263562 - Could we have a preference to list vendor prefixes that we know we don't support

Status: NEW

(Core :: CSS Parsing and Computation, enhancement)

Description

[timeless]

I don't care about mso- prefixes atm, i'd really like to be able to ignore:

Error: Unknown property 'mso-fareast-font-family'.  Declaration dropped.
Source File: imap://timeless@localhost:143/fetch%3EUID%3E/INBOX%3E302245
Line: 0
Error: Unknown property 'mso-ansi-language'.  Declaration dropped.
Source File: imap://timeless@localhost:143/fetch%3EUID%3E/INBOX%3E302245
Line: 0
...

ui requirements: none
implementation format: preference (i'll accept dead update, but live update
would be nice) (i'd accept an env var, but that's fairly silly)
syntax: comma delimited list (i'll accept any other syntax, but comma delim
seems fairly reasonable)

Comment 1

[David Baron :dbaron: (⌚️UTC-5, no longer working on Mozilla)]

Not sure about a preference -- we could just ignore everything starting with -
or _ other than -moz, plus mso-.

Comment 2

[David Baron :dbaron: (⌚️UTC-5, no longer working on Mozilla)]

er, other than -moz-

Comment 3

[timeless]

the reason for a preference is so that i can choose to complain/recognize when a
site is trying to rely on those silly properties (and conveniently copy
jsconsole output to a report).

Comment 4

[zodiac1978]

It would be great if we can have a UI for that for the console. Something like "Hide all warnings about wrong vendor prefix". This would be a huge benefit for us web developers to find the *real* bugs in our pages.