Mercurial > hg > xemacs-beta
diff man/lispref/text.texi @ 412:697ef44129c6 r21-2-14
Import from CVS: tag r21-2-14
author | cvs |
---|---|
date | Mon, 13 Aug 2007 11:20:41 +0200 |
parents | 74fd4e045ea6 |
children | da8ed4261e83 |
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--- a/man/lispref/text.texi Mon Aug 13 11:19:22 2007 +0200 +++ b/man/lispref/text.texi Mon Aug 13 11:20:41 2007 +0200 @@ -70,13 +70,12 @@ and always operated on the current buffer.) -@defun char-after &optional position buffer +@defun char-after position &optional buffer This function returns the character in the buffer at (i.e., immediately after) position @var{position}. If @var{position} is out of range for this purpose, either before the beginning of the buffer, or at -or beyond the end, then the value is @code{nil}. The default for -@var{position} is point. If optional argument @var{buffer} is -@code{nil}, the current buffer is assumed. +or beyond the end, then the value is @code{nil}. If optional argument +@var{buffer} is @code{nil}, the current buffer is assumed. In the following example, assume that the first character in the buffer is @samp{@@}: @@ -89,15 +88,6 @@ @end example @end defun -@defun char-before &optional position buffer -This function returns the character in the current buffer immediately -before position @var{position}. If @var{position} is out of range for -this purpose, either at or before the beginning of the buffer, or beyond -the end, then the value is @code{nil}. The default for -@var{position} is point. If optional argument @var{buffer} is -@code{nil}, the current buffer is assumed. -@end defun - @defun following-char &optional buffer This function returns the character following point in the buffer. This is similar to @code{(char-after (point))}. However, if point is at @@ -1488,7 +1478,7 @@ and so on. If a mismatch is found, it means that the sort keys are unequal; the sort key whose character is less at the point of first mismatch is the lesser sort key. The individual characters are compared -according to their numerical values. Since Emacs uses the @sc{ascii} +according to their numerical values. Since Emacs uses the @sc{ASCII} character set, the ordering in that set determines alphabetical order. @c version 19 change @@ -2474,59 +2464,18 @@ @defun translate-region start end table This function applies a translation table to the characters in the -buffer between positions @var{start} and @var{end}. The translation -table @var{table} can be either a string, a vector, or a char-table. - -If @var{table} is a string, its @var{n}th element is the mapping for the -character with code @var{n}. - -If @var{table} is a vector, its @var{n}th element is the mapping for -character with code @var{n}. Legal mappings are characters, strings, or -@code{nil} (meaning don't replace.) - -If @var{table} is a char-table, its elements describe the mapping -between characters and their replacements. The char-table should be of -type @code{char} or @code{generic}. - -When the @var{table} is a string or vector and its length is less than -the total number of characters (256 without Mule), any characters with -codes larger than the length of @var{table} are not altered by the -translation. +buffer between positions @var{start} and @var{end}. + +The translation table @var{table} is a string; @code{(aref @var{table} +@var{ochar})} gives the translated character corresponding to +@var{ochar}. If the length of @var{table} is less than 256, any +characters with codes larger than the length of @var{table} are not +altered by the translation. The return value of @code{translate-region} is the number of characters that were actually changed by the translation. This does not count characters that were mapped into themselves in the translation table. - -@strong{NOTE}: Prior to XEmacs 21.2, the @var{table} argument was -allowed only to be a string. This is still the case in FSF Emacs. - -The following example creates a char-table that is passed to -@code{translate-region}, which translates character @samp{a} to -@samp{the letter a}, removes character @samp{b}, and translates -character @samp{c} to newline. - -@example -@group ----------- Buffer: foo ---------- -Here is a sentence in the buffer. ----------- Buffer: foo ---------- -@end group - -@group -(let ((table (make-char-table 'generic))) - (put-char-table ?a "the letter a" table) - (put-char-table ?b "" table) - (put-char-table ?c ?\n table) - (translate-region (point-min) (point-max) table)) - @result{} 3 - ----------- Buffer: foo ---------- -Here is the letter a senten -e in the uffer. ----------- Buffer: foo ---------- -@end group -@end example @end defun @node Registers