-This is Info file ../info/xemacs-faq.info, produced by Makeinfo version
-1.68 from the input file xemacs-faq.texi.
+This is ../info/xemacs-faq.info, produced by makeinfo version 4.0 from
+xemacs-faq.texi.
INFO-DIR-SECTION XEmacs Editor
START-INFO-DIR-ENTRY
END-INFO-DIR-ENTRY
\1f
-File: xemacs-faq.info, Node: Q3.10.1, Next: Q3.10.2, Prev: Q3.9.4, Up: Customization
-
-3.10: Text Selections
-=====================
-
-Q3.10.1: How can I turn off or change highlighted selections?
--------------------------------------------------------------
-
- The `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 `.emacs' file:
-
- (setq zmacs-regions nil)
-
- Starting with XEmacs-20.2 you can also change this with Customize.
-Select from the `Options' menu `Customize->Emacs->Editing->Basics->Zmacs
-Regions' or type `M-x customize <RET> editing-basics <RET>'.
-
- To change the face for selection, look at `Options->Customize' on
-the menubar.
-
-\1f
-File: xemacs-faq.info, Node: Q3.10.2, Next: Q3.10.3, Prev: Q3.10.1, Up: Customization
-
-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 "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 line to your `.emacs':
-
- (turn-on-pending-delete)
-
- Note that this will work with both Backspace and Delete.
-
-\1f
-File: xemacs-faq.info, Node: Q3.10.3, Next: Q3.10.4, Prev: Q3.10.2, Up: Customization
-
-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 `.emacs':
-
- (setq isearch-highlight nil)
-
- Starting with XEmacs-20.2 you can also change this with Customize.
-Type `M-x customize-variable <RET> isearch-highlight <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 `isearch' face.
-
-\1f
-File: xemacs-faq.info, Node: Q3.10.4, Next: Q3.10.5, Prev: Q3.10.3, Up: Customization
-
-Q3.10.4: How do I turn off highlighting after `C-x C-p' (mark-page)?
---------------------------------------------------------------------
-
- Put this in your `.emacs':
-
- (setq zmacs-regions nil)
-
- *Warning: This command turns off all region highlighting.*
-
- Also *Note Q3.10.1::.
-
-\1f
-File: xemacs-faq.info, Node: Q3.10.5, Prev: Q3.10.4, Up: Customization
-
-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:
-
- (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)))
-
- Thanks to T. V. Raman <raman@adobe.com> for assistance in deriving
-this answer.
-
-\1f
-File: xemacs-faq.info, Node: Subsystems, Next: Miscellaneous, Prev: Customization, Up: Top
-
-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 `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
-
-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:: Byte compiling AUC TeX on XEmacs 19.14
-* 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?
-
-\1f
-File: xemacs-faq.info, Node: Q4.0.1, Next: Q4.0.2, Prev: Subsystems, Up: Subsystems
-
-4.0: Reading Mail with VM
-=========================
-
-Q4.0.1: How do I set up VM to retrieve mail from a remote site using POP?
--------------------------------------------------------------------------
-
- Use `vm-spool-files', like this for example:
-
- (setq vm-spool-files '("/var/spool/mail/wing"
- "netcom23.netcom.com:110:pass:wing:MYPASS"))
-
- Of course substitute your actual password for MYPASS.
-
-\1f
-File: xemacs-faq.info, Node: Q4.0.2, Next: Q4.0.3, Prev: Q4.0.1, Up: Subsystems
-
-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
-`ftp://ftp.informatik.rwth-aachen.de/pub/packages/procmail/'.
-
- Also see the Mail Filtering FAQ at:
-`ftp://rtfm.mit.edu/pub/usenet/news.answers/mail/filtering-faq'.
-
-\1f
-File: xemacs-faq.info, Node: Q4.0.3, Next: Q4.0.4, Prev: Q4.0.2, Up: Subsystems
-
-Q4.0.3: How can I get VM to automatically check for new mail?
--------------------------------------------------------------
-
- John Turner <turner@lanl.gov> writes:
-
- Use the following:
-
- (setq vm-auto-get-new-mail 60)
-
-\1f
-File: xemacs-faq.info, Node: Q4.0.4, Next: Q4.0.5, Prev: Q4.0.3, Up: Subsystems
-
-Q4.0.4: [This question intentionally left blank]
-------------------------------------------------
-
- Obsolete question, left blank to avoid renumbering.
-
-\1f
-File: xemacs-faq.info, Node: Q4.0.5, Next: Q4.0.6, Prev: Q4.0.4, Up: Subsystems
-
-Q4.0.5: How do I get my outgoing mail archived?
------------------------------------------------
-
- (setq mail-archive-file-name "~/outbox")
-
-\1f
File: xemacs-faq.info, Node: Q4.0.6, Next: Q4.0.7, Prev: Q4.0.5, Up: Subsystems
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"?
(setq vm-reply-ignored-addresses
'("wing@nuspl@nvwls.cc.purdue.edu,netcom[0-9]*.netcom.com"
- "wing@netcom.com" "wing@666.com"))
+ "wing@netcom.com" "wing@xemacs.org"))
Note that each string is a regular expression.
directory of the lisp library.
`vm-vars.el' contains, initializes and carefully describes, with
- examples of usage, the plethora of user options that *fully*
+ examples of usage, the plethora of user options that _fully_
control VM's behavior.
Enter vm-vars, `forward-search' for toolbar, find the variables
--------------------------------------------------------------------------------
The Gnus numbering issues are not meant for mere mortals to know
-them. If you feel you *must* enter the muddy waters of Gnus, visit the
+them. If you feel you _must_ enter the muddy waters of Gnus, visit the
excellent FAQ, maintained by Justin Sheehy, at:
`http://www.ccs.neu.edu/software/contrib/gnus/'
* MIME extenders for mh-e, GNUS, RMAIL and VM.
tm is available from following anonymous ftp sites:
- * `ftp://ftp.jaist.ac.jp/pub/GNU/elisp/mime/' (Japan).
-
- * `ftp://ftp.nis.co.jp/pub/gnu/emacs-lisp/tm/' (Japan).
-
- * `ftp://ftp.nisiq.net/pub/gnu/emacs-lisp/tm/' (US).
-
- * `ftp://ftp.miranova.com/pub/gnus/jaist.ac.jp/' (US).
-
* `ftp://ftp.unicamp.br/pub/mail/mime/tm/' (Brasil).
* `ftp://ftp.th-darmstadt.de/pub/editors/GNU-Emacs/lisp/mime/'
Q4.3.3: Why isn't this `movemail' program working?
--------------------------------------------------
- Ben Wing <ben@666.com> writes:
+ Ben Wing <ben@xemacs.org> writes:
It wasn't chown'ed/chmod'd correctly.
Q4.3.4: Movemail is also distributed by Netscape? Can that cause problems?
---------------------------------------------------------------------------
- Steve Baur <steve@altair.xemacs.org> writes:
+ Steve Baur <steve@xemacs.org> writes:
Yes. Always use the movemail installed with your XEmacs. Failure
to do so can result in lost mail.
- Please refer to Jamie Zawinski's <jwz@netscape.com> notes at
+ Please refer to Jamie Zawinski's <jwz@jwz.org> notes at
`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
`ftp://ftp.cdrom.com/pub/tex/ctan/support/latex2html/'.
\1f
-File: xemacs-faq.info, Node: Q4.4.1, Next: Q4.5.1, Prev: Q4.3.5, Up: Subsystems
+File: xemacs-faq.info, Node: Q4.4.1, Next: Q4.4.2, Prev: Q4.3.5, Up: Subsystems
4.4: Sparcworks, EOS, and WorkShop
==================================
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
+ `http://www.sun.com/software/Products/Developer-products'.
+\1f
+File: xemacs-faq.info, Node: Q4.4.2, Next: Q4.5.1, Prev: Q4.4.1, Up: Subsystems
+Q4.4.2: How do I start the Sun Workshop support in XEmacs 21?
+-------------------------------------------------------------
-
-
-
-
- `http://www.sun.com/software/Products/Developer-products/programs.html'.
+ 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):
+
+ (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))
+
+ If you are not using the latest Workshop (5.0) you have to apply the
+following patch:
+
+--- /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))
\1f
-File: xemacs-faq.info, Node: Q4.5.1, Next: Q4.6.1, Prev: Q4.4.1, Up: Subsystems
+File: xemacs-faq.info, Node: Q4.5.1, Next: Q4.6.1, Prev: Q4.4.2, Up: Subsystems
4.5: Energize
=============
\1f
File: xemacs-faq.info, Node: Q4.7.3, Next: Q4.7.4, Prev: Q4.7.2, Up: Subsystems
-Q4.7.3: Byte compiling AUC TeX on XEmacs 19.14.
------------------------------------------------
-
- Georges Brun-Cottan <bruncott@dormeur.inria.fr> writes:
-
- When byte compiling auctex-9.4g, you must use the command:
-
- xemacs -batch -l lpath.el
+Q4.7.3: [This question intentionally left blank]
+------------------------------------------------
\1f
File: xemacs-faq.info, Node: Q4.7.4, Next: Q4.7.5, Prev: Q4.7.3, Up: Subsystems
Q4.7.5: Is there a MatLab mode?
-------------------------------
- Is there any way I can get syntax highlighting for MatLab .m files?
-Can I "teach" emacs what words are MatLab commands, comments, etc. ?
-
- Ulrich Elsner <elsner@mathematik.tu-chemnitz.de> writes:
- One way to do this (and much more) is by using the
- matlab mode
- (ftp://ftp.mathworks.com/pub/contrib/v5/tools/matlab.el).
-
- Instructions on how to install this mode are included in this file.
+ Yes, a matlab mode and other items are available at the MathWorks'
+emacs_add_ons ftp directory
+(ftp://ftp.mathworks.com/pub/contrib/emacs_add_ons).
\1f
-File: xemacs-faq.info, Node: Miscellaneous, Next: Current Events, Prev: Subsystems, Up: Top
+File: xemacs-faq.info, Node: Miscellaneous, Next: MS Windows, Prev: Subsystems, Up: Top
5 The Miscellaneous Stuff
*************************
* 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:: Filladapt doesn't work in 19.15?
+* Q5.0.11:: How do I turn on filladapt for all buffers?
* 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:: I upgraded to XEmacs 19.14 and gnuserv stopped working
+* 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?
* Q5.3.1:: How do you make XEmacs indent CL if-clauses correctly?
* Q5.3.2:: Fontifying hangs when editing a postscript file.
* Q5.3.3:: How can I print WYSIWYG a font-locked buffer?
-* Q5.3.4:: Getting `M-x lpr' to work with postscript printer.
+* Q5.3.4:: Getting 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?
You can customize filling and adaptive filling with Customize.
Select from the `Options' menu
-`Customize->Emacs->->Editing->Fill->Fill...' or type `M-x customize
+`Customize->Emacs->->Editing->Fill->Fill...' or type `M-x customize
<RET> fill <RET>'.
Note that well-behaving text-lookalike modes will run
\1f
File: xemacs-faq.info, Node: Q5.0.11, Next: Q5.0.12, Prev: Q5.0.10, Up: Miscellaneous
-Q5.0.11: Filladapt doesn't work in 19.15
-----------------------------------------
+Q5.0.11: How do I turn on filladapt for all buffers?
+----------------------------------------------------
- Filladapt 2.x is included in 19.15. In it filladapt is now a minor
-mode and minor modes are traditionally off by default. The following
-added to your `.emacs' will turn it on for all buffers:
+ Filladapt is a minor mode and minor modes are traditionally off by
+default. The following added to your `.emacs' will turn it on for all
+buffers:
(setq-default filladapt-mode t)
Barry A. Warsaw <bwarsaw@cnri.reston.va.us> writes:
- This can be had from `http://www.python.org/ftp/emacs/'.
+ This can be had from `http://www.python.org/emacs/'.
\1f
File: xemacs-faq.info, Node: Q5.0.16, Next: Q5.0.17, Prev: Q5.0.15, Up: Miscellaneous
\1f
File: xemacs-faq.info, Node: Q5.0.18, Next: Q5.0.19, Prev: Q5.0.17, Up: Miscellaneous
-Q5.0.18: I upgraded to XEmacs 19.14 and gnuserv stopped working.
-----------------------------------------------------------------
-
- Mark Daku <daku@nortel.ca> writes:
-
- It turns out I was using an older version of gnuserv. The
- installation didn't put the binary into the public bin directory.
- It put it in `lib/xemacs-19.14/hppa1.1-hp-hpux9.05/gnuserv'.
- Shouldn't it have been put in `bin/hppa1.1-hp-hpux9.0'?
+Q5.0.18: [This question intentionally left blank]
+-------------------------------------------------
\1f
File: xemacs-faq.info, Node: Q5.0.19, Next: Q5.0.20, Prev: Q5.0.18, Up: Miscellaneous
The standard TeX modes leave much to be desired, and are somewhat
leniently maintained. Serious TeX users use AUC TeX (*note
- Q4.7.1::.).
+ Q4.7.1::).
+
+\1f
+File: xemacs-faq.info, Node: Q5.0.20, Next: Q5.1.1, Prev: Q5.0.19, Up: Miscellaneous
+
+Q5.0.20: Is there a way to start a new XEmacs if there's no gnuserv running, and otherwise use gnuclient?
+---------------------------------------------------------------------------------------------------------
+
+ Jan Vroonhof <vroonhof@math.ethz.ch> writes:
+ Here is one of the solutions, we have this in a script called
+ `etc/editclient.sh'.
+ #!/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
+
+ Note that there is a known problem when running XEmacs and
+ 'gnuclient -nw' on the same TTY.
+
+\1f
+File: xemacs-faq.info, Node: Q5.1.1, Next: Q5.1.2, Prev: Q5.0.20, Up: Miscellaneous
+
+5.1: Emacs Lisp Programming Techniques
+======================================
+
+Q5.1.1: What is the difference in key sequences between XEmacs and GNU Emacs?
+-----------------------------------------------------------------------------
+
+ Erik Naggum <clerik@naggum.no> writes;
+
+ 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
+ `M-C-a', you would say `[(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
+ `\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 `[(meta control A)]' differs from
+ `[(meta control a)]' because the case differs, `\M-\C-a' and
+ `\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.
+
+ Another (even safer) way to be sure of the key-sequences is to use
+the `read-kbd-macro' function, which takes a string like `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.
+
+\1f
+File: xemacs-faq.info, Node: Q5.1.2, Next: Q5.1.3, Prev: Q5.1.1, Up: Miscellaneous
+
+Q5.1.2: Can I generate "fake" keyboard events?
+----------------------------------------------
+
+ I wonder if there is an interactive function that can generate
+"fake" keyboard events. This way, I could simply map them inside
+XEmacs.
+
+ This seems to work:
+
+ (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)))
+
+\1f
+File: xemacs-faq.info, Node: Q5.1.3, Next: Q5.1.4, Prev: Q5.1.2, Up: Miscellaneous
+
+Q5.1.3: Could you explain `read-kbd-macro' in more detail?
+----------------------------------------------------------
+
+ The `read-kbd-macro' function returns the internal Emacs
+representation of a human-readable string (which is its argument).
+Thus:
+
+ (read-kbd-macro "C-c C-a")
+ => [(control ?c) (control ?a)]
+
+ (read-kbd-macro "C-c C-. <up>")
+ => [(control ?c) (control ?.) up]
+
+ In GNU Emacs the same forms will be evaluated to what GNU Emacs
+understands internally--the sequences `"\C-x\C-c"' and `[3 67108910
+up]', respectively.
+
+ The exact "human-readable" syntax is defined in the docstring of
+`edmacro-mode'. I'll repeat it here, for completeness.
+
+ Format of keyboard macros during editing:
+
+ Text is divided into "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
+ `foo <SPC> bar <RET>'.
+
+ * The special words `RET', `SPC', `TAB', `DEL', `LFD', `ESC',
+ and `NUL' represent special control characters. The words
+ must be written in uppercase.
+
+ * A word in angle brackets, e.g., `<return>', `<down>', or
+ `<f1>', represents a function key. (Note that in the standard
+ configuration, the function key `<return>' and the control key
+ <RET> are synonymous.) You can use angle brackets on the
+ words <RET>, <SPC>, etc., but they are not required there.
+
+ * Keys can be written by their ASCII code, using a backslash
+ followed by up to six octal digits. This is the only way to
+ represent keys with codes above \377.
+
+ * One or more prefixes `M-' (meta), `C-' (control), `S-'
+ (shift), `A-' (alt), `H-' (hyper), and `s-' (super) may
+ precede a character or key notation. For function keys, the
+ prefixes may go inside or outside of the brackets: `C-<down>'
+ == `<C-down>'. The prefixes may be written in any order:
+ `M-C-x' == `C-M-x'.
+
+ Prefixes are not allowed on multi-key words, e.g., `C-abc',
+ except that the Meta prefix is allowed on a sequence of
+ digits and optional minus sign: `M--123' == `M-- M-1 M-2 M-3'.
+
+ * The `^' notation for control characters also works: `^M' ==
+ `C-m'.
+
+ * Double angle brackets enclose command names: `<<next-line>>'
+ is shorthand for `M-x next-line <RET>'.
+
+ * Finally, `REM' or `;;' causes the rest of the line to be
+ ignored as a comment.
+
+ Any word may be prefixed by a multiplier in the form of a decimal
+ number and `*': `3*<right>' == `<right> <right> <right>', and
+ `10*foo' == `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: `; ; ;' is a keyboard macro with three
+ semicolons, but `;;;' is a comment. Likewise, `\ 1 2 3' is four
+ keys but `\123' is a single key written in octal, and `< right >'
+ is seven keys but `<right>' is a single function key. When in
+ doubt, use whitespace.
+
+\1f
+File: xemacs-faq.info, Node: Q5.1.4, Next: Q5.1.5, Prev: Q5.1.3, Up: Miscellaneous
+
+Q5.1.4: What is the performance hit of `let'?
+---------------------------------------------
+
+ In most cases, not noticeable. Besides, there's no avoiding
+`let'--you have to bind your local variables, after all. Some pose a
+question whether to nest `let's, or use one `let' per function. I
+think because of clarity and maintenance (and possible future
+implementation), `let'-s should be used (nested) in a way to provide
+the clearest code.
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