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From: Jilles Tjoelker <jilles@FreeBSD.org>
Date: Sun, 30 May 2010 14:11:27 +0000 (UTC)
To: cvs-src-old@freebsd.org
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Subject: cvs commit: src/bin/sh parser.c src/tools/regression/bin/sh/parser
 heredoc4.0 heredoc5.0
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jilles      2010-05-30 14:11:27 UTC

  FreeBSD src repository

  Modified files:
    bin/sh               parser.c 
  Added files:
    tools/regression/bin/sh/parser heredoc4.0 heredoc5.0 
  Log:
  SVN rev 208655 on 2010-05-30 14:11:27Z by jilles
  
  sh: Change interaction of command substitution and here documents.
  
  If a command substitution contains a newline token, this no longer starts
  here documents of outer commands. This way, we follow POSIX's idea of the
  command substitution being a separate script more closely. It also matches
  other shells better and is consistent with newline characters in quotes not
  starting here documents.
  
  The extension tested in parser/heredoc3.0 ($(cat <<EOF)\ntext\nEOF\n)
  continues to be supported.
  
  In particular, this change allows things like
    cat <<EOF && echo `pwd`
  (a `` command substitution after a here document)
  which formerly silently used an empty file as the here document, because the
  EOF of the inner command "pwd" also forced an empty here document.
  
  Revision  Changes    Path
  1.79      +13 -4     src/bin/sh/parser.c
  1.1       +44 -0     src/tools/regression/bin/sh/parser/heredoc4.0 (new)
  1.1       +56 -0     src/tools/regression/bin/sh/parser/heredoc5.0 (new)