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fix: unknown single-word subcommand emits command_not_found instead of missing_credentials (#825)

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When looks_like_subcommand_typo fires on a single word with no close
fuzzy matches, the fallthrough reached CliAction::Prompt → provider
startup → misleading missing_credentials error.

Fix: always return Err with command_not_found: prefix from the typo
guard (with or without suggestions). Added command_not_found classifier
arm in classify_error_kind. Unified existing unknown_subcommand kind
under command_not_found in #825.

Three new regression tests in output_format_contract.rs:
- unknown_subcommand_json_emits_command_not_found
- unknown_subcommand_text_emits_command_not_found_on_stderr
- unknown_subcommand_typo_with_suggestions_json_emits_command_not_found

Updated pre-existing unit test assertion (starts_with → contains) and
classifier unit test (unknown_subcommand → command_not_found).

572 tests pass, 1 pre-existing worker_boot failure unrelated.
This commit is contained in:
YeonGyu-Kim
2026-05-29 14:37:29 +09:00
committed by GitHub
parent de7edd5bb1
commit 70d64be033
3 changed files with 102 additions and 13 deletions
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@@ -7870,3 +7870,9 @@ Original filing (2026-04-18): the session emitted `SessionStart hook (completed)
**Required fix shape.** Add a global `SUPPRESS_CONFIG_WARNINGS_STDERR: AtomicBool` flag in `config.rs`. Set it to `true` immediately when `--output-format json` is detected in `main.rs` (before any settings load). Gate `emit_config_warning_once` on that flag. Text-mode invocations continue to print to stderr; JSON-mode invocations silently suppress the prose warning (warnings remain available via structured `config` output).
**Acceptance.** With deprecated `enabledPlugins` in `~/.claw/settings.json`, all JSON-mode surfaces (`status`, `sandbox`, `system-prompt`, `mcp list`, `skills list`, `agents list`, plus all `--resume /config*` forms) exit with empty stderr. Text-mode output is unchanged. [SCOPE: claw-code]
825. **Unknown single-word subcommand falls through to provider startup and surfaces `missing_credentials` instead of `command_not_found`** — dogfooded 2026-05-29 14:00 on `main` `de7edd5b`. `claw foobar` (and `claw --output-format json foobar`) hit the `looks_like_subcommand_typo` guard, which checked for close fuzzy matches but fell through silently when no suggestions matched. The fallthrough routed to `CliAction::Prompt`, triggering Anthropic provider startup and a misleading `missing_credentials` error (or burning API tokens if credentials were present). The `command_not_found` error kind existed in the registry but was never emitted by this path.
**Required fix shape.** When `looks_like_subcommand_typo` fires on a single-word positional arg with no close suggestions, emit `command_not_found:` rather than falling through. Add `command_not_found:` prefix classifier to `classify_error_kind`. Result: clean `{"error_kind":"command_not_found",...}` envelope on stdout (JSON mode), error on stderr (text mode), zero provider startup.
**Acceptance.** `claw --output-format json foobar` exits 1, stdout `error_kind:"command_not_found"`, stderr empty, no Anthropic call. Typo with suggestions (`claw statuz`) also gets `command_not_found` plus `hint` with suggestions. [SCOPE: claw-code]