Sourced from haml's releases.

6.0.1

• Unescape HTML-safe interpolation on Rails #1084
• Resurrect Haml 5's AttributeParser.available? for syntax_tree-haml #1085

6.0.0

Haml 6 became 1.7x faster than Haml 5, and it's now faster than Slim and Erubi in this benchmark that was originally written by Slim developers.

$ bundle exec ruby benchmark/slim/run-benchmarks.rb
Calculating -------------------------------------
       erubi v1.11.0    34.595k i/100ms
         slim v4.1.0    30.931k i/100ms
  haml v6.0.0.beta.1    35.621k i/100ms
-------------------------------------------------
       erubi v1.11.0    411.827k (± 0.4%) i/s -      2.076M
         slim v4.1.0    361.660k (± 0.4%) i/s -      1.825M
  haml v6.0.0.beta.1    427.207k (± 0.6%) i/s -      2.137M
Comparison:
haml v6.0.0.beta.1:   427206.9 i/s
erubi v1.11.0:   411826.6 i/s - 1.04x slower
slim v4.1.0:   361659.8 i/s - 1.18x slower

Changes

• Replace the implementation with Hamlit
  • Haml 6 is about 1.7x faster than Haml 5 in this benchmark.
  • The parser is kept as is, but everything else is replaced.
  • The haml CLI interface was also replaced.
  • The interface of Haml::Engine is changed. Haml::Template is most likely what you need now.
  • Most Haml helpers are removed.
    • Rails:
      • Kept: find_and_reserve, preserve, surround, precede, succeed, capture_haml
      • Removed: block_is_haml?, flatten, haml_concat, haml_indent, haml_tag, haml_tag_if, html_attrs, html_escape, init_haml_helpers, is_haml?, list_of, non_haml, tab_down, tab_up, with_tabs
    • Tilt:
      • Kept: preserve
      • Removed: block_is_haml?, capture_haml, escape_once, find_and_preserve, flatten, haml_concat, haml_indent, haml_tag, haml_tag_if, html_attrs, html_escape, init_haml_helpers, is_haml?, list_of, non_haml, precede, succeed, surround, tab_down, tab_up, with_tabs
  • Only the attributes in Haml::AttributeBuilder::BOOLEAN_ATTRIBUTES are handled as boolean attributes.
  • Some legacy Rails integration is removed.

6.0.0.beta.1

Haml 6 became 1.7x faster than Haml 5, and it's now faster than Slim and Erubi in this benchmark that was originally written by Slim developers.

$ bundle exec ruby benchmark/slim/run-benchmarks.rb
</tr></table> 

... (truncated)

Sourced from haml's changelog.

6.0.12

• Fix a whitespace removal with > and an if-else statement #1114

6.0.11

• Fix a whitespace removal with > and an if statement #1114

6.0.10

• Evaluate :erb filter in the template context like Haml 5

6.0.9

• Support sass-embedded #1112

6.0.8

• Support interpolation in HTML comments, which has not been working since 6.0.0 #1107

6.0.7

• Haml::Engine and Haml::Template use StringBuffer instead of ArrayBuffer
  • It seems more performant in many cases with recent Ruby versions.
  • Haml::RailsTemplate is not affected.

6.0.6

• Prevent CRuby from accidentally using the Ruby implementation fallback
  • Reversing what v6.0.3 and v6.0.4 did, but still supporting Wasm.

6.0.5

• Resurrect #haml_object_ref support in an object reference #1097
  • This was removed in 6.0.0, and added back in this version.
• Stop warning remove_whitespace: true option.

6.0.4

Released on October 2, 2022 (diff).

• Fix a parse failure of % in attributes #1096
• Add another fallback from C to Ruby for Wasm.

6.0.3

Released on September 28, 2022 (diff).

... (truncated)

• 26bccf9 Version 6.0.12
• 4017be9 Fix whitespace handling for if-else
• 12d78a6 Version 6.0.11
• 25b1f5d Support removing top-level whitespaces (#1116)
• 828f29e Update reference about data attributes
• c36070c Improve changelog
• c5c8839 Version 6.0.19
• d7ecc85 Run :erb filter in the template context
• 6abb15c Version 6.0.9
• 64f5a88 Support sass-embedded (#1112)
• Additional commits viewable in compare view

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