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comparison man/lispref/text.texi @ 434:9d177e8d4150 r21-2-25

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Import from CVS: tag r21-2-25
author cvs
date Mon, 13 Aug 2007 11:30:53 +0200
parents 3ecd8885ac67
children 576fb035e263
comparison
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433:892ca416f0fb 434:9d177e8d4150
68 is omitted. (In FSF Emacs, and earlier versions of XEmacs, these 68 is omitted. (In FSF Emacs, and earlier versions of XEmacs, these
69 functions usually did not have these optional @var{buffer} arguments 69 functions usually did not have these optional @var{buffer} arguments
70 and always operated on the current buffer.) 70 and always operated on the current buffer.)
71 71
72 72
73 @defun char-after position &optional buffer 73 @defun char-after &optional position buffer
74 This function returns the character in the buffer at (i.e., 74 This function returns the character in the buffer at (i.e.,
75 immediately after) position @var{position}. If @var{position} is out of 75 immediately after) position @var{position}. If @var{position} is out of
76 range for this purpose, either before the beginning of the buffer, or at 76 range for this purpose, either before the beginning of the buffer, or at
77 or beyond the end, then the value is @code{nil}. If optional argument 77 or beyond the end, then the value is @code{nil}. The default for
78 @var{buffer} is @code{nil}, the current buffer is assumed. 78 @var{position} is point. If optional argument @var{buffer} is
79 @code{nil}, the current buffer is assumed.
79 80
80 In the following example, assume that the first character in the 81 In the following example, assume that the first character in the
81 buffer is @samp{@@}: 82 buffer is @samp{@@}:
82 83
83 @example 84 @example
84 @group 85 @group
85 (char-to-string (char-after 1)) 86 (char-to-string (char-after 1))
86 @result{} "@@" 87 @result{} "@@"
87 @end group 88 @end group
88 @end example 89 @end example
90 @end defun
91
92 @defun char-before &optional position buffer
93 This function returns the character in the current buffer immediately
94 before position @var{position}. If @var{position} is out of range for
95 this purpose, either at or before the beginning of the buffer, or beyond
96 the end, then the value is @code{nil}. The default for
97 @var{position} is point. If optional argument @var{buffer} is
98 @code{nil}, the current buffer is assumed.
89 @end defun 99 @end defun
90 100
91 @defun following-char &optional buffer 101 @defun following-char &optional buffer
92 This function returns the character following point in the buffer. 102 This function returns the character following point in the buffer.
93 This is similar to @code{(char-after (point))}. However, if point is at 103 This is similar to @code{(char-after (point))}. However, if point is at