as per subject; i've used == when i really wanted to use just one =

ok?

commit 99b22dc2a68b9ef5382873df38c11dcd75df175b (main)
from: Omar Polo <op@omarpolo.com>
date: Tue Mar  8 08:43:42 2022 UTC
 
 use test(1) = operand instead of (non standard) ==
 
diff 60ceff941770f262108f0b17924715ec7477b2fa 019b80b2321304dd7a5cdc40c4713185ca84bb18
blob - 3545c70c0dda58bb94b05ce3283e0363d56bd80b
blob + d956651dc1298af9cd688157029d3370fa2e25c2
--- regress/cmdline/patch.sh
+++ regress/cmdline/patch.sh
@@ -418,7 +418,7 @@ EOF
 		 > $testroot/stdout \
 		2> $testroot/stderr
 	ret=$?
-	if [ $ret == 0 ]; then # should fail
+	if [ $ret = 0 ]; then # should fail
 		test_done $testroot 1
 		return 1
 	fi
@@ -468,7 +468,7 @@ EOF
 		 > $testroot/stdout \
 		2> $testroot/stderr
 	ret=$?
-	if [ $ret == 0 ]; then
+	if [ $ret = 0 ]; then
 		echo "got managed to apply an invalid patch"
 		test_done $testroot 1
 		return 1
@@ -503,7 +503,7 @@ EOF
 		 > $testroot/stdout \
 		2> $testroot/stderr
 	ret=$?
-	if [ $ret == 0 ]; then
+	if [ $ret = 0 ]; then
 		echo "got managed to apply an invalid patch"
 		test_done $testroot 1
 		return 1
@@ -555,7 +555,7 @@ EOF
 		 > $testroot/stdout \
 		2> $testroot/stderr
 	ret=$?
-	if [ $ret == 0 ]; then # should fail
+	if [ $ret = 0 ]; then # should fail
 		test_done $testroot 1
 		return 1
 	fi