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From: Thien-Thi Nguyen <ttn@gnuvola.org>
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Subject: Re: Move sha1 to C?
Date: Tue, 24 May 2011 07:09:44 +0200
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Cc: Bug-gnulib <bug-gnulib@gnu.org>, emacs-devel@gnu.org
To: Paul Eggert <eggert@cs.ucla.edu>
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In-Reply-To: <4DDADB67.1090904@cs.ucla.edu> (Paul Eggert's message of "Mon, 23
	May 2011 15:10:47 -0700")
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() Paul Eggert <eggert@cs.ucla.edu>
() Mon, 23 May 2011 15:10:47 -0700

   +                sed_extract_condition1='/^ *'"$escaped_dep"' *$/{
   +                  s/^.*$/true/p
   +                }'
   +                sed_extract_condition2='/^ *'"$escaped_dep"' *\[.*\] *$/{
   +                  s/^ *'"$escaped_dep"' *\[\(.*\)\] *$/\1/p
   +                }'

IIUC the curly braces are optional if they contain only one command.
Is that not the case everywhere?