[SCM] GNU Autoconf source repository branch, master, updated. v2.68-103-gd1b31ac

[Stefano Lattarini]

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- Log -----------------------------------------------------------------
commit d1b31ac57cc069527d037f3291e643813ce0bd69
Author: Stefano Lattarini <address@hidden>
Date:   Sat Dec 24 16:43:36 2011 +0100

    docs: issue with shell functions and here-documents on Solaris
    
    * doc/autoconf.texi (Here-Documents): Using a command substitution
    in a here-documents being fed to a shell function is unportable.
    
    Problem revealed by the automake testsuite:
    <http://lists.gnu.org/archive/html/automake-patches/2011-12/msg00149.html>

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog         |    8 ++++++++
 doc/autoconf.texi |   13 +++++++++++++
 2 files changed, 21 insertions(+), 0 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 25799b2..8eaf0d7 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2011-12-24  Stefano Lattarini  <address@hidden>
+
+       docs: issue with shell functions and here-documents on Solaris
+       * doc/autoconf.texi (Here-Documents): Using a command substitution
+       in a here-documents being fed to a shell function is unportable.
+       Problem revealed by the automake testsuite:
+       
<http://lists.gnu.org/archive/html/automake-patches/2011-12/msg00149.html>
+
 2011-12-26  Paul Eggert  <address@hidden>
 
        AS_LN_S: fall back on 'cp -pR' (not 'cp -p') if 'ln -s' fails
diff --git a/doc/autoconf.texi b/doc/autoconf.texi
index 0354dfb..4c89750 100644
--- a/doc/autoconf.texi
+++ b/doc/autoconf.texi
@@ -15239,6 +15239,19 @@ bash-2.04$ @kbd{cat <<EOF
 @end group
 @end example
 
+Using command substitutions in a here-document that is fed to a shell
+function is not portable.  For example, with Solaris 10 @command{/bin/sh}:
+
address@hidden
+$ @kbd{kitty () @{ cat; @}}
+$ @kbd{kitty <<EOF
+> `echo ok`
+> EOF}
+/tmp/sh199886: cannot open
+$ @kbd{echo $?}
+1
address@hidden example
+
 Some shells mishandle large here-documents: for example,
 Solaris 10 @command{dtksh} and the UnixWare 7.1.1 Posix shell, which are
 derived from Korn shell version M-12/28/93d, mishandle braced variable


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