fiedler-itlabs d293941643
fix(hooks): stop pre/post Bash dispatcher from echoing the input event (#2240)
runHooks() returned the unmodified raw stdin (the PreToolUse/PostToolUse
input event) on stdout whenever no sub-hook produced additionalContext.
Claude Code parses a hook's stdout as JSON and validates it against the
hook-output schema, so echoing the input object
({session_id, hook_event_name, tool_name, tool_input, ...}) fails with
"Hook JSON output validation failed — (root): Invalid input" on nearly
every Bash command.

Track whether a sub-hook deliberately set stdout (string / {stdout}, e.g.
GateGuard) via a rawModified flag and emit '' in the pass-through case
instead of the echoed input. Preserves GateGuard pass-through and
block-no-verify's exit-2 blocking.

Update the three dispatcher tests that codified the buggy echo behavior to
expect empty stdout, and add a regression test for a plain pass-through
command.

Fixes #2239

Co-authored-by: WOZCODE <contact@withwoz.com>
2026-06-15 13:48:46 -04:00
..