Jamkris 04dc03c3af feat(lib): add extractSubshellGroups for plain (...) subshells ...

`extractCommandSubstitutions` only walks `$(...)` and backticks — the two
shell constructs whose bodies are captured as strings. Bash also has
plain `(...)` subshells (e.g. `(npm run dev)`), where the body executes
in a child shell but is not value-captured. Our PreToolUse hooks need
to peer inside those too, because a `(...)` group bypasses the
top-level segment splitter just like `$(...)` does.

This commit adds a sibling extractor with the same conventions as
`extractCommandSubstitutions`:

- single quotes literal — `'(npm run dev)'` is a string, ignored
- double quotes literal for parens — `"(npm run dev)"` is a string
  (bash only honors `$(...)`, not bare `(...)`, inside double quotes)
- skips `$(...)` and backtick spans so we don't double-extract
  bodies the other helper already handles
- recurses into its own bodies for nested groups

No consumer yet; the next commit wires both extractors into
`scripts/hooks/pre-bash-dev-server-block.js` to close the subshell
bypass surface.

2026-05-14 11:17:46 +09:00

5.2 KiB

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