Module matchers 

Built-in matchers (DESIGN.md §5.11.3).

Three shipped:

• PrefixMatcher – query is a prefix of the candidate text. Case-insensitive when ctx.case_sensitive is false (the default for cmdline use).
• SubstringMatcher – query appears anywhere in the candidate text.
• FuzzyMatcher – subsequence match (each char of the query appears in order in the candidate, possibly with skips). Score decays with the number of skipped chars; match_ranges records exactly which bytes the matcher consumed (so the renderer can paint them).

Structs

FuzzyDisplayMatcher

match:fuzzy-display. Same 5-tier algorithm as FuzzyMatcher but matches against candidate.display instead of candidate.text.

FuzzyMatcher

match:fuzzy. Five-tier scoring (Exact → Prefix → Word- boundary subsequence → Substring → Fuzzy-subsequence with skip-decay).

OrderlessDisplayMatcher

match:orderless-display. FuzzyDisplayMatcher with the query read as a set of whitespace-separated components rather than one token — see crate::orderless for the syntax and scoring.

PrefixMatcher

match:prefix. Default v1 matcher.

SubstringMatcher

match:substring. Returns lower score than prefix.