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Am 09.06.2011 um 18:24 schrieb Javier Guerra Giraldez:

> On Thu, Jun 9, 2011 at 11:15 AM, Marc Balmer <> wrote:
>>> the other 128 codes are undefined, even if there are some 'codepages'
>>> and such.  but they're not ASCII
>> If you use codepages, the uppper 128 codes are well defined (and yes, they are not 7 bit ASCII).  I suggest to use Unicode internally and iconv to convert to the output medium charset.
> my point (and i hope i'm not digressing too far from the original
> point).  is that if a library specifie: "this parameter is UTF-8",
> then you can say: "ok, i'll use ASCII", and you're safe... as long as
> you use ONLY ASCII and not any codepage.   IOW: it's safe and correct
> to say "use ASCII or UTF-8".  and nobody promises anything about
> codepages.
> IMHO, using (or even suggesting to use) codepages is going backwards.
> if you need anything more than plain 7-bit ASCII (and who doesn't?)
> then just use any decent editor to put UTF8 in the strings.   yes,
> unfortunately that means you have to be extra careful with the
> standard string library, especially about counting characters.

Right.  There are free libs to calc the visible length of a UTF-8 string, fwiw.