Samuel Tardieu fc4b3fa3f9 Rollup merge of #132748 - lolbinarycat:rustdoc-intra-doc-link-warn-more-54191, r=GuillaumeGomez
get rid of some false negatives in rustdoc::broken_intra_doc_links

rustdoc will not try to do intra-doc linking if the "path" of a link looks too much like a "real url".

however, only inline links (`[text](url)`) can actually contain a url, other types of links (reference links, shortcut links) contain a *reference* which is later resolved to an actual url.

the "path" in this case cannot be a url, and therefore it should not be skipped due to looking like a url.

fixes https://github.com/rust-lang/rust/issues/54191

to minimize the number of false positives that will be introduced, the following heuristic is used:

If there's no backticks, be lenient revert to old behavior.
This is to prevent churn by linting on stuff that isn't meant to be a link.
only shortcut links have simple enough syntax that they
are likely to be written accidentlly, collapsed and reference links
need 4 metachars, and reference links will not usually use
backticks in the reference name.
therefore, only shortcut syntax gets the lenient behavior.
here's a truth table for how link kinds that cannot be urls are handled:

|              |  is shortcut link  | not shortcut link |
|--------------|--------------------|-------------------|
| has backtick |    never ignore    |    never ignore   |
| no backtick  | ignore if url-like |    never ignore   |
2025-08-02 11:24:20 +02:00
2025-07-25 15:08:39 +02:00
2025-07-13 15:45:56 +08:00

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