Binary search help needed for WWW::Mechanize::Shell

Hello porters,

WWW::Mechanize::Shell has a failure on 5.10-to-be, but the
same test 
works on 5.8.8 [1]. Unfortunately, I haven't been able to
whittle down 
the test to something manageable that still exhibits the
failure 
behaviour, and I've already spent the evening with that.

So, I beseech you to run a binary search when the test
starts failing in 
the hope that the patch reason hints at the deeper cause of
the test 
failures.

A bit of the situation:

The W:M:S code wraps LWP::UserAgent::request using
Hook::LexWrap.
The logging code in W:M:S is overwritten from the test
program, to 
instrument it.

On the first round, it all works, LWP::UserAgent::request is
called and 
the wrapping logging code in W:M:S resp. the instrumented
test code are 
called. (Test 6)

On the second round, the wrapped LWP::UserAgent::request
still gets 
called, but the test instrumentation code isn't, anymore.
(Test 14)

All my attempts to recreate this separately in a nice
self-contained 
file have been in vain, and the same code has been working
for a long 
time under 5.8.x, so I'm at a loss as to what's wrong with
it under 
5.10-to-be ...

-max

[1] http://www.nntp.perl.org/group/perl.cpan.
testers/2007/10/msg671909.html
http://www.nntp.perl.org/group/perl.cpan.
testers/2007/10/msg671496.html

>>>>> On Sun, 07 Oct 2007 01:23:49 +0200, Max
Maischein <corioncorion.net> said:

  > Hello porters,
  > WWW::Mechanize::Shell has a failure on 5.10-to-be,
but the same test
  > works on 5.8.8 [1]. Unfortunately, I haven't been
able to whittle down
  > the test to something manageable that still exhibits
the failure
  > behaviour, and I've already spent the evening with
that.

Do you know what's the problem with the
WWW::Mechanize::FormFiller
module that is used in W/M/Shell.pm? It's currently not in
the CPAN
index so I cannot run or test Shell with any perl.

-- 
andreas