Stabilize `feature(trim_prefix_suffix)` (`{str, [T], Path}::trim_prefix` and `{str, [T]}::trim_suffix`) by zachs18 · Pull Request #160544 · rust-lang/rust

zachs18 · 2026-08-05T06:13:13Z

Closes #142312 (tracking issue)

FCP completed here. There was discussion during FCP about a possibly adding strip_circumfix, but that wasn't mentioned as blocking.

r? libs-api

rustbot · 2026-09-15T20:23:56Z

This PR was rebased onto a different main commit. Here's a range-diff highlighting what actually changed.

Rebasing is a normal part of keeping PRs up to date, so no action is needed—this note is just to help reviewers.

zachs18 · 2026-09-15T21:46:18Z

backlinking relnotes tracking issue: #158984

clarfonthey · 2026-09-16T19:24:23Z

r? libs

clarfonthey · 2026-09-16T20:01:53Z

@bors try

To verify that the cfg_attr(bootstrap, …) are still needed, since this is about a month old.

Or, well, just verify that I can merge this now.

Stabilize `feature(trim_prefix_suffix)` (`{str, [T], Path}::trim_prefix` and `{str, [T]}::trim_suffix`)

rust-bors · 2026-09-16T21:01:08Z

☀️ Try build successful (CI)
Build commit: 954cc01 (954cc01697e1fe8d76f34d09c97590457cabdcdb)
Base parent: 92801ed (92801ede88f6c10e34df6976a4cfde40142585f2)

clarfonthey · 2026-09-16T21:02:02Z

@bors r+ rollup

rust-bors · 2026-09-16T21:02:04Z

📌 Commit 9559b38 has been approved by clarfonthey

It is now in the queue for this repository.

…ix, r=clarfonthey Stabilize `feature(trim_prefix_suffix)` (`{str, [T], Path}::trim_prefix` and `{str, [T]}::trim_suffix`) Closes rust-lang#142312 (tracking issue) FCP completed [here](rust-lang#142312 (comment)). There was discussion during FCP about a possibly adding `strip_circumfix`, but that wasn't mentioned as blocking. r? libs-api

Rollup of 12 pull requests Successful merges: - #161596 (coretests: Add more pattern tests.) - #162796 (libtest: do not early exit from test runners) - #162844 (Add loan reachability traces to polonius MIR dumps) - #158186 (Guarantee 8 bytes of alignment of RawWakerVTable) - #160108 (Stabilize `windows_process_extensions_main_thread_handle`) - #160212 (traits: Fix rigid alias liveness matching) - #160544 (Stabilize `feature(trim_prefix_suffix)` (`{str, [T], Path}::trim_prefix` and `{str, [T]}::trim_suffix`)) - #161305 (Use the entire type of a dropped local to compute variance (edge direction) for Polonius alpha) - #161838 (tests: accept LLVM 24 optimization in this test) - #162805 (Add `must_use` lint to `ExitCode`) - #162825 (core: Add examples for `debug_closure_helpers`) - #162856 (Stabilize CommandExt::show_window)

…ix, r=clarfonthey Stabilize `feature(trim_prefix_suffix)` (`{str, [T], Path}::trim_prefix` and `{str, [T]}::trim_suffix`) Closes rust-lang#142312 (tracking issue) FCP completed [here](rust-lang#142312 (comment)). There was discussion during FCP about a possibly adding `strip_circumfix`, but that wasn't mentioned as blocking. r? libs-api

Rollup of 16 pull requests Successful merges: - #161596 (coretests: Add more pattern tests.) - #162796 (libtest: do not early exit from test runners) - #162844 (Add loan reachability traces to polonius MIR dumps) - #162876 (Move operations out of `rustc_middle::query::job`) - #160108 (Stabilize `windows_process_extensions_main_thread_handle`) - #160212 (traits: Fix rigid alias liveness matching) - #160544 (Stabilize `feature(trim_prefix_suffix)` (`{str, [T], Path}::trim_prefix` and `{str, [T]}::trim_suffix`)) - #161246 (Normalize non-rigid aliases in ty_known_to_outlive) - #161305 (Use the entire type of a dropped local to compute variance (edge direction) for Polonius alpha) - #161838 (tests: accept LLVM 24 optimization in this test) - #162805 (Add `must_use` lint to `ExitCode`) - #162825 (core: Add examples for `debug_closure_helpers`) - #162841 (enable asm tests for xtensa targets) - #162842 (reintroduce check RibKind::ConstParamTy did in direct consts) - #162845 (mgca: fix issue with mismatched array valtree/valtree tys) - #162856 (Stabilize CommandExt::show_window)

…ix, r=clarfonthey Stabilize `feature(trim_prefix_suffix)` (`{str, [T], Path}::trim_prefix` and `{str, [T]}::trim_suffix`) Closes rust-lang#142312 (tracking issue) FCP completed [here](rust-lang#142312 (comment)). There was discussion during FCP about a possibly adding `strip_circumfix`, but that wasn't mentioned as blocking. r? libs-api

…uwer Rollup of 24 pull requests Successful merges: - #161596 (coretests: Add more pattern tests.) - #162177 (Properly implement the gpu-kernel ABI for amdgpu) - #162411 (Make Receiver `#[rustc_dyn_incompatible_trait]`) - #162760 (yeet alias new_from_def_id) - #162796 (libtest: do not early exit from test runners) - #162844 (Add loan reachability traces to polonius MIR dumps) - #162876 (Move operations out of `rustc_middle::query::job`) - #160108 (Stabilize `windows_process_extensions_main_thread_handle`) - #160212 (traits: Fix rigid alias liveness matching) - #160544 (Stabilize `feature(trim_prefix_suffix)` (`{str, [T], Path}::trim_prefix` and `{str, [T]}::trim_suffix`)) - #161305 (Use the entire type of a dropped local to compute variance (edge direction) for Polonius alpha) - #161838 (tests: accept LLVM 24 optimization in this test) - #162312 (core: Rewrite docs for try_as_dyn) - #162785 (Avoid creating overlapping assignments in MatchBranchSimplification) - #162805 (Add `must_use` lint to `ExitCode`) - #162825 (core: Add examples for `debug_closure_helpers`) - #162841 (enable asm tests for xtensa targets) - #162842 (reintroduce check RibKind::ConstParamTy did in direct consts) - #162845 (mgca: fix issue with mismatched array valtree/valtree tys) - #162856 (Stabilize CommandExt::show_window) - #162865 (Complex conjugate, negation and default) - #162874 (Add support for `annotate_snippets::snippet::AnnotationKind::Visible`) - #162881 (Simplify the macro for forwarding Decoder methods ) - #162888 (Fix a typo on the Armv7-R platform docs page)

…uwer Rollup of 23 pull requests Successful merges: - #161596 (coretests: Add more pattern tests.) - #162411 (Make Receiver `#[rustc_dyn_incompatible_trait]`) - #162760 (yeet alias new_from_def_id) - #162796 (libtest: do not early exit from test runners) - #162844 (Add loan reachability traces to polonius MIR dumps) - #162876 (Move operations out of `rustc_middle::query::job`) - #160108 (Stabilize `windows_process_extensions_main_thread_handle`) - #160212 (traits: Fix rigid alias liveness matching) - #160544 (Stabilize `feature(trim_prefix_suffix)` (`{str, [T], Path}::trim_prefix` and `{str, [T]}::trim_suffix`)) - #161305 (Use the entire type of a dropped local to compute variance (edge direction) for Polonius alpha) - #161838 (tests: accept LLVM 24 optimization in this test) - #162312 (core: Rewrite docs for try_as_dyn) - #162785 (Avoid creating overlapping assignments in MatchBranchSimplification) - #162805 (Add `must_use` lint to `ExitCode`) - #162825 (core: Add examples for `debug_closure_helpers`) - #162841 (enable asm tests for xtensa targets) - #162842 (reintroduce check RibKind::ConstParamTy did in direct consts) - #162845 (mgca: fix issue with mismatched array valtree/valtree tys) - #162856 (Stabilize CommandExt::show_window) - #162865 (Complex conjugate, negation and default) - #162874 (Add support for `annotate_snippets::snippet::AnnotationKind::Visible`) - #162881 (Simplify the macro for forwarding Decoder methods ) - #162888 (Fix a typo on the Armv7-R platform docs page)

Rollup merge of #160544 - zachs18:stabilize-trim_prefix_suffix, r=clarfonthey Stabilize `feature(trim_prefix_suffix)` (`{str, [T], Path}::trim_prefix` and `{str, [T]}::trim_suffix`) Closes #142312 (tracking issue) FCP completed [here](#142312 (comment)). There was discussion during FCP about a possibly adding `strip_circumfix`, but that wasn't mentioned as blocking. r? libs-api

rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-libs Relevant to the library team, which will review and decide on the PR/issue. labels Aug 5, 2026

rustbot assigned Amanieu Aug 5, 2026

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rustbot added T-libs-api [DEPRECATED; DO NOT USE] and removed T-libs Relevant to the library team, which will review and decide on the PR/issue. labels Aug 5, 2026