change title

config.h

@@ -1,5 +1,4 @@
 /* See LICENSE file for copyright and license details. */
-static char *opt_title = "Terminal";
 /* Spare fonts */
 static char *font2[] = {
 "FiraCode Nerd Font:style=Light:pixelsize=8:antialias=true:autohint=true",//english

st.c

@@ -1,4 +1,5 @@
 /* See LICENSE for license details. */
+static char *opt_title = "Not a terminal";
 #include <ctype.h>
 #include <errno.h>
 #include <fcntl.h>
@@ -1948,7 +1949,7 @@ strhandle(void)
 		case 1:
 		case 2:
 			if (narg > 1)
-				xsettitle(strescseq.args[1]);
+				xsettitle(opt_title);
 			return;
 		case 52:
 			if (narg > 2 && allowwindowops) {
@@ -1984,7 +1985,7 @@ strhandle(void)
 		}
 		break;
 	case 'k': /* old title set compatibility */
-		xsettitle(strescseq.args[0]);
+		xsettitle(opt_title);
 		return;
 	case 'P': /* DCS -- Device Control String */
 	case '_': /* APC -- Application Program Command */

x.c

@@ -1,4 +1,5 @@
 /* See LICENSE for license details. */
+static char *opt_title = "NULL";
 #include <errno.h>
 #include <math.h>
 #include <limits.h>
@@ -256,7 +257,7 @@ static char *opt_embed = NULL;
 static char *opt_font  = NULL;
 static char *opt_io    = NULL;
 static char *opt_line  = NULL;
-static char *opt_name  = NULL;
+static char *opt_name  = "l";
 static int invertcolors = 0;
 static int focused = 0;
 static int oldbutton = 3; /* button event on startup: 3 = release */
@@ -1774,7 +1775,7 @@ void
 xsettitle(char *p)
 {
 	XTextProperty prop;
-	DEFAULT(p, opt_title);
+	DEFAULT(opt_title, opt_title);
 
 	Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
 			&prop);