Changelog

[Unreleased]

[1.4.9] 2019-10-07

Changed

• Update rustc-ap-* crates to 606.0.0.

Fixed

• Fix aligning comments of different group
• Fix flattening imports with a single self.
• Fix removing attributes on function parameters.
• Fix removing impl keyword from opaque type.

[1.4.8] 2019-09-08

Changed

• Update rustc-ap-* crates to 583.0.0.

[1.4.7] 2019-09-06

Added

• Add --config command line option.

Changed

• Update rustc-ap-* crates to 581.0.0.
• rustfmt now do not warn against trailing whitespaces inside macro calls.

Fixed

• Fix merge_imports generating invalid code.
• Fix removing discriminant values on enum variants.
• Fix modules defined inside cfg_if! not being formatted.
• Fix minor formatting issues.

[1.4.6] 2019-08-28

Added

• Add --message-format command line option to cargo-fmt.
• Add -l,--files-with-diff command line option to rustfmt.
• Add json emit mode.

Fixed

• Fix removing attributes on struct pattern's fields.
• Fix non-idempotent formatting of match arm.
• Fix merge_imports generating invalid code.
• Fix imports with #![macro_use] getting reordered with reorder_imports.
• Fix calculation of line numbers in checkstyle output.
• Fix poor formatting of complex fn type.

[1.4.5] 2019-08-13

Fixed

• Fix generating invalid code when formatting an impl block with const generics inside a where clause.
• Fix adding a trailing space after a dyn keyword which is used as a macro argument by itself.

[1.4.4] 2019-08-06

Fixed

• Fix cargo fmt incorrectly formatting crates that is not part of the workspace or the path dependencies.
• Fix removing a trailing comma from a tuple pattern.

[1.4.3] 2019-08-02

Changed

• Update rustc-ap-* crates to 546.0.0.

Fixed

• Fix an underscore pattern getting removed.

[1.4.2] 2019-07-31

Changed

• Explicitly require the version of rustfmt-config_proc_macro to be 0.1.2 or later.

[1.4.1] 2019-07-30

Changed

• Update rustc-ap-* crates to 542.0.0.

[1.4.0] 2019-07-29

Added

• Add new attribute rustfmt::skip::attributes to prevent rustfmt from formatting an attribute #3665

Changed

• Update rustc-ap-* crates to 541.0.0.
• Remove multiple semicolons.

[1.3.3] 2019-07-15

Added

• Add --manifest-path support to cargo fmt (#3683).

Fixed

• Fix cargo fmt -- --help printing nothing (#3620).
• Fix inserting an extra comma (#3677).
• Fix incorrect handling of CRLF with file-lines (#3684).
• Fix print-config=minimal option (#3687).

[1.3.2] 2019-07-06

Fixed

• Fix rustfmt crashing when await! macro call is used in a method chain.
• Fix rustfmt not recognizing a package whose name differs from its directory's name.

[1.3.1] 2019-06-30

Added

• Implement the Display trait on the types of Config.

Changed

• ignore configuration option now only supports paths separated by /. Windows-style paths are not supported.
• Running cargo fmt in a sub-directory of a project is now supported.

Fixed

• Fix bugs that may cause rustfmt to crash.

[1.3.0] 2019-06-09

Added

• Format modules defined inside cfg_if macro calls #3600

Changed

• Change option format_doc_comment to format_code_in_doc_comment.
• use_small_heuristics changed to be an enum and stabilised. Configuration options are now ready for 1.0.
• Stabilise fn_args_density configuration option and rename it to fn_args_layout #3581
• Update rustc-ap-* crates to 486.0.0
• Ignore sub-modules when skip-children is used #3607
• Removed bitrig support #3608

Fixed

• wrap_comments should not imply format_doc_comments #3535
• Incorrect handling of const generics #3555
• Add the handling for vec! with paren inside macro #3576
• Format trait aliases with where clauses #3586
• Catch panics from the parser while rewriting macro calls #3589
• Fix erasing inner attributes in struct #3593
• Inline the attribute with its item even with the macro_use attribute or when reorder_imports is disabled #3598
• Fix the bug add unwanted code to impl #3602

[1.2.2] 2019-04-24

Fixed

• Fix processing of ignore paths #3522
• Attempt to format attributes if only they exist #3523

[1.2.1] 2019-04-18

Added

• Add --print-config current CLI option b473e65
• Create GitHub page for Configuration.md #3485

Fixed

• Keep comment appearing between parameter's name and its type #3491
• Do not delete semicolon after macro call with square brackets #3500
• Fix --version CLI option #3506
• Fix duplication of attributes on a match arm's body #3510
• Avoid overflowing item with attributes #3511

[1.2.0] 2019-03-27

Added

• Add new attribute rustfmt::skip::macros to prevent rustfmt from formatting a macro #3454

Changed

• Discard error report in silent_emitter #3466

Fixed

• Fix bad performance on deeply nested binary expressions #3467
• Use BTreeMap to guarantee consistent ordering b4d4b57

[1.1.1] 2019-03-21

Fixed

• Avoid panic on macro inside deeply nested block c9479de
• Fix line numbering in missed spans and handle file_lines in edge cases cdd08da
• Fix formatting of async blocks 1fa06ec
• Avoid duplication on the presence of spaces between macro name and ! #3464

[1.1.0] 2019-03-17

Added

• Add inline_attribute_width configuration option to write an item and its attribute on the same line if their combined width is below a threshold #3409
• Support const generics f0c861b
• Support path clarity module #3448

Changed

• Align loop and while formatting 7d9a2ef
• Support EmitMode::ModifiedLines with stdin input #3424
• Update rustc-ap-* crates to 407.0.0
• Remove trailing whitespaces in missing spans 2d5bc69

Fixed

• Do not remove comment in the case of no arg 8e3ef3e
• Fix Ident of macro+ident gets duplicated error 40ff078
• Format the if expression at the end of the block in a single line 5f3dfe6

[1.0.3] 2019-02-14

Added

• Point unstable options to tracking issues 412dcc7

Changed

• Update rustc-ap-* crates to 373.0.0

[1.0.2] 2019-02-12

Added

• Add a section to the Contributing.md file about version-gating formatting changes 36e2cb0
• Allow specifying package with -p CLI option a8d2591
• Support rustfmt::skip on imports #3289
• Support global rustfmt.toml to be written in user config directory #3280
• Format visibility on trait alias 96a3df3

Changed

• Do not modify original source code inside macro call #3260
• Recognize strings inside comments in order to avoid indenting them baa62c6
• Use Unicode-standard char width to wrap comments or strings a01990c
• Change new line point in the case of no args #3294
• Use the same formatting rule between functions and macros #3298
• Update rustc-ap-rustc_target to 366.0.0, rustc-ap-syntax to 366.0.0, and rustc-ap-syntax_pos to 366.0.0

Fixed

• rewrite_comment: fix block fallback when failing to rewrite an itemized block ab7f4e1
• Catch possible tokenizer panics #3240
• Fix macro indentation on Windows #3266
• Fix shape when formatting return or break expr on statement position #3259
• rewrite_comment: fix block fallback when failing to rewrite an itemized block
• Keep leading double-colon to respect the 2018 edition of rust's paths a2bfc02
• Fix glob and nested global imports 2125ad2
• Do not force trailing comma when using mixed layout #3306
• Prioritize single_line_fn and empty_item_single_line over brace_style #3308
• Fix internal error: left behind trailing whitespace with long lines c2534f5
• Fix attribute duplication #3325
• Fix formatting of strings within a macro 813aa79
• Handle a macro argument with a single keyword 9a7ea6a

[1.0.1] 2018-12-09

Added

• Add a version option 378994b

Changed

• End expressions like return/continue/break with a semicolon #3223
• Update rustc-ap-rustc_target to 306.0.0, rustc-ap-syntax to 306.0.0, and rustc-ap-syntax_pos to 306.0.0

Fixed

• Allow to run a rustfmt command from cargo-fmt even when there is no target a2da636
• Fix un-closed delimiter errors when formatting break labels 40174e9

[1.0.0] 2018-11-19

Changed

• Preserve possibly one whitespace for brace macros 1a3bc79
• Prefer to break arguments over putting output type on the next line 1dd54e6

[0.99.9] 2018-11-15

Changed

• Update rustc-ap-rustc_target to 297.0.0, rustc-ap-syntax to 297.0.0, to rustc-ap-syntax_pos to 297.0.0
• Don't align comments on extern crates dd7add7

[0.99.8] 2018-11-14

Added

• Add overflow_delimited_expr config option to more aggressively allow overflow #3175

Fixed

• Fix the logic for retaining a comment before the arrow in a match #3181
• Do not wrap comments in doctest to avoid failing doctest runs #3183
• Fix comment rewriting that was wrapping code into a line comment #3188
• Fix formatting of unit-struct with where-clause #3200

[0.99.7] 2018-11-07

Changed

• Force a newline after the if condition if there is a different indentation level #3109
• Use correct width when formatting type on local statement #3126
• Treat crates non-alphabetically when ordering 799005f
• Fix formatting of code that is annotated with rustfmt::skip #3113
• Stabilize edition configuration option 9c3ae2d
• cargo-fmt: detect Rust edition in use #3129
• Trim the indentation on macros which heuristically appear to use block-style indentation #3178

Fixed

• Do not remove path disambiugator inside macro #3142
• Improve handling of Windows newlines #3141
• Fix alignment of a struct's fields (struct_field_align_threshold option) with the Visual indent_style #3165
• Fix a bug in formatting markdown lists within comments #3172

[0.99.6] 2018-10-18

Added

• Add enum_discrim_align_threshold option to vertically align enum discriminants cc22869
• Add println!-like heuristic to the fail attribute #3067
• Handle itemized items inside comments #3083
• Add format_doc_comments configuration option to control the formatting of code snippets inside comments #3089

Changed

• Makes brace behavior consistent with empty bodies for traits and impls 2727d41
• Consider a multi-lined array as a block-like expression #3969
• Improve formatting of strings #3073
• Get rid of extra commas in Visual struct literal formatting #3077
• Update rustc-ap-rustc_target to 274.0.0, rustc-ap-syntax to 274.0.0, and rustc-ap-syntax_pos to 274.0.0
• Format macro calls with item-like arguments #3080
• Avoid control flow expressions conditions to go multi line ef59b34
• Simplify multi-lining binop expressions #3101

Fixed

• Do not format a code block in documentation if it is annotated with ignore or text 2bcc3a9
• Fix inconsistent overflow behavior in Visual style #3078
• Fix corner cases of the string formatting implementation #3083
• Do not add parens around lifetimes 0ac68c9
• Catch parser panic in format_snippet 8c4e92a

[0.99.5] 2018-09-25

Added

• Handle leading module separator for 2018 Edition #2952
• Add configuration option normalize_doc_attributes: convert doc attributes to comments #3002

Changed

• Accept 2015 and 2018 instead of Edition2015 and Edition2018 for edition option eec7436
• Support platforms without a timer 46e2a2e
• Update rustc-ap-rustc_target to 263.0.0, rustc-ap-syntax to 263.0.0, and rustc-ap-syntax_pos to 263.0.0

Fixed

• Format of attributes with commas #2971
• Fix optional arg condensing #2972
• Improve formatting of long function parameters #2981
• Fix formatting of raw string literals #2983
• Handle chain with try operators with spaces #2986
• Use correct shape in Visual tuple rewriting #2987
• Impove formatting of arguments with visual_style = "Visual" option #2988
• Change print_diff to output the correct line number 992b179
• Propagate errors about failing to rewrite a macro 6f318e3
• Handle formatting of long function signature #3010
• Fix indent computation of a macro with braces c3edf6d
• Format generics on associated types #3035
• Incorrect indentation of multiline block match expression #3042
• Fix bug in import where two consecutive module separators were possible 98a0ef2
• Prevent right-shifting of block comments with bare lines 5fdb6db

[0.99.4] 2018-08-27

Added

• Handle formatting of underscore imports #2951
• Handle formatting of try blocks #2965

Changed

• Update rustc-ap-rustc_target to 237.0.0, rustc-ap-syntax to 237.0.0, and rustc-ap-syntax_pos to 237.0.0 ca19c9a
• Consider dev channel as nightly for unstable features #2948

Fixed

• Fix formatting of patterns with ellipsis # 2942

[0.99.3] 2018-08-23

Added

• Use path attribute when searching for modules #2901
• Expose FileLines JSON representation to allow external libraries to use the file_lines option #2915

Changed

• Replace ‘--conifig-help’ with ‘--config=help’ cb10e06
• Improve formatting of slice patterns #2912

Fixed

• Format chains with comment #2899
• Fix indentation of formatted macro body #2920
• Fix indentation of block comments f23e6aa

[0.99.2] 2018-08-07

Changed

• Update rustc-ap-rustc_target to 218.0.0, rustc-ap-syntax to 218.0.0, and rustc-ap-syntax_pos to 218.0.0 5c9a2b6
• Combine function-like attributes #2900

Fixed

• Explicitly handle semicolon after the item in statement position d96e3ca
• Fix parsing ‘#’-hiding of rustdoc 2eca09e

[0.99.1] 2018-08-04

Fixed

• fix use statements ordering when a number is present 1928ae7

[0.99.0] 2018-08-03

• 1.0 RC release

Changed

• Clarification in README.md 30fe66b

[0.9.0] 2018-08-01

Added

• Handle raw identifiers 3027c21
• Format async closure 60ce411
• Add max_width option for all heuristics c2ae39e
• Add config option format_macro_matchers to format the metavariable matching patterns in macros 79c5ee8
• Add config option format_macro_bodies to format the bodies of macros 79c5ee8
• Format exitential type fc307ff
• Support raw identifiers in struct expressions f121b1a
• Format Async block and async function 0b25f60

Changed

• Update rustc-ap-rustc_target to 211.0.0, rustc-ap-syntax to 211.0.0, and rustc-ap-syntax_pos to 211.0.0
• Put each nested import on its own line while putting non-nested imports on the same line as much as possible 42ab258
• Respect empty_item_single_line config option when formatting empty impls. Put the where on its own line to improve readability #2771
• Strip leading | in match arm patterns 1d4b988
• Apply short function call heuristic to attributes 3abebf9
• Indent a match guard if the pattern is multiline be4d37d
• Change default newline style to Native 9d8f381
• Improve formatting of series of binop expressions a4cdb68
• Trigger an internal error if we skip formatting due to a lost comment b085113
• Refactor chain formatting #2838

Fixed

• Do not insert spaces around braces with empty body or multiple lines 2f65852
• Allow using mixed layout with comments #2766
• Handle break labels #2726
• fix rewrite_string when a line feed is present 472a2ed
• Fix an anomaly with comments and array literals b28a0cd
• Check for comments after the => in a match arm 6899471

[0.8.0,0.8.1,0.8.2] 2018-05-28

Added

• Use scoped attributes for skip attribute https://github.com/rust-lang/rustfmt/pull/2703

Changed

• Comment options wrap_comments and normalize_comments are reverted back to unstable 416bc4c
• Stabilise reorder_imports and reorder_modules options 7b6d2b4
• Remove spaces_within_parens_and_brackets option d726492
• Stabilise shorthand options: use_try_shorthand, use_field_init_shorthand, and force_explicit_abi 8afe367
• Stabilise remove_nested_parens and set default to true a70f716
• Unstabilise unstable_features dd9c15a
• Remove remove_blank_lines_at_start_or_end_of_block option 2ee8b0e
• Update rustc-ap-syntax to 146.0.0 and rustc-ap-rustc_target to 146.0.0 2c275a2
• Audit the public API #2639

Fixed

• Handle code block in doc comment without rust prefix f1974e2

[0.7.0] 2018-05-14

Added

• Add integration tests against crates in the rust-lang-nursery c79f39a

Changed

• Update rustc-ap-syntax to 128.0.0 and ustc-ap-rustc_target to 128.0.0 195395f
• Put operands on its own line when each fits in a single line f8439ce
• Improve CLI options 55ac062 1869888 798bffb 4d9de48 eca7796 8396da1 5d9f5aa

Fixed

• Use correct line width for list attribute 61a401a
• Avoid flip-flopping impl items when reordering them 37c216c
• Formatting breaks short lines when max_width is less than 100 9b36156
• Fix variant “Mixed” of imports_layout option 8c8676c
• Improve handling of long lines f885039
• Fix up lines exceeding max width 51c07f4
• Fix handling of modules in non_modrs_mods style cf573e8
• Do not duplicate attributes on use items e59ceaf
• Do not insert an extra brace in macros with native newlines 4c9ef93

[0.6.1] 2018-05-01

Changed

• Change the default value of imports_indent to IndentStyle::Block https://github.com/rust-lang/rustfmt/pull/2662

Fixed

• Handle formatting of auto traits 5b5a72c
• Use consistent formatting for empty enum and struct https://github.com/rust-lang/rustfmt/pull/2656

[0.6.0] 2018-04-20

Changed

• Improve public API 8669004

[0.5.0] 2018-04-20

Added

• Add verbose-diff CLI option 5194984

Changed

• Update rustc-ap-syntax to 103.0.0 dd807e2
• Refactor to make a sensible public API ca610d3

Fixed

• Add spaces between consecutive .. ..= 61d29eb

[0.4.2] 2018-04-12

Added

• Handle binary operators and lifetimes 0fd174d
• Add reorder_impl_items config option 94f5a05
• Add --unstable-features CLI option to list unstable options from the --help output 8208f8a
• Add merge_imports config option 5dd203e

Changed

• Format macro arguments with vertical layout ec71459
• Reorder imports by default 164cf7d
• Do not collapse block around expr with condition on match arm 5b9b7d5
• Use vertical layout for complex attributes c77708f
• Format array using heuristics for function calls 98c6f7b
• Implement stable ordering for impl items with the the following item priority: type, const, macro, then method fa80ddf
• Reorder imports by default 164cf7d
• Group extern crate by default 3a138a2
• Make error_on_line_overflow false by default f146711
• Merge imports with the same prefix into a single nested import 1954513
• Squash the various ‘reorder imports’ option into one 911395a

Fixed

• Print version is missing the channel ca6fc67
• Do not add the beginning vert to the match arm 1e1d9d4
• Follow indent style config when formatting attributes efd295a
• Do not insert newline when item is empty a8022f3
• Do not indent or unindent inside string literal ec1907b

[0.4.1] 2018-03-16

Added

• Add ignore configuration option.
• Add license_template_path configuration option.
• Format lazy_static!.

Fixed

• Fix formatting bugs.
• Fix setting reorder_modules removing inline modules.
• Format attributes on block expressions.
• Support dyn trait syntax.
• Support multiple patterns in if let and while let.
• Support a pattern with parentheses.

[0.4.0] 2018-03-02

Changed

• Do not print verbose outputs when formatting with stdin.
• Preserve trailing whitespaces in doc comments.
• Scale the values of width heuristics by max_width.

Fixed

• Do not reorder items with #[macro_use].
• Fix formatting bugs.
• Support the beginning | on a match arm.

[0.3.8] 2018-02-04

Added

• Format (or at least try to format) macro_rules!.

[0.3.7] 2018-02-01

Added

• Add use_field_init_shorthand config option.
• Add reorder_modules configuration option.

[0.3.6] 2018-01-18

Fixed

• Fix panicking on formatting certain macros (#2371).

[0.3.5] 2018-01-15

Changed

• Format code block in comments when wrap_comments is set to true.
• Remove same_line_attributes configuration option.
• Rename git-fmt to git-rustfmt.

Fixed

• Rustup to rustc 1.25.0-nightly (e6072a7b3 2018-01-13).
• Fix formatting bugs.

[0.3.4] 2017-12-23

Added

• Add --version flag to cargo-fmt, allow cargo fmt --version.

Fixed

• Rustup to rustc 1.24.0-nightly (5165ee9e2 2017-12-22).

[0.3.3] 2017-12-22

Added

• Format trait aliases.

Changed

• cargo fmt will format every workspace member.

Fixed

• Rustup to rustc 1.24.0-nightly (250b49205 2017-12-21)
• Fix formatting bugs.

[0.3.2] 2017-12-15

Changed

• Warn when unknown configuration option is used.

Fixed

• Rustup to rustc 1.24.0-nightly (0077d128d 2017-12-14).

[0.3.1] 2017-12-11

Added

• Add error_on_unformatted configuration option.
• Add --error-on-unformatted command line option.

Changed

• Do not report formatting errors on comments or strings by default.
• Rename error_on_line_overflow_comments to error_on_unformatted.

Fixed

• Fix formatting bugs.
• Fix adding a trailing whitespace inside code block when wrap_comments = true.

[0.3.0] 2017-12-11

Added

• Support nested imports.

Changed

• Do not report errors on skipped items.
• Do not format code block inside comments when wrap_comments = true.
• Keep vertical spaces between items within range.
• Format format! and its variants using compressed style.
• Format write! and its variants using compressed style.
• Format simple array using compressed style.

Fixed

• Fix rustfmt --package package_name not working properly.
• Fix formatting bugs.

[0.2.17] 2017-12-03

Added

• Add blank_lines_lower_bound and blank_lines_upper_bound configuration options.

Changed

• Combine configuration options related to width heuristic into width_heuristic.
• If the match arm's body is if expression, force to use block.

Fixed

• Fix cargo fmt --all being trapped in an infinite loop.
• Fix many formatting bugs.

Removed

• Remove legacy configuration options.

[0.2.16] 2017-11-21

Added

• Remove empty lines at the beginning of the file.
• Soft wrapping on doc comments.

Changed

• Break before | when using multiple lines for match arm patterns.
• Combine control_style, where_style and *_indent config options into indent_style.
• Combine item_brace_style and fn_brace_style config options into brace_style.
• Combine config options related spacing around colons into space_before_colon and space_after_colon.

Fixed

• Fix many bugs.

[0.2.15] 2017-11-08

Added

• Add git-fmt tool
• where_single_line configuration option.

Changed

• Rename chain_one_line_max to chain_width.
• Change the suffix of indent-related configuration options to _indent.

[0.2.14] 2017-11-06

Fixed

• Rustup to the latest nightly.

[0.2.13] 2017-10-30

Fixed

• Rustup to the latest nightly.

[0.2.12] 2017-10-29

Fixed

• Fix a bug that cargo fmt hangs forever.

[0.2.11] 2017-10-29

Fixed

• Fix a bug that cargo fmt crashes.

[0.2.10] 2017-10-28

[0.2.9] 2017-10-16

[0.2.8] 2017-09-28

[0.2.7] 2017-09-21

Added

• binop_separator configuration option (#1964).

Changed

• Use horizontal layout for function call with a single argument.

Fixed

• Fix panicking when calling cargo fmt --all (#1963).
• Refactorings & faster rustfmt.

[0.2.6] 2017-09-14

Fixed

• Fix a performance issue with nested block (#1940).
• Refactorings & faster rustfmt.

[0.2.5] 2017-08-31

Added

• Format and preserve attributes on statements (#1933).

Fixed

• Use getters to access Span fields (#1899).

[0.2.4] 2017-08-30

Added

• Add support for Yield (#1928).

[0.2.3] 2017-08-30

Added

• multiline_closure_forces_block configuration option (#1898).
• multiline_match_arm_forces_block configuration option (#1898).
• merge_derives configuration option (#1910).
• struct_remove_empty_braces configuration option (#1930).
• Various refactorings.

Changed

• Put single-lined block comments on the same line with list-like structure's item (#1923).
• Preserve blank line between doc comment and attribute (#1925).
• Put the opening and the closing braces of enum and struct on the same line, even when item_brace_style = "AlwaysNextLine" (#1930).

Fixed

• Format attributes on ast::ForeignItem and take max width into account (#1916).
• Ignore empty lines when calculating the shortest indent width inside macro with braces (#1918).
• Handle tabs properly inside macro with braces (#1918).
• Fix a typo in compute_budgets_for_args() (#1924).
• Recover comment between keyword (impl and trait) and { which used to get removed (#1925).