I just removed the nightly / beta restriction in bug 1496961, so unless
there's any regression this should ride the trains in 64.
Cheers,
-- Emilio
On 7/23/18 2:15 AM, Emilio Cobos Álvarez wrote:
Hi,
In bug 1477553 I intend to disable the ability for content to specify
display: -moz-box and -moz-inline-box, which will be consistent with
what we did for the rest of -moz- prefixed values in bug 1288572.
We have a use counter for this in [1], which is somewhat high. This
could however be a bit misleading, since people tend to confuse these
values (XUL flexbox) with the equivalent -webkit-prefixed ones (legacy
HTML flexbox). This confusion caused enough issues for us that we had to
add a hack in the style engine to ignore -moz- prefixed values when the
-webkit- prefixed value is specified before-hand [2], see bug 1407701 &
friends.
Given we don't / can't collect URLs from pages where the use counter is
hit, we can't asses whether the pages where it's hit are using it
intentionally or just by adding prefixes. Though my gut feeling is that
it's mostly the later...
In any case, given that, for now I plan to just hide them on Nightly and
early beta, before doing it for the release channel in a couple releases
if everything goes well and there's no reported breakage.
This will all be behind the pref:
layout.css.xul-box-display-values.content.enabled
Let me know if there's any concern with this, and please file bugs
blocking that one if you find broken stuff.
Thanks!
-- Emilio
[1]:
https://georgf.github.io/usecounters/index.html#kind=page=DEPRECATED=beta=62
[2]:
https://searchfox.org/mozilla-central/rev/ad36eff63e208b37bc9441b91b7cea7291d82890/servo/components/style/properties/declaration_block.rs#519
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