Issues

• Language metadata does not name the parser package a language ships in

  leandrocp/lumis#1747 · Filter by author leandrocp opened on Oct 10, 2026

• tree-sitter 0.27 truncates Wasm supertype maps, so csharp, haskell and perl queries fail to compile

  leandrocp/lumis#1738 · Filter by author leandrocp opened on Oct 8, 2026

• Highlighting reports the injected languages it could not load only through console.warn, once per process

  elixirenhancementjavascriptrust
  leandrocp/lumis#1731 · Filter by author leandrocp opened on Oct 7, 2026

• Automate Homebrew formula updates after CLI releases

  leandrocp/lumis#1706 · Filter by author leandrocp opened on Oct 5, 2026

• Conformance pins what a render returns at its time limit, not when it returns

  leandrocp/lumis#1701 · Filter by author leandrocp opened on Oct 5, 2026

• Italic can only be turned on or off for a whole theme, with different defaults per formatter

  elixirenhancementjavascriptrust
  leandrocp/lumis#1635 · Filter by author leandrocp opened on Sep 29, 2026

• No test loads an installed parser package through a bundler, so a host that misplaces the parser file goes unnoticed

  enhancementjavascript
  leandrocp/lumis#1624 · Filter by author leandrocp opened on Sep 29, 2026

• Every runnable JavaScript example pins a Lumis from before installed-only loading

  documentationjavascript
  leandrocp/lumis#1616 · Filter by author leandrocp opened on Sep 28, 2026

• loadLanguage() with an unknown id says it is "not registered in any bundle"

  enhancementjavascript
  leandrocp/lumis#1598 · Filter by author leandrocp opened on Sep 27, 2026

• availableThemes() identifies a theme by name, while availableLanguages() uses id and keeps name for display

  javascriptquestion
  leandrocp/lumis#1597 · Filter by author leandrocp opened on Sep 27, 2026

• highlightIter and the terminal formatter drop the enclosing style when a nested scope has none; HTML inherits it

  bugjavascriptrust
  leandrocp/lumis#1592 · Filter by author leandrocp opened on Sep 27, 2026

• render_lines_from_events returns HTML only, so a non-HTML per-line consumer rebuilds the line walk

  elixirenhancementjavascriptrust
  leandrocp/lumis#1573 · Filter by author leandrocp opened on Sep 27, 2026

• Integrations only highlight code blocks, never inline code

  enhancementjavascript
  leandrocp/lumis#1569 · Filter by author leandrocp opened on Sep 27, 2026

• A fence label decorated around a language name resolves to plain text, except by accident

  enhancementjavascriptrust
  leandrocp/lumis#1552 · Filter by author leandrocp opened on Sep 25, 2026

• Sixty languages hex.pm READMEs write fences in are not in the catalog

  enhancement
  leandrocp/lumis#1551 · Filter by author leandrocp opened on Sep 25, 2026

• Elixir has no flat highlight_iter

  elixirenhancement
  leandrocp/lumis#1550 · Filter by author leandrocp opened on Sep 25, 2026

• Pathological inputs cause cross-runtime latency, amplification, and host starvation

  bugelixirjavascriptrust
  leandrocp/lumis#1447 · Filter by author leandrocp opened on Sep 20, 2026

• Start line numbering somewhere other than 1

  elixirenhancementjavascriptrust
  leandrocp/lumis#1421 · Filter by author leandrocp opened on Sep 14, 2026

• No way to learn which injected languages a language reaches before highlighting

  enhancementjavascriptrust
  leandrocp/lumis#1408 · Filter by author leandrocp opened on Sep 13, 2026

• A formatter returns a writer, a string, or iodata depending on the runtime — is that worth aligning?

  elixirjavascriptquestionrust
  leandrocp/lumis#1383 · Filter by author leandrocp opened on Sep 9, 2026

• Support the ecosystem's code fence decorator dialects

  enhancementrust
  leandrocp/lumis#1372 · Filter by author leandrocp opened on Sep 8, 2026

• markdown-it-lumis and rehype-lumis ignore code fence decorators

  enhancementjavascript
  leandrocp/lumis#1371 · Filter by author leandrocp opened on Sep 8, 2026

• Parse code block decorators in the core, not once per integration

  enhancementrust
  leandrocp/lumis#1370 · Filter by author leandrocp opened on Sep 8, 2026

• Simplify theming

  enhancement
  leandrocp/lumis#1304 · Filter by author a3kov opened on Aug 21, 2026
  1

• [feature] LaTeX output

  enhancementrust
  leandrocp/lumis#1296 · Filter by author Freed-Wu opened on Aug 18, 2026
  2