Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

Release 0.26.0

Released 2022-09-18. Progress: 4500 of 6843 tests passed (or 4673 if ignoring some deprecation messages).

Breaking changes

• A BuiltinFn now takes a &ResolvedArgs rather than a &ScopeRef as argument (PR #157).
• @extend is still unsupported, but now some uses of it (e.g. in control structures) will result in an error instead of wrong output.
• Some sass::Item alternatives now contain a Callable, combining FormalArgs with a body (a Vec<Item>). And sass::Item::Content now has a CallArgs. Also, MixinDeclImpl is replaced with sass::Closure. (PR #146).
• sass::CallArgs::new() has an additional trailing_comma boolean argument (PR #147).
• Remove deprecated methods css::Value::integer_value() and Number::is_integer().
• Changed the error type of Scope::get_function().
• Setting a variable, Scope::define now takes the Value by value rather than by reference. Also, Scope::define_multi is no longer exposed in the api.
• Renamed one variant of ScopeError and added two others.
• The sass Value::Variable and Item::VariableDeclaration variants now holds a Name rather than just a String for the variable name. Also, both now holds a SourcePos.
• Changes in Error representation. Many errors are now constructed like Invalid::SomeVariant.at(pos) (PR #145).
• Error::error now takes an Into<String> argument (PR #151).
• The module input contains types types with Context<L>, Loader, FsLoader, and FsContext, replacing the old FileContext and FsFileContext. Also, the types SourceKind, SourceName and Parsed are moved from top-level into the input module (PR #150).
• The parse_scss_data function is removed. Please create a SourceFile and use the parse method on that instead (PR #150).
• The Format::write_root method are removed, Context::transform should be used instad (PR #152).

Improvements

• input::Context is the new main interface to rsass. Create a context suitable for how files should be loaded, configure it with an output format and optionally extend the global scope before calling Context::transform with an input file (PR #151, PR #152).
• Also provide CargoContext / CargoLoader for convenient use in build scripts (PR #154).
• The way to get argument values from the implementation of a builtin function is refactored to handle both any type that implements TryFrom<Value> and explicit validation/conversion methods nicer, and is now availiable for implementing builtin functions (extensions) outside of rsass itself (PR #157).
• The @content can have arguments when declaring and calling a mixin (PR #146).
• Variable declartions can be scoped (like module.$var: value). Some error reporting improvements (PR #148).
• Allow interpolation in css min and max function arguments.
• The url for @use and @forward must be quoted.
• Improve detection of import loops (PR #150).
• When loading files, Don't apply suffix / index-adding rules if the file name already has a suffix (PR #150).
• Some @ rules are now forbidden in some places as they should (PR #145).
• The css var(...) function is now parsed as a proper function, and not as a special string (PR #147).
• The null value can be quoted as an empty string (PR #147).
• Make Debug formatting of rsass::Error look like the Display output, but without the "Error: " prefix. This makes the error display correctly if returned from a main function. This also removed the "Error: " prefix from a lot of message strings (PR #151).
• In error message, don't show ellipses for consecutive lines (PR #147).
• Somtimes a trailing comma in argument lists is preserved (PR #147).
• Simplified main of the command-line by returning a Result (PR #151).
• Update sass-spec test suite to 2022-09-15.
• Handle tests referencing input.scss in spectest (include it among the mock files, if mentioned in itself or any existing mock file) (PR #150).
• Use lazy-regex in spectest (PR #150).
• Rsass now uses rust edition 2021, so MSRV is 1.56.0 (PR #153).
• Some cleanups.
• The main branch is now named main rather than master.

Thanks to @fasterthanlime (again) for reporting the problem with interpolation in min and max.

Release 0.25.2

Released 2022-05-27. Progress: 4350 of 6552 tests passed in dart-sass compatibility mode.

• Use platform-dependent path.join for putting the local part after a base path, seems to make slash-separated strings ok as the joined part. (PR #144, issue #133)
• Update sass-spec test suite to 2022-05-20.

Thanks to @fasterthanlime for reporting and testing.

Release 0.25.0

Released 2022-05-17 (On the Norwegian Constitution day 🇳🇴). Progress: 4331 of 6523 tests passed in dart-sass compatibility mode.

Breaking changes

• Update minimum supported rust version to 1.49.0 (from 1.45.2).
• SourceFile.parse() now returns a Result<Parsed> rahter than a Result<Vec<sass::Item>>, and Format::write_root now takes a Parsed (PR #140).
• FsFileContext::file is replaced by FsFileContext::for_path, which initializes a file context and loads a file from it (PR 137).

Improvements

• Hopefully improved relative file finding on windows (PR #137).
• Plain css @import rules is only allowed on a few condtions, in other cases an error is reported (Issue #139, PR #137).
• Rsass can now parse (some) plain css as well as scss. Css files can be referenced in @use and @import directives, as well as in the meta.load-css mixin (PR #140).
• Make the calc(...) function signal an error when args are known to be invalid css (PR #138).
• Change map.deep-merge to match recent change in dart sass.
• Minor fix in whitespace around at-rules.
• Instrumented attempted file loading with tracing (PR #137).
• Fix a typo in LICENSE (Issue #136).
• Update sass-spec test suite to 2022-05-10.
• Make rust version of sass-spec more directory-aware (which fixes one of 5825 tests).
• Use a crates badge that actually works.

Thanks to @jonassmedegaard for #136, and to @fasterthanlime for reporting the problem that #137 attempts to fix.

Release 0.24.0

Released 2022-03-23. Progress: 4013 of 6478 tests passed in dart-sass compatibility mode.

Breaking changes

• The functions parse_scss_file and parse_scss_path is removed. Use SourceFile (maybe from a FileContext) instead (PR #132).
• Some API changes (mayinly using SourceFile as return type) in FileContext and FsF ileContext (PR #132).
• Scope::get now takes an &Name rather than an &str for the variable name.
• sass::Value::Variable now has a source position.
• sass::Item and css::BodyItem got new alternatives for custom properties (PR #134).
• Some changes in the Error type to facilitate positions.

Improvements

• Basic support for meta.load-css mixin (PR #131).
• Improved calc and clamp handling (PR #133).
• Support custom properties (PR #134).
• Refactor source file handling. Instead of creating new FileContexts wrapping the original for each file for searching for local paths in that file, use the SourceName of the containing file to find local paths (PR #132).
• Detect @import loops.
• Report undefined variable / module errors better.
• Update color formatting. Sass-spec changed how it decides what format to show a color in (PR #135).
• Enable clippy in CI and fix some things it complained about (PR #128).
• Update sass-spec test suite to 2022-03-17.

Release 0.23.4

Released 2022-02-06. Progress: 3872 of 6477 tests passed in dart-sass compatibility mode.

• Different kinds of length units are now considered compatible for the max and min css unctions.

Release 0.23.2

Released 2022-02-04. Progress: 3872 of 6477 tests passed in dart-sass compatibility mode.

• Fix remaining cases of "special arguments" handling in rgb function.
• The commandline now uses clap 3.0 rather than structopt.
• Update update-tests dependency hrx-get to 0.2.0.
• Update sass-spec test suite to 2022-02-01.

Release 0.23.0

Released 2021-12-10. Progress: 3849 of 6444 tests passed in dart-sass compatibility mode (this may seem like a regression, but that is caused by changes in the test suite).

Breaking changes

• Error has a new alternative, AtError.
• In sass::Item, the Error, MixinCall and MixinDeclaration variants is changed to include a SourcePos. Also, a sass::Mixin contains a SourcePos for where it is declared.
• The fields of SourcePos is now private.
• The name of a sass::Item::AtRule is now a SassString.
• A css::Value::Literal now contains a CssString rather than a String and a Quotes. Evaluating a SassString also returns a CssString (PR #118).
• The selector types are split from one selector module to the css and sass modules. Anything that used selector types should now use either css or sass types (PR #123).

Improvements

• A css call is just a special kind of string.
• Include position of directive or function call when reporting @error errors.
• Improve error reporting from inside mixins and functions.
• Support interpolation in @-rule names.
• Fixed #116: The sass:map.merge function was buggy.
• Fixed #119: saturate(200%) is allowed (the argument is not limited to 0..100%).
• sass:selector functions append, nest, and parse are closer to correct (PR #123).
• sass:meta functions calc-args and calc-name implemented (PR #126).
• Css strings and selectors can now be parsed directly (PR #123).
• Fixed reformatting of to-much-indented comments.
• Fixed panics in some color arithmetic (Issue #120, #121, #122, PR #125).
• Replace rand with fastrand, hopefully compile faster (PR #105).
• Unicode Private-use characters are escaped when printed.
• Updated nom to 7.0 and nom-locate to 4.0.
• Update sass-spec test suite to 2021-11-30.

Thanks to @paolobarbolini, @connorskees and @charlesxsh for reporting issues.

Release 0.22.2

Released 2021-07-03. Progress: 4002 of 6180 tests passed in dart-sass compatibility mode.

• Changed the red(..), green(..), and blue(..) functions to always return integers. Issue #114, thanks @Keats.
• Changed the blackness(..) and whiteness(..) functions to return blackness/whiteness of the integer rgb approximations of the color rather than the exact color.

Release 0.22.0 - 2021-06-20

Progress: 3992 of 6180 tests passed in dart-sass compatibility mode.

Breaking changes

• The sass::Item::MixinCall enum alternative was modified.
• Signature changes in css::CallArgs and sass:CallArgs, and new alternatives in sass::ArgsError.
• css::Value has a new variant ArgList.
• The OrderMap::keys() and values() functions now returns iterators, OrderMap::remove(key) now returns the removed value.

Improvements

• Better handling of mixin call bodies, the @content item, and the content_exists function. Fixes #112.
• @import exposes things @forwarded in the imported module.
• Many improvements in parameter passing to functions and mixins. PR #113.
• Some more fixes regarding function calls and modules.
• Support the keywords function in sass:meta.
• Removed some debug printouts that was accidentally left in 0.21.0.
• Update sass-spec test suite to 2021-06-14.

Thanks to @Keats for reporting #112 and #108.

Release 0.21.0 - 2021-06-01

Progress: 3727 of 6171 tests passed in dart-sass compatibility mode.

Breaking changes

• value::Unit and value::ListSeparator has new alternatives.
• The List alternative in sass::Value and css::Value is modified.
• The Use alternative in sass::Item is modified, and Forward added.

Improvements

• Most of @forward and some more of @use is now supported. PR #109 and #110.
• Handle unknown units. PR #101.
• List can be undecided between beeing comma-separated and beeing space-separated. PR #102.
• Improved parameter handling and returned values of the supported selector functions. PR #103.
• Implement meta.module_variables and meta.module_functions.
• Implement math.div function.
• Improved parameter checking for hwb, alpha, and invert functions in sass:color module.
• Support slash-separated lists. PR #111.
• The if function evaluates its arguments lazily. Issue #107.
• The --include-path cli argument is now named --load-path.
• At least some documentation on all public items.
• Update sass-spec test suite to 2021-05-24. Also include "other" files (for @use and @import) in rust code for the suite.

Tested with rustc 1.52.1, 1.50.0, 1.48.0, 1.45.2, 1.53.0-beta.3 (82b862164 2021-05-22), and 1.54.0-nightly (657bc0188 2021-05-31).

Release 0.20.0 - 2021-03-25

Progress: 3456 of 5962 tests passed in dart-sass compatibility mode.

Breaking changes

• The name of a module is no longer a sass::Name, but instead a String.

Improvements

• A space-separated list can be a key in a map.
• The builtin modules does not inherit the global functions.
• Scope names is not sass::Name ($a_b and $a-b is the same variable, but a_b and a-b are different scopes).
• Improve sass:map functions get and merge and add deep-merge and deep-remove.

Tested with rustc 1.51.0 (2fd73fabe 2021-03-23), 1.48.0 (7eac88abb 2020-11-16), 1.46.0 (04488afe3 2020-08-24), 1.44.1 (c7087fe00 2020-06-17), 1.51.0-beta.8 (73f48e5f6 2021-03-18), 1.53.0-nightly (07e0e2ec2 2021-03-24).

Release 0.19.2 - 2021-03-25

Version 0.20.0 was originally released as 0.19.2, but yanked as there was a breaking change.

Release 0.19.0 - 2021-03-14

Progress: 3371 of 5945 tests passed in dart-sass compatibility mode.

Breaking changes

• The unit of a Numeric is now a UnitSet rather than a Unit.
• Error has new variants and a new field in BadArguments.
• A sass::Value::Call now has a source position.
• A Rational is now a Ratio<i64> rather than a Ratio<isize>.

Improvements

• Added a Contributing section to readme.
• Handle values with multiple units. PR #97.
• Show call position for errors in function calls, and test for type errors in many standard functions. Many error messages are made identical to dart-sass, improving test-suit progress with more than 400 tests. PR #99.
• Fix issue #98: overflow in rational number arithmetic.
• Allow @at-root at document root.
• Boolean operators is truly lazy, e.g. false and f($x) does not call f.
• Refactored number parsing to use overflowing rationals. PR #100.
• Test suite sass-spec updated to 2021-03-02.
• Updated num-rational and num-bigint to 0.4.0.

Thanks to @alvra for reporting #98.

Tested with rustc 1.50.0 (cb75ad5db 2021-02-10), rustc 1.48.0 (7eac88abb 2020-11-16), rustc 1.46.0 (04488afe3 2020-08-24), rustc 1.44.1 (c7087fe00 2020-06-17), rustc 1.51.0-beta.6 (6a1835ad7 2021-03-12), and rustc 1.52.0-nightly (acca81892 2021-03-13).

Release 0.18.0 - 2021-02-25

Progress: 2892 of 5945 tests passed in dart-sass compatibility mode.

Breaking changes

Lots of things have been moved around. See Scope, Numeric, and Function in particular.

Improvements

• Support @use of user-defined modules. PR #96.
• Improve trigonometric precision by using f64 π rather than rational.
• Handle more peculiarities with atan2, pow, infinities and negative zero.
• Improve name lookups in scopes and modules, PR #87.
• new struct Scope replaces trait and three structs. PR #95.
• A color can be Hsla or Hwba as well as Rgba. PR #88, #89.
• Handle units in @for loops inside sass functions.
• Some types moved into value mod, imporoved docs. PR #90.
• Add support for $=, ~= and ^= in css attribute selectors. Issue #91, PR #92.
• A Numeric is a Number with a Unit. Also hide NumValue enum. PR #93.
• The SassFunction type is now named sass::Function.
• Test suite sass-spec updated to 2021-02-18.
• Some cleanups.

Thanks to @mfeckie for #91/#92.

Tested with rustc 1.50.0 (cb75ad5db 2021-02-10), rustc 1.48.0 (7eac88abb 2020-11-16), rustc 1.46.0 (04488afe3 2020-08-24), rustc 1.44.1 (c7087fe00 2020-06-17), rustc 1.51.0-beta.3 (b631c914c 2021-02-24), and rustc 1.52.0-nightly (a8486b64b 2021-02-24).

Release 0.17.0 - 2021-01-29

Progress: 2784 of 5936 tests passed in dart-sass compatibility mode.

Breaking changes

• Update nom to 6.0 raises the minimally supported compiler version to 1.44.0. Also, the dependency is technically exposed.
• sass::Item::Use was modified by #84.
• compile_scss_file is renamed to compile_scss_path, and FileContext is now a trait, the default implementation is renamed to FsFileContext by #85.

Improvements

• Allow customizing file loading by providing a custom impl of a FileContext, PR #85.
• Support the @use name as * syntax, PR #84.
• Make Error::BadValue a little closer to whats expected.
• Handle units in @for loops.
• Update nom to 6.0, PR #83.
• Update rand to 0.8, PR #86.
• Testing is now done with github actions rather than travis (Appveyor remains for window builds).
• sass-spec test suite updated to 2021-01-20.

Thanks to @paolobarbolini and @alvra for code contributions.

Tested with rustc 1.49.0 (e1884a8e3 2020-12-29), 1.44.1 (c7087fe00 2020-06-17), 1.46.0 (04488afe3 2020-08-24), 1.48.0 (7eac88abb 2020-11-16), 1.50.0-beta.8 (1cd030396 2021-01-20), and 1.51.0-nightly (c0b64d97b 2021-01-28).

Release 0.16.0 - 2020-11-10

Progress: 2718 of 5840 tests passed in dart-sass compatibility mode.

Breaking changes

• SourceName and sass::Item::Import was changed by #62.
• Use was added to the sass::Item enum by #80.
• Changes to sass::Value and css::Vaue by #81.

Improvements

• PR #80: Implement @use for standard sass modules. All standard modules are at least partially supported, only sass:string is fully supported. See issue #60 for for module support status.
• PR 82: Implement hwb support in sass:color. Also, provide From<Rgba> for css::Value and deprecate color value constructors.
• Provide From<bool> for css::Value (and deprecate Value::bool(v)).
• PR #62: Improve ParseError, SourcePos, and SourceName by using located spans by nom_locate in the parser. A sass::Item::Import now handles where each file is imported from, to improve error reporting.
• PR #81: Improved number handling. Now Value::Number handles both machine-sized rationals, bignum rationals and floats internally and Value::NumberBig is removed. Also, Value no longer implements Ord but only PartialOrd, to handle f64 NaN an infinite values correctly.
• Improve parsing of @else clauses.
• Update spec to 2020-10-29.

Tested with rustc 1.47.0 (18bf6b4f0 2020-10-07), 1.44.1 (c7087fe00 2020-06-17), 1.42.0 (b8cedc004 2020-03-09), 1.40.0 (73528e339 2019-12-16), 1.38.0 (625451e37 2019-09-23), 1.48.0-beta.8 (121901459 2020-11-08), and 1.49.0-nightly (25f6938da 2020-11-09),

Release 0.15.0 - 2020-10-25

Progress: 2320 of 5577 tests passed in dart-sass compatibility mode.

Breaking changes

• The Item::Comment enum value now contains a SassString rather than a String.
• The Error::ParseError enum value changed, and ErrPos is replaced with SourcePos and SourceName.
• The error type of parse_scss_data changed to ParseError.
• Unit::dimension() now returns a Dimension rather than a &str.

Improvements

• PR #79: Refactor some error handling. Relates to #46.
• Improve map parsing (a map is parsed as a plain vec of key/value pairs, filtering duplicates happens only when it is evaluated).
• Allow multiple & items in the same selector.
• & evaluates to null when used as a value without enclosing selector.
• Implement the @debug directive.
• Fix a % b evaluation for negative values.
• Allow / ignore comments in properties and values.
• Allow !default and !global in any order on variable declarations.
• Improve inspect(...) formatting of list values.
• Refactor and improve arithmetic on different units.
• ListSeparator is now Copy.
• Allow interpolation in comments.
• Some refactoring

Tested with rustc 1.47.0 (18bf6b4f0 2020-10-07), 1.44.1 (c7087fe00 2020-06-17), 1.42.0 (b8cedc004 2020-03-09), 1.40.0 (73528e339 2019-12-16), 1.38.0 (625451e37 2019-09-23), 1.48.0-beta.5 (4c78178b1 2020-10-21), and 1.49.0-nightly (ffa2e7ae8 2020-10-24).

Release 0.14.2 - 2020-10-13

Progress: 2294 of 5577 tests passed in dart-sass compatibility mode.

• Some improvements in list handling, formatting and introspection.
• Change default precision to 10, matching dart-sass.
• Semicolon is optional after variable, if last in block or file.
• Fix addition (and subtraction) of values with comparable units.
• Fix css value equality for map keys and other "special" places.
• Recognize known @-rules with escaped characters.
• Don't copy extra @charset rules to output (one is included if needed).
• Some internal refactor and cleanup.
• Update spec to 2020-10-07.

Tested with rustc 1.47.0 (18bf6b4f0 2020-10-07), 1.44.1 (c7087fe00 2020-06-17), 1.42.0 (b8cedc004 2020-03-09), 1.40.0 (73528e339 2019-12-16), 1.38.0 (625451e37 2019-09-23), 1.48.0-beta.2 (212e76c31 2020-10-08), and 1.49.0-nightly (8dae8cdcc 2020-10-12)

Release 0.14.0 - 2020-10-03

Progress: 2234 of 5510 tests passed in dart-sass compatibility mode.

• PR #76 and #78: Target dart-sass rather than libsass compatibility. This sets the target when testing and changes some different behavior, including how strings are parsed and handled.
• PR #75 from @divergentdave: Parse and add Value variants for BigInt numbers
• PR #77: Support rgba(r g b / a) and hsla(h s l / a) functions, i.e. the channels parameter with div-separated alpha channel.
• Fix @import indention.
• Improve function default argument parsing and don't panic in parse_value_data.
• Handle dictionary-ellipsis style call-by-varargs for functions.
• PR #73 from @divergentdave: Remove three unwraps from escaped_char
• PR #71 from @connorskees: Further optimize number printing
• Update travis url in README.
• PR #70 from @svenstaro: Mention grass rather than sassers, as sassers appears to be dead while grass is in rather active development.
• Add a CHANGELOG.md
• Update spec to 2020-09-17.
• Update num-rational to 0.3.0.

Tested with rustc 1.46.0 (04488afe3 2020-08-24), 1.44.1 (c7087fe00 2020-06-17), 1.42.0 (b8cedc004 2020-03-09), 1.40.0 (73528e339 2019-12-16), 1.38.0 (625451e37 2019-09-23), 1.47.0-beta.7 (e28d2bd09 2020-10-01), and 1.48.0-nightly (8876ffc92 2020-10-02)

Release 0.13.0 - 2020-04-19

Progress: 1634 of 3502 tests passed in libsass compatibility mode.

• output::Format wraps an output::Style and a precision. The global precision setting is removed.
• Value and other structs no longer implents Display, instead the provid a format method, that takes an output format and provides a Display implementation.
• The compile_value rust function now takes a format argument.
• Issue #42 (partial): The min(..) and max(...) functions are handled as plain css functions when valid, while still handling them as sass functions when nessecary.
• PR #69, fixing #68: Avoid exponential complexity on parenthesis.
• Allow comments in @function bodies.
• PR #67 from @connorskees: Refactor and fix printing of numbers
• When defining multiple variables, having more names than values is allowed. The extra names get null values.
• Convert som panics / unwraps to properly handled errors.
• There was massive restructuring in the test suite, so almost all tests moved around. I moved remaining tests to build a single test program for the suite rather than several for different directories in the suite (this also means more tests are included in the conversion).
• Fix check_spec stats calculation.

Thanks to @connorskees for code contributions and bug reports.

Tested with rustc 1.42.0 (b8cedc004 2020-03-09), 1.40.0 (73528e339 2019-12-16), 1.38.0 (625451e37 2019-09-23), 1.36.0 (a53f9df32 2019-07-03), 1.43.0-beta.6 (062dea094 2020-04-18), and 1.44.0-nightly (52fa23add 2020-04-18).

Release 0.12.2 - 2020-02-23

• Fix #63 and #64: Handle DOS-style newlines
• Use structopt rather than raw clap for the CLI.
• Sass function str_slice require integer indexes.
• Some cleanup, some of it suggested by clippy.
• Removed link to no-longer working graphical progress bar in docs.

Thanks to @connorskees for bug reports.

Tested with rustc 1.41.0 (5e1a79984 2020-01-27), 1.40.0 (73528e339 2019-12-16), 1.38.0 (625451e37 2019-09-23), 1.36.0 (a53f9df32 2019-07-03), 1.42.0-beta.3 (86f329b41 2020-02-07), and 1.43.0-nightly (436494b8f 2020-02-22).

Release 0.12.0 - 2019-12-25

• Issue #54: Add a LICENSE file.
• PR #57: Allow channel string in rgba()
• Issue #58: Let ructe::Error implement std::error::Error.
• Issue #59: Improve @import and media rules.
• Implement @error and @warn directives.
• Improve string unquoting, including multi-position numerical escapes.
• Improve at-rule parsing.
• Fix strange operator handling.
• Implement modulo operator.
• Fix line breaks in comments.
• Handle bad argument to random() function.
• Update test suite to e9e219bdf (2019-12-19).
• Some refactorig and clean-up.

Thanks to @emielbeinema, @maxbrunsfeld, and @Boiethios for contributed code and suggestios.

Tested with rustc 1.40.0 (73528e339 2019-12-16), 1.38.0 (625451e37 2019-09-23), 1.36.0 (a53f9df32 2019-07-03), 1.34.2 (6c2484dc3 2019-05-13), 1.41.0-beta.1 (eb3f7c2d3 2019-12-17), and 1.42.0-nightly (a9c1c04e9 2019-12-24).

Release 0.11.2 - 2019-12-25

• PR #56: The url function is special. Handle url(foo) as simply a string if possible. Sometimes, such as url("foo" + $bar), it must be a function returning a string instead. Partially adresses #42. Fixes #41.
• PR #55: Implement raw css functions. Handles the calc, element, env, expression, var, and progid:... special functions. Partially adresses #42. Fixes #53.
• Issue #50: Make tests more readable.
• Improve error handling in selector fns. Avoid a panic in some error conditions.
• Update test suite (to fcd6bd6c0, 2019-09-24).
• Update bytecount to 0.6.0.
• Some internal refactoring.

Thanks to @glebm and @nic-harley for reports and suggestions.

Release 0.11.0 - 2019-07-16

Sass-spec reports 1507 of 2865 tests passed in libsass compatibility mode.

• Update nom to version 5.0.
• A string can start with a # without being a color.
• Correct parameter name for unit, unitless, quote, and unquote functions.
• The random function ignores units.
• An empty unquoted string behaves like null.
• Fix some issues with string offsets in str_slice and str_insert.
• The quote function can use single quotes when needed.
• Return an error rather than panicing on some invalid scss.
• Some test updates and fixes in spectest.

Tested with rustc 1.36.0 (a53f9df32 2019-07-03), 1.34.2 (6c2484dc3 2019-05-13), 1.32.0 (9fda7c223 2019-01-16), 1.37.0-beta.3 (2ba6de7e2 2019-07-12), and 1.38.0-nightly (4b65a86eb 2019-07-15).

Release 0.10.2 - 2019-07-07

Sass-spec reports 1472 of 2802 tests passed in libsass compatibility mode.

• Update progress number in readme and documentation, since I forgot in 0.10.0.

Release 0.10.0 - 2019-07-07

• PR #51: Impove string parsing/escaping.
• Issue #46, PR #47: Report file position of parse errors, and improve the parser to have errors reported in a more specific position.
• Improve error handling in functions, calling a function can yield an error. Partially solves #41: The unsupported call will now yield an error rather than hang rsass.
• Commandline changes:
  • Support -I commandline argument for include path.
  • Use lowercase -v for version (expected by the test runner).
• Some color function improvements:
  • Handle alpha percentatges in rgba.
  • The rgb function can be used as rgba with four args.
  • Use alpha propely when mixing colors.
  • Handle both alpha and opacity css function fallback.
  • Implement the grayscale function.
  • Support three arguments to rgba function.
• Some list function improvements:
  • inspect shows parens for empty list, and spells out "null" for a null value.
  • Join gets better at selecting wether result should be comma or space separated.
  • The length function treats a null as an empty list.
  • Handle singleton in index and nth functions.
• More function improvements:
  • Implement the unique_id function.
  • Check that indexes are sane in str_slice function.
  • Skip null args even if not last when evaluating a function to a function call.
  • Implement equality check for builtin functions.
• Error, not panic, on unknown mixin.
• Allow modifiers on attribute selectors.
• Color names are caseless.
• Improve handling of url imports.
• Update deunicode to 1.0 and rand to 0.7.0.
• Allow interpolation in namespacerule.
• Allow ";" after body block.
• Lots of test suite updates, including support for .hrx tests in spectest. Target libsass compatibility in testing.

I don't really know if I should target libsass or dart-sass compatibility, but libsass seems to be closer to my current implementation, so target that at least for now.

Thanks to @maxbrunsfeld and @glebm for code and suggestions.

Tested with rustc 1.36.0 (a53f9df32 2019-07-03), 1.34.2 (6c2484dc3 2019-05-13), 1.32.0 (9fda7c223 2019-01-16), 1.37.0-beta.1 (178aa6611 2019-07-04), and 1.38.0-nightly (481068a70 2019-07-05).

Release 0.9.8 - 2019-02-10

Sass-spec reports 1645 of 3440 tests for sass 3.6 passed.

• Improve support for transparent.
• PR #45 from @glebm: Automatically update passing / failing tests Hardkoded skiplists in spectest.rs is cleared apart for tests where rsass panics.
• Issue 43: Normalize newlines in tests.
• PR #44 from @glebm: Update to Rust 2018 Edition, Rust v1.31.0+
• Issue #39, PR #40 from @glebm: Parser CallArgs: Allow trailing spacelike sans ","
• Issue #32: Make the selectors module pub.
• Issue #34, PR #35 from @glebm: Accessing an undefined variable is an error.
• Allow input starting with UTF-8 U+FEFF BOM.
• Target sass spec version 3.6.

Thanks to contributors @glebm, @maxbrunsfeld and @sunjay for code and suggestions.

Tested with rustc 1.32.0 (9fda7c223 2019-01-16), 1.31.0 (abe02cefd 2018-12-04), 1.33.0-beta.6 (b203178b6 2019-02-05), and 1.34.0-nightly (3315728c0 2019-02-09).

Release 0.9.6 - 2019-01-09

A default run of sass-spec found 1680 of 3635 tests passing.

• Issues #26, #30, PR #29 from @tw1t611; Add fr unit.
• Refactor and document the Number type used inside value types.
• Allow trailing comma in sass function definitions.
• The sass length function now correctly returns one for single (non-list) values.
• Fix a bug in color function parameter handling.
• Add libsass and parser to auto-testing setup.
• Update rand to 0.6.1.

Tested with 1.31.1 (b6c32da9b 2018-12-18), 1.30.1 (1433507eb 2018-11-07), 1.29.0 (aa3ca1994 2018-09-11), 1.28.0 (9634041f0 2018-07-30), 1.27.2 (58cc626de 2018-07-18), 1.26.2 (594fb253c 2018-06-01), 1.32.0-beta.12 (2bde39b8e 2019-01-05), and 1.33.0-nightly (d22fa2d87 2019-01-08)

Release 0.9.4 - 2018-09-23

A default run of sass-spec found 1672 of 3483 tests passing.

• Allow unicode variable names.
• Implement the precision argument.
• Implement hex colors with alpha.
• More flexible call_args; allow whitespace before separating commas, and allow a comma trailing the last argument.
• Test infrastructure: a program spectest now converts selected tests from sass-spec to integration tests, to facilitate keeping tests up-to-date.

Tested with rust 1.29.0 (aa3ca1994 2018-09-11), 1.28.0 (9634041f0 2018-07-30), 1.27.2 (58cc626de 2018-07-18), 1.26.2 (594fb253c 2018-06-01), 1.25.0 (84203cac6 2018-03-25), 1.30.0-beta.7 (0ebb25088 2018-09-22), and 1.30.0-nightly (4591a245c 2018-09-22).

Release 0.9.2 - 2018-09-02

• Fix #25; Avoid crashing on some non-utf8 input.

Thanks again to @killercup and rust-fuzz/targets#119 for identifying more parser crashes on non-utf8 input.

Tested with rustc 1.28.0 (9634041f0 2018-07-30), 1.27.2 (58cc626de 2018-07-18), 1.26.2 (594fb253c 2018-06-01), 1.25.0 (84203cac6 2018-03-25), 1.24.1 (d3ae9a9e0 2018-02-27), 1.29.0-beta.9 (b4ec8d46e 2018-09-01), and 1.30.0-nightly (28bcffead 2018-09-01).

Release 0.9.0 - 2018-08-26

A default run of sass-spec found 1661 of 3482 tests passing.

Changes since version 0.8.0 includes:

• PR #24: Implement a Rgba type and use in css::Value and sass::Value.
• PR #22: Partial support for @at-root. Supports & back-refs but not with and without.
• Add "foo/index.scss" and "foo/_index.scss" when attempting to find "foo" for import.
• The parser should fail rather than crash on some non-utf8 input.
• PR #21: Introduce a Number type, mainly for sharing some abstraction between css and sass values.
• Make the rgba function handle non-numeric inputs (e.g. calc(...)).
• Implement the feature-exists function.
• Make !important part of value rather than property, so it can be used in function / mixin arguments etc.
• A css3 pseudo-element selector may have arguments.
• Add support for unicode ranges.
• The @each construct can bind multipe values.
• PR #20: Division is now a BinOp rather than a special case.
• Minor improvement in parsing and formatting at-rules.
• Fix some clippy complaints.
• Minor documentation updates.
• Some updates to travis build script and test structure.
• Add appveyour (windows) continous integration testing.
• Depedency updates: num-rational 0.2.1, nom 4.0 (PR #23) and rand 0.5.

Thanks to @killercup and rust-fuzz/targets#119 for identifying some parser crashes on non-utf8 input.

Tested with rustc 1.28.0 (9634041f0 2018-07-30), 1.27.2 (58cc626de 2018-07-18), 1.26.2 (594fb253c 2018-06-01), 1.25.0 (84203cac6 2018-03-25), 1.24.1 (d3ae9a9e0 2018-02-27), 1.29.0-beta.6 (5c5be098e 2018-08-25), and 1.30.0-nightly (39e6ba821 2018-08-25).

Release 0.8.0 - 2018-04-07

A default run of sass-spec found 1583 of 3364 tests passing.

Changes since version 0.7.0 includes:

• PR #17, #18, and #19 from @ErichDonGubler: Improvements to check_spec.
• Allow trailing comma in dictionary definition.
• Implement the get-function function, making a (named) function a css::Value, and modify the call function to take such a Value. The warning when the Value is a Literal is more motivated now.
• Add weight arg for invert function.
• If a function call fails, output it as-is.
• Allow @include w/o ";" to be last input.
• Use correct names for output styles. The supported styles are expanded and compressed.
• Add maintenence status to manifest.
• Impement the & value, expanding to the selector containing the value.
• Implement the selector-parse, selector-append, and selector-nest functions.
• Fix AsciiExt warning on rust 1.23 and up.
• Fix #16, Do not build a no-op command line, by specifying commandline as required-features of the bin target. Thanks to @biluohc for the suggestion!
• Miscellaneous code cleanup, dependency updates and reformatting.

Tested with rustc 1.23.0 (766bd11c8 2018-01-01), 1.24.1 (d3ae9a9e0 2018-02-27), 1.25.0 (84203cac6 2018-03-25), 1.26.0-beta.2 (0e350672e 2018-04-05), and 1.27.0-nightly (eeea94c11 2018-04-06).

Release 0.7.0 - 2017-12-28

A default run of sass-spec found 1466 of 3339 tests passing (or 1520 of 6094 when claiming to be libsass). Changes since version 0.6.0 includes:

• Fix #15 by making building the commandline utility optional.
• Fix some issues with string quoting and list whitespace.
• Improve support for @-rules.
• Use num-rational without default features, for faster compilation.

Tested with rustc 1.19.0 (0ade33941 2017-07-17), 1.20.0 (f3d6973f4 2017-08-27), 1.21.0 (3b72af97e 2017-10-09), 1.22.1 (05e2e1c41 2017-11-22), 1.23.0-beta.2 (c9107ee93 2017-12-08), and 1.24.0-nightly (1abeb436d 2017-12-27).

Release 0.6.0 - 2017-12-06

A default run of sass-spec found 1466 of 3339 tests passing (or 1520 of 6094 when claiming to be libsass). Changes since version 0.5.0 includes:

• Handle quoting and escaping in strings closer to correct.
• Updated lazy_static to version 1.0
• Some internal cleanup.

Tested with rustc 1.19.0 (0ade33941 2017-07-17), 1.20.0 (f3d6973f4 2017-08-27), 1.21.0 (3b72af97e 2017-10-09), 1.22.1 (05e2e1c41 2017-11-22), 1.23.0-beta.1 (082b0ff02 2017-11-21), and 1.24.0-nightly (cfba0d446 2017-12-05).

Release 0.5.0 - 2017-11-05

A default run of sass-spec found 1359 of 3331 tests passing (or 1416 of 6086 when claiming to be libsass). Changes since version 0.4.0 includes:

• Improve handling of quoted / unquoted strings and interpolation. Still not correct, but exhibits correct behavior in more tests than earlier.
• Support interpolation in selectors.
• Support interpolation in property names.
• PR #14: Implement map syntax and map functions.
• Make error handling not break if nom is compiled with verbose-errors.
• Miscellaneous internal cleanups, some suggested by clippy.

Tested with rustc 1.18.0 (03fc9d622 2017-06-06), 1.19.0 (0ade33941 2017-07-17), 1.20.0 (f3d6973f4 2017-08-27), 1.21.0 (3b72af97e 2017-10-09), 1.22.0-beta.2 (a0a837c45 2017-10-20), and 1.23.0-nightly (d762b1d6c 2017-11-04).

Release 0.4.0 - 2017-10-15

A default run of sass-spec found 1163 of 3331 tests passing (or 1227 of 6086 when claiming to be libsass). Changes since version 0.3.4 includes:

• Implemented bracketed lists.
• Support CSS3 pseudo elements
• Added functions: unitless, content-exists, zip, is-bracketed, join.
• Update the nom parser library to 3.2.
• PR #13 Split of css values from sass values.
• PR #10 Preparatory work for splitting Value
• PR #7 Extract parser into separate module
• PR #8 Extract som modules from lib.rs
• Pin rustfmt to 0.8.4, to avoid surprising formatting changes.
• PR #6 Don't require a git plugin for the check-spec.

Thank You to Jonas Nicklas for many contributions.

Tested with rustc 1.18.0 (03fc9d622 2017-06-06), 1.19.0 (0ade33941 2017-07-17), 1.20.0 (f3d6973f4 2017-08-27), rustc 1.21.0 (3b72af97e 2017-10-09), 1.22.0-beta.1 (e694dd37b 2017-10-12), and 1.22.0-nightly (7778906be 2017-10-14).

Release 0.3.4 - 2017-06-05

A default run of sass-spec found 1146 of 3310 tests passing (or 1215 of 6065 when claiming to be libsass). Changes since version 0.3.2 includes:

• Improve handling of at-rules.
• Allow block comments in selectors.
• Make FileContext::file(..) public.
• Test and fix type-of for booleans.
• Test and fix parsing of some strange lists.
• Test and fix unary operations.
• Test and fix some strange string values.
• Some internal cleanup and code restructuring.

Tested in rust 1.15.1 (021bd294c 2017-02-08), 1.16.0 (30cf806ef 2017-03-10), 1.17.0 (56124baa9 2017-04-24), 1.18.0-beta.4 (0308c9865 2017-05-27), and 1.19.0-nightly (0418fa9d3 2017-06-04).

Release 0.3.2 - 2017-05-06

A default run of sass-spec found 1053 of 3299 tests passing (or 1111 of 6054 when claiming to be libsass). Changes since version 0.3.0 includes:

• Clean up nom error creation, to be compatible with both default and verbose-errors nom.
• Implement some more quote strangenes.
• Minor internal cleanup

Tested in rust 1.15.1, 1.16.0, 1.17.0 (stable), 1.18.0-beta.1 (4dce67253 2017-04-25), and 1.19.0-nightly (f4209651e 2017-05-05).

Release 0.3.0 - 2017-05-06

A default run of sass-spec found 1039 of 3299 tests passing (or 1097 of 6054 when claiming to be libsass). Changes since version 0.2.0 includes:

• PR #4: Support application-defined functions in rust.
• Equal strings are equal even if the quoting differs (e.g. foo == "foo").
• Improved value parsing in many ways.
• Implemened numeric rounding rules to match libsass default.
• Improved handling of null values.
• Fix some minor output formatting issues.
• Handle arguments to pseudo-selectors (which are themselfs selectors) properly.
• Support for rust 1.14 is dropped.

Tested in rust 1.15.1, 1.16.0, 1.17.0 (stable), 1.18.0-beta.1 (4dce67253 2017-04-25), and 1.19.0-nightly (f4209651e 2017-05-05).

Release 0.2.0 - 2017-04-28

A default run of sass-spec found 841 of 3294 tests passing (or 899 of 6049 when claiming to be libsass). Changes since version 0.1.10 includes:

• Err results from public functions is now Error, not String. This is a breaking change in public api.
• PR #2: value interpolation (as separate values and in strings).
• Implement basic @content for mixins (some scoping issues remains).
• Support namespace properties.
• Improve parsing of unquoted strings.
• Implement the call() function.
• Implement the ie-hex-str() function.
• Allow alternative parameter names to rgba() function.
• Improve defered operators handling.
• Improve scopeing and value evaluating (but not enough).
• Allow function declarations in blocks.
• Implement for, while, and each in user-defined functions.
• Fix scoping error for while loops.
• Support css unary + and -.
• Misc internal or smaller improvements (some suggested by clippy).

Tested in rust 1.14.0, 1.15.1, 1.16.0, 1.17.0 (stable), 1.18.0-beta.1 (4dce67253 2017-04-25) and 1.18.0-nightly (94e884b63 2017-04-27).

Release 0.1.10 - 2017-04-14

• Improve string concatenation with plus operator.
• Support * in selectors
• Support \ in selectors
• Support varargs functions.
• Allow trailing commas in lists.
• Implement list functions append, length, and index.
• Implement numeric functions min and max.
• Improve @for and @each loop handling.
• Internal cleanup and refactorisation.

Tested in rust 1.14.0, 1.15.1, 1.16.0 (stable), 1.17.0-beta.3 (beta), and 1.18.0-nightly (28a742997 2017-04-13).

Release 0.1.8 - 2017-04-08

A default run of sass-spec found 576 of 3294 tests passing (or 619 of 6049 when claiming to be libsass). Changes since version 0.1.6 includes:

• Support user-defined functions.
• Support functions global_variable_exists, function_exists, mixin_exists.
• Support @each, @for and @while loops.
• Make dash and underscore equivalent in names.
• Fix all tests from spec/scope.
• Improve documentation.
• Miscellaneous refactorisations and cleanups.

Tested in rust 1.14.0, 1.15.1, 1.16.0 (stable), 1.17.0-beta.3 (beta), and 1.18.0-nightly (53f4bc311 2017-04-07).

Release 0.1.6 - 2017-03-05

A default run of sass-spec found 502 of 3289 tests passing (or 532 of 6044 when claiming to be libsass). Changes since version 0.1.4 includes:

• Many more functions implemented.
• Better support för at directieves.
• Support the !default tag on variable declaration.
• Support all known css units.
• Support !important tag on properties.
• Allow the * character inside comments.

Tested in rust 1.14.0, 1.15.1, 1.16.0-beta.3 (stable), and 1.17.0-nightly (b1e31766d 2017-03-03).

Release 0.1.4 - 2017-02-08

A default run of sass-spec found 420 of 3286 tests running (or 449 of 6041 when claiming to be libsass).

• Very basic support for media queries.
• Implement more color functions (the internal representation of a color now uses Rational for the channels, to avoid rounding errors when using the result of one color function as input to another).
• More complete parsing of simple numbers.
• Support ambiguous imports, as examplified by basic test 33.
• Use the ? operator rather than the try! macro.
• Proper handling of escaped quotes in quoted strings (basic test 53).
• Miscellaneous internal cleanups and refactorings

Tested in rust 1.14, 1.15, and stable and nightly as of 2017-02-08.

Release 0.1.2 - 2017-01-29

Second release. Passes 380 tests of 6026 from sass-spec. Changes since 0.1.0 include:

• Basic pseudo-classes.
• Functions return a Result (so they can fail without panic). Note that all other error handling is still simply panics.
• Implemented functions str-slice, str-insert, str-length.
• Documentation

Release 0.1.0 - 2017-01-22

First release to crates.io. Passes 346 tests of the sass-spec suite.

Initial commit - 2016-12-20

The first three tests (of several thousand) works. :-)