let eval_ng_tac (text, prefix_len, tac) =
match tac with
| GrafiteAst.NApply (_loc, t) -> NTactics.apply_tac (text,prefix_len,t)
+ | GrafiteAst.NCase1 (_loc,n) -> NTactics.case1_tac n
| GrafiteAst.NChange (_loc, pat, ww) ->
NTactics.change_tac
~where:(text,prefix_len,pat) ~with_what:(text,prefix_len,ww)