Re: Locale problem

[David Jones <drj@...>]

On Jan 15, 2004, at 19:00, Stoil Todorov wrote:

> Tank You, guys
> But I don't want to change all local settings:-(
> I want to change only digital sign - I want to be sure
>  that digital sign will be point during executing Lua
> code...
> Is it possible?

I think so:

os.setlocale("C", "numeric")

or you can do it from C:

setlocale(LC_NUMERIC, "C")

Technically this also changes some other aspects of number formatting, 
such as the thousands grouping character.  See the reference for the C 
function localeconv.  Standard C does not use the other aspects of 
number formatting, but your host application or the operating system 
might.

Note that os.setlocale can be used to retrieve the current locale 
settings as well.  So if you want to switch between the current locale 
and C do something like this:

numeric_locale = os.setlocale(nil, 'numeric')

os.setlocale('pl_PL', 'numeric')

-- do stuff using comma as the decimal point (at least on Mac OS X 
10.3).

-- restore the old locale setting

os.setlocale(numeric_locale, 'numeric')

I have to say that this feature is not well documented, but obvious 
enough if you know the C side of things.

David Jones