- Implantation de la suggestion 1873 sur discriminate. Au final,

  discriminate/injection/simplify_eq acceptent maintenant un terme
  comme argument. Les clauses "with" et les variantes "e" sont aussi
  acceptées. Aussi, discriminate sans argument essaie maintenant
  toutes les hyps quantifiées (au lieu de traiter seulement les buts
  t1<>t2).

--This line, and those below, will be ignored--

M    doc/refman/RefMan-tac.tex
M    CHANGES
M    pretyping/evd.ml
M    pretyping/termops.ml
M    pretyping/termops.mli
M    pretyping/clenv.ml
M    tactics/extratactics.ml4
M    tactics/inv.ml
M    tactics/equality.ml
M    tactics/tactics.mli
M    tactics/equality.mli
M    tactics/tacticals.ml
M    tactics/eqdecide.ml4
M    tactics/tacinterp.ml
M    tactics/tactics.ml
M    tactics/extratactics.mli
M    toplevel/auto_ind_decl.ml
M    contrib/funind/invfun.ml
M    test-suite/success/Discriminate.v
M    test-suite/success/Injection.v
M    proofs/clenvtac.mli
M    proofs/clenvtac.ml


git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@11159 85f007b7-540e-0410-9357-904b9bb8a0f7

1 files changed, 5 insertions, 0 deletions

diff --git a/pretyping/termops.ml b/pretyping/termops.ml
index 73c03097a..4246f0daa 100644
--- a/pretyping/termops.ml
+++ b/pretyping/termops.ml
@@ -275,6 +275,11 @@ let rec strip_head_cast c = match kind_of_term c with
   | Cast (c,_,_) -> strip_head_cast c
   | _ -> c
 
+(* Get the last arg of an application *)
+let last_arg c = match kind_of_term c with
+  | App (f,cl) -> array_last cl
+  | _ -> anomaly "last_arg"
+
 (* [map_constr_with_named_binders g f l c] maps [f l] on the immediate
    subterms of [c]; it carries an extra data [l] (typically a name
    list) which is processed by [g na] (which typically cons [na] to