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fc4b3fa3f9
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 |