The highlights library finds comments before it knows the language and
pairs quotes and comment delimiters by ordinal; measured on 2026-09-03,
that greys out every Rust attribute, comments out the rest of a line at a
URL or a # inside a string, and opens a bogus string at an apostrophe.
Upstream's only fix since 1.1.0 is unreleased and covers just the
reversed range we already drop. The plan replaces it with one sequential
scanner and a table of languages, adding RON, TOML, fish and JSON, which
real transcripts use and the library never knew.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
