[SCM] GNU Autoconf source repository branch, master, updated. v2.63b-66-g596644c

[Eric Blake]

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- Log -----------------------------------------------------------------
commit 596644ca294922cc29a3f803f1226a9433e4af66
Author: Eric Blake <address@hidden>
Date:   Thu Jul 2 07:17:43 2009 -0600

    Skip test on shells that can't catch syntax failure.
    
    * tests/autotest.at (Syntax error): Skip test if shell aborts on
    syntax error (AIX ksh88) or doesn't detect it (zsh).
    * doc/autoconf.texi (Limitations of Builtins) <.>: Mention these
    limitations.
    Reported by Ralf Wildenhues.
    
    Signed-off-by: Eric Blake <address@hidden>

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

Summary of changes:
 ChangeLog         |    9 +++++++++
 doc/autoconf.texi |   18 ++++++++++++++++++
 tests/autotest.at |   13 ++++++++++---
 3 files changed, 37 insertions(+), 3 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 8f0b5ae..4d5d532 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,12 @@
+2009-07-02  Eric Blake  <address@hidden>
+
+       Skip test on shells that can't catch syntax failure.
+       * tests/autotest.at (Syntax error): Skip test if shell aborts on
+       syntax error (AIX ksh88) or doesn't detect it (zsh).
+       * doc/autoconf.texi (Limitations of Builtins) <.>: Mention these
+       limitations.
+       Reported by Ralf Wildenhues.
+
 2009-06-30  Jan Madzik  <address@hidden>  (tiny change)
            Ralf Wildenhues  <address@hidden>
 
diff --git a/doc/autoconf.texi b/doc/autoconf.texi
index 5908bbb..04e3b10 100644
--- a/doc/autoconf.texi
+++ b/doc/autoconf.texi
@@ -15483,6 +15483,24 @@ to this @env{PATH} search, even though Posix forbids 
it.  So if you want
 to use @command{.} on a file @file{foo} in the current directory, you
 must use @samp{. ./foo}.
 
+Not all shells gracefully handle syntax errors within a sourced file.
+On one extreme, some non-interactive shells abort the entire script.  On
+the other, @command{zsh} 4.3.10 has a bug where it fails to react to the
+syntax error.
+
address@hidden
+$ @kbd{echo 'fi' > syntax}
+$ @kbd{bash -c '. ./syntax; echo $?'}
+./syntax: line 1: syntax error near unexpected token `fi'
+./syntax: line 1: `fi'
+1
+$ @kbd{ash -c '. ./syntax; echo $?'}
+./syntax: 1: Syntax error: "fi" unexpected
+$ @kbd{zsh -c '. ./syntax; echo $?'}
+./syntax:1: parse error near `fi'
+0
address@hidden example
+
 @item @command{!}
 @c --------------
 @prindex @command{!}
diff --git a/tests/autotest.at b/tests/autotest.at
index d86088c..6f0bd1d 100644
--- a/tests/autotest.at
+++ b/tests/autotest.at
@@ -271,9 +271,16 @@ AT_CHECK_AT_TEST([Syntax error],
    AT_CLEANUP
    AT_SETUP([another test])
    AT_CHECK([:])],
-  [], [1], [], [stderr], [],
-  [AT_CHECK([grep "unable to parse test group: 2" stderr], [0], [ignore])
-   AT_CHECK([$CONFIG_SHELL ./micro-suite 1 3], [0], [ignore])])
+  [], [0], [], [], [],
+  [dnl Until we can find a way to avoid catastrophic failure (ash) or
+   dnl lack of failure (zsh), skip the rest of this test on such shells.
+   echo 'if' > syntax
+   AT_CHECK([${CONFIG_SHELL-$SHELL} -c 'case `. ./syntax; echo $?` in
+                 0|"") exit 77;;
+               esac'], [0], [ignore], [ignore])
+   AT_CHECK([$CONFIG_SHELL ./micro-suite], [1], [ignore], [stderr])
+   AT_CHECK([grep "unable to parse test group: 2" stderr], [0], [ignore])],
+  [1 3])
 
 AT_CHECK_AT_TEST([errexit],
   [AT_CHECK([false])


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