Thread:Extension talk:Scribunto/attempt to index field 'text' (a nil value) in luasandbox/reply (20)

Well, yes. It is helpful when you want to avoid crashing the script by calling undefined function or function in udefined table, but I think that the problem here is that the  doesn't seem to be implemented, as OP probably expected it to be.

I'm working with the standalone version of REL1_21 snapshot (b5015a2) on a test wiki, and the  also doesn't seem to be implemented (actually couldn't find any file that would contain it). Well, there are only few functions that I use now (basically just  and  ), so it's easy to create a temporary patch, like: but it requires writing own or finding good implementations of used functions, and putting them to mentioned module.