shortest: extract function for checking if a prefix is a revnum
Much of isvalid() was about testing if a prefix is a valid revnum. I
want to reuse that soon, so let's move it out.
There is no significant slowdown from the function call overhead.
Differential Revision: https://phab.mercurial-scm.org/D3460
{header}
<title>{repo|escape}: files</title>
<link rel="alternate" type="application/atom+xml" href="{url|urlescape}atom-log" title="Atom feed for {repo|escape}"/>
<link rel="alternate" type="application/rss+xml" href="{url|urlescape}rss-log" title="RSS feed for {repo|escape}"/>
</head>
<body>
<div id="container">
<div class="page-header">
<h1 class="breadcrumb"><a href="/">Mercurial</a> {pathdef%breadcrumb} / files</h1>
{searchform}
<ul class="page-nav">
<li><a href="{url|urlescape}summary{sessionvars%urlparameter}">summary</a></li>
<li><a href="{url|urlescape}shortlog{sessionvars%urlparameter}">shortlog</a></li>
<li><a href="{url|urlescape}changelog{sessionvars%urlparameter}">changelog</a></li>
<li><a href="{url|urlescape}graph/{symrev}{sessionvars%urlparameter}">graph</a></li>
<li><a href="{url|urlescape}tags{sessionvars%urlparameter}">tags</a></li>
<li><a href="{url|urlescape}bookmarks{sessionvars%urlparameter}">bookmarks</a></li>
<li><a href="{url|urlescape}branches{sessionvars%urlparameter}">branches</a></li>
<li class="current">files</li>
<li><a href="{url|urlescape}help{sessionvars%urlparameter}">help</a></li>
</ul>
</div>
<ul class="submenu">
<li><a href="{url|urlescape}rev/{symrev}{sessionvars%urlparameter}">changeset</a></li>
{archives%archiveentry}
</ul>
<h2 class="no-link no-border">files</h2>
<p class="files">{path|escape} {alltags}</p>
<table>
<tr class="parity{upparity}">
<td>drwxr-xr-x</td>
<td></td>
<td></td>
<td><a href="{url|urlescape}file/{symrev}{up|urlescape}{sessionvars%urlparameter}">[up]</a></td>
<td class="link"> </td>
</tr>
{dentries%direntry}
{fentries%fileentry}
</table>
{footer}