rustdoc: Fix redundant_explicit_links incorrectly firing (or not firing) under certain scenarios

[tonywu6]

Hi! I found some issues with the rustdoc::redundant_explicit_links lint while working on a personal project.

• After skipping a link that contains inline markups, the lint would incorrectly skip all the remaining links.

  For example, with the following snippet, the lint is fired for [Option][Option], but not [Result][Result]:

  //! [Option][Option]
  //! [**u8**][u8]     (skipped)
  //! [Result][Result]
  

  Happening because of a ? causing a loop to bail early:

  rust/src/librustdoc/passes/lint/redundant_explicit_links.rs

  Line 107 in a4a37ed

  let display_link = link_data.resolvable_link.clone()?;

• The lint is fired for links that specify titles (like [link](link "title")), except that wouldn't be applicable because it's not possible to specify a title without there also being an explicit target. For example:

  error: redundant explicit link target
  --> <anon>:5:12
    |
  5 | /// [drop](drop "This function is not magic")
    |      ----  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ explicit target is redundant
    |      |
    |      because label contains path that resolves to same destination
    |
    = note: when a link's destination is not specified,
            the label is used to resolve intra-doc links
  help: remove explicit link target
    |
  5 - /// [drop](drop "This function is not magic")
  5 + /// [drop]
    |
  

These are found as of:

rustdoc 1.97.0-nightly (1b8f2e46e 2026-04-17)
binary: rustdoc
commit-hash: 1b8f2e46e14b08208a53585570edd9206374aae8
commit-date: 2026-04-17
host: aarch64-apple-darwin
release: 1.97.0-nightly
LLVM version: 22.1.2

(Note: I ran ./x test tests/rustdoc-ui locally, but not ./x tidy due to my slow internet. There was an unrelated failed test at tests/rustdoc-ui/ice-bug-report-url.rs which I'm not sure about)

[rustbot]

r? @lolbinarycat

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[lolbinarycat]

Thanks, and well done!

@bors r+ rollup

[rust-bors]

📌 Commit b967de6 has been approved by lolbinarycat

It is now in the queue for this repository.