add "archive" command, like "cvs export" only better.
most code in mercurial/archival.py module, for sharing with hgweb.
#header#
<title>#repo|escape#: File revision</title>
<link rel="alternate" type="application/rss+xml"
href="?cmd=changelog;style=rss" title="RSS feed for #repo|escape#">
</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> / file revision
</div>
<div class="page_nav">
<a href="?cmd=summary;style=gitweb">summary</a> | <a href="?cmd=changelog;style=gitweb">changelog</a> | <a href="?cmd=tags;style=gitweb">tags</a> | <a href="?mf=#manifest|short#;path=#path|urlescape#;style=gitweb">manifest</a> | <a href="?cmd=changeset;node=#node#;style=gitweb">changeset</a> | file | <a href="?cmd=filelog;file=#file|urlescape#;filenode=#filenode#;style=gitweb">revisions</a> | <a href="?cmd=annotate;file=#file|urlescape#;filenode=#filenode#;style=gitweb">annotate</a> | <a href="?cmd=file;file=#file|urlescape#;filenode=#filenode#;style=raw">raw</a><br/>
</div>
<div class="title">#file|escape#</div>
<table>
<tr>
<td class="metatag">changeset #rev#:</td>
<td><a href="?cs=#node|short#;style=gitweb">#node|short#</a></td></tr>
#rename%filerename#
#parent%fileannotateparent#
#child%fileannotatechild#
<tr>
<td class="metatag">manifest:</td>
<td><a href="?mf=#manifest|short#;path=/;style=gitweb">#manifest|short#</a></td></tr>
<tr>
<td class="metatag">author:</td>
<td>#author|obfuscate#</td></tr>
<tr>
<td class="metatag">date:</td>
<td>#date|date# (#date|age# ago)</td></tr>
<tr>
<td class="metatag">permissions:</td>
<td>#permissions|permissions#</td></tr>
</table>
<div class="page_body">
#text%fileline#
</div>
#footer#