Compose(5)							File Formats Manual							Compose(5)

NAME

       Compose - X client mappings for multi-key input sequences

DESCRIPTION

       The  X  library, libX11, provides a simple input method for characters beyond those represented on typical keyboards using sequences of key
       strokes that are combined to enter a single character.

       The compose file is searched for in  the following order:

       -      If the environment variable $XCOMPOSEFILE is set, its value is used as the name of the Compose file.

       -      If the user's home directory has a file named .XCompose, it is used as the Compose file.

       -      The system provided compose file is used by mapping the locale to a compose file from the list in /usr/share/X11/locale/compose.dir.

       Compose files can use an "include" instruction.	This allows local modifications to be made to existing compose files without including all
       of the content directly.  For example, the system's iso8859-1 compose file can be included with a line like this:
	   include "%S/iso8859-1/Compose"

       There are several substitutions that can be made in the file name of the include instruction:

       %H  expands to the user's home directory (the $HOME environment variable)

       %L  expands to the name of the locale specific Compose file (i.e., "/usr/share/X11/locale/<localename>/Compose")

       %S  expands to the name of the system directory for Compose files (i.e., "/usr/share/X11/locale")

       For example, you can include in your compose file the default Compose file by using:
	      include "%L"
       and then rewrite only the few rules that you need to change.  New compose rules can be added, and previous ones replaced.

FILE FORMAT

       Compose	files  are  plain  text  files, with a separate line for each compose sequence.   Comments begin with # characters.   Each compose
       sequence specifies one or more events and a resulting input sequence, with an optional comment at the end of the line:
	      EVENT [EVENT...] : RESULT [# COMMENT]

       Each event consists of a specified input keysym, and optional modifier states:
	      [MODIFIER_LIST] <keysym>

       Each modifier consists of a specified modifier and a state:
	      (! MODIFIER ) | None
       Modifiers may be preceded by a "~" character to indicate that the modifier must not be present.

       The result specifies a string, keysym, or both, that the X client receives as input when the sequence of events is input:
	      "STRING" | keysym | "STRING" keysym

       Keysyms are specified without the XK_ prefix.

       Strings may be direct text encoded in the locale for which the compose file is to be used, or an escaped  octal	or  hexadecimal  character
       code.   Octal codes are specified as "123" and hexadecimal codes as "x123a".	It is not necessary to specify in the right part of a rule
       a locale encoded string in addition to the keysym name.	If the string is omitted, Xlib figures it out from the	keysym	according  to  the
       current locale.	I.e., if a rule looks like:
	      <dead_grave> <A> : "300" Agrave
       the result of the composition is always the letter with the "300" code.  But if the rule is:
	      <dead_grave> <A> : Agrave
       the result depends on how Agrave is mapped in the current locale.

ENVIRONMENT

       XCOMPOSEFILE
	      File to use for compose sequences.

       XCOMPOSECACHE
	      Directory to use for caching compiled compose files.

FILES

       $HOME/.XCompose
	      User default compose file if XCOMPOSEFILE is not set.

       /usr/share/X11/locale/compose.dir
	      File listing the compose file path to use for each locale.

       /usr/share/X11/locale/<localemapping>/Compose
	      System default compose file for the locale, mapped via compose.dir.

       /var/cache/libx11/compose/
	      System-wide cache directory for compiled compose files.

       $HOME/.compose-cache/
	      Per-user cache directory for compiled compose files.

SEE ALSO

       XLookupString(3), XmbLookupString(3), XwcLookupString(3), Xutf8LookupString(3), mkcomposecache(1), locale(7).
       Xlib - C Language X Interface

X Version 11							   libX11 1.6.0 							Compose(5)