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34 lines
1.3 KiB
HTML
34 lines
1.3 KiB
HTML
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{% comment -%}
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Fixes the HTML for highlighted code with linenos.
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Derived from the workaround provided by Dmitry Hrabrov (DeXP) at
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https://github.com/penibelst/jekyll-compress-html/issues/71#issuecomment-188144901
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Explanation:
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The HTML produced by Rouge with the linenos option matches CSS `code table`.
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Jekyll (<= 4.1.1) always wraps the highlighted HTML with `pre`, which is
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unnecessary and non-conforming, and leads to validation error reports.
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The fix removes the `pre` tags around `_code` whenever it contains the pattern
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`<table class="rouge-table">`. This change avoids validation errors, and
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allows the use of [Jekyll layout for compressing HTML](http://jch.penibelst.de),
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which relies on `pre` tags not being nested.
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Usage:
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{% capture fix_linenos_code %}{% highlight AnyLanguage linenos %}
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Some code
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{% endhighlight %}{% endcapture %}{% include fix_linenos.html %}{{ fix_linenos_code }}
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Caveats:
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The above does not work when `Some code` happens to contain the matched string
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`<table class="rouge-table">`.
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{%- endcomment %}
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{% if fix_linenos_code contains '<table class="rouge-table">' %}
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{% assign fix_linenos_code = fix_linenos_code | replace: "<pre><code", "<code" %}
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{% assign fix_linenos_code = fix_linenos_code | replace: "</code></pre>", "</code>" %}
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{% endif %}
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