From 27ea35bafdf0aefe1dcf49dfed1a18c3f158efa5 Mon Sep 17 00:00:00 2001
From: herbelin
Date: Sat, 28 Apr 2007 13:56:03 +0000
Subject: Ajout de la possibilité de faire référence dans certains cas à un nom
 par sa notation (p.ex. pour unfold ou pour lazy delta). Ex: Goal 3+4 = 7.
 unfold "+".

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@9804 85f007b7-540e-0410-9357-904b9bb8a0f7
---
 lib/util.ml | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'lib/util.ml')

diff --git a/lib/util.ml b/lib/util.ml
index ee373120e2..8b3fb2428b 100644
--- a/lib/util.ml
+++ b/lib/util.ml
@@ -778,6 +778,11 @@ let option_smartmap f a = match a with
   | None -> a
   | Some x -> let x' = f x in if x'==x then a else Some x'
 
+let rec filter_some = function
+  | [] -> []
+  | None::l -> filter_some l
+  | Some a::l -> a :: filter_some l
+
 let map_succeed f = 
   let rec map_f = function 
     | [] -> []
-- 
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