[xkb] swap afnor spacebar for bépo's

config/xkb/symbols/custom

@@ -21,6 +21,9 @@ xkb_symbols "fr_afnor" {
 
     key <AD04>	{[           r,              R,      registered,        copyright ]}; // r R ® ©
 
-    key <AB01>  { [w, W,    less,    lessthanequal ] }; // w W < ≤
-    key <AB02>  { [x, X, greater, greaterthanequal ] }; // x X > ≥
+    key <AB01>	{[           w,              W,            less,    lessthanequal ]}; // w W < ≤
+    key <AB02>	{[           x,              X,         greater, greaterthanequal ]}; // x X > ≥
+
+    // Space bar borrowed from bépo
+    key <SPCE>	{[       space,   nobreakspace,      underscore,            U202F ]}; // ␣ (espace insécable) _ (espace insécable fin)
 };