Allow passing environment table to import function

ldoc.lua

@@ -257,8 +257,21 @@ local ldoc_contents = {
 }
 
 if args.UNSAFE_NO_SANDBOX then
-	function ldoc.import(t)
+	local select_locals = {
-		return _G[t]
+		["args"] = args,
+	}
+
+	function ldoc.import(t, env)
+		local retval = select_locals[t]
+		if not retval then
+			retval = _G[t]
+		end
+
+		if env then
+			env[t] = retval
+		end
+
+		return retval
 	end
 
 	table.insert(ldoc_contents, 'import')