[PATCH 8/8] contrib: use grep -E instead of egrep

[Xi Ruoyao <xry111@xry111.site>]

egrep has been deprecated in favor of grep -E for a long time, and the
next grep release (3.8 or 4.0) will print a warning of egrep is used.
Stop using egrep so we won't see the warning.

contrib/ChangeLog:

	* check_GNU_style.sh: Use grep -E instead of egrep.
	* test_summary: Likewise.
	* warn_summary: Likewise.
---
 contrib/check_GNU_style.sh | 10 +++++-----
 contrib/test_summary       |  2 +-
 contrib/warn_summary       |  2 +-
 3 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/contrib/check_GNU_style.sh b/contrib/check_GNU_style.sh
index fb7494661ee..535be65f063 100755
--- a/contrib/check_GNU_style.sh
+++ b/contrib/check_GNU_style.sh
@@ -113,7 +113,7 @@ g (){
 
     local found=false
     cat $inp \
-	| egrep $color -- "$arg" \
+	| grep -E $color -- "$arg" \
 	> "$tmp" && found=true
 
     if $found; then
@@ -130,8 +130,8 @@ ag (){
 
     local found=false
     cat $inp \
-	| egrep $color -- "$arg1" \
-	| egrep $color -- "$arg2" \
+	| grep -E $color -- "$arg1" \
+	| grep -E $color -- "$arg2" \
 	> "$tmp" && found=true
 
     if $found; then
@@ -148,8 +148,8 @@ vg (){
 
     local found=false
     cat $inp \
-	| egrep -v -- "$varg" \
-	| egrep $color -- "$arg" \
+	| grep -E -v -- "$varg" \
+	| grep -E $color -- "$arg" \
 	> "$tmp" && found=true
 
     if $found; then
diff --git a/contrib/test_summary b/contrib/test_summary
index 5760b053ec2..30494077aaa 100755
--- a/contrib/test_summary
+++ b/contrib/test_summary
@@ -77,7 +77,7 @@ for file in $files; do
     { $anychange ||
       anychange=`diff $file.sent $file 2>/dev/null |
 	if test ! -f $file.sent ||
-	   egrep '^[<>] (XPASS|FAIL)' >/dev/null; then
+	   grep -E '^[<>] (XPASS|FAIL)' >/dev/null; then
 	    echo true
 	else
 	    echo false
diff --git a/contrib/warn_summary b/contrib/warn_summary
index d4c8b6cdb19..eb88437e79d 100755
--- a/contrib/warn_summary
+++ b/contrib/warn_summary
@@ -57,7 +57,7 @@ subdirectoryFilter()
   else
     if test "$filter" = nosub ; then
       # Omit all subdirectories.
-      egrep -v '/gcc/(ch|cp|f|fortran|ada|intl|fixinc)/'
+      grep -E -v '/gcc/(ch|cp|f|fortran|ada|intl|fixinc)/'
     else
       # Pass through only subdir $filter.
       grep "/gcc/$filter/"
-- 
2.36.1