From b3c76eb897efd1a86e76346dcb3608e761125af2 Mon Sep 17 00:00:00 2001
From: Simon Cruanes <simon.cruanes.2007@m4x.org>
Date: Thu, 3 Oct 2013 21:53:56 +0200
Subject: [PATCH] bugfix in Sequence.take

---
 sequence.ml | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/sequence.ml b/sequence.ml
index cf7d1a50..b6a4f850 100644
--- a/sequence.ml
+++ b/sequence.ml
@@ -329,11 +329,13 @@ exception ExitSequence
 (** Take at most [n] elements from the sequence *)
 let take n seq =
   let count = ref 0 in
-  fun k ->
-    try
-      seq
-        (fun x -> if !count < n then begin incr count; k x end
-                                else raise ExitSequence)
+  if n = 0 then empty
+    else fun k ->
+      try
+        seq (fun x ->
+          incr count;
+          k x;
+          if !count = n then raise ExitSequence)
     with ExitSequence -> ()
 
 (** Drop the [n] first elements of the sequence *)