Re: [Bison-Announce] Bison 3.5.90 released [beta]

[Frank Heckenbach]

Akim Demaille wrote:

> I guess it would be ok to just define it if N_ is not yet
> #defined.

I'd appreciate that, one less line of boilerplate. :)

> > it seems I have to define both
> > YYENABLE_NLS and ENABLE_NLS. The former is mentioned in the manual
> > (but only in conjunction with autoblah), the latter not at all.
> > 
> > So if I got it correctly now, this seems to be the minimum required
> > for i18n, apart from the bindtextdomain call. Is that correct?
> > 
> > %define parse.error detailed
> > %{
> > #define YYENABLE_NLS 1
> > #define ENABLE_NLS 1
> > #define N_
> > static auto _ (const char *s) { return dgettext ("mydomain", s); }
> > %}
> 
> I don't think this is the right approach.  I think you are trying
> to exploit the fact that the skeleton is actually already having
> support to translate its own messages ("syntax error, expected...").
>
> Rather I had something like the attachement in mind.  I am very
> afraid about really installing this in the source tree, because I
> expect tons of portability issues here: the examples are meant to
> be self-contained, independent of bison's build, so I cannot use
> the same tricks to be portable.
> 
> But I agree it would be better to actually demonstrate the whole
> process in bistromathic.  I'll see what I can do.

I'm not sure I follow you here. I think what I do is rather close to
what you suggest here. Maybe there was some confusion because I
hadn't mentioned the steps that were unproblematic (or well-known)
to me already. So for completeness, I had this already (with my own
domain, of course):

>   # include <libintl.h>
>   setlocale (LC_ALL, "");
>   bindtextdomain ("bistromathic", LOCALEDIR);

But don't you also need:

  bindtextdomain ("bison-runtime", BISON_LOCALEDIR);

Or is it there already? I can't seem to find it. Anyway, I had put
that in my code, and FWIW I didn't need autoblah and m4 to get
BISON_LOCALEDIR, I just use the following my Makefile:

  -DBISON_LOCALEDIR='"$(shell $(BISON) $(BISON_FLAGS) --print-localedir)"'

So the only thing missing before it worked for me was:

  #define YYENABLE_NLS 1
  #define ENABLE_NLS 1

I suppose they're normally set by autoblah, so I need to do this
manually. But maybe I should rather set them on the command-line
than in the source!?

Anyway, not a big deal, though I think it should at least be briefly
mentioned, unless you argue using gettext without autoblah is a
non-supported mode of operation (which I've been doing in other
projects for a long time and it seems to be working well, and
doesn't require defining ENABLE_NLS).

BTW:

>   textdomain ("bistromathic");
>   # define _(Msgid)  gettext (Msgid)

This works for an example (or a "main" program), but I think the
more general approach (as required e.g. in a library containing a
parser, where the main program might use its own domain) would be
no "textdomain" call and rather:

  #define _(Msgid) dgettext ("bistromathic", Msgid)

PS:

>     examples: bistromathic: demontrate internationalization

"demonstrate" ;)

Regards,
Frank