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      <base href="https://bugs.webkit.org/" />
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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Lift template escape sequence restrictions in tagged templates"
   href="https://bugs.webkit.org/show_bug.cgi?id=166871">166871</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Lift template escape sequence restrictions in tagged templates
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>WebKit
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>WebKit Nightly Build
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>Unspecified
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Unspecified
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>Normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P2
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>JavaScriptCore
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>webkit-unassigned&#64;lists.webkit.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>bakkot&#64;gmail.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>The template literal revision proposal reached stage 3 in July.

This allows

(function(strs) {
  return strs[0] === undefined &amp;&amp; strs.raw[0] === '\\u{invalid}\\1\\xGG';
})`\u{invalid}\1\xGG`; // true

etc. Invalid escapes remain a syntax error in untagged templates.</pre>
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