How to debug mintty or screen freeze

Henry S. Thompson
Mon Nov 8 10:16:00 GMT 2010

Bear with me please, this is moderately complex:

I run mintty out of the Quick Launch bar as follows:

 C:\Cygwin\bin\mintty.exe  /usr/bin/screen -q

and in one of the resulting tabs read mail using gnus in xemacs on a
Debian box remotely via ssh.  About once a week as that remote gnus is
painting the subject lines in my spam box, the whole thing freezes

screen doesn't respond to escape commands, ~. does nothing, Control-C
has no effect, trying to close the window results in the "process not
responding" popup.

It's not repeatable, in that reconnecting and changing to the same
gnus Subject buffer will succeed.

I _presume_ some obscure character code is responsible. . .

Two questions:

 1) Anyone else seen anything like this?
 2) Any easy way to provide useful details?  I would be happy to run a
    debugging build if supplied, but really can't run for days under
    strace. . .

       Henry S. Thompson, School of Informatics, University of Edinburgh
      10 Crichton Street, Edinburgh EH8 9AB, SCOTLAND -- (44) 131 650-4440
                Fax: (44) 131 651-1426, e-mail:
 [mail from me _always_ has a .sig like this -- mail without it is forged spam]

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