/[emacs]/emacs/lispref/searching.texi
ViewVC logotype

Diff of /emacs/lispref/searching.texi

Parent Directory Parent Directory | Revision Log Revision Log | View Patch Patch

revision 1.45 by miles, Mon Sep 1 15:45:41 2003 UTC revision 1.46 by eliz, Sun Nov 2 06:29:59 2003 UTC
# Line 293  matches @samp{cr}, @samp{car}, @samp{cdr Line 293  matches @samp{cr}, @samp{car}, @samp{cdr
293    
294  You can also include character ranges in a character alternative, by  You can also include character ranges in a character alternative, by
295  writing the starting and ending characters with a @samp{-} between them.  writing the starting and ending characters with a @samp{-} between them.
296  Thus, @samp{[a-z]} matches any lower-case @sc{ascii} letter.  Ranges may be  Thus, @samp{[a-z]} matches any lower-case @acronym{ASCII} letter.  Ranges may be
297  intermixed freely with individual characters, as in @samp{[a-z$%.]},  intermixed freely with individual characters, as in @samp{[a-z$%.]},
298  which matches any lower case @sc{ascii} letter or @samp{$}, @samp{%} or  which matches any lower case @acronym{ASCII} letter or @samp{$}, @samp{%} or
299  period.  period.
300    
301  Note that the usual regexp special characters are not special inside a  Note that the usual regexp special characters are not special inside a
# Line 326  is @samp{@var{c}..?\377}, the other is @ Line 326  is @samp{@var{c}..?\377}, the other is @
326  @var{c1} is the first character of the charset to which @var{c2}  @var{c1} is the first character of the charset to which @var{c2}
327  belongs.  belongs.
328    
329  You cannot always match all non-@sc{ascii} characters with the regular  You cannot always match all non-@acronym{ASCII} characters with the regular
330  expression @code{"[\200-\377]"}.  This works when searching a unibyte  expression @code{"[\200-\377]"}.  This works when searching a unibyte
331  buffer or string (@pxref{Text Representations}), but not in a multibyte  buffer or string (@pxref{Text Representations}), but not in a multibyte
332  buffer or string, because many non-@sc{ascii} characters have codes  buffer or string, because many non-@acronym{ASCII} characters have codes
333  above octal 0377.  However, the regular expression @code{"[^\000-\177]"}  above octal 0377.  However, the regular expression @code{"[^\000-\177]"}
334  does match all non-@sc{ascii} characters (see below regarding @samp{^}),  does match all non-@acronym{ASCII} characters (see below regarding @samp{^}),
335  in both multibyte and unibyte representations, because only the  in both multibyte and unibyte representations, because only the
336  @sc{ascii} characters are excluded.  @acronym{ASCII} characters are excluded.
337    
338  Starting in Emacs 21, a character alternative can also specify named  Starting in Emacs 21, a character alternative can also specify named
339  character classes (@pxref{Char Classes}).  This is a POSIX feature whose  character classes (@pxref{Char Classes}).  This is a POSIX feature whose
# Line 415  in Emacs 21, and what they mean: Line 415  in Emacs 21, and what they mean:
415    
416  @table @samp  @table @samp
417  @item [:ascii:]  @item [:ascii:]
418  This matches any @sc{ascii} (unibyte) character.  This matches any @acronym{ASCII} (unibyte) character.
419  @item [:alnum:]  @item [:alnum:]
420  This matches any letter or digit.  (At present, for multibyte  This matches any letter or digit.  (At present, for multibyte
421  characters, it matches anything that has word syntax.)  characters, it matches anything that has word syntax.)
# Line 425  matches anything that has word syntax.) Line 425  matches anything that has word syntax.)
425  @item [:blank:]  @item [:blank:]
426  This matches space and tab only.  This matches space and tab only.
427  @item [:cntrl:]  @item [:cntrl:]
428  This matches any @sc{ascii} control character.  This matches any @acronym{ASCII} control character.
429  @item [:digit:]  @item [:digit:]
430  This matches @samp{0} through @samp{9}.  Thus, @samp{[-+[:digit:]]}  This matches @samp{0} through @samp{9}.  Thus, @samp{[-+[:digit:]]}
431  matches any digit, as well as @samp{+} and @samp{-}.  matches any digit, as well as @samp{+} and @samp{-}.
432  @item [:graph:]  @item [:graph:]
433  This matches graphic characters---everything except @sc{ascii} control  This matches graphic characters---everything except @acronym{ASCII} control
434  characters, space, and the delete character.  characters, space, and the delete character.
435  @item [:lower:]  @item [:lower:]
436  This matches any lower-case letter, as determined by  This matches any lower-case letter, as determined by
437  the current case table (@pxref{Case Tables}).  the current case table (@pxref{Case Tables}).
438  @item [:nonascii:]  @item [:nonascii:]
439  This matches any non-@sc{ascii} (multibyte) character.  This matches any non-@acronym{ASCII} (multibyte) character.
440  @item [:print:]  @item [:print:]
441  This matches printing characters---everything except @sc{ascii} control  This matches printing characters---everything except @acronym{ASCII} control
442  characters and the delete character.  characters and the delete character.
443  @item [:punct:]  @item [:punct:]
444  This matches any punctuation character.  (At present, for multibyte  This matches any punctuation character.  (At present, for multibyte

Legend:
Removed from v.1.45  
changed lines
  Added in v.1.46

savannah-hackers-public@gnu.org
ViewVC Help
Powered by ViewVC 1.1.26