scratchtags: allow moving / resizing scratchtag window to another monitor + minor comment

dwm.c

@@ -1297,7 +1297,7 @@ configurerequest(XEvent *e)
 				c->h = ev->height;
 			}
 			if ((c->x + c->w) > m->mx + m->mw && c->isfloating)
-				c->x = m->mx + (m->mw / 2 - WIDTH(c) / 2); /* center in x direction */
+				c->x = m->mx + (m->mw / 2 - WIDTH(c) / 2);  /* center in x direction */
 			if ((c->y + c->h) > m->my + m->mh && c->isfloating)
 				c->y = m->my + (m->mh / 2 - HEIGHT(c) / 2); /* center in y direction */
 			if ((ev->value_mask & (CWX|CWY)) && !(ev->value_mask & (CWWidth|CWHeight)))
@@ -2363,6 +2363,12 @@ movemouse(const Arg *arg)
 	} while (ev.type != ButtonRelease);
 	XUngrabPointer(dpy, CurrentTime);
 	if ((m = recttomon(c->x, c->y, c->w, c->h)) != selmon) {
+		#if SCRATCHPADS_PATCH
+		if (c->tags & SPTAGMASK) {
+			c->mon->tagset[c->mon->seltags] ^= (c->tags & SPTAGMASK);
+			m->tagset[m->seltags] |= (c->tags & SPTAGMASK);
+		}
+		#endif // SCRATCHPADS_PATCH
 		sendmon(c, m);
 		selmon = m;
 		focus(NULL);
@@ -2554,6 +2560,11 @@ resizeclient(Client *c, int x, int y, int w, int h)
 	configure(c);
 	#if FAKEFULLSCREEN_CLIENT_PATCH
 	if (c->fakefullscreen == 1)
+		/* Exception: if the client was in actual fullscreen and we exit out to fake fullscreen
+		 * mode, then the focus would drift to whichever window is under the mouse cursor at the
+		 * time. To avoid this we pass True to XSync which will make the X server disregard any
+		 * other events in the queue thus cancelling the EnterNotify event that would otherwise
+		 * have changed focus. */
 		XSync(dpy, True);
 	else
 		XSync(dpy, False);
@@ -2689,6 +2700,12 @@ resizemouse(const Arg *arg)
 	XUngrabPointer(dpy, CurrentTime);
 	while (XCheckMaskEvent(dpy, EnterWindowMask, &ev));
 	if ((m = recttomon(c->x, c->y, c->w, c->h)) != selmon) {
+		#if SCRATCHPADS_PATCH
+		if (c->tags & SPTAGMASK) {
+			c->mon->tagset[c->mon->seltags] ^= (c->tags & SPTAGMASK);
+			m->tagset[m->seltags] |= (c->tags & SPTAGMASK);
+		}
+		#endif // SCRATCHPADS_PATCH
 		sendmon(c, m);
 		selmon = m;
 		focus(NULL);