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2015-05-20 8:17 GMT+02:00 Philipp Janda <>:

> I'd like to avoid parsing Lua files of possibly different Lua versions and
> patching their source code.

One could argue that by definition a program with debug hooks in it
is still under development, and changes to its source code are still
to be expected.

What I have learnt from this thread is "return hooks give undefined
results when an expression rather than a variable is being returned".
I think I'll patch it into my local copy of $LUA/doc/manual.html.