Function isSilentBashCommand

src/tools/BashTool/BashTool.tsx:178–217

* Checks if a bash command is expected to produce no stdout on success. * Used to show "Done" instead of "(No output)" in the UI.

(command: string)

 * Used to show "Done" instead of "(No output)" in the UI.
 */
function isSilentBashCommand(command: string): boolean {
  let partsWithOperators: string[];
  try {
    partsWithOperators = splitCommandWithOperators(command);
  } catch {
    return false;
  }
  if (partsWithOperators.length === 0) {
    return false;
  }
  let hasNonFallbackCommand = false;
  let lastOperator: string | null = null;
  let skipNextAsRedirectTarget = false;
  for (const part of partsWithOperators) {
    if (skipNextAsRedirectTarget) {
      skipNextAsRedirectTarget = false;
      continue;
    }
    if (part === '>' || part === '>>' || part === '>&') {
      skipNextAsRedirectTarget = true;
      continue;
    }
    if (part === '||' || part === '&&' || part === '|' || part === ';') {
      lastOperator = part;
      continue;
    }
    const baseCommand = part.trim().split(/\s+/)[0];
    if (!baseCommand) {
      continue;
    }
    if (lastOperator === '||' && BASH_SEMANTIC_NEUTRAL_COMMANDS.has(baseCommand)) {
      continue;
    }
    hasNonFallbackCommand = true;
    if (!BASH_SILENT_COMMANDS.has(baseCommand)) {
      return false;
    }
  }
  return hasNonFallbackCommand;
}

// Commands that should not be auto-backgrounded
const DISALLOWED_AUTO_BACKGROUND_COMMANDS = ['sleep' // Sleep should run in foreground unless explicitly backgrounded by user