pub fn describe_keyword_at(source: &str, offset: usize) -> Option<&'static str>Expand description
v0.121 (ADR 0156): the reserved-keyword doc for the token at offset in
source, if the cursor sits on one — matched by source text against
bynk_syntax::keywords::KEYWORDS, independent of the token’s TokenKind
(unlike the identifier-only lexical hover fallback above). This is hover’s
floor for the mechanical coverage test: every lowercase-initial keyword
gets at least this, even where describe_symbol has no richer path for it
(e.g. the testing-track clause keywords — requires/ensures/suite/…).