Re: reinstating "in env do ... end"

[Roberto Ierusalimschy <roberto@...>]

> I realise this is "their problem", but I think that in many people's
> minds 'in env do' implies a lot more magic than the sugar is actually
> providing, and explicit assigning to _ENV as a local variable is more
> likely to force them to see how it actually works rather than how they
> hoped it would work. It may be ugly, but it's less confusing.
> 
> In particular I remember when it was first mooted it seemed like quite
> a few people assumed at least one of the following, and were surprised
> if not frustrated when it turned out to be wrong:
> 
> - Bad assumption 1: [...]
> 
> - Bad assumption 2: [...]

Many thanks for this summary.

Besides this problem of bad assumptions, _ENV is also more flexible.
(For instance, it provides an obvious way to access the current
environment.)

(But I agree that it is not particularly pretty...)

-- Roberto