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Date: Mon, 07 Aug 2006 16:55:26 -0400
From: Alex Sink <Alex.Sink@Vishay.com>
In-reply-to: <e498c1660608071306h5cd3621at88c124634be968e6@mail.gmail.com>
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Subject: RE: [users@httpd] Content Negotiation - English zh-TW and Chinese
 zh-CN

We have Simplified Chinese language pages that we wish to serve only to our
mainland Chinese customers, and have all other variants of Chinese language
(example: zh-TW or zh-sg) tags default to English.

Or put differently, I want zh* language-tags (from:
http://www.iana.org/assignments/language-tags) to receive English pages and
only zh-CN to receive our Simplified Chinese pages.

I did try the fallback as well, but the plain "zh" tag among others would
still default to Chinese pages for some reason -- even with the:
"ForceLanguagePriority Prefer Fallback" option.  If I try the 'zh-sg' tag it
defaults to the zh-CH page.

My theory fell along the same lines as the other problem, where it falls
back to the shortest letter code, zh and then picks the first alphabetical
choice zh-CH and it never gets to the last step in the apache content
negotiation where language priority would take effect.

I am unsure if there is a workaround, but this seems like it might have a
simple fix similar to what you suggested.  I have been unable to figure it
out thus far and would appreciate any additional help.

Thank you,
Alex Sink

-----Original Message-----
From: jslive@gmail.com [mailto:jslive@gmail.com]On Behalf Of Joshua
Slive
Sent: Monday, August 07, 2006 4:06 PM
To: users@httpd.apache.org
Subject: Re: [users@httpd] Content Negotiation - English zh-TW and
Chinese zh-CN


On 8/7/06, Alex Sink <Alex.Sink@vishay.com> wrote:
> Hi,
>
> Our website correctly handles several languages with content negotiation,
> but we wish to direct only our Chinese customers to our simplified Chinese
> pages, and have all other Chinese language-tags return English pages.
Does
> anyone know how to make our Chinese pages only show up for zh-CN browsers?
>
>   After reading the Apache manual and the relevant articles, I became
> convinced that modifying the following lines would produce the intended
> effect:
>
> AddLanguage zh-CN .zh-CN
> AddLanguage zh-TW .en   (was: AddLanguage zh-TW .zh-TW -- pages that are
in
> development)
>
> AddLanguage zh .en (was added)
>
> This does work for the Chinese language tag variants, but it completely
> breaks our standard English content-negotiation, so we now get German
(.de)
> pages where we should be getting English pages.(And English is higher in
the
> language preferences, so I can only guess it reaches rule 8 of content
> negotiation, and picks alphabetically)
>
> I got the same results on versions 1.3.24 and 2.0.52 of apache(1.3.24
being
> our live machine), and would appreciate any help on getting our Simplified
> Chinese pages to the appropriate audience and English pages to other
Chinese
> viewers.

Your problem report is not all that clear.  My understanding is that
you want browsers who send zh-CN in their Accept-Language to get pages
with the .zh-CN extension, but you want browsers who send zh-TW to get
pages with the .en extension.  This could be accomplished by marking
the .en pages with two different languages, but I don't believe apache
supports that.

I see two ways to handle this:

1. create a duplicate copy (or even better, a symlink of) the .en page
with the .zh-TW extension and use the standard
AddLanguage zh-TW .zh-TW
config.  You'd be lying to the clients about the language, but that
shouldn't be a big deal.

2. Eliminate all references to zh-TW in your config and use
LanguagePriority Prefer Fallback (available only in 2.x)
(and make sure en is high up in your LanguagePriority)

Joshua.

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