AbstractSearchStrategy.IsMatch runs for every metadata row of every
loaded module on each keystroke, yet it re-stripped the operator prefix
per name and, for fuzzy terms, additionally lowercased both the name
and the term - the largest allocation source in interactive search.
The terms are invariant for the lifetime of a strategy (each keystroke
builds a new request and strategy), so the stripping and lowercasing
now happen once in the constructor, and the noncontiguous matcher
compares spans with per-char ToLowerInvariant. This switches fuzzy
matching from culture-sensitive to invariant lowercasing, which is the
appropriate semantic for matching metadata names.
The new IsMatchTests pin the +, -, =, ~ operator semantics (including
the pre-existing quirk that =Name compares against the backtick-
suffixed name of generic types) as observed before the change.
Assisted-by: Claude:claude-fable-5:Claude Code
Christoph Wille
964ffc72ca