This is a modest release focused continues to address some regressions as well general improvements to @extend 🚑 with sprinkling of improvements to the C API 🎉

Expose our memory allocator

This feature has taken many proposed forms over the last 4 months. After much patent and considered discussion by @am11 @mgreter @saper and @xoofx you can now access our memory allocator on the C-API.

void* sass_alloc_memory(size_t size)
char* sass_copy_c_string(const char* str)
void sass_free_memory(void* ptr)

Features

• Re-add sass_option_push_include_path and sass_option_push_plugin_path (@xoofx, #1974)

Build

• Enable address sanitizer for clang (@mgreter, #2003)
• MSVC assert too strict (@mgreter, #1985)
• Update Sass spec (@xzyfer, 1967)

Fixes

• Incorrectly erring on @extend and @media (@mgreter, #2009 #2007, #1927, #1923)
• Incorrectly erring on @extend and interpolated selectors (@mgreter, #2000)
• Builds not failing when Sass spec fails to load (@saper, #1997)
• Incorrectly erring on Sass comments in selectors (@mgreter, #1996)
• Incorrectly erring on @extend and interpolated selectors with the !optional flag (@mgreter, #1993)
• Incorrectly treating 0 and false as the same value when used as map keys (@mgreter, #1991)
• Incorrectly erring on escaped and unicode selectors (@mgreter, #1977)
• Incorrectly rendering @extend and @supports (@mgreter, #1971)
• Incorrectly erring on functions beginning with calc (@mgreter, #1969)
• Incorrectly quoting interpolated strings in selectors (@mgreter, #1947)
• Incorrectly escaped escaped strings in selectors (@mgreter, #1945)
• Incorrectly duplicating executing of function in interpolated string (@mgreter, #1944)
• Prevent parsing url() resulting in an endless loop (@mgreter, #1931)
• Compilation error with using -DDEBUG flag (@tony, #1917)
• Incorrectly removing @media blocks that contain only CSS comments (@mgreter, #1889)
• Better handling of / in function arguments (@mgreter, #1417)

Special thanks to @am11, @tony, @xoofx for their contributions to this release! 👏