--- milter-regex.c.orig	2020-10-07 13:25:30.000000000 +1100
+++ milter-regex.c	2020-10-07 13:26:01.000000000 +1100
@@ -61,7 +61,7 @@
 		    size_t);
 
 static const char	*rule_file_name = "/etc/milter-regex.conf";
-static int		 debug = 0;
+static int		 debug = 0, foreground = 0;
 static unsigned		 maxlines = 0;
 static pthread_mutex_t	 mutex;
 
@@ -697,7 +697,7 @@
 	int test_ruleset = 0;
 	FILE *f = NULL;
 
-	while ((ch = getopt(argc, argv, "c:df:j:l:m:p:r:tu:G:P:U:")) != -1) {
+	while ((ch = getopt(argc, argv, "c:dFf:j:l:m:p:r:tu:G:P:U:")) != -1) {
 		switch (ch) {
 		case 'c':
 			rule_file_name = optarg;
@@ -705,6 +705,9 @@
 		case 'd':
 			debug = 1;
 			break;
+		case 'F':
+			foreground = 1; 
+			break;
 		case 'f': {
 			int i;
 
@@ -863,7 +866,7 @@
 	}
 
 	/* daemonize (detach from controlling terminal) */
-	if (!debug && daemon(0, 0)) {
+	if ( !debug && !foreground && daemon(0, 0)) {
 		perror("daemon");
 		goto done;
 	}