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  <pre><span class="ruby-comment cmt"># File lib/rack/urlmap.rb, line 22</span>
    <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">remap</span>(<span class="ruby-identifier">map</span>)
      <span class="ruby-ivar">@mapping</span> = <span class="ruby-identifier">map</span>.<span class="ruby-identifier">map</span> { <span class="ruby-operator">|</span><span class="ruby-identifier">location</span>, <span class="ruby-identifier">app</span><span class="ruby-operator">|</span>
        <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">location</span> <span class="ruby-operator">=~</span> <span class="ruby-regexp re">%r{\Ahttps?://(.*?)(/.*)}</span>
          <span class="ruby-identifier">host</span>, <span class="ruby-identifier">location</span> = <span class="ruby-identifier">$1</span>, <span class="ruby-identifier">$2</span>
        <span class="ruby-keyword kw">else</span>
          <span class="ruby-identifier">host</span> = <span class="ruby-keyword kw">nil</span>
        <span class="ruby-keyword kw">end</span>

        <span class="ruby-keyword kw">unless</span> <span class="ruby-identifier">location</span>[<span class="ruby-value">0</span>] <span class="ruby-operator">==</span> <span class="ruby-value">?/</span>
          <span class="ruby-identifier">raise</span> <span class="ruby-constant">ArgumentError</span>, <span class="ruby-value str">&quot;paths need to start with /&quot;</span>
        <span class="ruby-keyword kw">end</span>

        <span class="ruby-identifier">location</span> = <span class="ruby-identifier">location</span>.<span class="ruby-identifier">chomp</span>(<span class="ruby-value str">'/'</span>)
        <span class="ruby-identifier">match</span> = <span class="ruby-constant">Regexp</span>.<span class="ruby-identifier">new</span>(<span class="ruby-node">&quot;^#{Regexp.quote(location).gsub('/', '/+')}(.*)&quot;</span>, <span class="ruby-keyword kw">nil</span>, <span class="ruby-value str">'n'</span>)

        [<span class="ruby-identifier">host</span>, <span class="ruby-identifier">location</span>, <span class="ruby-identifier">match</span>, <span class="ruby-identifier">app</span>]
      }.<span class="ruby-identifier">sort_by</span> <span class="ruby-keyword kw">do</span> <span class="ruby-operator">|</span>(<span class="ruby-identifier">host</span>, <span class="ruby-identifier">location</span>, <span class="ruby-identifier">_</span>, <span class="ruby-identifier">_</span>)<span class="ruby-operator">|</span>
        [<span class="ruby-identifier">host</span> <span class="ruby-value">? </span><span class="ruby-operator">-</span><span class="ruby-identifier">host</span>.<span class="ruby-identifier">size</span> <span class="ruby-operator">:</span> <span class="ruby-constant">INFINITY</span>, <span class="ruby-operator">-</span><span class="ruby-identifier">location</span>.<span class="ruby-identifier">size</span>]
      <span class="ruby-keyword kw">end</span>
    <span class="ruby-keyword kw">end</span></pre>
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