Re: [PATCH 2/2] send-email: rfc2047-quote subject lines with non-ascii characters

[Robin Rosenberg <robin.rosenberg.lists@dewire.com>]

Den Saturday 29 March 2008 09.53.04 skrev Jeff King:
> On Sat, Mar 29, 2008 at 09:44:55AM +0100, Robin Rosenberg wrote:
> > > OK. Do you have an example function that guesses with high probability
> > > whether a string is utf-8? If there are non-ascii characters but we
> > > _don't_ guess utf-8, what should we do?
> >
> > I guess the best bet is to assume the locale. Btw, is the encoding header
> > from the commit (when present) completely lost? (not that it can be
> > trusted anyway).
>
> What do you mean by "assume the locale"?  Is there a portable way to say
> "this is the encoding of the locale the user has chosen?" On my system I
> set LANG=en_US, and behind-the-scenes magic chooses utf-8 versus
> iso8859-1.

The environment variables are only part of the story. There is a langinfo API 
for this. See I18N::Langinfo(3pm) that knows about those and something else.

# perl -e 'require I18N::Langinfo; I18N::Langinfo->import(qw(langinfo 
CODESET)); $codeset = langinfo(CODESET()); print "My codeset=".
$codeset."\n";'
My codeset=ISO-8859-15

-- robin