# HG changeset patch
# User Kim Alvefur <zash@zash.se>
# Date 1427301569 -3600
# Node ID 0fcd63818aa1ce262ab2f5bb9697aa2c4cec5524
# Parent  36eb0dbea7baaff247e724fad2aa86114ff235f9
mod_storage_gdbm: Make write operation delete data when passed 'nil' as value instead of storing a literal "nil" string

diff -r 36eb0dbea7ba -r 0fcd63818aa1 mod_storage_gdbm/mod_storage_gdbm.lua
--- a/mod_storage_gdbm/mod_storage_gdbm.lua	Wed Mar 25 17:37:52 2015 +0100
+++ b/mod_storage_gdbm/mod_storage_gdbm.lua	Wed Mar 25 17:39:29 2015 +0100
@@ -42,7 +42,13 @@
 local keyval_mt = { __index = keyval, suffix = ".db" };
 
 function keyval:set(user, value)
-	local ok, err = g_set(self._db, user or "@", serialize(value));
+	if type(value) == "table" and next(value) == nil then
+		value = nil;
+	end
+	if value ~= nil then
+		value = serialize(value);
+	end
+	local ok, err = (value and g_set or g_del)(self._db, user or "@", value);
 	if not ok then return nil, err; end
 	return true;
 end