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-rw-r--r--lualib/lua_util.lua28
1 files changed, 24 insertions, 4 deletions
diff --git a/lualib/lua_util.lua b/lualib/lua_util.lua
index 650ad5db1..a64f8abc9 100644
--- a/lualib/lua_util.lua
+++ b/lualib/lua_util.lua
@@ -755,9 +755,29 @@ local function override_defaults(def, override)
local res = {}
- for k, v in pairs(override) do
- if type(v) == 'table' then
- if def[k] and type(def[k]) == 'table' then
+ -- Allow transparent ucl
+ local pairs_func, def_pairs_func = pairs, pairs
+ local type_func, def_type_func = type, type
+ if type(override[0]) == 'userdata' then
+ pairs_func = function(t)
+ return t:pairs()
+ end
+ type_func = function(t)
+ return t:type()
+ end
+ end
+ if type(def[0]) == 'userdata' then
+ def_pairs_func = function(t)
+ return t:pairs()
+ end
+ def_type_func = function(t)
+ return t:type()
+ end
+ end
+
+ for k, v in pairs_func(override) do
+ if type_func(v) == 'table' then
+ if def[k] and def_type_func(def[k]) == 'table' then
-- Recursively override elements
res[k] = override_defaults(def[k], v)
else
@@ -768,7 +788,7 @@ local function override_defaults(def, override)
end
end
- for k, v in pairs(def) do
+ for k, v in def_pairs_func(def) do
if type(res[k]) == 'nil' then
res[k] = v
end