Re: match-string debugging problem

[Stephen Berman]

On Sun, 13 Mar 2005 15:52:24 -0600 Alan Wehmann <wehmann@fnal.gov> wrote:

> Stephen Berman <Stephen.Berman@gmx.net> writes:
>
>> There seems to be something about match-string that I don't
>> understand.  Here is an example of the kind of code I'm working with:
>> [...]
>> The last line indicates that match-string correctly matches the
>> strings that build mystring-list.  But when I step through the code
>> with edebug, match-string always returns nil and a wrong-type-argument
>> error is raised at the insert (since nil is not char-or-string-p).
>> [...]
>>
> I tried your example, with 
>
> GNU Emacs 21.2.2 (sparc-sun-solaris2.8, X toolkit) of 2005-02-10 on
> gax
>
> and also with
>
> XEmacs 21.4 (patch 15) "Security Through Obscurity" [Lucid]
> (sparc-sun-solaris2.8, Mule) of Fri Feb 11 2005 on gax
>
> When I put a breakpoint in Edebug after
>
> (match-string 1)
>
> I get the strings I expect to see.  Also, a breakpoint after 'elt' in
>
>       (insert elt " ")
>
> behaves as I would expect & not as you describe.

Yes, the example was a red herring, because I had neglected to test it
with the default Emacs (using the -q command line option -- I thought
I had done so, but misremembered).  It turns out the bug wasn't in
Emacs but in tabbar.el <http://sourceforge.net/projects/emhacks/>,
which I load from my init-file.  The bug has now been fixed in the
current CVS version of tabbar.el.

Steve Berman