# HG changeset patch
# User Kim Alvefur <zash@zash.se>
# Date 1601155073 -7200
# Node ID ec14d4fce855afb21cd4dbb91c46e6c9800646e3
# Parent  bd13aa89262d141c47ecc3e4bf1bb6d5fb6d040f
util.serialization: Let freeze metamethod return a literal string

Enables custom serialization, such as creating a datatype that
serializes into a variable reference.

diff -r bd13aa89262d -r ec14d4fce855 util/serialization.lua
--- a/util/serialization.lua	Sat Sep 26 18:15:49 2020 +0200
+++ b/util/serialization.lua	Sat Sep 26 23:17:53 2020 +0200
@@ -150,6 +150,10 @@
 
 				if type(fr) == "function" then
 					t = fr(t);
+					if type(t) == "string" then
+						o[l], l = t, l + 1;
+						return l;
+					end
 					if type(tag) == "string" then
 						o[l], l = tag, l + 1;
 					end