Fix the generation of code excerpts for the documentation.

	* doc/tools/split_sample.sh: Use $(...) instead of `...` so that
	backslashes are interpreted uniformly.
	Pass option `-h' to grep to prevent file names from being printed
	on OS X.
	Remove useless option `-R' passed to grep.

milena/ChangeLog

 2013-02-07  Roland Levillain  <roland@lrde.epita.fr>
+	Fix the generation of code excerpts for the documentation.
+
+	* doc/tools/split_sample.sh: Use $(...) instead of `...` so that
+	backslashes are interpreted uniformly.
+	Pass option `-h' to grep to prevent file names from being printed
+	on OS X.
+	Remove useless option `-R' passed to grep.
+
+2013-02-06  Roland Levillain  <roland@lrde.epita.fr>
+
 	Address warnings reported by clang++ in Milena.
 	* mln/canvas/browsing/diagonal2d.hh (diagonal2d_t::operator())

milena/doc/tools/split_sample.sh

 # /bin/sh
 
-# Copyright (C) 2008, 2009, 2010 EPITA Research and Development
+# Copyright (C) 2008, 2009, 2010, 2013 EPITA Research and Development
 # Laboratory (LRDE).
 #
 # This file is part of Olena.
@@ -22,8 +22,8 @@ if ! [ $# -eq 4 ]; then
   exit 1;
 fi
 
-begins=`grep -n -R '//[[:space:]]*\\\{' $1 | cut -d ':' -f 1`
-ends=`grep -n -R '//[[:space:]]*\\\}' $1 | cut -d ':' -f 1`
+begins=$(grep -n -h '//[[:space:]]*\\{' $1 | cut -d ':' -f 1)
+ends=$(grep -n -h '//[[:space:]]*\\}' $1 | cut -d ':' -f 1)
 
 if ! [ -z "$3" ]; then
   suffix=".$3"