twm, etc.) -- in a word, the works.

NOTE: As of late May 2001, there is a bug in the file
@file{startxwin.bat}, used to start X Windows.  It passes the option
@samp{-engine -4} to the X server, which is bogus -- you need to edit
the file and change it to @samp{-engine 4}.


@node Q6.1.7, Q6.2.1, Q6.1.6, MS Windows
@unnumberedsubsec Q6.1.7: How do I compile with X support?

To compile under Cygwin, all you need to do is install XFree86
(@pxref{Q6.1.6}).  Once installed, @file{configure} should automatically
find the X libraries and compile with X support.

As noted above, the non-Cygwin X support is basically orphaned, and
probably won't work.  But if it want to try, it's described in
@file{nt/README} in some detail.  Basically, you need to get X11
libraries from ftp.x.org, and compile them.  If the precompiled versions
are available somewhere, we don't know of it.


@node Q6.2.1, Q6.2.2, Q6.1.7, MS Windows
@unnumberedsec 6.2: Customization and User Interface
@unnumberedsubsec Q6.2.1: How does the port cope with differences in the Windows user interface?

The XEmacs (and Emacs in general) user interface is pretty different
from what is expected of a typical MS Windows program.  How does the MS
Windows port cope with it?

As a general rule, we follow native MS Windows conventions as much as
possible.  21.4 is a fairly complete Windows application, supporting
native printing, system file dialog boxes, tool tips, etc.  In cases
where there's a clear UI conflict, we currently use normal Unix XEmacs
behavior by default, but make sure the MS Windows "look and feel" (mark
via shift-arrow, self-inserting deletes region, Alt selects menu items,
etc.) is easily configurable (respectively: using the variable
@code{shifted-motion-keys-select-region} in 21.4 and above [it's in fact
the default in these versions], or the @file{pc-select} package; using
the @file{pending-del} package; and setting the variable
@code{menu-accelerator-enabled} to @code{menu-force} in 21.4 and above).
In fact, if you use the sample @file{init.el} file as your init file,
you will get all these behaviors automatically turned on.

In future versions, some of these features might be turned on by
default in the MS Windows environment.


@node Q6.2.2, Q6.2.3, Q6.2.1, MS Windows
@unnumberedsubsec Q6.2.2: How do I change fonts in XEmacs on MS Windows?

In 21.4 and above, you can use the "Options" menu to change the font.
You can also do it in your init file, e.g. like this:

@display
    (set-face-font 'default "Lucida Console:Regular:10")
    (set-face-font 'modeline "MS Sans Serif:Regular:10")
@end display


@node Q6.2.3, Q6.2.4, Q6.2.2, MS Windows
@unnumberedsubsec Q6.2.3: Where do I put my @file{init.el}/@file{.emacs} file?

@file{init.el} is the name of the init file starting with 21.4, and is
located in the subdirectory @file{.xemacs/} of your home directory.  In
prior versions, the init file is called @file{.emacs} and is located in
your home directory.  Your home directory under Windows is determined by
the @samp{HOME} environment variable.  If this is not set, it defaults to
@samp{C:\}.

To set this variable, modify @file{AUTOEXEC.BAT} under Windows 95/98, or
select @samp{Control Panel->System->Advanced->Environment Variables...}
under Windows NT/2000.


@node Q6.2.4, Q6.2.5, Q6.2.3, MS Windows
@unnumberedsubsec Q6.2.4: How do I get Windows Explorer to associate a file type with XEmacs?

@unnumberedsubsubsec Associating a new file type with XEmacs.

In Explorer select @samp{View/Options/File Types}, press @samp{[New
Type...]} and fill in the dialog box, e.g.:

@example
        Description of type:    Emacs Lisp source
        Associated extension:   el
        Content Type (MIME):    text/plain
@end example

then press @samp{[New...]} and fill in the @samp{Action} dialog box as
follows:

@example
        Action:
        Open

        Application used to perform action:
        D:\Full\path\for\xemacs.exe "%1"

        [x] Use DDE

        DDE Message:
        open("%1")

        Application:
        <leave blank>

        DDE Application Not Running:
        <leave blank>

        Topic:
        <leave blank>
@end example

@unnumberedsubsubsec Associating an existing file type with XEmacs.

In Explorer select @samp{View/Options/File Types}.  Click on the file
type in the list and press @samp{[Edit...]}.  If the file type already
has an @samp{Open} action, double click on it and fill in the
@samp{Action} dialog box as described above; otherwise create a new
action.

If the file type has more than one action listed, you probably want to
make the @samp{Open} action that you just edited the default by clicking on
it and pressing @samp{Set Default}.

Note for Windows 2000 users: Under Windows 2000, get to @samp{File Types}
using @samp{Control Panel->Folder Options->File Types}.


@node Q6.2.5, Q6.3.1, Q6.2.4, MS Windows
@unnumberedsubsec Q6.2.5: Is it possible to print from XEmacs?

As of 21.4, printing works on Windows, using simply @samp{File->Print},
and can be configured with @samp{File->Page Setup}.

Prior to 21.4, there is no built-in support, but there are some clever
hacks out there.  If you know how, please let us know and we'll put it
here.


@node Q6.3.1, Q6.3.2, Q6.2.5, MS Windows
@unnumberedsec 6.3: Miscellaneous
@unnumberedsubsec Q6.3.1: Does XEmacs rename all the @samp{win32-*} symbols to @samp{w32-*}?

In his flavor of Emacs 20, Richard Stallman has renamed all the @samp{win32-*}
symbols to @samp{w32-*}.  Does XEmacs do the same?

We consider such a move counter-productive, thus we do not use the
@samp{w32} prefix. (His rather questionable justification was that he
did not consider Windows to be a "winning" platform.) However, the name
@samp{Win32} is not particularly descriptive outside the Windows world,
and using just @samp{windows-} would be too generic.  So we chose a
compromise, the prefix @samp{mswindows-} for Windows-related variables
and functions.

Thus all the XEmacs variables and functions directly related to either
the Windows GUI or OS are prefixed @samp{mswindows-} (except for a
couple of debugging variables, prefixed @samp{debug-mswindows-}).  From
an architectural perspective, however, we believe that this is mostly a
non-issue because there should be a very small number of
window-systems-specific variables anyway.  Whenever possible, we try to
provide generic interfaces that apply to all window systems.

@c not true:
@c The user variables
@c that share functionality with existing NT Emacs variables are be named
@c with our convention, but we provide the GNU Emacs names as
@c compatibility aliases.


@node Q6.3.2, Q6.3.3, Q6.3.1, MS Windows
@unnumberedsubsec Q6.3.2: What are the differences between the various MS Windows emacsen?

XEmacs, Win-Emacs, DOS Emacs, NT Emacs, this is all very confusing.
Could you briefly explain the differences between them?

Here is a recount of various Emacs versions running on MS Windows:

@itemize @bullet

@item
XEmacs

@itemize @minus

@item
Beginning with XEmacs 19.12, XEmacs' architecture was redesigned
in such a way to allow clean support of multiple window systems.  At
this time the TTY support was added, making X and TTY the first two
"window systems" supported by XEmacs.  The 19.12 design is the basis for
the current native MS Windows code.

@item
Some time during 1997, David Hobley (soon joined by Marc Paquette)
imported some of the NT-specific portions of GNU Emacs, making XEmacs
with X support compile under Windows NT, and creating the "X" port.

@item
Several months later, Jonathan Harris sent out initial patches to use
the Win32 API, thus creating the native port.  Since then, various
people have contributed, including Kirill M. Katsnelson (contributed
support for menubars, subprocesses and network, as well as loads of
other code), Andy Piper (ported XEmacs to Cygwin environment,
contributed Windows unexec, Windows-specific glyphs and toolbars code,
and more), Ben Wing (loads of improvements; primary MS Windows developer
since 2000), Jeff Sparkes (contributed scrollbars support) and many
others.
@end itemize

@item
NT Emacs

@itemize @minus

@item
NT Emacs is a version of GNU Emacs modified to compile and run under MS
Windows 95 and NT using the native Win32 API.  As such, it is close in
spirit to the XEmacs "native" port.

@item
NT Emacs has been written by Geoff Voelker, and more information can be
found at
@iftex
@*
@end iftex
@uref{http://www.gnu.org/software/emacs/windows/ntemacs.html}.
@end itemize

@item
Win-Emacs

@itemize @minus

@item
Win-Emacs was a port of Lucid Emacs 19.6 to MS Windows using X
compatibility libraries.  Win-Emacs was written by Ben Wing.  The MS
Windows code never made it back to Lucid Emacs, and its creator (Pearl
Software) has long since gone out of business.
@end itemize

@item
GNU Emacs for DOS

@itemize @minus

@item
GNU Emacs features support for MS-DOS and DJGPP (D.J. Delorie's DOS
port of GCC).  Such an Emacs is heavily underfeatured, because it does
not support long file names, lacks proper subprocesses support, and
is far too big compared with typical DOS editors.
@end itemize

@item
GNU Emacs compiled with Win32

@itemize @minus

@item
Starting with version 19.30, it has been possible to compile GNU Emacs
under MS Windows using the DJGPP compiler and X libraries.  The result
is very similar to GNU Emacs compiled under MS DOS, only it works
somewhat better because it runs in 32-bit mode, makes use of all the
system memory, supports long file names, etc.
@end itemize

@end itemize


@node Q6.3.3, Q6.3.4, Q6.3.2, MS Windows
@unnumberedsubsec Q6.3.3: XEmacs 21.1 on Windows used to spawn an ugly console window on every startup.  Has that been fixed?

Yes.

The console was there because @file{temacs} (and in turn, @file{xemacs})
was a console application, and Windows typically creates a new
console for a console process unless the creating process requests that
one isn't created.  This used to be fixed with @file{runemacs}, a small
Windows application that existed merely to start @file{xemacs}, stating
that it didn't want a console.

XEmacs 21.4 fixes this cleanly by the virtue of being a true "GUI"
application.  The explanation of what that means is included for
educational value.

When building an application to be run in a Win32 environment, you must
state which sub-system it is to run in.  Valid subsystems include
"console" and "gui".  The subsystem you use affects the run time
libraries linked into your application, the start up function that is
run before control is handed over to your application, the entry point
to your program, and how Windows normally invokes your program. (Console
programs automatically get a console created for them at startup if
their stdin/stdout don't point anywhere useful, which is the case when
run from the GUI.  This is a stupid design, of course -- instead, the
console should get created only when the first I/O actually occurs!
GUI programs have an equally stupid design: When called from
@file{CMD.EXE}/@file{COMMAND.COM}, their stdin/stdout will be set to
point nowhere useful, even though the command shell has its own
stdin/stdout.  It's as if someone who had learned a bit about stdio but
had no actual knowledge of interprocess communication designed the
scheme; unfortunately, the whole process-communication aspect of the
Win32 API is equally badly designed.) For example, the entry point for a
console app is "main" (which is what you'd expect for a C/C++ program),
but the entry point for a "gui" app is "WinMain".  This confuses and
annoys a lot of programmers who've grown up on Unix systems, where the
kernel doesn't really care whether your application is a gui program or
not.

For reasons not altogether clear, and are lost in the mists of time and
tradition, XEmacs on Win32 started out as a console application, and
therefore a console was automatically created for it. (It may have been
made a console application partly because a console is needed in some
circumstances, especially under Win95, to interrupt, terminate, or send
signals to a child process, and because of the bogosity mentioned above
with GUI programs and the standard command shell.  Currently, XEmacs
just creates and immediately hides a console when necessary, and
works around the "no useful stdio" problem by creating its own console
window as necessary to display messages in.)


@node Q6.3.4, Q6.4.1, Q6.3.3, MS Windows
@unnumberedsubsec Q6.3.4: What is the porting team doing at the moment?

(as of June 2001)

The porting team is continuing work on the MS Windows-specific code.
Major projects are the development of Mule (internationalization)
support for Windows and the improvement of the widget support (better
support for dialog boxes, buttons, edit fields, and similar UI
elements).



@node Q6.4.1, Q6.4.2, Q6.3.4, MS Windows
@unnumberedsec 6.3: Troubleshooting
@unnumberedsubsec Q6.4.1 XEmacs won't start on Windows.

XEmacs relies on a process called "dumping" to generate a working
executable. Under MS-Windows this process effectively fixes the memory
addresses of information in the executable. When XEmacs starts up it tries
to reserve these memory addresses so that the dumping process can be
reversed -- putting the information back at the correct addresses.
Unfortunately some .DLLs (for instance the soundblaster driver) occupy
memory addresses that can conflict with those needed by the dumped XEmacs
executable. In this instance XEmacs will fail to start without any
explanation. Note that this is extremely machine specific.

21.1.10 includes a fix for this that makes more intelligent guesses
about which memory addresses will be free, and this should cure the
problem for most people.  21.4 implements "portable dumping", which
eliminates the problem altogether.  We recommend you use the 21.4
binaries, but you can use the 21.1 binaries if you are very paranoid
about stability.  @xref{Q6.0.3}.

@node Q6.4.2, Q6.4.3, Q6.4.1, MS Windows
@unnumberedsubsec Q6.4.2 Why do I get a blank toolbar on Windows 95?

You need at least version 4.71 of the system file @file{comctl32.dll}.
The updated version is supplied with Internet Explorer 4 and later but if
you are avoiding IE you can also download it from the Microsoft web
site.  Go into support and search for @file{comctl32.dll}.  The download
is a self-installing executable.

@node Q6.4.3, , Q6.4.2, MS Windows
@unnumberedsubsec Q6.4.3 XEmacs complains "No such file or directory, diff"

or "ispell" or other commands that seem related to whatever you just
tried to do (M-x ediff or M-$, for example).

There are a large number of common (in the sense that "everyone has
these, they really do") Unix utilities that are not provided with
XEmacs.  The GNU Project's implementations are available for Windows in
the the Cygwin distribution (@uref{http://www.cygwin.com/}), which also
provides a complete Unix emulation environment (and thus makes ports of
Unix utilities nearly trivial).  Another implementation is that from
MinGW (@uref{http://www.mingw.org/msys.shtml}).  If you know of others,
please let us know!



@node Current Events, Legacy Versions, MS Windows, Top
@unnumbered 7 What the Future Holds

This is part 7 of the XEmacs Frequently Asked Questions list.  This
section will change frequently, and (in theory) should contain any
interesting items that have transpired recently. (But in practice it's
not getting updated like this.)

This section also contains descriptions of the new features in all the
recent releases of XEmacs.  For the most part, the information below is
a synopsis of the more complete information that can be found in the
file @file{NEWS} in the @file{etc} directory of the XEmacs distribution.
You can view this file in XEmacs using @kbd{C-h n} or the @samp{Help}
menu.

Information on older versions of XEmacs can be find in @file{ONEWS} in
the same directory, or @file{OONEWS} for really old versions.


@menu
* Q7.0.1::      What new features will be in XEmacs soon?
* Q7.0.2::      What's new in XEmacs 21.4?
* Q7.0.3::      What's new in XEmacs 21.1?
* Q7.0.4::      What's new in XEmacs 20.4?
* Q7.0.5::      What's new in XEmacs 20.3?
* Q7.0.6::      What's new in XEmacs 20.2?
@end menu

@node Q7.0.1, Q7.0.2, Current Events, Current Events
@unnumberedsec 7.0: Changes
@unnumberedsubsec Q7.0.1: What new features will be in XEmacs soon?

Not yet written.

@node Q7.0.2, Q7.0.3, Q7.0.1, Current Events
@unnumberedsubsec Q7.0.2: What's new in XEmacs 21.4?

21.4 was the "stable" version of the 21.2 series, which was considered
"experimental" throughout its life; thus there were no "official"
releases at all.  In essence, XEmacs is now following the "alternating"
scheme of Linux, where at any point there are at least two different
development branches, one "stable" and one "experimental".  Periodic
releases happen in both branches, but those in the experimental branch
are not tested as well, and there's no guarantee they will work at all.
The experiemental branch is open to any and all code that's acceptable
to the developers; the stable branch, however, is in general limited
only to bug fixes, and all contributions are carefully reviewed to make
sure they will increase and not decrease stability.

21.3 never existed at all; it was decided to follow the Linux scheme
exactly, where odd-numbered series are experimental and even-numbered
ones stable.

The following lists summarizes the essential changes made in this
version.  For a fuller list, see the @file{NEWS} in the @file{etc}
directory of the XEmacs distribution, or use @kbd{C-h n} or the
@samp{Help} menu to view this file inside of XEmacs.

@unnumberedsubsubsec User-visible changes in XEmacs 21.4

@itemize @bullet

@item
The delete key now deletes forward by default.
@item
Shifted motion keys now select text by default.
@item
You can now build XEmacs with support for GTK+ widget set.
@item
~/.xemacs/init.el is now the preferred location for the init
file. (XEmacs now supports a `~/.xemacs/init.el' startup file. Custom
file will move to ~/.xemacs/custom.el.)
@item
Much-improved sample init.el, showing how to use many useful features.
@item
XEmacs support for menu accelerators has been much improved.
@item
Default menubar improvements. (Default menubar has many new commands and
better organization.  The font-menu is now available under MS Windows.)
@item
Dialog box improvements, including a real file dialog box. (XEmacs now has a proper file dialog box under MS Windows (and GTK)!  The old clunky file dialog box is improved.  Keyboard traversal now works correctly in MS Windows dialog boxes.  There is a Search dialog box available from Edit->Find...)
@item
New buffer tabs.
@item
There is a new MS Windows installer, netinstall, ported from Cygwin.
@item
The subprocess quote-handling mechanism under Windows is much improved.
@item
Printing support now available under MS Windows.
@item
Selection improvements. (Kill and yank now interact with the clipboard under Windows.  MS Windows support for selection is now much more robust.  Motif selection support is now more correct (but slower).)
@item
Mail spool locking now works correctly.
@item
International support changes. (The default coding-priority-list is now
safer.  International keysyms are now supported under X.  MS Windows
1251 code page now supported.  Czech, Thai, Cyrillic-KOI8, Vietnamese,
Ethiopic now supported.  Proper support for words in Latin 3 and Latin
4.)
@item
Help buffers contain hyperlinks, and other changes.
@item
The modeline's text is now scrollable.
@item
The mouse wheel under MS Windows now functions correctly.
@item
Interactive searching and matching case improvements. (Incremental search will now highlight all visible matches.  Interactive searches always respect uppercase characters.)
@item
Rectangle functions rewritten to avoid inserting extra spaces.
@item
New command `kill-entire-line' that always kills the entire line.
@item
Default values correctly stored in minibuffer histories.
@item
You can now create "indirect buffers", like in GNU Emacs.
@item
Pixel-based scrolling has been implemented.
@item
Operation progress can be displayed using graphical widgets.
@item
User names following a tilde can now be completed at file name prompts.
@item
XEmacs can now play sound using Enlightenment Sound Daemon (ESD).
@item
X-Face support is now available under MS Windows.
@item
The PostgreSQL Relational Database Management System is now supported.
@item
Indentation no longer indents comments that begin at column zero.
@item
Face and variable settings can have comments in Customize.
@item
New locations for early package hierarchies.
@item
The `auto-save' library has been greatly improved.
@item
New variable `mswindows-alt-by-itself-activates-menu'.
@item
Other init-file-related changes. (Init file in your home directory may be called `.emacs.el'.  New command-line switches -user-init-file and -user-init-directory.)
@item
Etags changes.  See @file{NEWS} for full details.
@end itemize

@unnumberedsubsubsec Lisp and internal changes in XEmacs 21.4

Not yet written.

@c APA: Texi2html produces invalid HTML from an empty list of bullets!
@c Please uncomment following list when it does contain bullets.
@c @itemize @bullet
@c @end itemize

@node Q7.0.3, Q7.0.4, Q7.0.2, Current Events
@unnumberedsubsec Q7.0.3: What's new in XEmacs 21.1?

21.1 was the "stable" version of "experimental" 21.0 series.
@xref{Q7.0.2}.

The following lists summarizes the essential changes made in this
version.  For a fuller list, see the @file{NEWS} in the @file{etc}
directory of the XEmacs distribution, or use @kbd{C-h n} or the
@samp{Help} menu to view this file inside of XEmacs.

@unnumberedsubsubsec User-visible changes in XEmacs 21.1

@itemize @bullet

@item
XEmacs is now supported under Microsoft Windows 95/98 and Windows NT
operating systems.  To discuss Windows-specific issues, subscribe to the
mailing list at @email{xemacs-nt-request@@xemacs.org}.

@item
XEmacs has been unbundled into constituent installable packages.

@item
@strong{Other notable changes}: The @samp{Options} menu has been ported to
Custom; XEmacs now is able to choose X visuals and use private
colormaps; You can drag the vertical divider of "horizontally"
(side-by-side) split windows.

@item
@strong{Building changes}: XEmacs can be built with support for 31-bit Lisp
integers and 32-bit pointers (previously, it was 28-bit integers and
pointers); XEmacs can be built with LDAP support; @file{dir} files can be
removed in the Info subsystem, and will be regenerated on-the-fly.

@item
@strong{New packages}: @file{imenu}, @file{popper}, @file{gdb-highlight}

@item
@strong{Package changes}: Many changes to @file{cc-mode}, @file{gnus},
@file{gnuclient}.  See @file{NEWS} for full details.

@item
@strong{New commands, variables and functions}:
@code{center-to-window-line} (like @code{recenter} but doesn't force a
redisplay); variable @code{user-full-name} (customize what your full
name looks like in mail); @kbd{M-x customize-changed-options} (customize
options whose default values changes because you upgraded your XEmacs);
@kbd{M-x add-log-convert} (converts an old-style ChangeLog buffer to
new-style); @kbd{M-x zap-up-to-char} (like @code{zap-to-char} but
doesn't delete the char searched for); commands to store, retrieve and
increment numbers in registers, useful for macros.

@item
@strong{Changes to commands, variables, and functions}: @kbd{M-x
query-replace} and friends operate only on the region when it's active;
@code{echo-keystrokes} can now be a floating-point number; @kbd{M-.}
searches exact tag matches before inexact ones; function
@code{user-full-name} with no arguments returns the var
@code{user-full-name}; a prefix arg to @kbd{M-:} and @kbd{C-h c} inserts
the result in the current buffer.

@item
@strong{Other changes}: Under X, new application class @samp{XEmacs};
byte-compilation of user-specs now works.

@item
@strong{XEmacs/Mule (internationalization) changes}: Mule support now
works on TTY's; Egg/SJ3 input method now officially supported (Quail and
Egg/Skk already available through LEIM since 20.3); localized Japanese
menubars if XEmacs is built with the right support.

@end itemize

@unnumberedsubsubsec Lisp and internal changes in XEmacs 21.1

@itemize @bullet

@item
@strong{Specifier changes}: The window locale now has a higher
precedence than the buffer locale when instantiating; new macro
@code{let-specifier}; new specifiers
@code{vertical-scrollbar-visible-p}, horizontal-scrollbar-visible-p',
@code{scrollbar-on-left-p}, @code{scrollbar-on-top-p},
@code{vertical-divider-always-visible-p},
@code{vertical-divider-shadow-thickness},
@code{vertical-divider-line-width}, @code{vertical-divider-spacing};
specifiers and symbols whose value is a specifier allowed as modeline
specifications.

@item
@strong{Frame focus changes}: @code{focus-follows-mouse} works like FSF,
prevents any attempt to permanently change the selected frame; new
function @code{focus-frame} sets the window system focus a frame; new
special forms @code{save-selected-frame} and @code{with-selected-frame}.

@item
@strong{Window function changes}: @code{select-window} now has optional
argument @var{NORECORD} to inhibit recording a buffer change;
@code{vertical-motion} now correctly handles optional @var{WINDOW}
argument and has new optional argument @var{PIXELS}, to have the
returned values be in pixels; new function
@code{vertical-motion-pixels}; new functions
@code{window-text-area-pixel-@{width,height,edges@}}; new functions
@code{shrink-window-pixels} and @code{enlarge-window-pixels}; new
function @code{window-displayed-text-pixel-height}.

@item
@strong{Other function changes}: Arithmetic comparison functions
@code{<}, @code{>}, @code{=}, @code{/=} now accept a variable number of
arguments; hashtables now have a consistent read/print syntax; keyword
symbols cannot be set to a value other than themselves; @code{concat} no
longer accepts integer arguments; new function @code{string}, like
@code{list}, @code{vector}, etc.; new function @code{temp-directory}
(OS-independent way to get a temp directory); @code{load-average} has
optional argument @var{USE-FLOATS}; @code{make-event} implemented
completely; new function @code{function-interactive} (returns a
function's interactive spec); new functions @code{lmessage},
@code{lwarn} (printf-like versions of @code{display-wessage},
@code{display-warning}); new keyword @code{:version} to
@code{defcustom}.

@item
@strong{Performance}: when the new GNU Malloc aka Doug Lea Malloc is
available, it will be used (better performance on libc6 Linux systems);
tracking line-numbers in modeline is now efficient; profiling records a
call-count of all called functions, retrievable through
@code{profile-call-count-results}.

@item
@strong{Startup and path searching}: code to assemble paths at startup
rewritten for new package system; new function @code{split-path} (splits
by @code{path-separator}); @code{Info-default-directory-list} obsolete,
use @code{Info-directory-list} instead; site-lisp is deprecated and no
longer on the load-path by default.

@end itemize

@node Q7.0.4, Q7.0.5, Q7.0.3, Current Events
@unnumberedsubsec Q7.0.4: What's new in XEmacs 20.4?

XEmacs 20.4 is a bugfix release with no user-visible changes.
@c Filled in from NEWS file of 20.5-b33

@node Q7.0.5, Q7.0.6, Q7.0.4, Current Events
@unnumberedsubsec Q7.0.5: What's new in XEmacs 20.3?

XEmacs 20.3 was released in November 1997. It contains many bugfixes,
and a number of new features, including Autoconf 2 based configuration,
additional support for Mule (Multi-language extensions to Emacs), many
more customizations, multiple frames on TTY-s, support for multiple info
directories, an enhanced gnuclient, improvements to regexp matching,
increased MIME support, and many, many synches with GNU Emacs 20.

The XEmacs/Mule support has been only seriously tested in a Japanese
locale, and no doubt many problems still remain.  The support for
ISO-Latin-1 and Japanese is fairly strong.  MULE support comes at a
price---about a 30% slowdown from 19.16.  We're making progress on
improving performance and XEmacs 20.3 compiled without Mule (which is
the default) is definitely faster than XEmacs 19.16.

XEmacs 20.3 is the first non-beta v20 release, and will be the
basis for all further development.

@node Q7.0.6, , Q7.0.5, Current Events
@unnumberedsubsec Q7.0.6: What's new in XEmacs 20.2?

The biggest changes in 20.2 include integration of EFS (the next
generation of ange-ftp) and AUC Tex (the Emacs subsystem that includes a
major mode for editing Tex and LaTeX, and a lot of other stuff).  Many
bugs from 20.0 have been fixed for this release.  20.2 also contains a
new system for customizing XEmacs options, invoked via @kbd{M-x
customize}.

XEmacs 20.2 is the development release (20.0 was beta), and is no longer
considered unstable.

For older news, see the file @file{ONEWS} in the @file{etc} directory of
the XEmacs distribution.



@node Legacy Versions, , Current Events, Top
@unnumbered 8 New information about old XEmacsen

This is part 8 of the XEmacs Frequently Asked Questions list.  It will
occasionally be updated to reflect new information about versions which
are no longer being revised by the XEmacs Project.  The primary purpose
is advice on compatibility of older XEmacsen with new packages and
updated versions of packages, but bug fixes (which will not be applied
to released XEmacsen, but users can apply themselves) are also accepted.


@menu
* Q8.0.1::      Gnus 5.10 won't display smileys in XEmacs 21.1.
@end menu

@node Q8.0.1, , , Legacy Versions
@unnumberedsubsec Q8.0.1: Gnus 5.10 won't display smileys in XEmacs 21.1.

@email{eeide@@cs.utah.edu, Eric Eide} wrote:

@quotation
Previously I wrote:

    Eric> Summary: with Gnus 5.10.1 in XEmacs 21.1.14, I don't see
    Eric> any smileys :-(.

After a bit of sleuthing, I discovered the essence of the problem.
For me, the form:

@lisp
        (with-temp-buffer
          (insert-file-contents "foo.xpm")
          (buffer-string))
@end lisp

returns the empty string.  This is because something somewhere
replaces the XPM data with a glyph --- I haven't figured out where
this occurs.
@end quotation

@email{kyle_jones@@wonderworks.com, Kyle Jones} replies:

@quotation
Do this:

@lisp
    (setq format-alist nil)
@end lisp

The image-mode stuff is gone from format-alist in the 21.4
branch, praise be.
@end quotation


@bye