Mercurial Queues 0.8 bug

Wed Jul 27 05:06:59 UTC 2005

I've found a bug in Mercurial Queues. It'll break the repo if the patch file
dissappears and one tries to push to it (at least with mq push -a). 
The same problem could happen in any case in which repository throws an
unhandled exception. It would then rollback to the state recorded in the
changelog, removing the needed repository keys, including one representing
current dirstate and its parent.

Testcase:
mkdir test
cd test
hg init
mq init
echo 1 > test1
mq new 1.patch
mq refresh
echo 2 > test2
mq new 2.patch
mq refresh
mq pop -a
rm .hg/patches/2.patch
mq push -a           # Wrong transaction handling!
	applying 1.patch
	applying 2.patch
	Traceback (most recent call last):
	  File "/usr/local/bin/mq", line 536, in ?
	    func(u, q, *args, **cmdoptions)
	  File "/usr/local/bin/mq", line 459, in push
	    q.push(patch, force=opts['force'])
	  File "/usr/local/bin/mq", line 266, in push
	    self.apply(s)
	  File "/usr/local/bin/mq", line 62, in apply
	    for l in file(pf):
	IOError: [Errno 2] No such file or directory: '/usr/src/test/.hg/patches/2.patch'
	transaction abort!
	rollback completed        !!!!!!!!! THIS SHOULDN'T HAPPEN !!!!!!!!!

mq diff              # DEADBEEF
hg update -C         # DEADBEEF
hg log               # Wrong!
hg undo
hg id                # Wrong!

-- 
AstralStorm

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