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
#header#
<title>#repo|escape#: Changeset</title>
<link rel="alternate" type="application/rss+xml"
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</head>
<body>
<div class="page_header">
<a href="http://www.selenic.com/mercurial/" title="Mercurial"><div style="float:right;">Mercurial</div></a><a href="?cmd=summary;style=gitweb">#repo|escape#</a> / changeset
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<div>
<a class="title" href="?cmd=changeset;node=#node#;style=raw">#desc|escape|firstline#</a>
</div>
<div class="title_text">
<table cellspacing="0">
<tr><td>author</td><td>#author|obfuscate#</td></tr>
<tr><td></td><td>#date|date# (#date|age# ago)</td></tr>
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<tr><td>manifest</td><td style="font-family:monospace"><a class="list" href="?cmd=manifest;manifest=#manifest|short#;path=/;style=gitweb">#manifest|short#</a></td></tr>
#parent%changesetparent#
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#files#
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