t / chainlint / nested-subshell.teston commit match-trees: use hashcpy to splice trees (f55ac43)
   1(
   2        cd foo &&
   3        (
   4                echo a &&
   5                echo b
   6        ) >file &&
   7
   8        cd foo &&
   9        (
  10# LINT: nested multi-line subshell not presently checked for missing "&&"
  11                echo a
  12                echo b
  13        ) >file
  14)