Hyphen on a new line doesn't return correct html #480

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claunia · 2026-01-29T14:37:48Z

claunia commented

2026-01-29 14:37:48 +00:00

Originally created by @conceptworld on GitHub (Aug 11, 2021).

If I send the following plain text to Markdown.ToHtml:

First line\nSecond line\n-

(Notice that there is single hyphen in a new line above)

Then the method returns

<h2>First lineSecond line</h2>

There are no <br> for new lines and h2 is applied to all the lines above the hyphen.

This is a major issue as many users use hyphens for simple demarcation.

Also I don't think single hyphen should work this way. 2 or 3 hyphens should result in markdown formatting.

Thanks.

Originally created by @conceptworld on GitHub (Aug 11, 2021). If I send the following plain text to Markdown.ToHtml: First line\nSecond line\n- (Notice that there is single hyphen in a new line above) Then the method returns <h2>First lineSecond line</h2> There are no <br> for new lines and h2 is applied to all the lines above the hyphen. This is a major issue as many users use hyphens for simple demarcation. Also I don't think single hyphen should work this way. 2 or 3 hyphens should result in markdown formatting. Thanks.

claunia added the invalid label 2026-01-29 14:37:48 +00:00

claunia closed this issue

2026-01-29 14:37:48 +00:00

claunia commented

2026-01-29 14:37:49 +00:00

@xoofx commented on GitHub (Aug 11, 2021):

All CommonMark implementation should follow the same behavior (unless we broke something recently in markdig) as shown on babelmark

There are no
for new lines and h2 is applied to all the lines above the hyphen.
This is a major issue as many users use hyphens for simple demarcation.
Also I don't think single hyphen should work this way. 2 or 3 hyphens should result in markdown formatting.

This is the specs we are following https://spec.commonmark.org/0.29/#thematic-breaks

@xoofx commented on GitHub (Aug 11, 2021): All CommonMark implementation should follow the same behavior (unless we broke something recently in markdig) as shown on [babelmark](https://babelmark.github.io/?text=First+line%0ASecond+line%0A-%0A%0A) > There are no <br> for new lines and h2 is applied to all the lines above the hyphen. > This is a major issue as many users use hyphens for simple demarcation. > Also I don't think single hyphen should work this way. 2 or 3 hyphens should result in markdown formatting. This is the specs we are following https://spec.commonmark.org/0.29/#thematic-breaks

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Reference: starred/markdig#480