why does this HTML block start and end on the same line?
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Description
Why is the HTML block (spec 4.6) closed on the same line when
https://github.com/commonmark/commonmark-spec/blob/d5706b9553d4665ca730524323d484880440186c/spec.txt#L2368 says that
[An HTML block] ends with the first subsequent line that meets a matching end condition. (emphasis mine)
cmark << EOF
<!-- comment --> 0
1
-->
2
EOF
<!-- raw HTML omitted -->
<p>1
-->
2
EOF</p>
I think cmark parses the comment as an HTML block. It couldn't be a raw HTML comment (spec 6.6) otherwise "0" would surface inside a <p>. So it seems that, contrary to the specification, the HTML block ends on the same line where it starts, instead of ending between "1" and "2".
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Research direction
Reproduce the behavior with the cmark command and input shown in the issue, then compare the result with the HTML block rules at the linked spec.txt location. Trace the HTML block parsing path to determine whether the same-line close is intentional or a bug, and add regression coverage showing the expected boundary between “1” and “2”.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- c
- Domain
- compilers
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Clearly specified
- Newbie friendliness
- 45/100