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Showing content from https://github.com/Python-Markdown/markdown/issues/1263 below:

PrettifyTreeprocessor stripping whitespace in `<pre><code>` · Issue #1263 · Python-Markdown/markdown · GitHub

Again this small code section markdown.treeprocessor.py:L432. I hope I'm not too annoying hitting these edge cases 😅

My element looks like this; it's a table where each line is wrapped in <pre><code>.

<table>
  <tbody>
    <tr>
      <td class="lineno">1</td>
      <td><pre><code><span>def</span> <span>foo</span><span>()</span><span>:</span></code></pre></td>
    </tr>
    <tr>
      <td class="lineno">2</td>
      <td><pre><code>    <span>return</span> <span>2</span></code></pre></td>
    </tr>
  </tbody>
</table>

which looks like this

The Prettifier turns this into something like this

<table>
  <tbody>
    <tr>
      <td class="lineno">1</td>
      <td><pre><code>
<span>def</span> <span>foo</span><span>()</span><span>:</span></code></pre></td>
    </tr>
    <tr>
      <td class="lineno">2</td>
      <td><pre><code>
<span>return</span> <span>2</span></code></pre></td>
    </tr>
  </tbody>
</table>

which looks like this

Looking at Babelmark only pandoc and Python-Markdown appears to be stripping whitespace in <pre><code>, though fenced code isn't supported by default.

Possible fixes:

• Don't change anything, keep it as it is.
• Remove section.
• Don't prettify if pre[0].text.isspace() is True (would fix my case).

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