Re: doc patches for shell file descriptors, OSF, etc.

[Ralf Wildenhues]

* Paul Eggert wrote on Wed, Jun 28, 2006 at 07:50:40PM CEST:
> This change was prompted by
> <http://lists.gnu.org/archive/html/bug-coreutils/2006-06/msg00225.html>,
> but I cleaned up some of the HP-UX / OSF/1 discussion while I was in
> the neighborhood.

I have scanned Automake and Libtool for instances of this bug, and
installed the patch below for Automake to follow the style guideline,
even if it won't fix a bug in this case:

- Really the issue that the redirection of stdout is mentioned in the
  shell trace on stderr, does in fact happen with many shells, e.g.,
  ksh, pdksh.
- theoretically, the change below could fix a failure of
  tests/location.test, but:
- these shells also typically reset the 'x' flag upon shell function
  entry.  The change is still useful to avoid the bug when code is
  copied elsewhere, and for consistency.  Thus I have applied it.

Cheers,
Ralf

        * tests/defs.in (AUTOMAKE_run): Redirect stdout before stderr,
        for consistency with the recommendation prompted by this report:
        <http://lists.gnu.org/archive/html/bug-coreutils/2006-06/msg00225.html>.

Index: tests/defs.in
===================================================================
RCS file: /cvs/automake/automake/tests/defs.in,v
retrieving revision 1.38
diff -u -r1.38 defs.in
--- tests/defs.in       10 May 2006 21:14:36 -0000      1.38
+++ tests/defs.in       5 Jul 2006 21:44:35 -0000
@@ -331,7 +331,7 @@
   expected_exitcode=$1
   shift
   exitcode=0
-  $AUTOMAKE ${1+"$@"} 2>stderr >stdout || exitcode=$?
+  $AUTOMAKE ${1+"$@"} >stdout 2>stderr || exitcode=$?
   cat stderr
   cat stdout
   test $exitcode = $expected_exitcode || exit 1