Crate lattice_completion 

Pluggable completion pipeline (DESIGN.md §5.11.3).

Powers :-line completion and (eventually) any minibuffer-shaped prompt the editor surfaces. Architecturally vertico-shaped: generators, matchers, rankers, annotators are independent pluggable stages registered against a CompletionRegistry. Plugin authors target the public traits to extend any stage.

• Generators (CandidateGenerator) produce raw candidates.
• The matcher (CandidateMatcher) filters + scores them against a query.
• The ranker (CandidateRanker) reorders the matched set.
• Annotators (CandidateAnnotator) add display metadata.

The host (the editor crate, not this one) wires the pipeline into the cmdline and the renderer. This crate stays pure-traits + types + reusable built-ins; tests run without any UI dependency.

Source provenance for every registered stage is captured via #[track_caller] (DESIGN.md §5.11.1) so :describe-completion-source <name> resolves to the registration site.

Re-exports

pub use crate::builtins::annotators::DocSnippetAnnotator;

pub use crate::builtins::annotators::KeybindingAnnotator;

pub use crate::builtins::annotators::KeybindingSource;

pub use crate::builtins::annotators::KeymapReverseLookup;

pub use crate::builtins::annotators::KindLabelAnnotator;

pub use crate::builtins::matchers::FuzzyDisplayMatcher;

pub use crate::builtins::matchers::FuzzyMatcher;

pub use crate::builtins::matchers::OrderlessDisplayMatcher;

pub use crate::builtins::matchers::PrefixMatcher;

pub use crate::builtins::matchers::SubstringMatcher;

pub use crate::builtins::rankers::AlphabeticalRanker;

pub use crate::builtins::rankers::MruRanker;

pub use crate::builtins::rankers::ScoreRanker;

pub use crate::builtins::CompletionBuiltins;

pub use crate::builtins::populate;

pub use crate::cache::GeneratorCache;

pub use crate::candidate::Annotation;

pub use crate::candidate::AnnotationColumns;

pub use crate::candidate::AnnotationSegment;

pub use crate::candidate::CacheKey;

pub use crate::candidate::CandidateData;

pub use crate::candidate::CandidateKind;

pub use crate::candidate::DisplaySpan;

pub use crate::candidate::MatchScore;

pub use crate::candidate::RawCandidate;

pub use crate::candidate::RenderedCandidate;

pub use crate::candidate::ScoredCandidate;

pub use crate::insert::BufferWordsSource;

pub use crate::insert::CompletionTrigger;

pub use crate::insert::DocPopupState;

pub use crate::insert::FuzzyInsertMatcher;

pub use crate::insert::InsertCompletionState;

pub use crate::insert::InsertContext;

pub use crate::insert::InsertRanker;

pub use crate::insert::InsertSource;

pub use crate::insert::LSP_COMPLETION_SOURCE_ID;

pub use crate::insert::PATH_SOURCE_ID;

pub use crate::insert::PerLanguageOverrides;

pub use crate::insert::SNIPPET_SOURCE_ID;

pub use crate::insert::SourceId;

pub use crate::insert::TREE_SITTER_SYMBOL_SOURCE_ID;

pub use crate::insert::canonical_source_id;

pub use crate::insert::fuzzy_match;

pub use crate::insert::per_language_defaults;

pub use crate::orderless::ORDER_BONUS;

pub use crate::orderless::OrderlessComponent;

pub use crate::orderless::orderless_match;

pub use crate::orderless::parse_orderless_query;

pub use crate::path::PathCompletionSource;

pub use crate::pipeline::CompletionPipeline;

pub use crate::registry::AnnotatorId;

pub use crate::registry::CompletionRegistry;

pub use crate::registry::GeneratorId;

pub use crate::registry::MatcherId;

pub use crate::registry::RankerId;

pub use crate::registry::RegisteredAnnotator;

pub use crate::registry::RegisteredGenerator;

pub use crate::registry::RegisteredMatcher;

pub use crate::registry::RegisteredRanker;

pub use crate::slot::CommandLineSlot;

pub use crate::slot::current_slot;

pub use crate::source::AsyncCompletionOutcome;

pub use crate::source::AsyncCompletionSource;

pub use crate::source::CandidateSink;

pub use crate::source::CompletionSourceContribution;

pub use crate::source::CompletionSourceKind;

pub use crate::source::InsertContextSnapshot;

pub use crate::source::SyncCompletionSource;

pub use crate::source::line_before_cursor;

pub use crate::source_registration::AcceptAction;

pub use crate::source_registration::AcceptHandler;

pub use crate::source_registration::AcceptToken;

pub use crate::source_registration::ArgsSchema;

pub use crate::source_registration::CandidateSourceKind;

pub use crate::source_registration::CustomAcceptPayload;

pub use crate::source_registration::DefaultAcceptHandler;

pub use crate::source_registration::SourceRegistration;

pub use crate::source_registration::SourceSpec;

pub use crate::traits::CandidateAnnotator;

pub use crate::traits::CandidateGenerator;

pub use crate::traits::CandidateMatcher;

pub use crate::traits::CandidateRanker;

pub use crate::traits::GenerateContext;

Modules

builtins

Built-in pluggable stage implementations shipped with the editor. Plugin-defined alternatives register through the same crate::CompletionRegistry and replace these defaults via default_matcher / default_ranker / default_annotators.

cache

Cache for generator output (DESIGN.md §5.11.3, Q13).

candidate

Candidate value types that flow through the completion pipeline (DESIGN.md §5.11.3).

insert

Insert-mode completion – the editor surface that turns the existing pipeline (cmdline today) into a buffer-level input flow.

orderless

Orderless matching — a query is a set of independent components, not one string.

path

Path-completion source (CSM.7).

pipeline

CompletionPipeline::run – the executor that walks generators -> matcher -> ranker -> annotators and produces the list the popup renders.

registry

Where pluggable completion stages register themselves.

slot

Command-line slot detection (DESIGN.md §5.11.3).

source

Mode-driven completion sources (insert-completion.md §12).

source_registration

Unified source registration — slice 3c.unify.picker-generator-trait-unify (7a).

traits

The four pluggable traits the pipeline composes.