G.NCases (loc, what, where)
| IDENT "nchange"; what = pattern_spec; "with"; with_what = tactic_term ->
G.NChange (loc, what, with_what)
G.NCases (loc, what, where)
| IDENT "nchange"; what = pattern_spec; "with"; with_what = tactic_term ->
G.NChange (loc, what, with_what)