Dear Lazyweb/Twitterverse, Do you have a favourite Markdown AST? I am already looking at Pandoc's AST for inspiration, but other examples would be useful. Any programming language is fine, I am capable of consuming ideas from most genres. Thanks, D.

Feb 3, 2020 Β· 8:23 AM UTC

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Replying to @dsilverstone
In Crystal-land we are suggesting github.com/icyleaf/markd as the Markdown implementation nowadays. I don’t have a baseline to compare the implementation to.

GitHub - icyleaf/markd: Yet another markdown parser, Compliant to CommonMark specification, written...

Yet another markdown parser, Compliant to CommonMark specification, written in Crystal. - GitHub - icyleaf/markd: Yet another markdown parser, Compliant to CommonMark specification, written in Crys...

github.com
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A brief glance suggests github.com/icyleaf/markd/blo… is the AST -- is that right? (While I said any language will do, Crystal and Ruby are not ones I'm yet familiar with navigating)
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Replying to @dsilverstone
Being not so far from, but probably far simpler than, HTML, maybe html5ever for inspiration?
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I would prefer an AST which was moderately easily returned to markdown, rather than one which is lower level (which I'd consider HTML to be) but not a bad idea if other options aren't useful inspiration enough, thanks.
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Replying to @dsilverstone
I'd be interested to hear what the application is β€” I like MarkDown, but whenever I try to move beyond generating a single chunk of HTML find myself having to reach for non-standard extensions.
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I am working on a tool with a friend which consumes markdown as a semi-structured input format. In order to better report errors in the input, I want to be able to point at the line (and column perhaps) where the error exists.
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Replying to @dsilverstone
What is an AST?
Replying to @dsilverstone
The CommonMark dingus produces and AST (in XML form) as well as rendered output, so could be a useful reference point.
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The spec is definitely useful, though it doesn't really come out and say "this is the AST" it's more of a set of rules for identifying and parsing the components. AFAICT. Perhaps I missed an AST definition in my skim?