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style: disable lquote/rquote attributes on the <ms> element

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This commit introduces a MathML preference for the legacy implementation
of the lquote/rquote attributes, and disable it by default. This feature
is not implemented in Chromium or WebKit, not part of MathML Core and
Firefox's implementation has issues (e.g. bugs 787215 and 1108608).

Differential Revision: https://phabricator.services.mozilla.com/D158479
This commit is contained in:
Frederic Wang 2022-10-08 11:37:32 +00:00 • committed by Martin Robinson
parent 444dc23e00
commit d4742aefb9
1 changed files with 6 additions and 1 deletions
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7
components/style/gecko/media_features.rs
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@ -585,7 +585,7 @@ macro_rules! bool_pref_feature {
/// to support new types in these entries and (2) ensuring that either
/// nsPresContext::MediaFeatureValuesChanged is called when the value that
/// would be returned by the evaluator function could change.
pub static MEDIA_FEATURES: [QueryFeatureDescription; 61] = [
pub static MEDIA_FEATURES: [QueryFeatureDescription; 62] = [
feature!(
atom!("width"),
AllowsRanges::Yes,
@ -885,4 +885,9 @@ pub static MEDIA_FEATURES: [QueryFeatureDescription; 61] = [
atom!("-moz-mathml-core-maction-and-semantics"),
"mathml.legacy_maction_and_semantics_implementations.disabled"
),
// media query for MathML Core's implementation of ms
bool_pref_feature!(
atom!("-moz-mathml-core-ms"),
"mathml.ms_lquote_rquote_attributes.disabled"
),
];