t / chainlint / arithmetic-expansion.expecton commit merge: remove drop_save() in favor of remove_merge_branch_state() (b643355)
   1(
   2        foo &&
   3        bar=$((42 + 1)) &&
   4        baz
   5>) &&
   6(
   7?!AMP?! bar=$((42 + 1))
   8        baz
   9>)