Date: Sun, 4 Apr 2010 13:17:05 +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: r206158 - head/bin/sh Message-ID: <201004041317.o34DH5hD021198@svn.freebsd.org>
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Author: jilles Date: Sun Apr 4 13:17:05 2010 New Revision: 206158 URL: http://svn.freebsd.org/changeset/base/206158 Log: sh: Document the expansion changes in the man page. Note that the following sentence > Enclosing the full parameter expansion string in double-quotes does not > cause the following four varieties of pattern characters to be quoted, > whereas quoting characters within the braces has this effect. is now true, but used to be incorrect. Modified: head/bin/sh/sh.1 Modified: head/bin/sh/sh.1 ============================================================================== --- head/bin/sh/sh.1 Sun Apr 4 08:47:34 2010 (r206157) +++ head/bin/sh/sh.1 Sun Apr 4 13:17:05 2010 (r206158) @@ -32,7 +32,7 @@ .\" from: @(#)sh.1 8.6 (Berkeley) 5/4/95 .\" $FreeBSD$ .\" -.Dd March 6, 2010 +.Dd April 4, 2010 .Dt SH 1 .Os .Sh NAME @@ -1178,10 +1178,20 @@ consists of all characters until the mat .Ql } . Any .Ql } -escaped by a backslash or within a quoted string, and characters in +escaped by a backslash or within a single-quoted string, and characters in embedded arithmetic expansions, command substitutions, and variable expansions, are not examined in determining the matching .Ql } . +Except for the variants with +.Ql + , +.Ql - , +.Ql = +or +.Ql ?\& , +any +.Ql } +within a double-quoted string is also not examined in determining the matching +.Ql } . .Pp The simplest form for parameter expansion is: .Pp @@ -1265,6 +1275,14 @@ is substituted. In the parameter expansions shown previously, use of the colon in the format results in a test for a parameter that is unset or null; omission of the colon results in a test for a parameter that is only unset. +.Pp +The +.Ar word +inherits the type of quoting +(unquoted, double-quoted or here-document) +from the surroundings, +with the exception that a backslash that quotes a closing brace is removed +during quote removal. .Bl -tag -width indent .It Li ${# Ns Ar parameter Ns Li } String Length.
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