mayChangeCwdOrGit function

bool mayChangeCwdOrGit(String line)

Whether line could change the working directory or git state, and thus warrants a prompt refresh (the marker).

Returns false only for a single simple command (no shell operators, not a cd) whose program is a known read-only command — including read-only git subcommands. Everything else is treated as state-changing.

Implementation

bool mayChangeCwdOrGit(String line) {
  final lineTrimmed = line.trim();
  if (lineTrimmed.isEmpty) return false;

  final tokens = _significantTokens(line, lineTrimmed);
  if (tokens.isEmpty) return false; // empty line changes nothing.
  if (_shellOperators.hasMatch(line)) return true;

  final program = _basename(tokens.first);
  if (program == 'cd') return true;
  if (program == 'git') {
    final sub = _firstGitSubcommand(tokens.skip(1));
    if (sub == 'config') {
      // `git config --get …` is read-only; a bare/setting form may change state.
      return !tokens.contains('--get') &&
          !tokens.contains('--list') &&
          !tokens.contains('-l');
    }
    return !_readOnlyGit.contains(sub);
  }
  return !_readOnly.contains(program);
}