[GH-ISSUE #608] Support `allowlist` option for MD040 #480

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opened 2026-03-03 01:27:17 +03:00 by kerem · 0 comments

kerem commented

2026-03-03 01:27:17 +03:00

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Originally created by @chenxsan on GitHub (Oct 16, 2022).
Original GitHub issue: https://github.com/DavidAnson/markdownlint/issues/608

While MD040 requires us to specify a language, it doesn't specify which languages we can use, which means we can use whatever we want as long as it's not an empty one.

But in the cases of syntax highlighting, tools like refractor will throw an error when we feed it an unknown language. It would be great if we can configure MD040 with an allowlist.

E.g.,

"MD040": { "allowlist": ["js", "css", "html"] },

Originally created by @chenxsan on GitHub (Oct 16, 2022). Original GitHub issue: https://github.com/DavidAnson/markdownlint/issues/608 While MD040 requires us to specify a language, it doesn't specify which languages we can use, which means we can use whatever we want as long as it's not an empty one. But in the cases of syntax highlighting, tools like [refractor](https://github.com/wooorm/refractor#data) will throw an error when we feed it an unknown language. It would be great if we can configure MD040 with an `allowlist`. E.g., ``` "MD040": { "allowlist": ["js", "css", "html"] }, ```