diff -r 5992bf56aa72 src/cmd/gofmt/test.sh
--- a/src/cmd/gofmt/test.sh	Thu Jul 15 13:04:04 2010 +1000
+++ b/src/cmd/gofmt/test.sh	Fri Jul 23 16:21:37 2010 -0700
@@ -52,6 +52,7 @@
 	"$1" "$2"; count "$F"
 }
 
+GREP_OPTIONS=""
 
 # apply to local files
 applydot() {
diff -r 5992bf56aa72 src/cmd/gotest/gotest
--- a/src/cmd/gotest/gotest	Thu Jul 15 13:04:04 2010 +1000
+++ b/src/cmd/gotest/gotest	Fri Jul 23 16:21:37 2010 -0700
@@ -13,6 +13,8 @@
 unset LANG
 export LC_ALL=C
 export LC_CTYPE=C
+export GREP_OPTIONS=""
+export GREP_COLORS=""
 
 GOBIN="${GOBIN:-$HOME/bin}"
 
diff -r 5992bf56aa72 src/pkg/deps.bash
--- a/src/pkg/deps.bash	Thu Jul 15 13:04:04 2010 +1000
+++ b/src/pkg/deps.bash	Fri Jul 23 16:21:37 2010 -0700
@@ -6,6 +6,9 @@
 OUT="Make.deps"
 TMP="Make.deps.tmp"
 
+GREP_OPTIONS=""
+GREP_COLORS=""
+
 if [ -f $OUT ] && ! [ -w $OUT ]; then
 	echo "$0: $OUT is read-only; aborting." 1>&2
 	exit 1
diff -r 5992bf56aa72 src/pkg/exp/eval/test.bash
--- a/src/pkg/exp/eval/test.bash	Thu Jul 15 13:04:04 2010 +1000
+++ b/src/pkg/exp/eval/test.bash	Fri Jul 23 16:21:37 2010 -0700
@@ -11,6 +11,8 @@
 set -e
 
 GOBIN="${GOBIN:-$HOME/bin}"
+GREP_OPTIONS=""
+GREP_COLORS=""
 
 "$GOBIN"/gomake
 "$GOBIN"/6g main.go && "$GOBIN"/6l main.6
diff -r 5992bf56aa72 src/quietgcc.bash
--- a/src/quietgcc.bash	Thu Jul 15 13:04:04 2010 +1000
+++ b/src/quietgcc.bash	Fri Jul 23 16:21:37 2010 -0700
@@ -36,6 +36,8 @@
 	-Wno-parentheses -Wno-unknown-pragmas -Wno-switch -Wno-comment \
 	"$@" >$tmp 2>&1
 status=$?
+GREP_OPTIONS=""
+GREP_COLORS=""
 egrep -v "$ignore" $tmp | uniq | tee $tmp.1
 
 # Make incompatible pointer type "warnings" stop the build.