diff -Nuar ocaml-3.11.1/ocamldoc/remove_DEBUG ocaml-3.11.1-nixpkgs/ocamldoc/remove_DEBUG
--- ocaml-3.11.1/ocamldoc/remove_DEBUG	2004-04-15 18:18:52.000000000 +0200
+++ ocaml-3.11.1-nixpkgs/ocamldoc/remove_DEBUG	2011-01-01 17:37:07.000000000 +0100
@@ -18,4 +18,4 @@
 # respecting the cpp # line annotation conventions
 
 echo "# 1 \"$1\""
-LC_ALL=C sed -e '/DEBUG/s/.*//' "$1"
+grep -v 'DEBUG' "$1"
