Change default keybindings

CTRL+SHIFT is an impossible combination in the terminal world
(0x20 | x & 0x1F), so it is perfect to be used for internals
shortcuts of terminals, and being a double combination
reduces the prossibility of having comflicts.

config.def.h

@@ -162,6 +162,7 @@ MouseShortcut mshortcuts[] = {
 
 /* Internal keyboard shortcuts. */
 #define MODKEY Mod1Mask
+#define TERMMOD (ControlMask|ShiftMask)
 
 Shortcut shortcuts[] = {
 	/* mask                 keysym          function        argument */
@@ -169,15 +170,14 @@ Shortcut shortcuts[] = {
 	{ ControlMask,          XK_Print,       toggleprinter,  {.i =  0} },
 	{ ShiftMask,            XK_Print,       printscreen,    {.i =  0} },
 	{ XK_ANY_MOD,           XK_Print,       printsel,       {.i =  0} },
-	{ MODKEY|ShiftMask,     XK_Prior,       zoom,           {.f = +1} },
-	{ MODKEY|ShiftMask,     XK_Next,        zoom,           {.f = -1} },
-	{ MODKEY|ShiftMask,     XK_Home,        zoomreset,      {.f =  0} },
-	{ ShiftMask,            XK_Insert,      selpaste,       {.i =  0} },
-	{ MODKEY|ShiftMask,     XK_Insert,      clippaste,      {.i =  0} },
-	{ MODKEY|ShiftMask,     XK_C,           clipcopy,       {.i =  0} },
-	{ MODKEY|ShiftMask,     XK_V,           clippaste,      {.i =  0} },
-	{ MODKEY,               XK_Num_Lock,    numlock,        {.i =  0} },
-	{ MODKEY,               XK_Control_L,   iso14755,       {.i =  0} },
+	{ TERMMOD,              XK_Prior,       zoom,           {.f = +1} },
+	{ TERMMOD,              XK_Next,        zoom,           {.f = -1} },
+	{ TERMMOD,              XK_Home,        zoomreset,      {.f =  0} },
+	{ TERMMOD,              XK_C,           clipcopy,       {.i =  0} },
+	{ TERMMOD,              XK_V,           clippaste,      {.i =  0} },
+	{ TERMMOD,              XK_Y,           selpaste,       {.i =  0} },
+	{ TERMMOD,              XK_Num_Lock,    numlock,        {.i =  0} },
+	{ TERMMOD,              XK_I,           iso14755,       {.i =  0} },
 };
 
 /*