t / chainlint / bash-array.expecton commit switch: reject if some operation is in progress (c45f0f5)
   1(
   2        foo &&
   3        bar=(gumbo stumbo wumbo) &&
   4        baz
   5>) &&
   6(
   7        foo &&
   8        bar=${#bar[@]} &&
   9        baz
  10>)