Lexer/Parser

• Add support for <%graphql %> tags by @marcoroth in #973
• HTML tags treat as case-insensitive by @kudoas in #968
• Introduce ERBMultipleBlocksInTagError by @marcoroth in #971
• Fix parsing < and > characters in text content by @marcoroth in #974

Linter

• Account for meta[media] in html-no-duplicate-meta-names rule by @marcoroth in #958
• Lowercase both opening/closing tag when fixing html-tag-name-lowercase offense by @kudoas in #976

Language Server

• Add Unnecessary diagnostics for all ERB nodes by @marcoroth in #947

Engine

• Ignore <%graphql %> tags when compiling templates by @marcoroth in #988

Documentation

• Fix file name in Linter Custom Rules example code by @kozy4324 in #966

Dependencies

• Bump esbuild from 0.27.0 to 0.27.1 by @dependabot[bot] in #962
• Bump yaml from 2.8.1 to 2.8.2 by @dependabot[bot] in #960
• Bump vitepress-plugin-group-icons from 1.6.3 to 1.6.5 by @dependabot[bot] in #961
• Bump tsup from 8.5.0 to 8.5.1 by @dependabot[bot] in #963
• Bump rollup from 4.53.2 to 4.53.3 by @dependabot[bot] in #959
• Bump vite from 7.1.11 to 7.3.0 by @dependabot[bot] in #982
• Bump @typescript-eslint/eslint-plugin from 8.48.0 to 8.49.0 by @dependabot[bot] in #985
• Bump prettier from 3.6.2 to 3.7.4 by @dependabot[bot] in #984
• Bump @types/node from 24.10.4 to 25.0.2 in /javascript/packages/tailwind-class-sorter by @dependabot[bot] in #979
• Bump rimraf from 6.1.0 to 6.1.2 by @dependabot[bot] in #983

New Contributors

• @kudoas made their first contribution in #968

Commits

Full Changelog: v0.8.4...v0.8.5

Formatter

• Disable formatter in default config by @marcoroth in #944
• Keep herb:disable on same line as tag-opening by @marcoroth in #946

Linter

• Resolve custom rules from project root by @marcoroth in #945

Language Server

• Add Unnecessary diagnostic for <% case %> children by @marcoroth in #802

Engine

• Add more tests for left and right ERB Trimming by @marcoroth in #650
• Avoid applying debug spans inside javascript_tag blocks by @kozy4324 in #953

libherb

• C: Deprecate hb_array_size by @timkaechele in #885

Documentation

• Clean up references to old settings/configs by @marcoroth in #943

Dependencies

• Bump mdast-util-to-hast from 13.2.0 to 13.2.1 in the npm_and_yarn group across 1 directory by @dependabot[bot] in #940
• Bump @jothepro/doxygen-awesome-css from v2.3.4 to v2.4.1 by @dependabot[bot] in #924
• Bump jws from 3.2.2 to 3.2.3 in the npm_and_yarn group across 1 directory by @dependabot[bot] in #949

New Contributors

• @kozy4324 made their first contribution in #953

Commits

Full Changelog: v0.8.3...v0.8.4

Parser

• Re-parse on unexpected ";" error for more accurate errors by @marcoroth in #902

Ruby

• Compile with -fvisibility=hidden flag by @timkaechele in #906

Engine

• Fix incomplete Hash handling in error_formatter by @christos in #915

libherb

• Compile with -fvisibility=hidden flag by @timkaechele in #906
• Add HERB_EXPORTED_FUNCTION macro for symbol visibility control by @marcoroth in #933

Dependencies

New Contributors

• @christos made their first contribution in #915

Commits

Full Changelog: v0.8.2...v0.8.3

Formatter

• Improve element and blank line spacing by @marcoroth in #886
• Respect Outlook Conditional HTML Comments by @marcoroth in #887
• Respect maxLineLength for inline elements with ERB by @marcoroth in #889
• Fix support for Tailwind V4 projects by @marcoroth in #892
• Improve Formatter Performance on large documents by @marcoroth in #895
• Add <%# herb:formatter ignore %> directives by @marcoroth in #891

Linter

• Add <%# herb:linter ignore %> directives by @marcoroth in #891

Playground

• Deploy Previews for Pull Requests by @marcoroth in #890

Internal

• Setup Automated publishing for JavaScript and Rust and rework Ruby by @marcoroth in #888

libherb

• Use hb_array_first and hb_array_last consistently by @timkaechele in #884
• Add hb_buffer_init_arena for allocating a buffer using the arena allocator by @timkaechele in #862

Commits

Full Changelog: v0.8.1...v0.8.2

Parser

• Fix nested control structures in case/else clauses by @marcoroth in #869
• Use location-based detection for ERB control types by @marcoroth in #871

Formatter

• Fix whitespace preservation around ERB tags and punctuation by @marcoroth in #864

Linter

• Linter Rule: Don't flag meta[itemprop] for html-head-only-elements by @marcoroth in #867

libherb

• C: Remove unused hb_buffer_free function by @timkaechele in #863
• C: Prevent excessive copying in match_tags_in_node_array function by @timkaechele in #866

Rust

• Rust: Vendor C sources for cargo publish by @marcoroth in #861

Commits

Full Changelog: v0.8.0...v0.8.1

Herb v0.8

Check out the "What's new in Herb v0.8" post on the Herb Blog.

New Packages

• Introduce @herb-tools/config and .herb.yml configuration file by @marcoroth in #747
• Introduce @herb-tools/rewriter package by @marcoroth in #759
• Add Herb Java JNI Bindings by @marcoroth in #766
• Add Herb Rust FFI Bindings by @marcoroth in #767

Core

• Add didyoumean and levenshtein utils by @marcoroth in #734
• Add short-hand to construct Location, Position, and Range by @marcoroth in #731
• Introduce HERB_FILES_GLOB to share HTML+ERB glob by @marcoroth in #672
• Update all HTML+ERB globs to include Action View Variants by @marcoroth in #620

Parser

• Allow TOKEN_BACKSLASH in HTML Text Content by @marcoroth in #637
• Don't output unexpected_token_close_context for <% if %> by @marcoroth in #824
• Fix exponential recursion in two-pass HTML tag matching by @marcoroth in #840
• Handle memory leak in herb_parse by @marcoroth in #691
• Handle Memory Leaks in analyze.c by @marcoroth in #698
• Improve extract.c to strip <% # comments %> with space by @marcoroth in #825
• Introduce two-pass algorithm for matching HTML Elements by @marcoroth in #795
• Unskip tests that the parser supports now by @marcoroth in #723
• Bump Prism to v1.5.2 by @marcoroth in #603
• Bump Prism to v1.6.0 by @marcoroth in #669

Engine

• Add helpers to compare compiled/rendered outputs of the Engine by @marcoroth in #774
• Add support for customizing escape functions by @marcoroth in #720
• Add Support for ERB trimming by @marcoroth in #841
• Don't compile <% # comments %> by @marcoroth in #826
• Don't use send for add_postamble calls by @marcoroth in #721
• Fix compiling case/in nodes in HTML+ERB templates by @marcoroth in #596
• Migrate Engine Tests to assert_compiled_snapshot by @marcoroth in #722
• Support <% =begin%> block comments with no space by @marcoroth in #712

Formatter

• Better respect and deal with whitespace and adjacent text by @marcoroth in #612
• Extract and refactor Format Helper Functions and Constants by @marcoroth in #597
• Fix Bug where case children were lost by @marcoroth in #756
• Fix formatting <% else %> in inline mode by @marcoroth in #809
• Fix punctuation splitting and content duplication issues by @marcoroth in #591
• Improve tailwind-class-sorter rewriter experience by @marcoroth in #848
• Improve text content formatting and whitespace preservation by @marcoroth in #823
• Improve whitespace formatting on the root-level by @marcoroth in #763
• Integrate tailwind-css-sorter rewriter by @marcoroth in #761
• Preserve Frontmatter when formatting documents by @marcoroth in #797
• Skip formatting Scaffold Templates by @marcoroth in #771
• Try to persist <%# herb:disable %> nodes when formatting by @marcoroth in #762
• Allow Linter and Formatter CLIs to accept multiple inputs by @marcoroth in #807

Linter

• Add support for defining custom Linter rules by @marcoroth in #600
• Add test helpers to simplify linter rule tests by @marcoroth in #587
• Allow disabling offenses using <%# herb:disable %> by @domingo2000 in #531
• Allow multiple rules to be ignored using <%# herb:disable %> by @domingo2000 in #680
• Don't lint files with parser errors by @marcoroth in #614
• Exclude Action Mailer views for html-no-self-closing by @marcoroth in #765
• Fix html-no-empty-attributes with top-level control flow by @marcoroth in #796
• Fix crash in html-no-underscores-in-attribute-names rule by @marcoroth in #602
• Fix false positive in erb-right-trim when using <%- by @marcoroth in #629
• Remove html-no-space-in-tag from default rules for now by @marcoroth in #697
• Rename erb-require-trailing-newline linter rule by @marcoroth in #660
• Support auto-fixing linter offenses using --fix by @marcoroth in #622
• Allow Linter and Formatter CLIs to accept multiple inputs by @marcoroth in #807

Linter Rules

New Rules

• Implement erb-no-case-node-children linter rule by @marcoroth in #598
• Implement erb-no-extra-newline linter rule by @domingo2000 in #557
• Implement erb-no-extra-whitespace-inside-tags linter rule by @marcoroth in #764
• Implement html-body-only-elements linter rule by @nicogaldamez in #470
• Implement html-head-only-elements linter rule by @marcoroth in #382
• Implement html-input-require-autocomplete linter rule by @domingo2000 in #565
• Implement html-no-duplicate-meta-names linter rule by @marcoroth in #383
• Implement html-no-space-in-html-tag linter rule by @domingo2000 in #559
• Implement herb-disable-comment-* family of linter rules by @marcoroth in #735

Other Updates

• Allow head-only elements on top level by @marcoroth in #641
• Fix false positive for yield in erb-right-trim rule by @marcoroth in #644
• Implement --ignore-disable-comments CLI option by @marcoroth in #736
• Remove Trimming with -%> on non-output offense by @marcoroth in #645

Autofixes

• Implement Aufofix for erb-comment-syntax rule by @marcoroth in #775
• Implement Autofix for erb-right-trim linter rule by @marcoroth in #630
• Implement Autofix for html-no-space-in-tag linter rule by @marcoroth in #642

Language Server

• Herb Linter Fix-on-save by @marcoroth in #758
• Implement Disable Linter Rule Code Actions by @marcoroth in #739

Dev Tools

• Allow to select editor from dropdown by @marcoroth in #715

Playground

• Add Herb Linter Autofix Button by @marcoroth in #627
• Ensure track_whitespace parser option persists by @marcoroth in #713
• Improve Buttons/Tabs Layout on smaller screens by @marcoroth in #846

Rewriter

• Implement tailwind-class-sorter built-in rewriter by @marcoroth in #760
• Change rewrite/rewriteString to be synchronous by @marcoroth in #787
• Expose rewrite/rewriteString functions and refine types by @marcoroth in #786

Ruby

• Run compile for all files in analyze command by @marcoroth in #621
• Add colored CLI output for the parse and lex commnads by @marcoroth in #776
• Add metadata and input to Ruby test snapshots by @marcoroth in #785
• Drop rbs-inline fork since it's now fixed upstream by @marcoroth in #757
• Introduce depth_limit for Node#tree_inspect by @marcoroth in #839
• Print Parse Errors at the end of the parse output by @marcoroth in #784
• Remove libherb FFI Ruby Interface by @timkaechele in #751

Rust

• Add Herb Rust FFI Binding...

Added

• Lexer: Support lexing and parsing =%> ERB closing tag by @marcoroth in #568
• Engine: Support Ruby Block Comments when compiling templates by @marcoroth in #576

New Linter Rules

• Linter: Implement erb-comment-syntax linter rule by @domingo2000 in #528
• Linter: Implement erb-right-trim linter rule by @domingo2000 in #556

Changed

• Dev Tools: Add Rubymine to list of Editors by @equivalent in #538
• C: Implement more efficient buffer resizing by @timkaechele in #539
• C: Localize token struct members by @timkaechele in #529
• Linter: Add test case for trailing boolean attribute in HTML element by @dzunk in #485
• Linter: Add visitNode and visitERBNode methods to improve erb-right-trim by @marcoroth in #569
• Linter: Refactor erb-require-whitespace-inside-tags to use visitERBNode by @marcoroth in #570

Fixed

• Parser: Fix parsing boolean attributes with track_whitespace by @marcoroth in #560
• Parser: Fix analysis of nested case/when and case/in parsing by @marcoroth in #578
• Parser: Analyze case statements with yield as ERBCaseNode by @marcoroth in #577
• Linter: fix rule generator template by @domingo2000 in #563
• Linter: Fix --version flag for CLI by @drewhoffer in #488
• Formatter: Print Experimental Preview warning on stderr by @marcoroth in #575

Documentation

• docs: Fix link for html-no-self-closing rule in README by @koddsson in #535

Dependencies

• Bump tar-fs from 2.1.3 to 2.1.4 in the npm_and_yarn group across 1 directory by @dependabot[bot] in #536

New Contributors

• @equivalent made their first contribution in #538
• @domingo2000 made their first contribution in #528
• @dzunk made their first contribution in #485

Commits

Full Changelog: v0.7.4...v0.7.5

Changed

• Release herb gem via trusted publishing by @mensfeld in #532

Fixed

• Engine: Add missing newline when compiling <% # comment %> by @marcoroth in #530
• Parser: Namespace Parser C functions by @indirect in #534

New Contributors

• @indirect made their first contribution in #534
• @mensfeld made their first contribution in #532

Commits

Full Changelog: v0.7.3...v0.7.4

Changed

• Parser: Analyze parse errors as partial_script by @Earlopain in #503
• Rubygem: Add missing files and vendor Prism to allow compiling gem from source by @marcoroth in #515
• Parser: Don't treat guard clauses as ERBIfNode or ERBUnlessNode by @marcoroth in #517
• Linter: Allow empty data attributes with no value by @marcoroth in #518

Fixed

• Parser: Add TOKEN_BACKTICK to list of text content tokens by @koddsson in #468
• Parser: Fix typo in pretty_print_analyzed_ruby method by @timkaechele in #512
• Formatter: Fix attribute spacing in content-preserving elements by @marcoroth in #522
• Formatter: Add spaces in ERBContentNode within HTML attributes by @marcoroth in #523

Documentation

• Update README.md by @samuelpecher in #508

Dependencies

• Bump the npm_and_yarn group across 1 directory with 2 updates by @dependabot[bot] in #516
• Bump vite from 7.0.7 to 7.1.5 in the npm_and_yarn group across 1 directory by @dependabot[bot] in #519
• Bump vite from 7.1.5 to 7.1.6 in the npm_and_yarn group across 1 directory by @dependabot[bot] in #520
• Bump vite from 7.1.6 to 7.1.7 in the npm_and_yarn group across 1 directory by @dependabot[bot] in #521

New Contributors

• @samuelpecher made their first contribution in #508
• @timkaechele made their first contribution in #512
• @koddsson made their first contribution in #468

Commits

Full Changelog: v0.7.2...v0.7.3

Added

• Formatter: Add --indent-width and --max-line-length args to the CLI by @LucasKuhn in #466
• Engine: Add visitors for modifying AST before compiling by @marcoroth in #502

Changed

• Add Cursor as available editor to link source files by @JuanMiguelGM in #486
• Add Zed as available editor to link source files by @marcoroth in bfd36c7

Fixed

• Use rb_utf8_str_new_cstr() in Ruby C-Extension by @marcoroth in #500
• Remove double HTML-escaping from error template by @coorasse in #487
• Parser: Fix <div foo=>bar</div> skipping over the closing bracket from the opening div by @Earlopain in #501

New Contributors

• @coorasse made their first contribution in #487
• @LucasKuhn made their first contribution in #466
• @JuanMiguelGM made their first contribution in #486
• @Earlopain made their first contribution in #501

Commits

Full Changelog: v0.7.1...v0.7.2