applied Garys patch in a slightly modified way - dwm - dynamic window manager
 (HTM) git clone https://git.parazyd.org/dwm
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       ---
 (DIR) commit 27b0142203e06bdbb1ff3c2179ac88e08aa4295e
 (DIR) parent 867ba360300682859ab963222ec0a3f42586ff54
 (HTM) Author: garbeam@gmail.com <unknown>
       Date:   Sat,  2 Jul 2011 11:02:22 +0200
       
       applied Garys patch in a slightly modified way
       Diffstat:
         M dwm.c                               |       2 +-
       
       1 file changed, 1 insertion(+), 1 deletion(-)
       ---
 (DIR) diff --git a/dwm.c b/dwm.c
       @@ -529,7 +529,7 @@ clientmessage(XEvent *e) {
                if(!c)
                        return;
                if(cme->message_type == netatom[NetWMState] && cme->data.l[1] == netatom[NetWMFullscreen]) {
       -                if(cme->data.l[0]) {
       +                if(cme->data.l[0] && !c->isfullscreen) {
                                XChangeProperty(dpy, cme->window, netatom[NetWMState], XA_ATOM, 32,
                                                PropModeReplace, (unsigned char*)&netatom[NetWMFullscreen], 1);
                                c->isfullscreen = True;