feat: suggest closest command on unknown subcommand
Author: margaretjguCreated Sep 14, 2026Updated Sep 17, 2026
Labelsenhancement
Unknown subcommands print unknown command: foo and stop (src/factory-core.ts defineGroup). On a generated tree (100+ KB namespaces, long ES names) that is the usual human and agent miss.
On unknown command, suggest the closest registered sibling (Levenshtein or commander's built-in). Cap at 3 suggestions. Same for unknown flags if cheap.
Acceptance: elastic stack es indice (missing s) suggests indices. Test the misspelling. No suggestion when distance is large.
Source: elastic/cli