New thefuck/compose.py resolve() iterates the auto-run sources
(learned-db exact, error-suggestion, history, path guess, help) per
round on the previous round's script until stable, a revisit aborts
or no source has a safe candidate; dangerous candidates are declined
mid-round and consultation continues. Output-aware sources get a
synthesized Command wrapping the round's script with the original
failure's output. Zero accepted steps return None so the original
failing script is never auto-executed; no round cap (termination
contract: visited-set + fixed-range/word-count-preserving sources,
stated in the module docstring; a compose-local memo acts only as a
determinism tripwire).
fix_command runs the inline chain through the composer; under
settings.repeat or a non-nushell shell it records immediately before
the run unless the only step replayed a learned-db exact hit; under
nushell it closes the learned db first and records on returncode 0,
forgets on failure (poison self-heal; CorrectedCommand.run now
stashes the nu returncode on the instance).
learned.forget(original, corrected) is the exact inverse of record
(cmd: + matching-count word:/part: deletes, assembly failures are a
documented no-op); learned.close_db is idempotent and atexit now
registers the stable close_db method exactly once across
close/reopen cycles.
Test migration (authorized): test_fix_command_learned.py rebased to
composer semantics (per-round consultation incl. error-suggestion;
input-aware fakes so round 2 declines, preserving the recordings==[]
pin in test_exact_learned_wins_over_guess).
Alexander