From c07d15cf71f962a64aa93cdf29d5fcf592a7548e Mon Sep 17 00:00:00 2001
From: Matthew Wild <mwild1@gmail.com>
Date: Sun, 11 Oct 2020 20:25:32 +0100
Subject: util.startup: Handle missing nparams field from debug info (not
present in 5.1)
---
util/startup.lua | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/util/startup.lua b/util/startup.lua
index 358c491f..27420c57 100644
--- a/util/startup.lua
+++ b/util/startup.lua
@@ -198,11 +198,12 @@ function startup.set_function_metatable()
end
function mt.__tostring(f)
local info = debug.getinfo(f, "Su");
- for i = 1, info.nparams do
+ local n_params = info.nparams or 0;
+ for i = 1, n_params do
info[i] = debug.getlocal(f, i);
end
if info.isvararg then
- info[info.nparams+1] = "...";
+ info[n_params+1] = "...";
end
return ("function<%s:%d>(%s)"):format(info.short_src:match("[^\\/]*$"), info.linedefined, table.concat(info, ", "));
end
--
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