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builtin: Fix print
crashing on nil "holes".
The engine implementation of `print` packs the varargs into a table and passes the table directly to `table.concat`. If you pass any value not supported by `table.concat` (particularly `nil`), the server crashes. This is unexpected behavior, as `print` is supposed to be able to work with anything. This patch changes the implementation so it first converts all arguments using `tostring`, which fixes the issue and makes the custom `print` function compatible with the stock Lua behavior.
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@ -12,7 +12,11 @@ if core.print then
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-- Override native print and use
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-- terminal if that's turned on
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function print(...)
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core_print(table.concat({...}, "\t"))
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local n, t = select("#", ...), { ... }
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for i = 1, n do
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t[i] = tostring(t[i])
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end
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core_print(table.concat(t, "\t"))
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end
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core.print = nil -- don't pollute our namespace
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end
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