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Weird formatting of whitespace in between code and in-line comments

C-bugCategory: this is a bug; use also I-* labels for specific bug kinds, e.g. I-non-idempotency or I-ICECategory: this is a bug; use also I-* labels for specific bug kinds, e.g. I-non-idempotency or I-ICE

needs-triageThis issue or PR needs triaging to determine its status. Remove label once sufficiently triaged.This issue or PR needs triaging to determine its status. Remove label once sufficiently triaged.

Status: Open.

#6896 In rust-lang/rustfmt;

· Robbepop opened on May 13, 2026

file-lines can't partially format trait bounds lists

C-bugCategory: this is a bug; use also I-* labels for specific bug kinds, e.g. I-non-idempotency or I-ICECategory: this is a bug; use also I-* labels for specific bug kinds, e.g. I-non-idempotency or I-ICE

needs-triageThis issue or PR needs triaging to determine its status. Remove label once sufficiently triaged.This issue or PR needs triaging to determine its status. Remove label once sufficiently triaged.

Status: Open.

#6894 In rust-lang/rustfmt;

· randomPoison opened on May 12, 2026

fn_params_layout = "Vertical" removes single argument's trailing comma

C-bugCategory: this is a bug; use also I-* labels for specific bug kinds, e.g. I-non-idempotency or I-ICECategory: this is a bug; use also I-* labels for specific bug kinds, e.g. I-non-idempotency or I-ICE

needs-triageThis issue or PR needs triaging to determine its status. Remove label once sufficiently triaged.This issue or PR needs triaging to determine its status. Remove label once sufficiently triaged.

Status: Open.

#6889 In rust-lang/rustfmt;

· jasonaowen opened on May 10, 2026

format_strings breaks escaped character when string too long

C-bugCategory: this is a bug; use also I-* labels for specific bug kinds, e.g. I-non-idempotency or I-ICECategory: this is a bug; use also I-* labels for specific bug kinds, e.g. I-non-idempotency or I-ICE

S-has-mcveStatus: a Minimal Complete and Verifiable Example has been found for this issueStatus: a Minimal Complete and Verifiable Example has been found for this issue

UO-format_stringsUnstable option: format_stringsUnstable option: format_strings

Status: Open.

#6888 In rust-lang/rustfmt;

· t-webber opened on May 9, 2026

Misses some files but catching others in big workspace

C-bugCategory: this is a bug; use also I-* labels for specific bug kinds, e.g. I-non-idempotency or I-ICECategory: this is a bug; use also I-* labels for specific bug kinds, e.g. I-non-idempotency or I-ICE

needs-triageThis issue or PR needs triaging to determine its status. Remove label once sufficiently triaged.This issue or PR needs triaging to determine its status. Remove label once sufficiently triaged.

S-needs-reproStatus: this issue has no reproduction and needs a reproduction to make progressStatus: this issue has no reproduction and needs a reproduction to make progress

Status: Open.

#6887 In rust-lang/rustfmt;

· Narfinger opened on May 8, 2026

file-lines can't format trait definition contents without formatting the header

C-bugCategory: this is a bug; use also I-* labels for specific bug kinds, e.g. I-non-idempotency or I-ICECategory: this is a bug; use also I-* labels for specific bug kinds, e.g. I-non-idempotency or I-ICE

UO-file_linesUnstable option: file_linesUnstable option: file_lines

Status: Open.

#6885 In rust-lang/rustfmt;

· randomPoison opened on May 5, 2026

file-lines can't partially format where clauses

C-bugCategory: this is a bug; use also I-* labels for specific bug kinds, e.g. I-non-idempotency or I-ICECategory: this is a bug; use also I-* labels for specific bug kinds, e.g. I-non-idempotency or I-ICE

UO-file_linesUnstable option: file_linesUnstable option: file_lines

Status: Open.

#6872 In rust-lang/rustfmt;

· randomPoison opened on Apr 18, 2026

Formatting float ranges may result in invalid code

A-matchesArea: match arms, patterns, blocks, etcArea: match arms, patterns, blocks, etc

C-bugCategory: this is a bug; use also I-* labels for specific bug kinds, e.g. I-non-idempotency or I-ICECategory: this is a bug; use also I-* labels for specific bug kinds, e.g. I-non-idempotency or I-ICE

F-impacts-stable-default-formatExpected formatting impact: affects stable default format configuration (caution)Expected formatting impact: affects stable default format configuration (caution)

I-invalid-codeIssue: formatting causes compile-pass code to compile-failIssue: formatting causes compile-pass code to compile-fail

S-has-mcveStatus: a Minimal Complete and Verifiable Example has been found for this issueStatus: a Minimal Complete and Verifiable Example has been found for this issue

Status: Open.

#6869 In rust-lang/rustfmt;

· ur-fault opened on Apr 17, 2026

file-lines can't partially format function signatures

C-bugCategory: this is a bug; use also I-* labels for specific bug kinds, e.g. I-non-idempotency or I-ICECategory: this is a bug; use also I-* labels for specific bug kinds, e.g. I-non-idempotency or I-ICE

UO-file_linesUnstable option: file_linesUnstable option: file_lines

Status: Open.

#6868 In rust-lang/rustfmt;

· randomPoison opened on Apr 17, 2026

file-lines modifies unselected fn signature lines when fn body is selected

C-bugCategory: this is a bug; use also I-* labels for specific bug kinds, e.g. I-non-idempotency or I-ICECategory: this is a bug; use also I-* labels for specific bug kinds, e.g. I-non-idempotency or I-ICE

S-has-mcveStatus: a Minimal Complete and Verifiable Example has been found for this issueStatus: a Minimal Complete and Verifiable Example has been found for this issue

UO-file_linesUnstable option: file_linesUnstable option: file_lines

Status: Open.

#6864 In rust-lang/rustfmt;

· randomPoison opened on Apr 15, 2026

How should group_imports handle visibility?

C-discussionCategory: discussionCategory: discussion

T-styleRelevant to the style team.Relevant to the style team.

UO-group_importsUnstable option: group_importsUnstable option: group_imports

Status: Open.

#6861 In rust-lang/rustfmt;

· camsteffen opened on Apr 13, 2026

Bad hard-tabs handling with blocks in long expressions

A-whitespaceArea: whitespace and its handlingArea: whitespace and its handling

C-bugCategory: this is a bug; use also I-* labels for specific bug kinds, e.g. I-non-idempotency or I-ICECategory: this is a bug; use also I-* labels for specific bug kinds, e.g. I-non-idempotency or I-ICE

I-poor-formattingIssue: poor formattingIssue: poor formatting

Status: Open.

#6859 In rust-lang/rustfmt;

· edwloef opened on Apr 8, 2026