fix speed regression in mdiff caused by line split bugfix.
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<title>#repo|escape#: manifest #manifest|short#</title>
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<div class="buttons">
<a href="?cl=#rev#">changelog</a>
<a href="?tags=">tags</a>
<a href="?cs=#node|short#">changeset</a>
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<h2>manifest for changeset #node|short#: #path|escape#</h2>
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<tr class="parity1">
<td><tt>drwxr-xr-x</tt>
<td><a href="?mf=#manifest|short#;path=#up|urlescape#">[up]</a>
#dentries%manifestdirentry#
#fentries%manifestfileentry#
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