Use ${BASH_SOURCE[0]} instead of $_ because the former is more dependable for preventing endless exec loops (see bug #135470).  Testing shows that this corrects the problem for the libtool ebuild when sed is used to generate ltmain.shT.

svn path=/main/trunk/; revision=3475
diff --git a/bin/sed b/bin/sed
index 6b1a566..d4b1d87 100755
--- a/bin/sed
+++ b/bin/sed
@@ -2,7 +2,7 @@
 # Copyright 2006 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
  
-scriptpath=$_
+scriptpath="${BASH_SOURCE[0]}"
 
 if [[ -n ${ESED} ]]; then
 	exec ${ESED} "$@"