phorge/resources/celerity
Andre Klapper e38f545743 Remove obsolete IE9 filter CSS syntax
Summary:
IE5.5 to IE8 released 03/2009 supported the `filter: progid:DXImageTransform.Microsoft.BasicImage()` syntax.
(IE8 and IE9 supported `-ms-filter` which was deprecated in IE9 and is unsupported since IE10 released 09/2012.)
See
* https://learn.microsoft.com/en-us/previous-versions/windows/internet-explorer/ie-developer/platform-apis/ms532847(v=vs.85)
* https://learn.microsoft.com/en-us/previous-versions/windows/internet-explorer/ie-developer/platform-apis/ms532967(v=vs.85)
* https://learn.microsoft.com/en-us/previous-versions/ms530752(v=vs.85)
* https://stackoverflow.com/a/5705449

`filter` is a valid standard CSS3 property unrelated to IE's obsolete `filter: progid: DXImageTransform.Microsoft.BasicImage()` syntax. Thus modern browsers throw errors in the console to be avoided by removing this old syntax.

Test Plan: Read the links above, realize it's been 16 years, and agree with me.

Reviewers: O1 Blessed Committers, valerio.bozzolan

Reviewed By: O1 Blessed Committers, valerio.bozzolan

Subscribers: tobiaswiese, valerio.bozzolan, Matthew, Cigaryno

Differential Revision: https://we.phorge.it/D25929
2025-03-28 06:50:49 +01:00
..
map.php Remove obsolete IE9 filter CSS syntax 2025-03-28 06:50:49 +01:00
packages.php Make inline "ContentState" a client object, and track "hasSuggestion" on it 2021-03-29 09:00:23 -07:00