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-rw-r--r--util/debug.lua1
1 files changed, 1 insertions, 0 deletions
diff --git a/util/debug.lua b/util/debug.lua
index 00f476d0..e736d0dd 100644
--- a/util/debug.lua
+++ b/util/debug.lua
@@ -47,6 +47,7 @@ local function get_upvalues_table(func)
for upvalue_num = 1, math.huge do
local name, value = debug.getupvalue(func, upvalue_num);
if not name then break; end
+ if name == "" then name = ("[%d]"):format(upvalue_num); end
table.insert(upvalues, { name = name, value = value });
end
end