[SCM] GNU M4 source repository branch, master, updated. cvs-readonly-187-g052319b

[Eric Blake]

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- Log -----------------------------------------------------------------
commit 052319b635abea0efba90930031d9c0899dcb0a8
Author: Eric Blake <address@hidden>
Date:   Wed Feb 11 08:49:43 2009 -0700

    Avoid regression in popdef(undef).
    
    * doc/m4.texinfo (Trace): Enhance test, to cover regression
    recently fixed on the branch.
    
    Signed-off-by: Eric Blake <address@hidden>
    (cherry picked from commit f35224878771517f1d7c13568c1b65a59e7908a4)

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

Summary of changes:
 ChangeLog      |    6 ++++++
 doc/m4.texinfo |   12 +++++++++++-
 2 files changed, 17 insertions(+), 1 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 85e876b..acbdeec 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2009-02-11  Eric Blake  <address@hidden>
+
+       Avoid regression in popdef(undef).
+       * doc/m4.texinfo (Trace): Enhance test, to cover regression
+       recently fixed on the branch.
+
 2009-02-09  Eric Blake  <address@hidden>
 
        Enhance index to support starting offset.
diff --git a/doc/m4.texinfo b/doc/m4.texinfo
index 093f395..f972b48 100644
--- a/doc/m4.texinfo
+++ b/doc/m4.texinfo
@@ -4238,6 +4238,16 @@ foo
 defn(`foo')
 @error{}m4:stdin:4: Warning: defn: undefined macro `foo'
 @result{}
+undefine(`foo')
address@hidden:stdin:5: Warning: undefine: undefined macro `foo'
address@hidden
+pushdef(`foo')
address@hidden
+popdef(`foo')
address@hidden
+popdef(`foo')
address@hidden:stdin:8: Warning: popdef: undefined macro `foo'
address@hidden
 define(`foo', `bar')
 @result{}
 foo
@@ -4248,7 +4258,7 @@ undefine(`foo')
 ifdef(`foo', `yes', `no')
 @result{}no
 indir(`foo')
address@hidden:stdin:9: Warning: indir: undefined macro `foo'
address@hidden:stdin:13: Warning: indir: undefined macro `foo'
 @result{}
 define(`foo', `blah')
 @result{}


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