Function parseTestNegatablePrimary

src/utils/bash/bashParser.ts:3787–3815

* Parse `!`-negated or test-operator (`-f`) or parenthesized primary — but NOT * a binary comparison. Used as LHS of binary_expression so `! x =~ y` binds * `!` to `x` only, not the whole `x =~ y`.

(
  P: ParseState,
  closer: string,
)

 * `!` to `x` only, not the whole `x =~ y`.
 */
function parseTestNegatablePrimary(
  P: ParseState,
  closer: string,
): TsNode | null {
  skipBlanks(P.L)
  const c = peek(P.L)
  if (c === '!') {
    const s = P.L.b
    advance(P.L)
    const bang = mk(P, '!', s, P.L.b, [])
    const inner = parseTestNegatablePrimary(P, closer)
    if (!inner) return bang
    return mk(P, 'unary_expression', bang.startIndex, inner.endIndex, [
      bang,
      inner,
    ])
  }
  if (c === '-' && isIdentStart(peek(P.L, 1))) {
    const s = P.L.b
    advance(P.L)
    while (isIdentChar(peek(P.L))) advance(P.L)
    const op = mk(P, 'test_operator', s, P.L.b, [])
    skipBlanks(P.L)
    const arg = parseTestPrimary(P, closer)
    if (!arg) return op
    return mk(P, 'unary_expression', op.startIndex, arg.endIndex, [op, arg])
  }
  return parseTestPrimary(P, closer)
}

function parseTestBinary(P: ParseState, closer: string): TsNode | null {
  skipBlanks(P.L)