Function physicalRows

src/setup/prompt.ts:49–52

(s: string, cols: number)

 *  move the cursor up by the right amount — counting logical lines undercounts when
 *  long options (e.g. long base URLs) wrap, leaving stale rows that pile up. */
export function physicalRows(s: string, cols: number): number {
  if (cols <= 0) return 1;
  return Math.max(1, Math.ceil(displayWidth(s) / cols));
}

/** Compute the next highlighted index for a keypress. Returns the same index for no-op keys. Pure → testable. */
export function moveSelection(current: number, keyName: string | undefined, len: number): number {