sabberworm/php-css-parser

What's Changed

Deprecated

• Deprecate support for PHP 7.2 and 7.3 (#1565)

Fixed

• Allow CSS containing only whitespace or comments (#1593)
• Only allow strings as LineName components (#1590)

Full Changelog: v9.3.0...v9.4.0

Deprecated

• Deprecate support for PHP 7.2 and 7.3 (#1565)

Fixed

• Allow CSS containing only whitespace or comments (#1593)
• Only allow strings as LineName components (#1590)

Added

• Add support for modern CSS at-rules: @layer, @scope, and @starting-style (#1549)

Fixed

• Avoid double autoloading of class aliases (#1552)

New Contributors

• @AnReiter made their first contribution in #1551

Full Changelog: v9.2.0...v9.3.0

Added

• Add support for modern CSS at-rules: @layer, @scope, and @starting-style (#1549)

Fixed

• Avoid double autoloading of class aliases (#1552)

Documentation

Added

• Add OutputFormat::setSpaceAroundSelectorCombinator() (#1504)
• Add support for escaped quotes in the selectors (#1485, #1489)
• Provide line number in exception message for mismatched parentheses in
  selector (#1435)
• Add support for CSS container queries (#1400)

Changed

• RuleSet\RuleContainer is renamed to RuleSet\DeclarationList (#1530, #1539)
• Methods like setRule() in RuleSet and DeclarationBlock have been renamed
  to setDeclaration(), etc. (#1521)
• Rule\Rule class is renamed to Property\Declaration
  (#1508, #1512, #1513, #1522)
• Rule::setRule() and getRule() are replaced with setPropertyName() and
  getPropertyName() (#1506)
• Selector is now represented as a sequence of Selector\Component objects
  which can be accessed via getComponents(), manipulated individually, or set
  via setComponents() (#1478, #1486, #1487, #1488, #1494, #1496, #1536, #1537)
• Selector::setSelector() and Selector constructor will now throw exception
  upon provision of an invalid selectior (#1498, #1502)
• Clean up extra whitespace in CSS selector (#1398)
• The array keys passed to DeclarationBlock::setSelectors() are no longer
  preserved (#1407)

Deprecated

• RuleSet\RuleContainer is deprecated; use RuleSet\DeclarationList instead
  (#1530)
• Methods like setRule() in RuleSet and DeclarationBlock are deprecated;
  there are direct replacements such as setDeclaration() (#1521)
• Rule\Rule class is deprecated; Property\Declaration is a direct
  replacement (#1508)
• Rule::setRule() and getRule() are deprecated and replaced with
  setPropertyName() and getPropertyName() (#1506, #1519)

Fixed

• Do not escape characters that do not need escaping in CSS string (#1444)
• Reject selector comprising only whitespace (#1433)
• Improve recovery parsing when a rogue } is encountered (#1425, #1426)
• Parse comment(s) immediately preceding a selector (#1421, #1424)
• Parse consecutive comments (#1421)
• Support attribute selectors with values containing commas in
  DeclarationBlock::setSelectors() (#1419)
• Allow removeDeclarationBlockBySelector() to be order-insensitve (#1406)
• Fix parsing of calc expressions when a newline immediately precedes or
  follows a + or - operator (#1399)
• Use typesafe versions of PHP functions (#1379, #1380, #1382, #1383, #1384)

New Contributors

• @scq made their first contribution in #1399
• @8ctopus made their first contribution in #1398
• @samuil-banti-wpenigne made their first contribution in #1485

Full Changelog: v9.1.0...v9.2.0

Added

• Add OutputFormat::setSpaceAroundSelectorCombinator() (#1504)
• Add support for escaped quotes in the selectors (#1485, #1489)
• Provide line number in exception message for mismatched parentheses in selector (#1435)
• Add support for CSS container queries (#1400)

Changed

• RuleSet\RuleContainer is renamed to RuleSet\DeclarationList (#1530, #1539)
• Methods like setRule() in RuleSet and DeclarationBlock have been renamed to setDeclaration(), etc. (#1521)
• Rule\Rule class is renamed to Property\Declaration (#1508, #1512, #1513, #1522)
• Rule::setRule() and getRule() are replaced with setPropertyName() and getPropertyName() (#1506)
• Selector is now represented as a sequence of Selector\Component objects which can be accessed via getComponents(), manipulated individually, or set via setComponents() (#1478, #1486, #1487, #1488, #1494, #1496, #1536, #1537)
• Selector::setSelector() and Selector constructor will now throw exception upon provision of an invalid selectior (#1498, #1502)
• Clean up extra whitespace in CSS selector (#1398)
• The array keys passed to DeclarationBlock::setSelectors() are no longer preserved (#1407)

Deprecated

• RuleSet\RuleContainer is deprecated; use RuleSet\DeclarationList instead (#1530)
• Methods like setRule() in RuleSet and DeclarationBlock are deprecated; there are direct replacements such as setDeclaration() (#1521)
• Rule\Rule class is deprecated; Property\Declaration is a direct replacement (#1508)
• Rule::setRule() and getRule() are deprecated and replaced with setPropertyName() and getPropertyName() (#1506, #1519)

Fixed

• Do not escape characters that do not need escaping in CSS string (#1444)
• Reject selector comprising only whitespace (#1433)
• Improve recovery parsing when a rogue } is encountered (#1425, #1426)
• Parse comment(s) immediately preceding a selector (#1421, #1424)
• Parse consecutive comments (#1421)
• Support attribute selectors with values containing commas in DeclarationBlock::setSelectors() (#1419)
• Allow removeDeclarationBlockBySelector() to be order-insensitve (#1406)
• Fix parsing of calc expressions when a newline immediately precedes or follows a + or - operator (#1399)
• Use typesafe versions of PHP functions (#1379, #1380, #1382, #1383, #1384)

Added

• Add support for PHP 8.5 (#1355)

Fixed

• Improve performance of selector validation
  (avoiding silent PCRE catastrophic failure) (#1372)
• Use typesafe versions of PHP functions (#1368, #1370)

Added

• Add support for PHP 8.5 (#1355)

Fixed

• Improve performance of selector validation (avoiding silent PCRE catastrophic failure) (#1372)
• Use typesafe versions of PHP functions (#1368, #1370)

Added

• Interface RuleContainer for RuleSet Rule manipulation methods (#1256)
• Partial support for CSS Color Module Level 4:
  • rgb and rgba, and hsl and hsla are now aliases (#797)
  • Parse color functions that use the "modern" syntax (#800)
  • Render RGB functions with "modern" syntax when required (#840)
  • Support none as color function component value (#859)
• Add a class diagram to the README (#482)
• Add more tests (#449)

Changed

• DeclarationBlock no longer extends RuleSet and instead has a RuleSet as
  a property; use getRuleSet() to access it directly (#1194)
• The default line (and column) number is now null (not zero) (#1288)
• setPosition() (in Rule and other classes) now has fluent interface,
  returning itself (#1259)
• RuleSet::removeRule() now only allows Rule as the parameter
  (implementing classes are AtRuleSet and DeclarationBlock);
  use removeMatchingRules() or removeAllRules() for other functions (#1255)
• RuleSet::getRules() and getRulesAssoc() now only allow string or null
  as the parameter (implementing classes are AtRuleSet and DeclarationBlock)
  (#1253)
• Initialize KeyFrame properties to sensible defaults (#1146)
• Make OutputFormat final (#1128)
• Make Selector a Renderable (#1017)
• Only allow string for some OutputFormat properties (#885)
• Use more native type declarations and strict mode
  (#641, #772, #774, #778, #804, #841, #873, #875, #891, #922, #923, #933, #958,
  #964, #967, #1000, #1044, #1134, #1136, #1137, #1139, #1140, #1141, #1145,
  #1162, #1163, #1166, #1172, #1174, #1178, #1179, #1181, #1183, #1184, #1186,
  #1187, #1190, #1192, #1193, #1203)
• Add visibility to all class/interface constants (#469)

Removed

• Remove getLineNo() from these classes (use getLineNumber() instead):
  Comment, CSSList, SourceException, Charset, CSSNamespace, Import,
  Rule, DeclarationBlock, RuleSet, CSSFunction, Value (#1258)
• Remove Rule::getColNo() (use getColumnNumber() instead) (#1287)
• Passing a string as the first argument to getAllValues() is no longer
  supported and will not work;
  the search pattern should now be passed as the second argument (#1243)
• Passing a Boolean as the second argument to getAllValues() is no longer
  supported and will not work; the flag for searching in function arguments
  should now be passed as the third argument (#1243)
• Remove __toString() (#1046)
• Drop magic method forwarding in OutputFormat (#898)
• Drop atRuleArgs() from the AtRule interface (#1141)
• Remove OutputFormat::get() and ::set() (#1108, #1110)
• Drop special support for vendor prefixes (#1083)
• Remove the IE hack in Rule (#995)
• Drop getLineNo() from the Renderable interface (#1038)
• Remove OutputFormat::level() (#874)
• Remove expansion of shorthand properties (#838)
• Remove Parser::setCharset/getCharset (#808)
• Remove Rule::getValues() (#582)
• Remove Rule::setValues() (#562)
• Remove Document::getAllSelectors() (#561)
• Remove DeclarationBlock::getSelector() (#559)
• Remove DeclarationBlock::setSelector() (#560)
• Drop support for PHP < 7.2 (#420)

Fixed

• Remove trailing semicolon from declaration blocks with 'compact'
  OutputFormat (#1345)
• Parse selector functions (like :not) with comma-separated arguments (#1292)
• Parse quoted attribute selector value containing comma (#1323)
• Allow comma in selectors (e.g. :not(html, body)) (#1293)
• Insert Rule before sibling even with different property name
  (in RuleSet::addRule()) (#1270)
• Ensure RuleSet::addRule() sets non-negative column number when sibling
  provided (#1268)
• Don't render rgb colors with percentage values using hex notation (#803)

Documentation

• Add an API and deprecation policy (#720)

@ziegenberg is a new contributor to this release and did a lot of the heavy
lifting. Thanks! ❤️

Added

• Interface RuleContainer for RuleSet Rule manipulation methods (#1256)
• Partial support for CSS Color Module Level 4:
  • rgb and rgba, and hsl and hsla are now aliases (#797)
  • Parse color functions that use the "modern" syntax (#800)
  • Render RGB functions with "modern" syntax when required (#840)
  • Support none as color function component value (#859)
• Add a class diagram to the README (#482)
• Add more tests (#449)

Changed

• DeclarationBlock no longer extends RuleSet and instead has a RuleSet as a property; use getRuleSet() to access it directly (#1194)
• The default line (and column) number is now null (not zero) (#1288)
• setPosition() (in Rule and other classes) now has fluent interface, returning itself (#1259)
• RuleSet::removeRule() now only allows Rule as the parameter (implementing classes are AtRuleSet and DeclarationBlock); use removeMatchingRules() or removeAllRules() for other functions (#1255)
• RuleSet::getRules() and getRulesAssoc() now only allow string or null as the parameter (implementing classes are AtRuleSet and DeclarationBlock) (#1253)
• Initialize KeyFrame properties to sensible defaults (#1146)
• Make OutputFormat final (#1128)
• Make Selector a Renderable (#1017)
• Only allow string for some OutputFormat properties (#885)
• Use more native type declarations and strict mode (#641, #772, #774, #778, #804, #841, #873, #875, #891, #922, #923, #933, #958, #964, #967, #1000, #1044, #1134, #1136, #1137, #1139, #1140, #1141, #1145, #1162, #1163, #1166, #1172, #1174, #1178, #1179, #1181, #1183, #1184, #1186, #1187, #1190, #1192, #1193, #1203)
• Add visibility to all class/interface constants (#469)

Removed

• Remove getLineNo() from these classes (use getLineNumber() instead): Comment, CSSList, SourceException, Charset, CSSNamespace, Import, Rule, DeclarationBlock, RuleSet, CSSFunction, Value (#1258)
• Remove Rule::getColNo() (use getColumnNumber() instead) (#1287)
• Passing a string as the first argument to getAllValues() is no longer supported and will not work; the search pattern should now be passed as the second argument (#1243)
• Passing a Boolean as the second argument to getAllValues() is no longer supported and will not work; the flag for searching in function arguments should now be passed as the third argument (#1243)
• Remove __toString() (#1046)
• Drop magic method forwarding in OutputFormat (#898)
• Drop atRuleArgs() from the AtRule interface (#1141)
• Remove OutputFormat::get() and ::set() (#1108, #1110)
• Drop special support for vendor prefixes (#1083)
• Remove the IE hack in Rule (#995)
• Drop getLineNo() from the Renderable interface (#1038)
• Remove OutputFormat::level() (#874)
• Remove expansion of shorthand properties (#838)
• Remove Parser::setCharset/getCharset (#808)
• Remove Rule::getValues() (#582)
• Remove Rule::setValues() (#562)
• Remove Document::getAllSelectors() (#561)
• Remove DeclarationBlock::getSelector() (#559)
• Remove DeclarationBlock::setSelector() (#560)
• Drop support for PHP < 7.2 (#420)

Fixed

• Remove trailing semicolon from declaration blocks with 'compact' OutputFormat (#1345)
• Parse selector functions (like :not) with comma-separated arguments (#1292)
• Parse quoted attribute selector value containing comma (#1323)
• Allow comma in selectors (e.g. :not(html, body)) (#1293)
• Insert Rule before sibling even with different property name (in RuleSet::addRule()) (#1270)
• Ensure RuleSet::addRule() sets non-negative column number when sibling provided (#1268)
• Don't render rgb colors with percentage values using hex notation (#803)

Documentation

• Add an API and deprecation policy (#720)

@ziegenberg is a new contributor to this release and did a lot of the heavy lifting. Thanks! :heart:

Added

• RuleSet::removeMatchingRules() method
  (for the implementing classes AtRuleSet and DeclarationBlock) (#1249)
• RuleSet::removeAllRules() method
  (for the implementing classes AtRuleSet and DeclarationBlock) (#1249)
• Add Interface CSSElement (#1231)
• Methods getLineNumber and getColumnNumber which return a nullable int
  for the following classes:
  Comment, CSSList, SourceException, Charset, CSSNamespace, Import,
  Rule, DeclarationBlock, RuleSet, CSSFunction, Value (#1225, #1263)
• Positionable interface for CSS items that may have a position
  (line and perhaps column number) in the parsed CSS (#1221)

Changed

• Parameters for getAllValues() are deconflated, so it now takes three (all
  optional), allowing $element and $ruleSearchPattern to be specified
  separately (#1241)
• Implement Positionable in the following CSS item classes:
  Comment, CSSList, SourceException, Charset, CSSNamespace, Import,
  Rule, DeclarationBlock, RuleSet, CSSFunction, Value (#1225)

Deprecated

• Support for PHP < 7.2 is deprecated; version 9.0 will require PHP 7.2 or later
  (#1264)
• Passing a string or null to RuleSet::removeRule() is deprecated
  (implementing classes are AtRuleSet and DeclarationBlock);
  use removeMatchingRules() or removeAllRules() instead (#1249)
• Passing a Rule to RuleSet::getRules() or getRulesAssoc() is deprecated,
  affecting the implementing classes AtRuleSet and DeclarationBlock
  (call e.g. getRules($rule->getRule()) instead) (#1248)
• Passing a string as the first argument to getAllValues() is deprecated;
  the search pattern should now be passed as the second argument (#1241)
• Passing a Boolean as the second argument to getAllValues() is deprecated;
  the flag for searching in function arguments should now be passed as the third
  argument (#1241)
• getLineNo() is deprecated in these classes (use getLineNumber() instead):
  Comment, CSSList, SourceException, Charset, CSSNamespace, Import,
  Rule, DeclarationBlock, RuleSet, CSSFunction, Value (#1225, #1233)
• Rule::getColNo() is deprecated (use getColumnNumber() instead)
  (#1225, #1233)
• Providing zero as the line number argument to Rule::setPosition() is
  deprecated (pass null instead if there is no line number) (#1225, #1233)

Fixed

• Set line number when RuleSet::addRule() called with only column number set
  (#1265)
• Ensure first rule added with RuleSet::addRule() has valid position (#1262)

Added

• RuleSet::removeMatchingRules() method (for the implementing classes AtRuleSet and DeclarationBlock) (#1249)
• RuleSet::removeAllRules() method (for the implementing classes AtRuleSet and DeclarationBlock) (#1249)
• Add Interface CSSElement (#1231)
• Methods getLineNumber and getColumnNumber which return a nullable int for the following classes: Comment, CSSList, SourceException, Charset, CSSNamespace, Import, Rule, DeclarationBlock, RuleSet, CSSFunction, Value (#1225, #1263)
• Positionable interface for CSS items that may have a position (line and perhaps column number) in the parsed CSS (#1221)

Changed

• Parameters for getAllValues() are deconflated, so it now takes three (all optional), allowing $element and $ruleSearchPattern to be specified separately (#1241)
• Implement Positionable in the following CSS item classes: Comment, CSSList, SourceException, Charset, CSSNamespace, Import, Rule, DeclarationBlock, RuleSet, CSSFunction, Value (#1225)

Deprecated

• Support for PHP < 7.2 is deprecated; version 9.0 will require PHP 7.2 or later (#1264)
• Passing a string or null to RuleSet::removeRule() is deprecated (implementing classes are AtRuleSet and DeclarationBlock); use removeMatchingRules() or removeAllRules() instead (#1249)
• Passing a Rule to RuleSet::getRules() or getRulesAssoc() is deprecated, affecting the implementing classes AtRuleSet and DeclarationBlock (call e.g. getRules($rule->getRule()) instead) (#1248)
• Passing a string as the first argument to getAllValues() is deprecated; the search pattern should now be passed as the second argument (#1241)
• Passing a Boolean as the second argument to getAllValues() is deprecated; the flag for searching in function arguments should now be passed as the third argument (#1241)
• getLineNo() is deprecated in these classes (use getLineNumber() instead): Comment, CSSList, SourceException, Charset, CSSNamespace, Import, Rule, DeclarationBlock, RuleSet, CSSFunction, Value (#1225, #1233)
• Rule::getColNo() is deprecated (use getColumnNumber() instead) (#1225, #1233)
• Providing zero as the line number argument to Rule::setPosition() is deprecated (pass null instead if there is no line number) (#1225, #1233)

Fixed

• Set line number when RuleSet::addRule() called with only column number set (#1265)
• Ensure first rule added with RuleSet::addRule() has valid position (#1262)

Added

• OutputFormat properties for space around specific list separators (#880)

Changed

• Mark the OutputFormat constructor as @internal (#1131)
• Mark OutputFormatter as @internal (#896)
• Mark Selector::isValid() as @internal (#1037)
• Mark parsing-related methods of most CSS elements as @internal (#908)
• Mark OutputFormat::nextLevel() as @internal (#901)
• Make all non-private properties @internal (#886)

Deprecated

• Deprecate extending OutputFormat (#1131)
• Deprecate OutputFormat::get() and ::set() (#1107)
• Deprecate support for -webkit-calc and -moz-calc (#1086)
• Deprecate magic method forwarding from OutputFormat to OutputFormatter
  (#894)
• Deprecate __toString() (#1006)
• Deprecate greedy calculation of selector specificity (#1018)
• Deprecate the IE hack in Rule (#993, #1003)
• OutputFormat properties for space around list separators as an array (#880)
• Deprecate OutputFormat::level() (#870)

Fixed

• Include comments for all rules in declaration block (#1169)
• Render rules in line and column number order (#1059)
• Create Size with correct types in expandBackgroundShorthand (#814)
• Parse @font-face src property as comma-delimited list (#794)

Added

• OutputFormat properties for space around specific list separators (#880)

Changed

• Mark the OutputFormat constructor as @internal (#1131)
• Mark OutputFormatter as @internal (#896)
• Mark Selector::isValid() as @internal (#1037)
• Mark parsing-related methods of most CSS elements as @internal (#908)
• Mark OutputFormat::nextLevel() as @internal (#901)
• Make all non-private properties @internal (#886)

Deprecated

• Deprecate extending OutputFormat (#1131)
• Deprecate OutputFormat::get() and ::set() (#1107)
• Deprecate support for -webkit-calc and -moz-calc (#1086)
• Deprecate magic method forwarding from OutputFormat to OutputFormatter (#894)
• Deprecate __toString() (#1006)
• Deprecate greedy calculation of selector specificity (#1018)
• Deprecate the IE hack in Rule (#993, #1003)
• OutputFormat properties for space around list separators as an array (#880)
• Deprecate OutputFormat::level() (#870)

Fixed

• Include comments for all rules in declaration block (#1169)
• Render rules in line and column number order (#1059)
• Create Size with correct types in expandBackgroundShorthand (#814)
• Parse @font-face src property as comma-delimited list (#794)

Added

• Add support for PHP 8.4 (#675, #701, #746, #751)

Changed

• Mark parsing-internal classes and methods as @internal (#711)
• Block installations on unsupported higher PHP versions (#691)

Deprecated

• Deprecate the expansion of shorthand properties (#719)
• Deprecate Parser::setCharset() and Parser::getCharset() (#703)

Added

• Add support for PHP 8.4 (#643, #657)

Changed

• Mark parsing-internal classes and methods as @internal (#674)
• Block installations on unsupported higher PHP versions (#691)

Deprecated

• Deprecate the expansion of shorthand properties (#578, #580, #579, #577, #576, #575, #574, #573, #572, #571, #570, #569, #566, #567, #558, #714)
• Deprecate Parser::setCharset() and Parser::getCharset() (#688)

Fixed

• Fix type errors in PHP strict mode (#664)

Added

• Support arithmetic operators in CSS function arguments (#607)
• Add support for inserting an item in a CSS list (#545)
• Add support for the dvh, lvh and svh length units (#415)

Changed

• Improve performance of Value::parseValue with many delimiters by refactoring to remove array_search() (#413)

Added

• Support arithmetic operators in CSS function arguments (#607)
• Add support for inserting an item in a CSS list (#545)
• Add support for the dvh, lvh and svh length units (#415)

Changed

• Improve performance of Value::parseValue with many delimiters by refactoring to remove array_search() (#413)

Changed

• Mark all class constants as @internal (#500)

Fixed

• Fix undefined local variable in CalcFunction::parse() (#593)

Changed

• Mark all class constants as @internal (#472)

Fixed

• Fix undefined local variable in CalcFunction::parse() (#593)

Fixed

• Fix PHP notice caused by parsing invalid color values having less than 6 characters (#485)
• Fix (regression) failure to parse at-rules with strict parsing (#456)

Added

• Add a method to get an import's media queries (#384)
• Add more unit tests (#381, #382)

Fixed

• Retain CSSList and Rule comments when rendering CSS (#351)
• Replace invalid turns unit with turn (#350)
• Also allow string values for rules (#348)
• Fix invalid calc parsing (#169)
• Handle scientific notation when parsing sizes (#179)
• Fix PHP 8.1 compatibility in ParserState::strsplit() (#344)

Features

• Support for PHP 8.x
• PHPDoc annotations
• Allow usage of CSS variables inside color functions (by parsing them as regular functions)
• Use PSR-12 code style
• No deprecations

Bugfixes

• Improved handling of whitespace in calc()
• Fix parsing units whose prefix is also a valid unit, like vmin
• Allow passing an object to CSSList#replace
• Fix PHP 7.3 warnings
• Correctly parse keyframes with %
• Don’t convert large numbers to scientific notation
• Allow a file to end after an @import
• Preserve case of CSS variables as specced
• Allow identifiers to use escapes the same way as strings
• No longer use eval for the comparison in getSelectorsBySpecificity, in case it gets passed untrusted input (CVE-2020-13756). Also fixed in 8.3.1, 8.2.1, 8.1.1, 8.0.1, 7.0.4, 6.0.2, 5.2.1, 5.1.3, 5.0.9, 4.0.1, 3.0.1, 2.0.1, 1.0.1.
• Prevent an infinite loop when parsing invalid grid line names
• Remove invalid unit vm
• Retain rule order after expanding shorthands

Backwards-incompatible changes

• PHP ≥ 5.6 is now required
• HHVM compatibility target dropped

• Refactor parsing logic to mostly reside in the class files whose data structure is to be parsed (this should eventually allow us to unit-test specific parts of the parsing logic individually).
• Fix error in parsing calc expessions when the first operand is a negative number, thanks to @raxbg.
• Support parsing CSS4 colors in hex notation with alpha values, thanks to @raxbg.
• Swallow more errors in lenient mode, thanks to @raxbg.
• Allow specifying arbitrary strings to output before and after declaration blocks, thanks to @westonruter.
• No backwards-incompatible changes
• No deprecations

• Support parsing calc(), thanks to @raxbg.
• Support parsing grid-lines, again thanks to @raxbg.
• Support parsing legacy IE filters (progid:) in lenient mode, thanks to @FMCorz
• Performance improvements parsing large files, again thanks to @FMCorz
• No backwards-incompatible changes
• No deprecations

• Comments are no longer silently ignored but stored with the object with which they appear (no render support, though). Thanks to @FMCorz.
• The IE hacks using \0 and \9 can now be parsed (and rendered) in lenient mode. Thanks (again) to @FMCorz.
• Media queries with or without spaces before the query are parsed. Still no real parsing support, though. Sorry…
• PHPUnit is now listed as a dev-dependency in composer.json.
• No backwards-incompatible changes
• No deprecations

• Store source CSS line numbers in tokens and parsing exceptions.
• No deprecations

Backwards-incompatible changes

• Unrecoverable parser errors throw an exception of type Sabberworm\CSS\Parsing\SourceException instead of \Exception.

• Fixed parsing empty CSS when multibyte is off
• No backwards-incompatible changes
• No deprecations

• 150 time performance boost thanks to @ossinkine
• No backwards-incompatible changes
• No deprecations

• No more suppressed E_NOTICE
• No backwards-incompatible changes
• No deprecations

• Compatibility with PHP 7. Well timed, eh?
• No deprecations

Backwards-incompatible changes

• The Sabberworm\CSS\Value\String class has been renamed to Sabberworm\CSS\Value\CSSString.

• Remove some declarations in interfaces incompatible with PHP 5.3 (< 5.3.9)
• No deprecations

• Format output using Sabberworm\CSS\OutputFormat
• No backwards-incompatible changes

Deprecations

• The parse() method replaces __toString with an optional argument (instance of the OutputFormat class)

• Support removing a selector from a declaration block using $oBlock->removeSelector($mSelector)

• Introduce a specialized exception (Sabberworm\CSS\Parsing\OuputException) for exceptions during output rendering

• No deprecations

Backwards-incompatible changes

• Outputting a declaration block that has no selectors throws an OuputException instead of outputting an invalid {…} into the CSS document.

• Remove the use of consumeUntil in comment parsing. This makes it possible to parse comments such as /** Perfectly valid **/
• Add fr relative size unit
• Fix some issues with HHVM
• No backwards-incompatible changes
• No deprecations

• Updated CHANGELOG.md to reflect changes since 5.0.4
• No backwards-incompatible changes
• No deprecations

• Performance enhancements by Michael M Slusarz
• More rescue entry points for lenient parsing (unexpected tokens between declaration blocks and unclosed comments)
• No backwards-incompatible changes
• No deprecations

• Make default settings’ multibyte parsing option dependent on whether or not the mbstring extension is actually installed.
• No backwards-incompatible changes
• No deprecations

• Fix broken decimal point output optimization
• No backwards-incompatible changes
• No deprecations

• Fix broken unit test
• No backwards-incompatible changes
• No deprecations

• Initial support for lenient parsing (setting this parser option will catch some exceptions internally and recover the parser’s state as neatly as possible).
• No backwards-incompatible changes
• No deprecations

• Don’t output floats with locale-aware separator chars
• No backwards-incompatible changes
• No deprecations

• More size units recognized
• No backwards-incompatible changes
• No deprecations

• CHANGELOG.md file added to distribution
• No backwards-incompatible changes
• No deprecations

• Internal cleanup
• No backwards-incompatible changes
• No deprecations

• Correctly parse all known CSS 3 units (including Hz and kHz).
• Output RGB colors in short (#aaa or #ababab) notation
• Be case-insensitive when parsing identifiers.
• No deprecations

Backwards-incompatible changes

• Sabberworm\CSS\Value\Color’s __toString method overrides CSSList’s to maybe return something other than type(value, …) (see above).

• Support for more @-rules
• Generic interface Sabberworm\CSS\Property\AtRule, implemented by all @-rule classes
• No deprecations

Backwards-incompatible changes

• Sabberworm\CSS\RuleSet\AtRule renamed to Sabberworm\CSS\RuleSet\AtRuleSet
• Sabberworm\CSS\CSSList\MediaQuery renamed to Sabberworm\CSS\RuleSet\CSSList\AtRuleBlockList with differing semantics and API (which also works for other block-list-based @-rules like @supports).

• Support for lenient parsing (on by default)
• No deprecations

Backwards-incompatible changes

• All properties (like whether or not to use mb_-functions, which default charset to use and – new – whether or not to be forgiving when parsing) are now encapsulated in an instance of Sabberworm\CSS\Settings which can be passed as the second argument to Sabberworm\CSS\Parser->__construct().
• Specifying a charset as the second argument to Sabberworm\CSS\Parser->__construct() is no longer supported. Use Sabberworm\CSS\Settings::create()->withDefaultCharset('some-charset') instead.
• Setting Sabberworm\CSS\Parser->bUseMbFunctions has no effect. Use Sabberworm\CSS\Settings::create()->withMultibyteSupport(true/false) instead.
• Sabberworm\CSS\Parser->parse() may throw a Sabberworm\CSS\Parsing\UnexpectedTokenException when in strict parsing mode.

• Allow multiple rules of the same type per rule set

Backwards-incompatible changes

• Sabberworm\CSS\RuleSet->getRules() returns an index-based array instead of an associative array. Use Sabberworm\CSS\RuleSet->getRulesAssoc() (which eliminates duplicate rules and lets the later rule of the same name win).
• Sabberworm\CSS\RuleSet->removeRule() works as it did before except when passed an instance of Sabberworm\CSS\Rule\Rule, in which case it would only remove the exact rule given instead of all the rules of the same type. To get the old behaviour, use Sabberworm\CSS\RuleSet->removeRule($oRule->getRule();