Info Catalog elisp: Floating-Point Type elisp: Programming Types elisp: Symbol Type

elisp: Character Type

 
 2.3.3 Character Type
 --------------------
 
 A “character” in Emacs Lisp is nothing more than an integer.  In other
 words, characters are represented by their character codes.  For
 example, the character ‘A’ is represented as the integer 65.
 
    Individual characters are used occasionally in programs, but it is
 more common to work with _strings_, which are sequences composed of
 characters.  String Type.
 
    Characters in strings and buffers are currently limited to the range
 of 0 to 4194303—twenty two bits (Character Codes).  Codes 0
 through 127 are ASCII codes; the rest are non-ASCII (Non-ASCII
 Characters).  Characters that represent keyboard input have a much
 wider range, to encode modifier keys such as Control, Meta and Shift.
 
    There are special functions for producing a human-readable textual
 description of a character for the sake of messages.  Describing
 Characters.
 

Menu

 
· Basic Char Syntax      Syntax for regular characters.
· General Escape Syntax  How to specify characters by their codes.
· Ctl-Char Syntax        Syntax for control characters.
· Meta-Char Syntax       Syntax for meta-characters.
· Other Char Bits        Syntax for hyper-, super-, and alt-characters.
 

Info Catalog elisp: Floating-Point Type elisp: Programming Types elisp: Symbol Type