Function parseTabStatus

src/ink/termio/osc.ts:350–366

* Parse OSC 21337 payload: `key=value;key=value;...` with `\;` and `\\` * escapes inside values. Bare key or `key=` clears that field; unknown * keys are ignored.

(data: string)

 * keys are ignored.
 */
function parseTabStatus(data: string): TabStatusAction {
  const action: TabStatusAction = {}
  for (const [key, value] of splitTabStatusPairs(data)) {
    switch (key) {
      case 'indicator':
        action.indicator = value === '' ? null : parseOscColor(value)
        break
      case 'status':
        action.status = value === '' ? null : value
        break
      case 'status-color':
        action.statusColor = value === '' ? null : parseOscColor(value)
        break
    }
  }
  return action
}

/** Split `k=v;k=v` honoring `\;` and `\\` escapes. Yields [key, unescapedValue]. */
function* splitTabStatusPairs(data: string): Generator<[string, string]> {