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| Description: |
Steps to reproduce:
# Create a page in the {{markdown/1.2}} syntax with the content:
{noformat}
before
<div class="red">
*x*
</div>
after
{noformat}
# Edit the page with the WYSIWYG editor and save it without changes
Expected: the content is unchanged.
Actual: the content becomes the following, so the paragraph inside the {{div}} and the closing {{</div>}} are lost:
{noformat}
before
<div class="red">
after
{noformat}
Cause: each HTML block is parsed as its own {{html}} macro ({{clean=false}}), so the opening {{<div class="red">}} and the closing {{</div>}} become two unbalanced macros, with the Markdown content as normal blocks between them. The WYSIWYG editor can't round-trip an unbalanced {{<div>}}.
Possible solution: parse the whole {{<div>…</div>}} block, content included, into a single {{html}} macro with {{clean=false}}, and render that macro back as the {{<div>}} block in Markdown.
For {{<div>}}, fixed by MARKDOWN-56 (8.10.0): a {{<div>}} whose opening and closing tags are each alone in their HTML block, balanced at the same nesting level, is now parsed as a Group. The problem remains for other HTML tags written the same way (e.g. {{<details>}}, {{<section>}}), and for {{<div>}}s that don't follow that form. |
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