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Re: Issue 261: Check for requirements backing test cases, was: Comments on draft-ietf-httpbis-content-disp

From: Adam Barth <ietf@adambarth.com>
Date: Tue, 2 Nov 2010 10:15:13 -0700
Message-ID: <AANLkTi=PUXX-A9h0zSoC+j29uts6SdWx7mmvjrRW=Kei@mail.gmail.com>
To: Julian Reschke <julian.reschke@gmx.de>
Cc: Mark Nottingham <mnot@mnot.net>, httpbis <ietf-http-wg@w3.org>
On Tue, Nov 2, 2010 at 9:53 AM, Julian Reschke <julian.reschke@gmx.de> wrote:
> On 02.11.2010 17:46, Adam Barth wrote:
>> ...
>> While I appreciate the implied complement that browser vendors are
>> good at fixing interoperability and compatibility problems, I think
>> you're giving us too much credit.  For example, my understanding is
>> that there's a bunch of content in Asia that requires the nutty
>> %-decoding user-default-charset handling.  Because a number of
>> browsers have effectively chosen not to compete in this marketplace,
>> they lack this behavior.  Therefore lack of unanimity among browsers
>> doesn't necessarily imply that there isn't existing content that
>> requires the behavior.
>> ...
>
> So none of Safari/Opera/Firefox is competing there?

So, you can go to http://gs.statcounter.com/ and play with the region
selector to compare North America to Asian.  Here's what it looks like
to me:

1) Chrome and IE have greater market share in Asia than they do in
North America, where as Firefox and Safari have less.
2) Safari has much less market share in Asian than in North America.
(Opera has small market share in both markets.)
3) Chrome's market share growth in Asia is coming from largely from IE
rather than from Firefox, whereas in North America, Chrome's market
share growth is coming from both Firefox and IE.

Now, I'm sure there are any explanations for these observations, but
these observations lead me to believe that (1) Safari does not compete
in the Asian market, and (2) Chrome is better at acquiring IE
customers in Asia than Firefox is.

As we all know, web compatibility is one of the top 5 reasons users
decide which browser to use.  It seems entirely likely that the
decision to implement IE-like behavior for the Content-Disposition
header has contributed to Chrome's strong performance in the Asian
market.

> Maybe those sites just gave up on IE and Chrome, and have been sending
> filename* to everybody else for a long time?
>
> It would *really* be useful to get beyond the hearsay and actually get data.

I don't have that data off hand.  We can gather it.  It just takes
time and effort.

Adam
Received on Tuesday, 2 November 2010 17:16:26 GMT

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