From 637e5adc5ed4fc4a2079fda68df9fcfe3f107f59 Mon Sep 17 00:00:00 2001
From: kxxt <rsworktech@gmail.com>
Date: Thu, 22 Sep 2022 22:59:24 +0800
Subject: [PATCH 1/3] refactor: use grep -E instead of egrep

Change-Id: Iedeb3433c5d27488e7de0199a7f3effe1d79c82a
---
 plan9/mkerrors.sh | 4 ++--
 unix/mkerrors.sh  | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/plan9/mkerrors.sh b/plan9/mkerrors.sh
index 85309c4a5b..4390e83bd6 100755
--- a/plan9/mkerrors.sh
+++ b/plan9/mkerrors.sh
@@ -126,7 +126,7 @@ errors=$(
 signals=$(
 	echo '#include <signal.h>' | $CC -x c - -E -dM $ccflags |
 	awk '$1=="#define" && $2 ~ /^SIG[A-Z0-9]+$/ { print $2 }' |
-	egrep -v '(SIGSTKSIZE|SIGSTKSZ|SIGRT)' |
+	grep -Ev '(SIGSTKSIZE|SIGSTKSZ|SIGRT)' |
 	sort
 )
 
@@ -136,7 +136,7 @@ echo '#include <errno.h>' | $CC -x c - -E -dM $ccflags |
 	sort >_error.grep
 echo '#include <signal.h>' | $CC -x c - -E -dM $ccflags |
 	awk '$1=="#define" && $2 ~ /^SIG[A-Z0-9]+$/ { print "^\t" $2 "[ \t]*=" }' |
-	egrep -v '(SIGSTKSIZE|SIGSTKSZ|SIGRT)' |
+	grep -Ev '(SIGSTKSIZE|SIGSTKSZ|SIGRT)' |
 	sort >_signal.grep
 
 echo '// mkerrors.sh' "$@"
diff --git a/unix/mkerrors.sh b/unix/mkerrors.sh
index 2ab44aa659..0656479580 100755
--- a/unix/mkerrors.sh
+++ b/unix/mkerrors.sh
@@ -642,7 +642,7 @@ errors=$(
 signals=$(
 	echo '#include <signal.h>' | $CC -x c - -E -dM $ccflags |
 	awk '$1=="#define" && $2 ~ /^SIG[A-Z0-9]+$/ { print $2 }' |
-	egrep -v '(SIGSTKSIZE|SIGSTKSZ|SIGRT|SIGMAX64)' |
+	grep -Ev '(SIGSTKSIZE|SIGSTKSZ|SIGRT|SIGMAX64)' |
 	sort
 )
 
@@ -652,7 +652,7 @@ echo '#include <errno.h>' | $CC -x c - -E -dM $ccflags |
 	sort >_error.grep
 echo '#include <signal.h>' | $CC -x c - -E -dM $ccflags |
 	awk '$1=="#define" && $2 ~ /^SIG[A-Z0-9]+$/ { print "^\t" $2 "[ \t]*=" }' |
-	egrep -v '(SIGSTKSIZE|SIGSTKSZ|SIGRT|SIGMAX64)' |
+	grep -Ev '(SIGSTKSIZE|SIGSTKSZ|SIGRT|SIGMAX64)' |
 	sort >_signal.grep
 
 echo '// mkerrors.sh' "$@"

From 9f5c279168775de67ef8b2cde9d0f6ff5f827839 Mon Sep 17 00:00:00 2001
From: kxxt <rsworktech@gmail.com>
Date: Sat, 1 Oct 2022 08:07:51 +0800
Subject: [PATCH 2/3] simplify egrep syntax

Change-Id: I1d9ccc8dd70051a962a2cc5195cb08148d5c3549
---
 plan9/mkerrors.sh | 4 ++--
 unix/mkerrors.sh  | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/plan9/mkerrors.sh b/plan9/mkerrors.sh
index 4390e83bd6..70355d699a 100755
--- a/plan9/mkerrors.sh
+++ b/plan9/mkerrors.sh
@@ -126,7 +126,7 @@ errors=$(
 signals=$(
 	echo '#include <signal.h>' | $CC -x c - -E -dM $ccflags |
 	awk '$1=="#define" && $2 ~ /^SIG[A-Z0-9]+$/ { print $2 }' |
-	grep -Ev '(SIGSTKSIZE|SIGSTKSZ|SIGRT)' |
+	grep -Ev 'SIGSTKSIZE|SIGSTKSZ|SIGRT' |
 	sort
 )
 
@@ -136,7 +136,7 @@ echo '#include <errno.h>' | $CC -x c - -E -dM $ccflags |
 	sort >_error.grep
 echo '#include <signal.h>' | $CC -x c - -E -dM $ccflags |
 	awk '$1=="#define" && $2 ~ /^SIG[A-Z0-9]+$/ { print "^\t" $2 "[ \t]*=" }' |
-	grep -Ev '(SIGSTKSIZE|SIGSTKSZ|SIGRT)' |
+	grep -Ev 'SIGSTKSIZE|SIGSTKSZ|SIGRT' |
 	sort >_signal.grep
 
 echo '// mkerrors.sh' "$@"
diff --git a/unix/mkerrors.sh b/unix/mkerrors.sh
index 0656479580..bcfb55b6c7 100755
--- a/unix/mkerrors.sh
+++ b/unix/mkerrors.sh
@@ -642,7 +642,7 @@ errors=$(
 signals=$(
 	echo '#include <signal.h>' | $CC -x c - -E -dM $ccflags |
 	awk '$1=="#define" && $2 ~ /^SIG[A-Z0-9]+$/ { print $2 }' |
-	grep -Ev '(SIGSTKSIZE|SIGSTKSZ|SIGRT|SIGMAX64)' |
+	grep -Ev 'SIGSTKSIZE|SIGSTKSZ|SIGRT|SIGMAX64' |
 	sort
 )
 
@@ -652,7 +652,7 @@ echo '#include <errno.h>' | $CC -x c - -E -dM $ccflags |
 	sort >_error.grep
 echo '#include <signal.h>' | $CC -x c - -E -dM $ccflags |
 	awk '$1=="#define" && $2 ~ /^SIG[A-Z0-9]+$/ { print "^\t" $2 "[ \t]*=" }' |
-	grep -Ev '(SIGSTKSIZE|SIGSTKSZ|SIGRT|SIGMAX64)' |
+	grep -Ev 'SIGSTKSIZE|SIGSTKSZ|SIGRT|SIGMAX64' |
 	sort >_signal.grep
 
 echo '// mkerrors.sh' "$@"

From 1eee6147666503d274b244a65daa58cded466704 Mon Sep 17 00:00:00 2001
From: kxxt <rsworktech@gmail.com>
Date: Sat, 1 Oct 2022 08:12:21 +0800
Subject: [PATCH 3/3] use grep

Change-Id: I94e912c90f2f0e3c4eee5b8f3d1a67d3a58ee066
---
 plan9/mkerrors.sh | 4 ++--
 unix/mkerrors.sh  | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/plan9/mkerrors.sh b/plan9/mkerrors.sh
index 70355d699a..526d04ab68 100755
--- a/plan9/mkerrors.sh
+++ b/plan9/mkerrors.sh
@@ -126,7 +126,7 @@ errors=$(
 signals=$(
 	echo '#include <signal.h>' | $CC -x c - -E -dM $ccflags |
 	awk '$1=="#define" && $2 ~ /^SIG[A-Z0-9]+$/ { print $2 }' |
-	grep -Ev 'SIGSTKSIZE|SIGSTKSZ|SIGRT' |
+	grep -v 'SIGSTKSIZE\|SIGSTKSZ\|SIGRT' |
 	sort
 )
 
@@ -136,7 +136,7 @@ echo '#include <errno.h>' | $CC -x c - -E -dM $ccflags |
 	sort >_error.grep
 echo '#include <signal.h>' | $CC -x c - -E -dM $ccflags |
 	awk '$1=="#define" && $2 ~ /^SIG[A-Z0-9]+$/ { print "^\t" $2 "[ \t]*=" }' |
-	grep -Ev 'SIGSTKSIZE|SIGSTKSZ|SIGRT' |
+	grep -v 'SIGSTKSIZE\|SIGSTKSZ\|SIGRT' |
 	sort >_signal.grep
 
 echo '// mkerrors.sh' "$@"
diff --git a/unix/mkerrors.sh b/unix/mkerrors.sh
index bcfb55b6c7..7456d9ddde 100755
--- a/unix/mkerrors.sh
+++ b/unix/mkerrors.sh
@@ -642,7 +642,7 @@ errors=$(
 signals=$(
 	echo '#include <signal.h>' | $CC -x c - -E -dM $ccflags |
 	awk '$1=="#define" && $2 ~ /^SIG[A-Z0-9]+$/ { print $2 }' |
-	grep -Ev 'SIGSTKSIZE|SIGSTKSZ|SIGRT|SIGMAX64' |
+	grep -v 'SIGSTKSIZE\|SIGSTKSZ\|SIGRT\|SIGMAX64' |
 	sort
 )
 
@@ -652,7 +652,7 @@ echo '#include <errno.h>' | $CC -x c - -E -dM $ccflags |
 	sort >_error.grep
 echo '#include <signal.h>' | $CC -x c - -E -dM $ccflags |
 	awk '$1=="#define" && $2 ~ /^SIG[A-Z0-9]+$/ { print "^\t" $2 "[ \t]*=" }' |
-	grep -Ev 'SIGSTKSIZE|SIGSTKSZ|SIGRT|SIGMAX64' |
+	grep -v 'SIGSTKSIZE\|SIGSTKSZ\|SIGRT\|SIGMAX64' |
 	sort >_signal.grep
 
 echo '// mkerrors.sh' "$@"