X-Git-Url: https://code.delx.au/gnu-emacs/blobdiff_plain/2db38a6f98c2abb42b746064ce97417cccc27e68..233ba4d924933cb56129bd7511e6137b7c0b8e3e:/doc/lispref/strings.texi diff --git a/doc/lispref/strings.texi b/doc/lispref/strings.texi index 34613a823b..ce080bc221 100644 --- a/doc/lispref/strings.texi +++ b/doc/lispref/strings.texi @@ -1,7 +1,7 @@ @c -*-texinfo-*- @c This is part of the GNU Emacs Lisp Reference Manual. -@c Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1998, 1999, 2001, -@c 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. +@c Copyright (C) 1990-1995, 1998-1999, 2001-2011 +@c Free Software Foundation, Inc. @c See the file elisp.texi for copying conditions. @setfilename ../../info/strings @node Strings and Characters, Lists, Numbers, Top @@ -31,7 +31,7 @@ keyboard character events. * String Conversion:: Converting to and from characters and strings. * Formatting Strings:: @code{format}: Emacs's analogue of @code{printf}. * Case Conversion:: Case conversion functions. -* Case Tables:: Customizing case conversion. +* Case Tables:: Customizing case conversion. @end menu @node String Basics @@ -125,9 +125,8 @@ This function returns a string made up of @var{count} repetitions of @result{} "" @end example - Other functions to compare with this one include @code{char-to-string} -(@pxref{String Conversion}), @code{make-vector} (@pxref{Vectors}), and -@code{make-list} (@pxref{Building Lists}). + Other functions to compare with this one include @code{make-vector} +(@pxref{Vectors}) and @code{make-list} (@pxref{Building Lists}). @end defun @defun string &rest characters @@ -348,9 +347,9 @@ practice: @result{} ("o" "o" "o") @end example -If you need to split a string that is a shell command, where -individual arguments could be quoted, see @ref{Shell Arguments, -split-string-and-unquote}. +If you need to split a string into a list of individual command-line +arguments suitable for @code{call-process} or @code{start-process}, +see @ref{Shell Arguments, split-string-and-unquote}. @end defun @defvar split-string-default-separators @@ -564,38 +563,6 @@ of text characters and general input events (@code{single-key-description} and @code{text-char-description}). These are used primarily for making help messages. -@defun char-to-string character -@cindex character to string -This function returns a new string containing one character, -@var{character}. This function is semi-obsolete because the function -@code{string} is more general. @xref{Creating Strings}. -@end defun - -@defun string-to-char string -@cindex string to character - This function returns the first character in @var{string}. If the -string is empty, the function returns 0. The value is also 0 when the -first character of @var{string} is the null character, @acronym{ASCII} code -0. - -@example -(string-to-char "ABC") - @result{} 65 - -(string-to-char "xyz") - @result{} 120 -(string-to-char "") - @result{} 0 -@group -(string-to-char "\000") - @result{} 0 -@end group -@end example - -This function may be eliminated in the future if it does not seem useful -enough to retain. -@end defun - @defun number-to-string number @cindex integer to string @cindex integer to decimal @@ -656,21 +623,41 @@ this function returns 0. @findex string-to-int @code{string-to-int} is an obsolete alias for this function. +@end defun + +@defun char-to-string character +@cindex character to string +This function returns a new string containing one character, +@var{character}. This function is semi-obsolete because the function +@code{string} is more general. @xref{Creating Strings}. +@end defun + +@defun string-to-char string + This function returns the first character in @var{string}. This +mostly identical to @code{(aref string 0)}, except that it returns 0 +if the string is empty. (The value is also 0 when the first character +of @var{string} is the null character, @acronym{ASCII} code 0.) This +function may be eliminated in the future if it does not seem useful +enough to retain. @end defun Here are some other functions that can convert to or from a string: @table @code @item concat -@code{concat} can convert a vector or a list into a string. +This function converts a vector or a list into a string. @xref{Creating Strings}. @item vconcat -@code{vconcat} can convert a string into a vector. @xref{Vector +This function converts a string into a vector. @xref{Vector Functions}. @item append -@code{append} can convert a string into a list. @xref{Building Lists}. +This function converts a string into a list. @xref{Building Lists}. + +@item byte-to-string +This function converts a byte of character data into a unibyte string. +@xref{Converting Representations}. @end table @node Formatting Strings @@ -1154,7 +1141,3 @@ This function makes @var{char} case-invariant, with syntax This command displays a description of the contents of the current buffer's case table. @end deffn - -@ignore - arch-tag: 700b8e95-7aa5-4b52-9eb3-8f2e1ea152b4 -@end ignore