Ignore EPIPE in pipefilter
This hides the following traceback (there's a race condition involved,
so you may have to try a few times to hit it):
$ hg sign --key key-that-does-not-exist
Signing 2062:4bad92f4ea65
gpg: skipped "key-that-does-not-exist": secret key not available
gpg: signing failed: secret key not available
Exception in thread Thread-1:
Traceback (most recent call last):
File "threading.py", line 442, in __bootstrap
self.run()
File "threading.py", line 422, in run
self.__target(*self.__args, **self.__kwargs)
File "mercurial/util.py", line 24, in writer
pin.close()
IOError: [Errno 32] Broken pipe
abort: Error while signing
changeset: 0:0acdaf898367
tag: tip
user: test
date: Mon Jan 12 13:46:40 1970 +0000
summary: test
changeset: 1:c5c60883086f
tag: tip
user: test
date: Mon Jan 12 13:46:40 1970 +0000
summary: Added tag bleah for changeset 0acdaf8983679e0aac16e811534eb49d7ee1f2b4
changeset: 0:0acdaf898367
tag: bleah
user: test
date: Mon Jan 12 13:46:40 1970 +0000
summary: test
abort: working copy of .hgtags is changed (please commit .hgtags manually)
failed
use of 'hg tag NAME [REV]' is deprecated, please use 'hg tag [-r REV] NAME' instead
abort: use only one form to specify the revision
failed
use of 'hg tag NAME [REV]' is deprecated, please use 'hg tag [-r REV] NAME' instead
0acdaf8983679e0aac16e811534eb49d7ee1f2b4 bleah
0acdaf8983679e0aac16e811534eb49d7ee1f2b4 bleah0
c5c60883086f5526bd3e36814b94a73a4e75e172 bleah1
abort: '\n' cannot be used in a tag name
abort: ':' cannot be used in a tag name