`single_range_in_vec_init` should detect all kind of ranges

[samueltardieu]

Description

Right now, it looks like only a..b ranges are recognized. ..a, a.., and a..=b won't trigger the lint.

clippy_utils::higher::Range might be useful here.

Version

rustc 1.95.0-nightly (366a1b93e 2026-02-03)
binary: rustc
commit-hash: 366a1b93e7f466ebe559477add05f064873d0c71
commit-date: 2026-02-03
host: x86_64-unknown-linux-gnu
release: 1.95.0-nightly
LLVM version: 22.1.0

Additional Labels

No response

[JSorngard]

Possible reproducer: https://play.rust-lang.org/?version=stable&mode=debug&edition=2024&gist=ed39f90831f528bc21f5db251ca604c6

From the reddit thread where the bug was discussed: https://www.reddit.com/r/rust/s/OyVxUVoahT

[samueltardieu]

Possible reproducer: https://play.rust-lang.org/?version=stable&mode=debug&edition=2024&gist=ed39f90831f528bc21f5db251ca604c6

I would even expect single_element_loop in this example. A better reproducer for the current issue would be akin _ = [..10];.

[Carlos-Chong200]

@rustbot claim

[Carlos-Chong200]

Hi @samueltardieu ! I’m interested in working on this issue.
Is it still open and looking for a contribution?

[samueltardieu]

Sure

[zayutaha]

Hi!

@samueltardieu If Carlos is done with it, would it be okay for me to take over?

[samueltardieu]

If Carlos is done with it, would it be okay for me to take over?

Sure!

[zayutaha]

@rustbot claim