# HG changeset patch
# Parent 3b5f9910413a84c53905b237e5fbf0728bb1081c

diff -r 3b5f9910413a dwm.c
--- a/dwm.c	Wed Oct 27 15:43:16 2010 +0200
+++ b/dwm.c	Wed Oct 27 15:46:10 2010 +0200
@@ -275,6 +275,7 @@
 static Monitor *mons = NULL, *selmon = NULL;
 static Window root;
 static char **args;
+static Atom dwmatom_tags;
 
 /* configuration, allows nested code to access above variables */
 #include "config.h"
@@ -1104,8 +1105,15 @@
 		c->tags = t->tags;
 	}
 	else {
+		Atom atom; int format; unsigned long n, extra; unsigned int *ptags;
 		c->mon = selmon;
-		applyrules(c);
+		if(XGetWindowProperty(dpy, w, dwmatom_tags, 0L, 1L, False, XA_CARDINAL,
+		  &atom, &format, &n, &extra, (unsigned char **)&ptags)==Success && n==1 && *ptags!=0)
+			c->tags = *ptags; /* override rule tags with memorized tags */
+		else {
+			applyrules(c);
+			XChangeProperty(dpy, w, dwmatom_tags, XA_CARDINAL, 32, PropModeReplace, (unsigned char *)&c->tags, 1);
+		}
 	}
 	/* geometry */
 	c->x = c->oldx = wa->x + c->mon->wx;
@@ -1534,6 +1542,7 @@
 	netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
 	netatom[NetWMState] = XInternAtom(dpy, "_NET_WM_STATE", False);
 	netatom[NetWMFullscreen] = XInternAtom(dpy, "_NET_WM_STATE_FULLSCREEN", False);
+	dwmatom_tags = XInternAtom(dpy, "DWM_TAGS", False);
 	/* init cursors */
 	cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
 	cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
@@ -1607,6 +1616,7 @@
 tag(const Arg *arg) {
 	if(selmon->sel && arg->ui & TAGMASK) {
 		selmon->sel->tags = arg->ui & TAGMASK;
+		XChangeProperty(dpy, selmon->sel->win, dwmatom_tags, XA_CARDINAL, 32, PropModeReplace, (unsigned char *)&selmon->sel->tags, 1);
 		arrange(selmon);
 	}
 }
@@ -1687,6 +1697,7 @@
 	newtags = selmon->sel->tags ^ (arg->ui & TAGMASK);
 	if(newtags) {
 		selmon->sel->tags = newtags;
+		XChangeProperty(dpy, selmon->sel->win, dwmatom_tags, XA_CARDINAL, 32, PropModeReplace, (unsigned char *)&selmon->sel->tags, 1);
 		arrange(selmon);
 	}
 }