(X/Xmonad) us-intl, some dead keys do not work in terminal emulator

[Franco <franco00@gmx.com>]

Hello Debianer, I have a problem with US-international keyboard 
layout and X (I use Xmonad as WM).

As you know, dead keys like '`' allow you to make combinations 
such as '`'+'e'='è'.

This works in any X application (midori, etc.), but *not* in terminal 
emulators (like xterm, urxvt).

I poked a bit at the config files, with no luck. What do?

setxkbmap -print leads to:

xkb_keymap {
	xkb_keycodes  { include "evdev+aliases(qwerty)"	};
	xkb_types     { include "complete"	};
	xkb_compat    { include "complete"	};
	xkb_symbols   { include "pc+us(intl)+inet(evdev)"	};
	xkb_geometry  { include "pc(pc105)"	};
};