--- build-aux/find-files-with-tests.sh.orig	2014-01-20 20:35:29.000000000 -0700
+++ build-aux/find-files-with-tests.sh	2014-01-20 20:36:30.000000000 -0700
@@ -2,7 +2,7 @@
 
 set -e
 GREP=${GREP:-grep}
-SED=${SED:-sed}
+SED=gsed
 
 srcdir="$1"
 shift
--- libinterp/find-defun-files.sh.orig	2014-01-20 20:08:01.000000000 -0700
+++ libinterp/find-defun-files.sh	2014-01-20 20:08:20.000000000 -0700
@@ -1,7 +1,7 @@
 #! /bin/sh
 
 set -e
-SED=${SED:-sed}
+SED=gsed
 EGREP=${EGREP:-egrep}
 
 # Some stupid egreps don't like empty elements in alternation patterns,
--- libinterp/mk-pkg-add.orig	2014-01-20 20:04:33.000000000 -0700
+++ libinterp/mk-pkg-add	2014-01-20 20:05:01.000000000 -0700
@@ -20,7 +20,7 @@
 
 set -e
 
-SED=${SED:-'sed'}
+SED=gsed
 
 for f in "$@"; do
   if [ -f $f ]; then
--- libinterp/mkbuiltins.orig	2014-01-20 19:17:57.000000000 -0700
+++ libinterp/mkbuiltins	2014-01-20 19:18:24.000000000 -0700
@@ -23,7 +23,7 @@
   exit 1
 fi
 
-SED=${SED:-'sed'}
+SED=gsed
 
 make_header=false
 make_source=false
--- libinterp/mkdefs.orig	2014-01-20 20:17:00.000000000 -0700
+++ libinterp/mkdefs	2014-01-20 20:17:15.000000000 -0700
@@ -18,7 +18,7 @@
 # along with Octave; see the file COPYING.  If not, see
 # <http://www.gnu.org/licenses/>.
 
-SED=${SED:-'sed'}
+SED=gsed
 
 if [ $# -ne 2 ]; then
   echo "usage: mkdefs srcdir file < preprocessed-file-contents" 1>&2
--- libinterp/mkops.orig	2014-01-20 20:26:24.000000000 -0700
+++ libinterp/mkops	2014-01-20 20:26:50.000000000 -0700
@@ -18,7 +18,7 @@
 # along with Octave; see the file COPYING.  If not, see
 # <http://www.gnu.org/licenses/>.
 
-SED=${SED:-'sed'}
+SED=gsed
 
 cat << \EOF
 // DO NOT EDIT!  Generated automatically by mkops.
--- liboctave/cruft/mkf77def.in.orig	2014-01-20 05:27:13.000000000 -0700
+++ liboctave/cruft/mkf77def.in	2014-01-20 05:27:28.000000000 -0700
@@ -18,7 +18,7 @@
 # along with Octave; see the file COPYING.  If not, see
 # <http://www.gnu.org/licenses/>.
 
-SED=${SED:-'sed'}
+SED=gsed
 AWK=${AWK:-'awk'}
 
 F77_TOLOWER="@F77_APPEND_UNDERSCORE@"
--- scripts/mk-pkg-add.orig	2014-01-20 20:30:14.000000000 -0700
+++ scripts/mk-pkg-add	2014-01-20 20:30:36.000000000 -0700
@@ -24,7 +24,7 @@
 
 set -e
 
-SED=${SED:-'sed'}
+SED=gsed
 
 prefix="$1/"
 shift