Function skipEnvFlags

src/tools/BashTool/pathValidation.ts:1244–1256

* Parse env's VAR=val and safe flags (-i/-0/-v/-u NAME). Returns argv index * of wrapped COMMAND, or -1 if unparseable/no wrapped cmd. Rejects -S (argv * splitter), -C/-P (altwd/altpath). Mirrors checkSemantics (ast.ts).

(a: readonly string[])

 * splitter), -C/-P (altwd/altpath). Mirrors checkSemantics (ast.ts).
 */
function skipEnvFlags(a: readonly string[]): number {
  let i = 1
  while (i < a.length) {
    const arg = a[i]!
    if (arg.includes('=') && !arg.startsWith('-')) i++
    else if (arg === '-i' || arg === '-0' || arg === '-v') i++
    else if (arg === '-u' && a[i + 1]) i += 2
    else if (arg.startsWith('-'))
      return -1 // -S/-C/-P/unknown: fail closed
    else break
  }
  return i < a.length ? i : -1
}

/**
 * Argv-level counterpart to stripSafeWrappers (bashPermissions.ts). Strips