add keymap multi-chord sequences and a stateful matcher

T-205, the resolver foundation for Vim motions (dd, gg, dw, ciw) and
repeat counts (5j). KeymapBinding now holds an ordered chord sequence
(length 1 for the common single-chord case); `keys:` parses a space-
separated spec into that sequence (D-82). Keymap.resolve keeps the
single-chord fast path; a new stateless Keymap.match answers
exact/prefix/none for a pending buffer.

SequenceMatcher wraps that query with a pending buffer, a repeat-count
prefix (leading digits, 0 excluded since it's the line-start motion),
the d-vs-dd timeout case (flush fires the buffered exact), and broken-
sequence recovery (discard, restart on the last chord). It is headless —
no keyboard reads, no event swallowing — so the editor (T-206) can drive
it from Focus.onKeyEvent and act on the result.

Also drops a stray unused import in the Vim indicator test.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

This commit is contained in:

jpmschweitzer

2026-06-01 21:11:59 +02:00

co-authored by

Claude Opus 4.8

parent ff85e12895

commit ba304a95e6

7 changed files with 425 additions and 9 deletions

									
										lib/kernel/kernel.dart
									
		+1
		
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				@@ -26,6 +26,7 @@ export 'src/keymap/intents.dart';

				export 'src/keymap/key_chord.dart';

				export 'src/keymap/keymap.dart';

				export 'src/keymap/keymap_service.dart';

				export 'src/keymap/sequence_matcher.dart';

				export 'src/keymap/when_clause.dart';

				export 'src/dialog.dart';

				export 'src/extensions_manager.dart';