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From: Richard Stallman <rms@gnu.org>
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Subject: Re: RMAIL file locking problem?
Date: Wed, 20 Apr 2005 10:56:45 -0400
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I don't know how to debug this remotely, but if you run
under GDB, you can put a breakpoint at lock_file and see
when and where it locks the file.  Using the xbacktrace
GDB command at that point would give us a lot of info
about the reason, probably enough to figure out what's
happening.