WordPress no longer supports many old old browsers: https://make.wordpress.org/core/2017/04/23/target-browser-coverage/
This also removes alot of no longer necessary CSS. It served us well, but we are never getting back together with IE8,9,10.
So, in the (paraphrased) words of Taylor Swift:
I remember when we dropped support the first time
Saying, "This is it, I've had enough, " 'cause like
We hadn't seen many users in a month
When you said you needed flexbox. (What?)
Then you postMessage again and say
"IE8, I miss you and I swear I'm gonna change, trust me."
Remember how that lasted for a day?
I say, "I hate the box model, " we break up, you call me, "I love css-grids."
Ooh, we called it off again last night
But ooh, this time I'm telling you, I'm telling you
We are never ever ever supporting IE 8,9,10,
We are never ever ever supporting IE 8,9,10,
You go talk to EDGE, talk to my FIREFOX, talk to CHROME
But we are never ever ever ever getting back together
Like, ever...
Fixes#37651.
Props stunnedbeast, netweb, jorbin.
Built from https://develop.svn.wordpress.org/trunk@41062
git-svn-id: http://core.svn.wordpress.org/trunk@40912 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Rejoice, for your admins will feel more native to your surrounding computing environment and likely load faster, especially when offline, as they no longer have to talk to The Google Overlord.
At the time of introduction in 3.8, there were not good system fonts common to all platforms at the time. In the years since, Windows, Android, OS X, iOS, Firefox OS, and various flavors of Linux have all gotten their own (good) system UI fonts.
There will definitely be visual bugs, mainly around alignment and spacing; these should be documented and reported on the ticket and fixed more atomically so that our current and future selves have a better understanding of what happened and why.
The style remains registered, as it is almost certainly in use by themes and plugins.
props mattmiklic.
see #36753.
Built from https://develop.svn.wordpress.org/trunk@37361
git-svn-id: http://core.svn.wordpress.org/trunk@37327 1a063a9b-81f0-0310-95a4-ce76da25c4cd
CSSJanus (introduced in [26107]), we had a great time with you, but sadly you don't like our fancy CSS.
RTLCSS is a framework for converting CSS from LTR to RTL, same as CSSJanus, with support for more CSS properties like `transform`, `transition` or multiple box and text shadows.
Changes:
* devDependencies: Remove `grunt-cssjanus`, add `grunt-rtlcss`.
* RTLCSS uses `/* rtl:ignore */` to ignore a rule, switch existing `/* @noflip */` to the new directive.
* RTLCSS supports the `transform` property, means we can remove some ignore rules.
* RTLCSS supports string maps for custom replace rules. This commit includes a rule `import-rtl-stylesheet` which replaces ".css" with "-rtl.css" in URLs.
Notes for core development:
* The file generation task is still `grunt rtl`.
* If you have used `grunt cssjanus` before, use `grunt rtlcss` now.
* Remember the new directive `/* rtl:ignore */`.
fixes#31332.
Build: https://build.trac.wordpress.org/changeset/31554
Built from https://develop.svn.wordpress.org/trunk@31573
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We'll be using it for two distinct tasks:
* Core CSS files will keep prefixes. `grunt autoprefixer:core` will update files directly in src/ as a pre-commit step, rather than doing it on build.
* Color CSS files will receive prefixes when they are built.
This commit:
* Adds prefixes we were missing to core CSS.
* Removes prefixes that we no longer need from core CSS.
* Removes all prefixes from colors CSS.
props ocean90.
fixes#27078.
Built from https://develop.svn.wordpress.org/trunk@27174
git-svn-id: http://core.svn.wordpress.org/trunk@27038 1a063a9b-81f0-0310-95a4-ce76da25c4cd
RTL files are now created on build for core CSS files. These files replace the LTR file completely, rather than being in addition to the existing LTR file.
Benefits:
* For the user: less CSS is served in RTL, less HTTP requests on the frontend, and less work for the browser.
* For the core developer: Let the tools do the work.
Notes for core development:
* The file generation task is `grunt rtl`.
* `grunt watch` now handles generating RTL files in /build when a CSS file in /src is saved.
* /src is now locked to LTR. RTL testing must occur via /build. When attempting to run an RTL text direction with /src, an admin notice will display.
Expect RTL bugs. Please report them.
props yoavf.
see #24977.
Built from https://develop.svn.wordpress.org/trunk@26107
git-svn-id: http://core.svn.wordpress.org/trunk@26022 1a063a9b-81f0-0310-95a4-ce76da25c4cd
