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authorAndrew M. Kuchling <amk@amk.ca>2006-11-17 13:30:25 (GMT)
committerAndrew M. Kuchling <amk@amk.ca>2006-11-17 13:30:25 (GMT)
commit8c456f3b5705f9b4dc8f822f92185570c1ce94bb (patch)
tree7bd3f8cd29c8ee77550fef80d215066df8a387ca /Lib/lib-tk
parent25aabf4cbb7ff8d1a38f8ef4602a409c00474a30 (diff)
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Remove file-locking in MH.pack() method.
This change looks massive but it's mostly a re-indenting after removing some try...finally blocks. Also adds a test case that does a pack() while the mailbox is locked; this test would have turned up bugs in the original code on some platforms. In both nmh and GNU Mailutils' implementation of MH-format mailboxes, no locking is done of individual message files when renaming them. The original mailbox.py code did do locking, which meant that message files had to be opened. This code was buggy on certain platforms (found through reading the code); there were code paths that closed the file object and then called _unlock_file() on it. Will backport to 25-maint once I see how the buildbots react to this patch.
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