Changelog

v5.0.0

Added:

Add support for Lessjs 3.5.0 calc() exception (Piotr Miazga) T367186
Add support for CSS Grid syntax (Dringsim) T288498
Add support for \9 escapes in CSS keyword (Dringsim) T288498
Add Less_Parser "math" option, renamed from strictMath (Hannah Okwelum) T366445

Changed:

Change Less_Parser "math" default from "always" to "parens-division" (Hannah Okwelum) T366445
Change Less_Version::less_version to "3.13.3". This end compatibility support of Less.js 2.5.3. Less.php 5.0 and later will target Less.js 3.13.1 behaviour instead. (Piotr Miazga)

Removed:

Remove import_callback Less_Parser option (Hannah Okwelum)
Remove backtick evaluation inside quoted strings (Bartosz Dziewoński)
Remove Less_Parser::AllParsedFiles() (Hannah Okwelum)
Remove Less_Parser->SetInput() public method, now private (Hannah Okwelum)
Remove Less_Parser->CacheFile() public method, now private (Hannah Okwelum)
Remove Less_Parser->UnsetInput() public method, now private (Hannah Okwelum)
Remove Less_Parser->save() public method, now private (Hannah Okwelum)

v4.4.1

Fixed:

Update Less_Version::version and bump Less_Version::cache_version (Timo Tijhof)

v4.4.0

Added:

Add image-size() function, disable base64 for SVG data-uri() (Hannah Okwelum) T353147
Improve support for preserving !important via variables (Piotr Miazga) T362341
Add support for include path inside data-uri() (Hannah Okwelum) T364871

Changed, to match Less.js 2.5.3:

Fix multiplication of mixed units to preserve the first unit (Piotr Miazga) T362341

Fixed:

Fix checking of guard conditions in nested mixins (Hannah Okwelum) T352867
Less_Functions: Avoid clobbering clamp() with internal helper (Timo Tijhof) T363728

v4.3.0

Added:

Support interpolated variable imports, via ImportVisitor (Hannah Okwelum) T353133
Support rulesets as default values of a mixin parameter (Hannah Okwelum) T353143
Support ... expand operator in mixin calls (Piotr Miazga) T352897
Improve support for @import (reference) matching Less.js 2.x (Hannah Okwelum) T362647

Changed:

Improve mix() argument exception message to mention given arg type (Timo Tijhof)
The Less_Tree_Import->getPath() method now reflects the path as written in the source code, without auto-appended .less suffix, matching upstream Less.js 2.5.3 behaviour. This internal detail is exposed via the deprecated import_callback parser option. It is recommended to migrate to Less_Parser->SetImportDirs, which doesn't expose internals, and is unaffected by this change.

Deprecated:

Deprecate import_callback Less_Parser option. Use Less_Parser->SetImportDirs with callback instead.
Deprecate Less_Parser->SetInput() as public method. Use Less_Parser->parseFile() instead.
Deprecate Less_Parser->CacheFile() as public method. Use Less_Cache API instead.
Deprecate Less_Parser::AllParsedFiles() as static method. Use Less_Parser->getParsedFiles() instead.
Deprecate Less_Parser->UnsetInput() as public method, considered internal.
Deprecate Less_Parser->save() as public method, considered internal.

Fixed:

Fix replace() when passed multiple replacements (Roan Kattouw) T358631
Fix unexpected duplicating of uncalled mixin rules (Hannah Okwelum) T363076
Fix ParseError for comments after rule name or in @keyframes (Piotr Miazga) T353131
Fix ParseError for comments in more places and preserve them (Piotr Miazga) T353132
Fix ParseError effecting pseudo classes with when guards (Piotr Miazga) T353144
Fix preservation of units in some cases (Timo Tijhof) T360065
Less_Parser: Faster matching by inlining matcher() chains (Timo Tijhof)
Less_Parser: Faster matching with matchStr() method (Timo Tijhof)

v4.2.1

Added:

Add support for /deep/ selectors (Hannah Okwelum) T352862

Fixed:

Fix ParseError in some division expressions (Hannah Okwelum) T358256
Fix when() matching between string and non-string (Timo Tijhof) T358159
Preserve whitespace before ; or ! in simple rules (Hannah Okwelum) T352911

v4.2.0

Added:

Add isruleset() function (Hannah Okwelum) T354895
Add source details to "Operation on an invalid type" error (Hannah Okwelum) T344197
Add support for method=relative parameter in color functions (Hannah Okwelum) T354895
Add support for comments in variables and function parameters (Hannah Okwelum) T354895
Less_Parser: Add functions parser option API (Hannah Okwelum)

Changed, to match Less.js 2.5.3:

Preserve original color keywords and shorthand hex (Hannah Okwelum) T352866

Fixed:

Fix PHP Warning when using a dynamic variable name like @@name (Hannah Okwelum) T352830
Fix PHP Warning when @extend path contains non-quoted attribute (Gr8b) T349433
Less_Parser: Faster skipWhitespace by using native strspn (Umherirrender)
Less_Parser: Fix Less_Tree_JavaScript references to consistently be in camel-case (Stefan Fröhlich)
Fix !important in nested mixins (Hannah Okwelum) T353141
Fix crash when using recursive mixins (Timo Tijhof) T352829
Fix disappearing selectors in certain nested blocks (Hannah Okwelum) T352859
Fix Less_Exception_Compiler when passing unquoted value to color() (Hannah Okwelum) T353289
Fix order of comments in @font-face blocks (Timo Tijhof) T356706
Fix string comparison to ignore quote type (Timo Tijhof) T357160
Fix string interpolation in selectors (Hannah Okwelum) T353142

v4.1.1

Less_Parser: Faster MatchQuoted by using native strcspn. (Thiemo Kreuz)
Less_Parser: Faster parseEntitiesQuoted by inlining MatchQuoted. (Thiemo Kreuz)
Less_Parser: Faster parseUnicodeDescriptor and parseEntitiesJavascript by first-char checks. (Thiemo Kreuz)
Less_Tree_Mixin_Call: Include mixin name in error message (Jeremy P)
Fix mismatched casing in class names to fix autoloading on case-sensitive filesystems (Jeremy P)

v4.1.0

Add support for @supports blocks. (Anne Tomasevich) T332923
Less_Parser: Returning a URI from SetImportDirs() callbacks is now optional. (Timo Tijhof)

v4.0.0

Remove support for PHP 7.2 and 7.3. Raise requirement to PHP 7.4+.
Remove support for cache_method=php and cache_method=var_export, only the faster and more secure cache_method=serialize is now available. The built-in cache remains disabled by default.
Fix url(#myid) to be treated as absolute URL. T331649
Fix "Undefined property" PHP 8.1 warning when calc() is used with CSS var(). T331688
Less_Parser: Improve performance by removing MatchFuncs and NewObj overhead. (Timo Tijhof)

v3.2.1

Tree_Ruleset: Fix support for nested parent selectors (Timo Tijhof) T204816
Fix ParseError when interpolating variable after colon in selector (Timo Tijhof) T327163
Functions: Fix "Undefined property" warning on bad minmax arg
Tree_Call: Include previous exception when catching functions (Robert Frunzke)

v3.2.0

Fix "Implicit conversion" PHP 8.1 warnings (Ayokunle Odusan)
Fix "Creation of dynamic property" PHP 8.2 warnings (Bas Couwenberg)
Fix "Creation of dynamic property" PHP 8.2 warnings (Rajesh Kumar)
Tree_Url: Add support for "Url" type to Parser::getVariables() (ciroarcadio) #51
Tree_Import: Add support for importing URLs without file extension (Timo Tijhof) #27

v3.1.0

Add PHP 8.0 support: Drop use of curly braces for sub-string eval (James D. Forrester)
Make Directive::__construct $rules arg optional (fix PHP 7.4 warning) (Sam Reed)
ProcessExtends: Improve performance by using a map for selectors and parents (Andrey Legayev)

v3.0.0

Raise PHP requirement from 7.1 to 7.2.9 (James Forrester)

v2.0.0

Relax PHP requirement down to 7.1, from 7.2.9 (Franz Liedke)
Reflect recent breaking changes properly with the semantic versioning (James Forrester)

v1.8.2

Require PHP 7.2.9+, up from 5.3+ (James Forrester)
release: Update Version.php with the current release ID (COBadger)
Fix access array offset on value of type null (Michele Locati)
Fix test suite on PHP 7.4 (Sergei Morozov)

v1.8.1

Another PHP 7.3 compatibility tweak

v1.8.0

Library forked by Wikimedia, from oyejorge/less.php.

Supports up to PHP 7.3
No longer tested against PHP 5, though it's still remains allowed in composer.json for HHVM compatibility
Switched to semantic versioning, hence version numbers now use 3 digits

v1.7.0.13

Fix composer.json (PSR-4 was invalid)

v1.7.0.12

set bin/lessc bit executable
Add gettingVariables method to Less_Parser

v1.7.0.11

Fix realpath issue (windows)
Set Less_Tree_Call property back to public ( Fix 258 266 267 issues from oyejorge/less.php)

v1.7.0.10

Add indentation option
Add optional modifier for @import
Fix $color in Exception messages
take relative-url into account when building the cache filename
urlArgs should be string no array()
fix missing on NameValue type #269

v1.7.0.9

Remove space at beginning of Version.php
Revert require() paths in test interface