Move setup of selection() to selection.c

The function selection() is now registered in the Lua global table from
selection.c instead of in luaa.c. This "feels cleaner" to me and is
preparatory for later changes.

Signed-off-by: Uli Schlachter <psychon@znc.in>

luaa.c

@@ -385,9 +385,6 @@ luaA_fixups(lua_State *L)
     /* replace type */
     lua_pushcfunction(L, luaAe_type);
     lua_setglobal(L, "type");
-    /* set selection */
-    lua_pushcfunction(L, luaA_selection_get);
-    lua_setglobal(L, "selection");
 }
 
 static const char *
@@ -1043,6 +1040,9 @@ luaA_init(xdgHandle* xdg, string_array_t *searchpath)
     /* Export selection watcher */
     selection_watcher_class_setup(L);
 
+    /* Setup the selection interface */
+    selection_setup(L);
+
     /* add Lua search paths */
     lua_getglobal(L, "package");
     if (LUA_TTABLE != lua_type(L, 1))

selection.c

@@ -49,7 +49,7 @@ static xcb_window_t selection_window = XCB_NONE;
  * \luastack
  * \lreturn A string with the current X selection buffer.
  */
-int
+static int
 luaA_selection_get(lua_State *L)
 {
     if(selection_window == XCB_NONE)
@@ -132,4 +132,11 @@ luaA_selection_get(lua_State *L)
     return 0;
 }
 
+void
+selection_setup(lua_State *L)
+{
+    lua_pushcfunction(L, luaA_selection_get);
+    lua_setglobal(L, "selection");
+}
+
 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80

selection.h

@@ -24,7 +24,7 @@
 
 #include <lua.h>
 
-int luaA_selection_get(lua_State *);
+void selection_setup(lua_State *);
 
 #endif
 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80