Fixes six issues in the shared command resolver (Rust display.rs and
its TS mirror toolIcon.ts), all locked in by shared fixture cases:
- An unescaped newline now ends resolution like `;` does, instead of
being folded in as whitespace; a backslash-newline is a line
continuation, removed entirely rather than embedded or splitting
the word.
- Assignment recognition (`FOO=bar`) now requires the `=` to come from
plain, unquoted/unescaped source text. `"FOO=1"` and `FOO\=1` are
executable words named `FOO=1`, not assignments — quote removal was
losing that provenance.
- `command -v`/`-V` (lookup only, no execution), `env -S` (embeds a
command string) and `npx -c`/`--call` (same) no longer resolve
through to a program they don't actually run. Restricted bash
`time`'s options to `-p`, the only flag the keyword itself parses
(`-o` etc. belong to external GNU time) — this corrects a
previously-wrong fixture case.
- `env`, `sudo` and `command`'s options may now bundle (`env -iv`,
`sudo -nE`) or take an attached value (`sudo -uroot`), the way real
getopt-based tools do, with missing-operand forms safely rejected.
- pnpm/yarn `dlx` and `bun x`/`bunx` now consume their own trailing
options (`--package foo`/`--package=foo`, `--bun`) before the
executable, matching each tool's documented CLI syntax.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
command_program/command_tool whitespace-split and only skipped whole
wrapper words, so quoted paths broke, sudo -u/env -i/nohup/time/npx
--yes/pnpm|yarn --silent dlx/bun x were rejected, and pnpm claude /
yarn claude (a package.json script, not `dlx claude`) resolved as a
Claude launch. Replace it with a tokenizer that honours quoting and
escaping without evaluating any expansion, and per-wrapper option
tables (env, sudo, command, nohup, time, npx, pnpm, yarn, bun) that
require dlx/x before looking through a package-manager wrapper.
Ambiguous shell grammar (pipelines, list operators, redirections,
substitution, unterminated quotes) is rejected outright rather than
guessed through; command_program still degrades to the naive first
word for display, but command_tool returns None.
Mirror the same resolver in web/src/toolIcon.ts and add
fixtures/command-resolution.json as a parity fixture both test
suites assert against.
