and the winner is

draw.c

@@ -30,13 +30,13 @@ textnw(const char *text, unsigned int len) {
 }
 
 static void
-drawtext(const char *text, unsigned long col[ColLast], Bool dot, Bool corner) {
+drawtext(const char *text, unsigned long col[ColLast], Bool filleddot, Bool emptydot) {
 	int x, y, w, h;
 	static char buf[256];
 	unsigned int len, olen;
 	XGCValues gcv;
 	XRectangle r = { dc.x, dc.y, dc.w, dc.h };
-	XPoint pt[3];
+	XPoint pt[5];
 
 	XSetForeground(dpy, dc.gc, col[ColBG]);
 	XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
@@ -74,20 +74,25 @@ drawtext(const char *text, unsigned long col[ColLast], Bool dot, Bool corner) {
 		XChangeGC(dpy, dc.gc, GCForeground | GCFont, &gcv);
 		XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
 	}
-	if(dot) {
+	x = (h + 2) / 4;
+	if(filleddot) {
 		r.x = dc.x + 2;
 		r.y = dc.y + 2;
-		r.width = r.height = (h + 2) / 4;
+		r.width = r.height = x;
 		XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
 	}
-	if(corner) {
+	if(emptydot) {
-		pt[0].x = dc.x + 1;
+		pt[0].x = dc.x + 2;
-		pt[0].y = dc.y + dc.h / 2 + 1;
+		pt[0].y = dc.y + 2;
-		pt[1].x = 0;
+		pt[1].x = x;
-		pt[1].y = - dc.h / 2;
+		pt[1].y = 0;
-		pt[2].x = dc.h / 2;
+		pt[2].x = 0;
-		pt[2].y = 0;
+		pt[2].y = x;
-		XDrawLines(dpy, dc.drawable, dc.gc, pt, 3, CoordModePrevious);
+		pt[3].x = -x;
+		pt[3].y = 0;
+		pt[4].x = 0;
+		pt[4].y = -x;
+		XDrawLines(dpy, dc.drawable, dc.gc, pt, 5, CoordModePrevious);
 	}
 }
 

dwm.1

@@ -21,8 +21,9 @@ tags. Selecting certain tags displays all windows with these tags.
 dwm contains a small status bar which displays all available tags, the mode,
 the title of the focused window, and the text read from standard input. The
 selected tags are indicated with a different color. The tags of the focused
-window are indicated with a small point in the top left corner.  The tags which
+window are indicated with a filled square in the top left corner.  The tags
-are applied to one or more clients are indicated with a top line.
+which are applied to one or more clients are indicated with an empty square in
+the top left corner.
 .P
 dwm draws a 1-pixel border around windows to indicate the focus state.
 Unfocused windows contain a small bar in front of them displaying their title.