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Custom ignore fragment with surrounding code block and decoding of entities #893

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JanSellner opened this issue Mar 15, 2018 · 0 comments · Fixed by #894
Closed

Custom ignore fragment with surrounding code block and decoding of entities #893

JanSellner opened this issue Mar 15, 2018 · 0 comments · Fixed by #894

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@JanSellner
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This is a follow-up issue for #836 (btw: thanks for the fix).

Using a slightly different example as in the referenced issue:

<html>
<head></head>
<body>
    \begin{alignat*}{2}% Use alignat when you wish to have individual equation numbering
        &amp;l_{00} y_{0}                               &amp;&amp; = b_{0} \\
        &amp;l_{10} y_{0} + l_{11} y_{1}                &amp;&amp; = b_{1} \\
        &amp;l_{20} y_{0} + l_{21} y_{1} + l_{22} y_{2} &amp;&amp; = b_{2}
    \end{alignat*}
    <pre>
    <code class="language-latex">
    \documentclass{scrartcl}
    \usepackage{amsmath}

    \begin{document}

    \begin{alignat*}{2}% Use alignat when you wish to have individual equation numbering
        &amp;l_{00} y_{0}                               &amp;&amp; = b_{0} \\
        &amp;l_{10} y_{0} + l_{11} y_{1}                &amp;&amp; = b_{1} \\
        &amp;l_{20} y_{0} + l_{21} y_{1} + l_{22} y_{2} &amp;&amp; = b_{2}
    \end{alignat*}

    \end{document}
    </code>
    </pre>
</body>
</html>

and calling the CLI-version (3.5.11) via html-minifier --minify-js --minify-css --remove-comments --remove-empty-attributes --remove-redundant-attributes --collapse-whitespace --ignore-custom-fragments "\\begin{alignat\*}[\s\S]*?\\end{alignat\*}" --decode-entities input.html (note the additional parameter --decode-entities) produces the following output:

<html><head></head><body> \begin{alignat*}{2}% Use alignat when you wish to have individual equation numbering
        &amp;l_{00} y_{0}                               &amp;&amp; = b_{0} \\
        &amp;l_{10} y_{0} + l_{11} y_{1}                &amp;&amp; = b_{1} \\
        &amp;l_{20} y_{0} + l_{21} y_{1} + l_{22} y_{2} &amp;&amp; = b_{2}
    \end{alignat*} <pre>
    <code class="language-latex">
    \documentclass{scrartcl}
    \usepackage{amsmath}

    \begin{document}

    \begin{alignat*}{2}% Use alignat when you wish to have individual equation numbering
        &ampamp;l_{00} y_{0}                               &ampamp;&ampamp; = b_{0} \\
        &ampamp;l_{10} y_{0} + l_{11} y_{1}                &ampamp;&ampamp; = b_{1} \\
        &ampamp;l_{20} y_{0} + l_{21} y_{1} + l_{22} y_{2} &ampamp;&ampamp; = b_{2}
    \end{alignat*}

    \end{document}
    </code>
    </pre></body></html>

The whitespace inside the code-block stays now untouched but, unfortunately, the entity &amp; gets messed up. This seems to be related to the custom ignore fragment inside the code-block, though, since in the first alignat environment (without a surrounding code-block) the entities remain unchanged.
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fix corner case in decodeEntities kangax/html-minifier
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@JanSellner