Release 0.13.0

Progress: 1634 of 3502 tests passed in libsass compatiblilty 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

Progress: 3583 of 5101 tests passed in libsass compatibility mode. (The progress here was accidentally miscalculated, including libsass skips in the number of passed tests).

• 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

• 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

• 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

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

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

• 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.
• Command-line changes:
  • Support -I argument for include path.
  • Use lower-case -v for version (expected by the test runner).
• Some color function improvements:
  • Handle alpha percentetges in rgba.
  • The rgb function can be used as rgba with four args.
  • Use alpha properly 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

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

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

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).