On 2014-04-22, 8:09 AM, Henri Sivonen wrote:
We already do not expose MS-DOS encodings other than Cyrillic to the
Web. We still expose them to Firefox extensions in some APIs.
Telemetry shows that usage varies from non-existent to extremely rare
(28 sessions out of 180.82 million sessions for the Western European
DOS code page).
How reliable is our telemetry data here? I'm not really sure how the
measurement works. Is it based on the number of times that we encounter
this encoding per the number of pages loaded in a session? Or is it a
boolean flag indicating whether we've hit the encoding in a given
session? Do we have any reason to believe that the portion of our users
opting in to Telemetry on the release channel correctly represents the
potential demographics who might be viewing pages written in these kinds
of encodings?
Also, what is the status of the support for these encodings in other UAs?
I'm somewhat worried that we might break some Web pages for users who
are not fairly represented in our Telemetry data, and that we may not
hear about this before this change hits the release channel.
Cheers,
Ehsan
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