Re: [ANN] Lua 5.3.0 (alpha) now available

[Roberto Ierusalimschy <roberto@...>]

> More inscrutable to me is why f must be positive.

It does not seem a hard restriction, and it avoids several nasty cases.
(For instance, due to wrap arounds, the source could overlap the
destination in unespected ways, and even on both ends...)

-- Roberto