--- config.def.h
+++ config.def.h
@@ -30,6 +30,10 @@ static const Rule rules[] = {
 	{ "Gimp",     NULL,       NULL,       0,            1,           -1 },
 	{ "Firefox",  NULL,       NULL,       1 << 8,       0,           -1 },
 };
+/* window swallowing */
+static const int swaldecay = 3;
+static const int swalretroactive = 1;
+static const char swalsymbol[] = "👅";
 
 /* layout(s) */
 static const float mfact     = 0.55; /* factor of master area size [0.05..0.95] */
@@ -85,6 +89,7 @@ static const Key keys[] = {
 	{ MODKEY,                       XK_period, focusmon,       {.i = +1 } },
 	{ MODKEY|ShiftMask,             XK_comma,  tagmon,         {.i = -1 } },
 	{ MODKEY|ShiftMask,             XK_period, tagmon,         {.i = +1 } },
+  { MODKEY,                       XK_u,      swalstopsel,    {0} },
 	TAGKEYS(                        XK_1,                      0)
 	TAGKEYS(                        XK_2,                      1)
 	TAGKEYS(                        XK_3,                      2)
@@ -108,6 +113,7 @@ static const Button buttons[] = {
 	{ ClkClientWin,         MODKEY,         Button1,        movemouse,      {0} },
 	{ ClkClientWin,         MODKEY,         Button2,        togglefloating, {0} },
 	{ ClkClientWin,         MODKEY,         Button3,        resizemouse,    {0} },
+  { ClkClientWin,         MODKEY|ShiftMask, Button1,      swalmouse,      {0} },
 	{ ClkTagBar,            0,              Button1,        view,           {0} },
 	{ ClkTagBar,            0,              Button3,        toggleview,     {0} },
 	{ ClkTagBar,            MODKEY,         Button1,        tag,            {0} },