-This is ../info/xemacs.info, produced by makeinfo version 4.0 from
+This is ../info/xemacs.info, produced by makeinfo version 4.0b from
xemacs/xemacs.texi.
INFO-DIR-SECTION XEmacs Editor
translation approved by the author instead of in the original English.
\1f
+File: xemacs.info, Node: Specified Dates, Prev: Move to Beginning or End, Up: Calendar Motion
+
+Particular Dates
+................
+
+ Calendar mode provides commands for moving to a particular date
+specified in various ways.
+
+`g d'
+ Move point to specified date (`calendar-goto-date').
+
+`o'
+ Center calendar around specified month (`calendar-other-month').
+
+`.'
+ Move point to today's date (`calendar-goto-today').
+
+ `g d' (`calendar-goto-date') prompts for a year, a month, and a day
+of the month, and then moves to that date. Because the calendar
+includes all dates from the beginning of the current era, you must type
+the year in its entirety; that is, type `1990', not `90'.
+
+ `o' (`calendar-other-month') prompts for a month and year, then
+centers the three-month calendar around that month.
+
+ You can return to today's date with `.' (`calendar-goto-today').
+
+\1f
+File: xemacs.info, Node: Scroll Calendar, Next: Mark and Region, Prev: Calendar Motion, Up: Calendar/Diary
+
+Scrolling the Calendar through Time
+-----------------------------------
+
+ The calendar display scrolls automatically through time when you
+move out of the visible portion. You can also scroll it manually.
+Imagine that the calendar window contains a long strip of paper with
+the months on it. Scrolling it means moving the strip so that new
+months become visible in the window.
+
+`C-x <'
+ Scroll calendar one month forward (`scroll-calendar-left').
+
+`C-x >'
+ Scroll calendar one month backward (`scroll-calendar-right').
+
+`C-v'
+`<NEXT>'
+ Scroll calendar three months forward
+ (`scroll-calendar-left-three-months').
+
+`M-v'
+`<PRIOR>'
+ Scroll calendar three months backward
+ (`scroll-calendar-right-three-months').
+
+ The most basic calendar scroll commands scroll by one month at a
+time. This means that there are two months of overlap between the
+display before the command and the display after. `C-x <' scrolls the
+calendar contents one month to the left; that is, it moves the display
+forward in time. `C-x >' scrolls the contents to the right, which
+moves backwards in time.
+
+ The commands `C-v' and `M-v' scroll the calendar by an entire
+"screenful"--three months--in analogy with the usual meaning of these
+commands. `C-v' makes later dates visible and `M-v' makes earlier
+dates visible. These commands take a numeric argument as a repeat
+count; in particular, since `C-u' multiplies the next command by four,
+typing `C-u C-v' scrolls the calendar forward by a year and typing `C-u
+M-v' scrolls the calendar backward by a year.
+
+ The function keys <NEXT> and <PRIOR> are equivalent to `C-v' and
+`M-v', just as they are in other modes.
+
+\1f
+File: xemacs.info, Node: Mark and Region, Next: General Calendar, Prev: Scroll Calendar, Up: Calendar/Diary
+
+The Mark and the Region
+-----------------------
+
+ The concept of the mark applies to the calendar just as to any other
+buffer, but it marks a _date_, not a _position_ in the buffer. The
+region consists of the days between the mark and point (including the
+starting and stopping dates).
+
+`C-SPC'
+ Set the mark to today's date (`calendar-set-mark').
+
+`C-@'
+ The same.
+
+`C-x C-x'
+ Interchange mark and point (`calendar-exchange-point-and-mark').
+
+`M-='
+ Display the number of days in the current region
+ (`calendar-count-days-region').
+
+ You set the mark in the calendar, as in any other buffer, by using
+`C-@' or `C-SPC' (`calendar-set-mark'). You return to the marked date
+with the command `C-x C-x' (`calendar-exchange-point-and-mark') which
+puts the mark where point was and point where mark was. The calendar
+is scrolled as necessary, if the marked date was not visible on the
+screen. This does not change the extent of the region.
+
+ To determine the number of days in the region, type `M-='
+(`calendar-count-days-region'). The numbers of days printed is
+_inclusive_; that is, it includes the days specified by mark and point.
+
+ The main use of the mark in the calendar is to remember dates that
+you may want to go back to. To make this feature more useful, the mark
+ring (*note Mark Ring::) operates exactly as in other buffers: Emacs
+remembers 16 previous locations of the mark. To return to a marked
+date, type `C-u C-SPC' (or `C-u C-@'); this is the command
+`calendar-set-mark' given a numeric argument. It moves point to where
+the mark was, restores the mark from the ring of former marks, and
+stores the previous point at the end of the mark ring. So, repeated
+use of this command moves point through all the old marks on the ring,
+one by one.
+
+\1f
+File: xemacs.info, Node: General Calendar, Next: LaTeX Calendar, Prev: Mark and Region, Up: Calendar/Diary
+
+Miscellaneous Calendar Commands
+-------------------------------
+
+`p d'
+ Display day-in-year (`calendar-print-day-of-year').
+
+`?'
+ Briefly describe calendar commands (`describe-calendar-mode').
+
+`C-c C-l'
+ Regenerate the calendar window (`redraw-calendar').
+
+`SPC'
+ Scroll the next window (`scroll-other-window').
+
+`q'
+ Exit from calendar (`exit-calendar').
+
+ If you want to know how many days have elapsed since the start of
+the year, or the number of days remaining in the year, type the `p d'
+command (`calendar-print-day-of-year'). This displays both of those
+numbers in the echo area.
+
+ To display a brief description of the calendar commands, type `?'
+(`describe-calendar-mode'). For a fuller description, type `C-h m'.
+
+ You can use `SPC' (`scroll-other-window') to scroll the other
+window. This is handy when you display a list of holidays or diary
+entries in another window.
+
+ If the calendar window text gets corrupted, type `C-c C-l'
+(`redraw-calendar') to redraw it. (This can only happen if you use
+non-Calendar-mode editing commands.)
+
+ In Calendar mode, you can use `SPC' (`scroll-other-window') to
+scroll the other window. This is handy when you display a list of
+holidays or diary entries in another window.
+
+ To exit from the calendar, type `q' (`exit-calendar'). This buries
+all buffers related to the calendar, selecting other buffers. (If a
+frame contains a dedicated calendar window, exiting from the calendar
+iconifies that frame.)
+
+\1f
+File: xemacs.info, Node: LaTeX Calendar, Next: Holidays, Prev: General Calendar, Up: Calendar/Diary
+
+LaTeX Calendar
+==============
+
+ The Calendar LaTeX commands produce a buffer of LaTeX code that
+prints as a calendar. Depending on the command you use, the printed
+calendar covers the day, week, month or year that point is in.
+
+`t m'
+ Generate a one-month calendar (`cal-tex-cursor-month').
+
+`t M'
+ Generate a sideways-printing one-month calendar
+ (`cal-tex-cursor-month-landscape').
+
+`t d'
+ Generate a one-day calendar (`cal-tex-cursor-day').
+
+`t w 1'
+ Generate a one-page calendar for one week (`cal-tex-cursor-week').
+
+`t w 2'
+ Generate a two-page calendar for one week (`cal-tex-cursor-week2').
+
+`t w 3'
+ Generate an ISO-style calendar for one week
+ (`cal-tex-cursor-week-iso').
+
+`t w 4'
+ Generate a calendar for one Monday-starting week
+ (`cal-tex-cursor-week-monday').
+
+`t f w'
+ Generate a Filofax-style two-weeks-at-a-glance calendar
+ (`cal-tex-cursor-filofax-2week').
+
+`t f W'
+ Generate a Filofax-style one-week-at-a-glance calendar
+ (`cal-tex-cursor-filofax-week').
+
+`t y'
+ Generate a calendar for one year (`cal-tex-cursor-year').
+
+`t Y'
+ Generate a sideways-printing calendar for one year
+ (`cal-tex-cursor-year-landscape').
+
+`t f y'
+ Generate a Filofax-style calendar for one year
+ (`cal-tex-cursor-filofax-year').
+
+ Some of these commands print the calendar sideways (in "landscape
+mode"), so it can be wider than it is long. Some of them use Filofax
+paper size (3.75in x 6.75in). All of these commands accept a prefix
+argument which specifies how many days, weeks, months or years to print
+(starting always with the selected one).
+
+ If the variable `cal-tex-holidays' is non-`nil' (the default), then
+the printed calendars show the holidays in `calendar-holidays'. If the
+variable `cal-tex-diary' is non-`nil' (the default is `nil'), diary
+entries are included also (in weekly and monthly calendars only).
+
+\1f
+File: xemacs.info, Node: Holidays, Next: Sunrise/Sunset, Prev: LaTeX Calendar, Up: Calendar/Diary
+
+Holidays
+--------
+
+ The Emacs calendar knows about all major and many minor holidays,
+and can display them.
+
+`h'
+ Display holidays for the selected date
+ (`calendar-cursor-holidays').
+
+`Button2 Holidays'
+ Display any holidays for the date you click on.
+
+`x'
+ Mark holidays in the calendar window (`mark-calendar-holidays').
+
+`u'
+ Unmark calendar window (`calendar-unmark').
+
+`a'
+ List all holidays for the displayed three months in another window
+ (`list-calendar-holidays').
+
+`M-x holidays'
+ List all holidays for three months around today's date in another
+ window.
+
+`M-x list-holidays'
+ List holidays in another window for a specified range of years.
+
+ To see if any holidays fall on a given date, position point on that
+date in the calendar window and use the `h' command. Alternatively,
+click on that date with `Button2' and then choose `Holidays' from the
+menu that appears. Either way, this displays the holidays for that
+date, in the echo area if they fit there, otherwise in a separate
+window.
+
+ To view the distribution of holidays for all the dates shown in the
+calendar, use the `x' command. This displays the dates that are
+holidays in a different face (or places a `*' after these dates, if
+display with multiple faces is not available). The command applies both
+to the currently visible months and to other months that subsequently
+become visible by scrolling. To turn marking off and erase the current
+marks, type `u', which also erases any diary marks (*note Diary::).
+
+ To get even more detailed information, use the `a' command, which
+displays a separate buffer containing a list of all holidays in the
+current three-month range. You can use <SPC> in the calendar window to
+scroll that list.
+
+ The command `M-x holidays' displays the list of holidays for the
+current month and the preceding and succeeding months; this works even
+if you don't have a calendar window. If you want the list of holidays
+centered around a different month, use `C-u M-x holidays', which
+prompts for the month and year.
+
+ The holidays known to Emacs include United States holidays and the
+major Christian, Jewish, and Islamic holidays; also the solstices and
+equinoxes.
+
+ The command `M-x list-holidays' displays the list of holidays for a
+range of years. This function asks you for the starting and stopping
+years, and allows you to choose all the holidays or one of several
+categories of holidays. You can use this command even if you don't have
+a calendar window.
+
+ The dates used by Emacs for holidays are based on _current
+practice_, not historical fact. Historically, for instance, the start
+of daylight savings time and even its existence have varied from year to
+year, but present United States law mandates that daylight savings time
+begins on the first Sunday in April. When the daylight savings rules
+are set up for the United States, Emacs always uses the present
+definition, even though it is wrong for some prior years.
+
+\1f
File: xemacs.info, Node: Sunrise/Sunset, Next: Lunar Phases, Prev: Holidays, Up: Calendar/Diary
Times of Sunrise and Sunset
A similar normal hook, `today-invisible-calendar-hook' is run if the
current date is _not_ visible in the window.
-\1f
-File: xemacs.info, Node: Holiday Customizing, Next: Date Display Format, Prev: Calendar Customizing, Up: Calendar Customization
-
-Customizing the Holidays
-........................
-
- Emacs knows about holidays defined by entries on one of several
-lists. You can customize these lists of holidays to your own needs,
-adding or deleting holidays. The lists of holidays that Emacs uses are
-for general holidays (`general-holidays'), local holidays
-(`local-holidays'), Christian holidays (`christian-holidays'), Hebrew
-(Jewish) holidays (`hebrew-holidays'), Islamic (Moslem) holidays
-(`islamic-holidays'), and other holidays (`other-holidays').
-
- The general holidays are, by default, holidays common throughout the
-United States. To eliminate these holidays, set `general-holidays' to
-`nil'.
-
- There are no default local holidays (but sites may supply some). You
-can set the variable `local-holidays' to any list of holidays, as
-described below.
-
- By default, Emacs does not include all the holidays of the religions
-that it knows, only those commonly found in secular calendars. For a
-more extensive collection of religious holidays, you can set any (or
-all) of the variables `all-christian-calendar-holidays',
-`all-hebrew-calendar-holidays', or `all-islamic-calendar-holidays' to
-`t'. If you want to eliminate the religious holidays, set any or all
-of the corresponding variables `christian-holidays', `hebrew-holidays',
-and `islamic-holidays' to `nil'.
-
- You can set the variable `other-holidays' to any list of holidays.
-This list, normally empty, is intended for individual use.
-
- Each of the lists (`general-holidays', `local-holidays',
-`christian-holidays', `hebrew-holidays', `islamic-holidays', and
-`other-holidays') is a list of "holiday forms", each holiday form
-describing a holiday (or sometimes a list of holidays).
-
- Here is a table of the possible kinds of holiday form. Day numbers
-and month numbers count starting from 1, but "dayname" numbers count
-Sunday as 0. The element STRING is always the name of the holiday, as
-a string.
-
-`(holiday-fixed MONTH DAY STRING)'
- A fixed date on the Gregorian calendar. MONTH and DAY are
- numbers, STRING is the name of the holiday.
-
-`(holiday-float MONTH DAYNAME K STRING)'
- The Kth DAYNAME in MONTH on the Gregorian calendar (DAYNAME=0 for
- Sunday, and so on); negative K means count back from the end of
- the month. STRING is the name of the holiday.
-
-`(holiday-hebrew MONTH DAY STRING)'
- A fixed date on the Hebrew calendar. MONTH and DAY are numbers,
- STRING is the name of the holiday.
-
-`(holiday-islamic MONTH DAY STRING)'
- A fixed date on the Islamic calendar. MONTH and DAY are numbers,
- STRING is the name of the holiday.
-
-`(holiday-julian MONTH DAY STRING)'
- A fixed date on the Julian calendar. MONTH and DAY are numbers,
- STRING is the name of the holiday.
-
-`(holiday-sexp SEXP STRING)'
- A date calculated by the Lisp expression SEXP. The expression
- should use the variable `year' to compute and return the date of a
- holiday, or `nil' if the holiday doesn't happen this year. The
- value of SEXP must represent the date as a list of the form
- `(MONTH DAY YEAR)'. STRING is the name of the holiday.
-
-`(if CONDITION HOLIDAY-FORM &optional HOLIDAY-FORM)'
- A holiday that happens only if CONDITION is true.
-
-`(FUNCTION [ARGS])'
- A list of dates calculated by the function FUNCTION, called with
- arguments ARGS.
-
- For example, suppose you want to add Bastille Day, celebrated in
-France on July 14. You can do this by adding the following line to
-your init file:
-
- (setq other-holidays '((holiday-fixed 7 14 "Bastille Day")))
-
- *Note Init File::.
-
-The holiday form `(holiday-fixed 7 14 "Bastille Day")' specifies the
-fourteenth day of the seventh month (July).
-
- Many holidays occur on a specific day of the week, at a specific time
-of month. Here is a holiday form describing Hurricane Supplication Day,
-celebrated in the Virgin Islands on the fourth Monday in August:
-
- (holiday-float 8 1 4 "Hurricane Supplication Day")
-
-Here the 8 specifies August, the 1 specifies Monday (Sunday is 0,
-Tuesday is 2, and so on), and the 4 specifies the fourth occurrence in
-the month (1 specifies the first occurrence, 2 the second occurrence,
--1 the last occurrence, -2 the second-to-last occurrence, and so on).
-
- You can specify holidays that occur on fixed days of the Hebrew,
-Islamic, and Julian calendars too. For example,
-
- (setq other-holidays
- '((holiday-hebrew 10 2 "Last day of Hanukkah")
- (holiday-islamic 3 12 "Mohammed's Birthday")
- (holiday-julian 4 2 "Jefferson's Birthday")))
-
-adds the last day of Hanukkah (since the Hebrew months are numbered with
-1 starting from Nisan), the Islamic feast celebrating Mohammed's
-birthday (since the Islamic months are numbered from 1 starting with
-Muharram), and Thomas Jefferson's birthday, which is 2 April 1743 on the
-Julian calendar.
-
- To include a holiday conditionally, use either Emacs Lisp's `if' or
-the `holiday-sexp' form. For example, American presidential elections
-occur on the first Tuesday after the first Monday in November of years
-divisible by 4:
-
- (holiday-sexp (if (= 0 (% year 4))
- (calendar-gregorian-from-absolute
- (1+ (calendar-dayname-on-or-before
- 1 (+ 6 (calendar-absolute-from-gregorian
- (list 11 1 year))))))
- "US Presidential Election"))
-
-or
-
- (if (= 0 (% displayed-year 4))
- (fixed 11
- (extract-calendar-day
- (calendar-gregorian-from-absolute
- (1+ (calendar-dayname-on-or-before
- 1 (+ 6 (calendar-absolute-from-gregorian
- (list 11 1 displayed-year)))))))
- "US Presidential Election"))
-
- Some holidays just don't fit into any of these forms because special
-calculations are involved in their determination. In such cases you
-must write a Lisp function to do the calculation. To include eclipses,
-for example, add `(eclipses)' to `other-holidays' and write an Emacs
-Lisp function `eclipses' that returns a (possibly empty) list of the
-relevant Gregorian dates among the range visible in the calendar
-window, with descriptive strings, like this:
-
- (((6 27 1991) "Lunar Eclipse") ((7 11 1991) "Solar Eclipse") ... )
-
-\1f
-File: xemacs.info, Node: Date Display Format, Next: Time Display Format, Prev: Holiday Customizing, Up: Calendar Customization
-
-Date Display Format
-...................
-
- You can customize the manner of displaying dates in the diary, in
-mode lines, and in messages by setting `calendar-date-display-form'.
-This variable holds a list of expressions that can involve the variables
-`month', `day', and `year', which are all numbers in string form, and
-`monthname' and `dayname', which are both alphabetic strings. In the
-American style, the default value of this list is as follows:
-
- ((if dayname (concat dayname ", ")) monthname " " day ", " year)
-
-while in the European style this value is the default:
-
- ((if dayname (concat dayname ", ")) day " " monthname " " year)
-
- + The ISO standard date representation is this:
-
- (year "-" month "-" day)
-
-This specifies a typical American format:
-
- (month "/" day "/" (substring year -2))
-
-\1f
-File: xemacs.info, Node: Time Display Format, Next: Daylight Savings, Prev: Date Display Format, Up: Calendar Customization
-
-Time Display Format
-...................
-
- The calendar and diary by default display times of day in the
-conventional American style with the hours from 1 through 12, minutes,
-and either `am' or `pm'. If you prefer the European style, also known
-in the US as military, in which the hours go from 00 to 23, you can
-alter the variable `calendar-time-display-form'. This variable is a
-list of expressions that can involve the variables `12-hours',
-`24-hours', and `minutes', which are all numbers in string form, and
-`am-pm' and `time-zone', which are both alphabetic strings. The
-default value of `calendar-time-display-form' is as follows:
-
- (12-hours ":" minutes am-pm
- (if time-zone " (") time-zone (if time-zone ")"))
-
-Here is a value that provides European style times:
-
- (24-hours ":" minutes
- (if time-zone " (") time-zone (if time-zone ")"))
-
-gives military-style times like `21:07 (UT)' if time zone names are
-defined, and times like `21:07' if they are not.
-
-\1f
-File: xemacs.info, Node: Daylight Savings, Next: Diary Customizing, Prev: Time Display Format, Up: Calendar Customization
-
-Daylight Savings Time
-.....................
-
- Emacs understands the difference between standard time and daylight
-savings time--the times given for sunrise, sunset, solstices,
-equinoxes, and the phases of the moon take that into account. The rules
-for daylight savings time vary from place to place and have also varied
-historically from year to year. To do the job properly, Emacs needs to
-know which rules to use.
-
- Some operating systems keep track of the rules that apply to the
-place where you are; on these systems, Emacs gets the information it
-needs from the system automatically. If some or all of this
-information is missing, Emacs fills in the gaps with the rules
-currently used in Cambridge, Massachusetts. If the resulting rules are
-not what you want, you can tell Emacs the rules to use by setting
-certain variables.
-
- If the default choice of rules is not appropriate for your location,
-you can tell Emacs the rules to use by setting the variables
-`calendar-daylight-savings-starts' and
-`calendar-daylight-savings-ends'. Their values should be Lisp
-expressions that refer to the variable `year', and evaluate to the
-Gregorian date on which daylight savings time starts or (respectively)
-ends, in the form of a list `(MONTH DAY YEAR)'. The values should be
-`nil' if your area does not use daylight savings time.
-
- Emacs uses these expressions to determine the starting date of
-daylight savings time for the holiday list and for correcting times of
-day in the solar and lunar calculations.
-
- The values for Cambridge, Massachusetts are as follows:
-
- (calendar-nth-named-day 1 0 4 year)
- (calendar-nth-named-day -1 0 10 year)
-
-That is, the first 0th day (Sunday) of the fourth month (April) in the
-year specified by `year', and the last Sunday of the tenth month
-(October) of that year. If daylight savings time were changed to start
-on October 1, you would set `calendar-daylight-savings-starts' to this:
-
- (list 10 1 year)
-
- For a more complex example, suppose daylight savings time begins on
-the first of Nisan on the Hebrew calendar. You should set
-`calendar-daylight-savings-starts' to this value:
-
- (calendar-gregorian-from-absolute
- (calendar-absolute-from-hebrew
- (list 1 1 (+ year 3760))))
-
-because Nisan is the first month in the Hebrew calendar and the Hebrew
-year differs from the Gregorian year by 3760 at Nisan.
-
- If there is no daylight savings time at your location, or if you want
-all times in standard time, set `calendar-daylight-savings-starts' and
-`calendar-daylight-savings-ends' to `nil'.
-
- The variable `calendar-daylight-time-offset' specifies the
-difference between daylight savings time and standard time, measured in
-minutes. The value for Cambridge, Massachusetts is 60.
-
- The two variables `calendar-daylight-savings-starts-time' and
-`calendar-daylight-savings-ends-time' specify the number of minutes
-after midnight local time when the transition to and from daylight
-savings time should occur. For Cambridge, Massachusetts both variables'
-values are 120.
-
projects / chise / xemacs-chise.git / blobdiff