linux - Russian keyboard layout on French keyboard (debian 8.3)

I have laptop Lenovo Z51-70 with french keyboard (keys and their position, because french keyboard have little differ keys combination).

To use correctly "classic" qwerty-english layout i use "mac layout" (on another i have problem with missing ' on [%ù] button), to use azerty-french layout i use latin9 (legacy, alternative). But with russian biggest problem - i missing

, .

on [/?]/[.,] key (on my keyboard this key have icon [§!]) in Mac-layout or in Legacy layout.
Normally (windows style for normal keyboard) in english this button gives

/?

in russian in gives

,.

but mine in russian mode gives same keys like in english layout.

So: which layout i can use on french keyboard to have all russian keys on it? Or maybe it's possible to edit layout (change what key return)?

Answer

So.. solution how to get [.,] on [!§] key on french AZERTY keyboard with rus(legacy) layout:

via root open file /usr/share/X11/xkb/symbols/ru and add

key  { [       period,       comma  ] };

in section:

xkb_symbols "legacy" {

So finally it will be:

partial alphanumeric_keys
xkb_symbols "legacy" {

    include "ru(common)"
    name[Group1]= "Russian (legacy)";
    key  { [       period,       comma  ] };
};

After reboot french AZERTY keyboard on rus-legacy layout will work like russian/english keyboard on rus-legacy layout.