Simple questions

[Luis Carvalho <carvalho@...>]

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Hi guys,

I'm kinda new to lua and have been trying it for some time now. Well, I
must say I'm really happy with the results! However, I found some
*problems*, and so I'd like to ask some questions... answers are
appreciated!

- -- First question:

> f = function() return 1,99 end
> x = 2 or f()
> print(x)
2
> x = nil or f()
> print(x)
1
> _,x = _,2 or f()
> print(x)
2
> _,x = _,nil or f()
> print(x)              -- x = 1 !!!
1

Shouldn't be 99?

- -- Second question:

> s = 'just a test'
> print(string.gfind(s, "([%w%p]+)%s+([%w%p]+)$")())    -- ok
a   test
> print(string.gfind(s, "([%w%p]+)%s+([%w%p]+)")())     -- ok
just    a
> print(string.gfind(s, "^([%w%p]+)%s+([%w%p]+)")())    -- returns nil !!!

> s = '^just a test'
> print(string.gfind(s, "^([%w%p]+)%s+([%w%p]+)")())    -- now it works !!!
just    a

Why the caret is being taken *literally*? Shouldn't it be a special char
indicating a regex start anchor?

So far, I have managed to find some workarounds for these situations...
but a better solution would be much more desirable! Thanks in advance.
:)

Regards,
Luis.

- -- 
Mathematicians practice absolute freedom.
                -- Henry Adams

- -- 
Luis Carvalho
Applied Math PhD Student
Brown University
carvalho at dam dot brown dot edu

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