Markdown.ToPlainText() returns HTML tags for mathematics #479

New Issue

claunia · 2026-01-29T14:37:48Z

claunia commented

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

Originally created by @Sleepyowl on GitHub (Aug 12, 2021).

Invalid conversion to plain text for mathematic blocks:

Repro:

Markdown.ToPlainText("$$ x_{1}=\frac{-b + \\sqrt{b^{2} - 4ac}}{2a} $$", new MarkdownPipelineBuilder().UseMathematics().Build())

expected result: no HTML tags
actual result: <span class="math">$x_{1}=\frac{-b + \sqrt{b^{2} - 4ac}}{2a}$</span>

Originally created by @Sleepyowl on GitHub (Aug 12, 2021). Invalid conversion to plain text for mathematic blocks: Repro: ``` Markdown.ToPlainText("$$ x_{1}=\frac{-b + \\sqrt{b^{2} - 4ac}}{2a} $$", new MarkdownPipelineBuilder().UseMathematics().Build()) ``` expected result: no HTML tags actual result: `<span class="math">$x_{1}=\frac{-b + \sqrt{b^{2} - 4ac}}{2a}$</span>`

claunia added the enhancement PR Welcome! labels 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 22, 2021):

Plain text does not support many extensions. You will need to create a PR to fix it.

@xoofx commented on GitHub (Aug 22, 2021): Plain text does not support many extensions. You will need to create a PR to fix it.

claunia commented

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

@Sleepyowl commented on GitHub (Aug 24, 2021):

Makes sense.

Giving this a second thought, simply removing html tags and outputting source LaTeX is not “Plain Text” enough for my purposes.

If you’re OK with dragging in LaTeX parser dependency, I’ll create a PR when (or to be honest, more like “if”) I get it done.

@Sleepyowl commented on GitHub (Aug 24, 2021): Makes sense. Giving this a second thought, simply removing html tags and outputting source LaTeX is not “Plain Text” enough for my purposes. If you’re OK with dragging in LaTeX parser dependency, I’ll create a PR when (or to be honest, more like “if”) I get it done.

claunia commented

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

@xoofx commented on GitHub (Aug 24, 2021):

If you’re OK with dragging in LaTeX parser dependency, I’ll create a PR when (or to be honest, more like “if”) I get it done.

Unfortunately, Markdig has a policy to not take any dependencies. As Markdig can embed any kind of non-markdown content (HTML, custom content like LaTex...etc.), it is not practical to support these scenarios (that can be very app/end-user specific and difficult to fit-for-all)
Though, the markdig API should provide enough pluggability to develop what you are looking for as an extension, outside of the Markdig lib/repo.

@xoofx commented on GitHub (Aug 24, 2021): > If you’re OK with dragging in LaTeX parser dependency, I’ll create a PR when (or to be honest, more like “if”) I get it done. Unfortunately, Markdig has a policy to not take any dependencies. As Markdig can embed any kind of non-markdown content (HTML, custom content like LaTex...etc.), it is not practical to support these scenarios (that can be very app/end-user specific and difficult to fit-for-all) Though, the markdig API should provide enough pluggability to develop what you are looking for as an extension, outside of the Markdig lib/repo.

claunia commented

2026-01-29 14:37:50 +00:00

@Sleepyowl commented on GitHub (Aug 24, 2021):

Ok I went with a simple approach for the PR: I've added checks for EnableHtml* flags to the extension.

I cannot figure out though how to link the PR to this issue, but here it is: https://github.com/xoofx/markdig/pull/570

@Sleepyowl commented on GitHub (Aug 24, 2021): Ok I went with a simple approach for the PR: I've added checks for EnableHtml* flags to the extension. I cannot figure out though how to link the PR to this issue, but here it is: https://github.com/xoofx/markdig/pull/570

claunia referenced this issue

2026-01-29 14:49:09 +00:00

[PR #479] [MERGED] Fix NETSDK1045 CI build failure #1056

claunia referenced this issue

2026-01-29 14:49:13 +00:00

[PR #479] Fix NETSDK1045 CI build failure #1061

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