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Changelog

[Unreleased]

[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 #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 #2662

Fixed

  • Handle formatting of auto traits 5b5a72c
  • Use consistent formatting for empty enum and struct #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).