options: add --markmatch and -^ for activating the select-match behavior

And add, of course, the 'set markmatch' nanorc option.

src/definitions.h

@@ -343,7 +343,8 @@ enum {
 	BOOKSTYLE,
 	STATEFLAGS,
 	USE_MAGIC,
-	MINIBAR
+	MINIBAR,
+	MARK_MATCH
 };
 
 /* Structure types. */

src/nano.c

@@ -641,6 +641,7 @@ void usage(void)
 		print_opt("-z", "--suspendable", N_("Enable suspension"));
 #ifndef NANO_TINY
 	print_opt("-%", "--stateflags", N_("Show some states on the title bar"));
+	print_opt("-^", "--markmatch", N_("Select the match of a search"));
 	print_opt("-_", "--minibar", N_("Show bar at bottom with some state info"));
 #endif
 #ifdef HAVE_LIBMAGIC
@@ -1759,6 +1760,7 @@ int main(int argc, char **argv)
 		{"unix", 0, NULL, 'u'},
 		{"afterends", 0, NULL, 'y'},
 		{"stateflags", 0, NULL, '%'},
+		{"markmatch", 0, NULL, '^'},
 #endif
 #ifdef HAVE_LIBMAGIC
 		{"magic", 0, NULL, '!'},
@@ -1813,7 +1815,7 @@ int main(int argc, char **argv)
 		SET(RESTRICTED);
 
 	while ((optchr = getopt_long(argc, argv, "ABC:DEFGHIJ:KLMNOPQ:RST:UVWX:Y:Z"
-				"abcdef:ghijklmno:pqr:s:tuvwxyz$_%!", long_options, NULL)) != -1) {
+				"abcdef:ghijklmno:pqr:s:tuvwxyz$%^_!", long_options, NULL)) != -1) {
 		switch (optchr) {
 #ifndef NANO_TINY
 			case 'A':
@@ -2056,6 +2058,9 @@ int main(int argc, char **argv)
 			case '%':
 				SET(STATEFLAGS);
 				break;
+			case '^':
+				SET(MARK_MATCH);
+				break;
 #endif
 #ifdef HAVE_LIBMAGIC
 			case '!':

src/rcfile.c

@@ -109,6 +109,7 @@ static const rcoption rcopts[] = {
 	{"indicator", INDICATOR},
 	{"jumpyscrolling", JUMPY_SCROLLING},
 	{"locking", LOCKING},
+	{"markmatch", MARK_MATCH},
 	{"matchbrackets", 0},
 	{"minibar", MINIBAR},
 	{"noconvert", NO_CONVERT},

src/search.c

@@ -323,7 +323,7 @@ int findnextstr(const char *needle, bool whole_word_only, int modus,
 		*match_len = found_len;
 
 #ifndef NANO_TINY
-	if (modus == JUSTFIND && (!openfile->mark || openfile->softmark)) {
+	if (modus == JUSTFIND && ISSET(MARK_MATCH) && (!openfile->mark || openfile->softmark)) {
 		openfile->mark = line;
 		openfile->mark_x = found_x + found_len;
 		openfile->softmark = TRUE;