After some more profiling work I've come to the conclusion that yes,
the hot spot is in
and that after that function, it's quite flat otherwise.
The difference between
ip-text.lua and the number two spot isn't quite as bad as I initially thought,
although it took some post-processing to lump all the function calls together to determine that
(required because Lua can't always know the “name” of a function,
but with the line numbers they can be reconciled).
It's only called about twice as much as the next most used function instead of the nearly 4½ times it appeared earlier.
As far as profiling “Project: Sippy-Cup” is concerned,
I think I'm about as far as I can go at this time.
I did improve the performance with some minor code changes and any more improvement will take significant resources.
So I'm calling it good enough for now.
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