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#: tags</title>
<link rel="alternate" type="application/rss+xml"
href="?cmd=tags;style=rss" title="RSS feed for #repo|escape#: tags">
</head>
<body>
<div class="buttons">
<a href="?cl=tip">changelog</a>
<a href="?mf=#manifest|short#;path=/">manifest</a>
<a type="application/rss+xml" href="?cmd=tags;style=rss">rss</a>
</div>
<h2>tags:</h2>
<ul id="tagEntries">
#entries%tagentry#
</ul>
#footer#