Date: Fri, 24 Jun 2011 22:08:27 +0000 (UTC) From: Jilles Tjoelker <jilles@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r223522 - head/bin/sh Message-ID: <201106242208.p5OM8R4G072293@svn.freebsd.org>
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Author: jilles Date: Fri Jun 24 22:08:26 2011 New Revision: 223522 URL: http://svn.freebsd.org/changeset/base/223522 Log: sh(1): Improve documentation of shell patterns: * Shell patterns are also for ${var#pat} and the like. * An '!' by itself will not trigger pathname generation so do not call it a meta-character, even though it has a special meaning directly after an '['. * Character ranges are locale-dependent. * A '^' will complement a character class like '!' but is non-standard. MFC after: 1 week Modified: head/bin/sh/sh.1 Modified: head/bin/sh/sh.1 ============================================================================== --- head/bin/sh/sh.1 Fri Jun 24 22:01:56 2011 (r223521) +++ head/bin/sh/sh.1 Fri Jun 24 22:08:26 2011 (r223522) @@ -1629,15 +1629,15 @@ There are two restrictions on this: firs a string containing a slash, and second, a pattern cannot match a string starting with a period unless the first character of the pattern is a period. -The next section describes the patterns used for both -Pathname Expansion and the +The next section describes the patterns used for +Pathname Expansion, +the four varieties of parameter expansion for substring processing and the .Ic case command. .Ss Shell Patterns A pattern consists of normal characters, which match themselves, and meta-characters. The meta-characters are -.Ql \&! , .Ql * , .Ql \&? , and @@ -1667,7 +1667,7 @@ matches a .Ql \&[ rather than introducing a character class. A character class matches any of the characters between the square brackets. -A range of characters may be specified using a minus sign. +A locale-dependent range of characters may be specified using a minus sign. A named class of characters (see .Xr wctype 3 ) may be specified by surrounding the name with @@ -1680,12 +1680,17 @@ is a shell pattern that matches a single The character class may be complemented by making an exclamation point .Pq Ql !\& the first character of the character class. +A caret +.Pq Ql ^ +has the same effect but is non-standard. .Pp To include a .Ql \&] in a character class, make it the first character listed (after the -.Ql \&! , +.Ql \&! +or +.Ql ^ , if any). To include a .Ql - ,
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