Je ne sais pas si ça peut être utile, mais dans le man de urxvt, tu as ceci :
[code] -keysym.sym string
Remap a key symbol. See resource keysym.
…[plus bas]
keysym.sym: string
Compile frills: Associate string with keysym sym. The intervening resource name keysym.
cannot be omitted.
The format of sym is "(modifiers-)key", where modifiers can be any combination of
ISOLevel3, AppKeypad, Control, NumLock, Shift, Meta, Lock, Mod1, Mod2, Mod3, Mod4, Mod5,
and the abbreviated I, K, C, N, S, M, A, L, 1, 2, 3, 4, 5.
The NumLock, Meta and ISOLevel3 modifiers are usually aliased to whatever modifier the
NumLock key, Meta/Alt keys or ISO Level3 Shift/AltGr keys are being mapped. AppKeypad is a
synthetic modifier mapped to the current application keymap mode state.
The spellings of key can be obtained by using xev(1) command or searching keysym macros
from /usr/X11R6/include/X11/keysymdef.h and omitting the prefix XK_. Alternatively you can
specify key by its hex keysym value (0x0000 - 0xFFFF). Note that the lookup of syms is not
performed in an exact manner; however, the closest match is assured.
string may contain escape values ("\n": newline, "\000": octal number), see RESOURCES in
"man 7 X" for further details.
You can define a range of keysyms in one shot by providing a string with pattern
list/PREFIX/MIDDLE/SUFFIX, where the delimiter `/' should be a character not used by the
strings.
Its usage can be demonstrated by an example:
URxvt.keysym.M-C-0x61: list|\033<M-C-|abc|>
The above line is equivalent to the following three lines:
URxvt.keysym.Meta-Control-0x61: \033<M-C-a>
URxvt.keysym.Meta-Control-0x62: \033<M-C-b>
URxvt.keysym.Meta-Control-0x63: \033<M-C-c>
If string takes the form of "command:STRING", the specified STRING is interpreted and
executed as urxvt's control sequence. For example the following means "change the current
locale to "zh_CN.GBK" when Control-Meta-c is being pressed":
URxvt.keysym.M-C-c: command:\033]701;zh_CN.GBK\007
If string takes the form "perl:STRING", then the specified STRING is passed to the
"on_user_command" perl handler. See the urxvtperl(3) manpage. For example, the selection
extension (activated via “urxvt -pe selection”) listens for “selection:rot13” events:
URxvt.keysym.M-C-c: perl:selection:rot13
Due the the large number of modifier combinations, a defined key mapping will match if at
least the specified identifiers are being set, and no other key mappings with those and
more bits are being defined. That means that defining a key map for "a" will automatically
provide definitions for "Meta-a", "Shift-a" and so on, unless some of those are defined
mappings themselves.
Unfortunately, this will override built-in key mappings. For example if you overwrite the
"Insert" key you will disable urxvt's "Shift-Insert" mapping. To re-enable that, you can
poke "holes" into the user-defined keymap using the "builtin:" replacement:
URxvt.keysym.Insert: <my insert key sequence>
URxvt.keysym.S-Insert: builtin:
The first line defines a mapping for "Insert" and any combination of modifiers. The second
line re-establishes the default mapping for "Shift-Insert".
The following example will map Control-Meta-1 and Control-Meta-2 to the fonts "suxuseuro"
and "9x15bold", so you can have some limited font-switching at runtime:
URxvt.keysym.M-C-1: command:\033]50;suxuseuro\007
URxvt.keysym.M-C-2: command:\033]50;9x15bold\007
Other things are possible, e.g. resizing (see urxvt(7) for more info):
URxvt.keysym.M-C-3: command:\033[8;25;80t
URxvt.keysym.M-C-4: command:\033[8;48;110t
…[/code]
Sinon tu peux regarder st chez suckless, encore en développement actif, mais facile à compiler et à ajouter ses raccourcis (en éditant le fichier config.h) : st.suckless.org/
à toi de voir 
moi je suis rester à rxvt 
).