util.format: Restore "freeze" serialization behavior in logging
This was implied with the "debug" preset and does nice things like turn
util.set objects into "set{a,b,c}" instead of the quite verbose thing
you get otherwise.
--- a/util/format.lua Sun Mar 26 00:18:05 2023 +0100
+++ b/util/format.lua Sun Mar 26 00:33:20 2023 +0100
@@ -15,6 +15,7 @@
fallback = function(v, why)
return "_[[" .. (why or tostring(v)) .. "]] ";
end;
+ freeze = true;
fatal = false;
maxdepth = 5;
});