Omit function variables from merge

common.lua

@@ -1,4 +1,7 @@
+local identifier_pattern
+
 --- replace values recursively in table t according to to_replace ([old table] = new table)
+-- already_replaced is a temporary table to avoid infinite loop & duplicate processing, no need to give it
 local function replace_in_table(t, to_replace, already_replaced)
 	already_replaced = already_replaced or {}
 	already_replaced[t] = true
@@ -56,8 +59,12 @@ common = {
 		for _, m in ipairs(copied_to_replace) do
 			replace_in_table(m, not_modified)
 		end
-		-- replace
+		-- replace in t
 		replace_in_table(t, to_replace)
 	end
 }
+
+package.loaded[...] = common
+identifier_pattern = require((...):gsub("common$", "parser.common")).identifier_pattern
+
 return common