fix handling of multiple Content-type headers This can happen if an error happens while sending application/mercurial-0.1 content. The error page will be sent resulting (for at least lighttpd) in the following headers: Content-type: application/mercurial-0.1 Content-type: text/html which result in req.proto = 'application/mercurial-0.1, text/html' fix issue344

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#!/bin/sh

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hg init

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python -c 'print "confuse str.splitlines\nembedded\rnewline"' > a

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hg ci -Ama -d '1 0'

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echo clean diff >> a

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hg ci -mb -d '2 0'

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hg diff -r0 -r1