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From: Giorgos Keramidas <keramida@FreeBSD.org>
Date: Thu, 15 Jan 2009 04:31:55 +0000 (UTC)
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Subject: svn commit: r187278 - in stable/7/lib/libc: . regex string
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Author: keramida (doc committer)
Date: Thu Jan 15 04:31:55 2009
New Revision: 187278
URL: http://svn.freebsd.org/changeset/base/187278

Log:
  MFC 182795 from /head
  
  Add two example regexps: (1) one for matching all the characters
  that belong in a character class, and (2) one for matching all
  the characters *not* in a character class.
  
  Submitted by:   Mark B, mkbucc at gmail.com

Modified:
  stable/7/lib/libc/   (props changed)
  stable/7/lib/libc/regex/re_format.7
  stable/7/lib/libc/string/ffsll.c   (props changed)
  stable/7/lib/libc/string/flsll.c   (props changed)

Modified: stable/7/lib/libc/regex/re_format.7
==============================================================================
--- stable/7/lib/libc/regex/re_format.7	Thu Jan 15 04:29:02 2009	(r187277)
+++ stable/7/lib/libc/regex/re_format.7	Thu Jan 15 04:31:55 2009	(r187278)
@@ -288,6 +288,14 @@ These stand for the character classes de
 A locale may provide others.
 A character class may not be used as an endpoint of a range.
 .Pp
+A bracketed expression like
+.Ql [[:class:]]
+can be used to match a single character that belongs to a character
+class.
+The reverse, matching any character that does not belong to a specific
+class, the negation operator of bracket expressions may be used:
+.Ql [^[:class:]] .
+.Pp
 There are two special cases\(dd of bracket expressions:
 the bracket expressions
 .Ql [[:<:]]