pub fn compute_code_block_lines(syntax: &SyntaxSnapshot) -> Option<Vec<u32>>Expand description
MC.2: the source lines that lie inside a fenced (or indented) code block,
for the full-width syntax.code_block background tint (markdown and any
grammar exposing those node kinds).
Mirrors compute_syntax_folds: it runs the language’s fold query — the one
registered query that already captures fenced_code_block /
indented_code_block — and keeps only the code-block captures, expanding
each to the individual source lines it covers. A grammar whose fold query
captures no code block (every language but markdown today) yields an empty
set, so no tint. Runs on the actor thread off the paint path, exactly like
the fold recompute it rides beside.
Returned lines are sorted and de-duplicated (a BTreeSet collapses the
overlap tree-sitter can report for the same range under multiple patterns).