t / chainlint / arithmetic-expansion.expecton commit tree-walk: store object_id in a separate member (ea82b2a)
   1(
   2        foo &&
   3        bar=$((42 + 1)) &&
   4        baz
   5>) &&
   6(
   7?!AMP?! bar=$((42 + 1))
   8        baz
   9>)