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authorMichael Howell <michael@notriddle.com>2023-03-23 14:25:43 -0700
committerMichael Howell <michael@notriddle.com>2023-03-23 14:25:43 -0700
commit95ef91c573c7c49d620688e81ffe1c97fd22501c (patch)
tree3bd59236f646ff7de038778cf837c8d26f961ee0 /compiler/rustc_codegen_llvm/src
parentba3d6055adf0a93800d79ea2281222df81b44b59 (diff)
downloadrust-95ef91c573c7c49d620688e81ffe1c97fd22501c.tar.gz
rust-95ef91c573c7c49d620688e81ffe1c97fd22501c.zip
rustdoc: remove old `content` hack for theme switching
This is based on the compatibility data for `window.matchMedia` and
`MediaQueryList`'s `EventTarget` implementation.

https://developer.mozilla.org/en-US/docs/Web/API/MediaQueryList#browser_compatibility

https://developer.mozilla.org/en-US/docs/Web/API/Window/matchMedia#browser_compatibility

  * EventTarget would require us to drop support for all Chrome
    versions before 39. However, we already require Chrome 49,
    because rustdoc requires [CSS variables].
  * EventTarget would also limit us to Firefox 55, but since #106502
    rustdoc only supports Firefox > 68.
  * EventTarget limits us to Mobile Safari version 14, but #102404
    shows that our CSS is broken in Safari versions before 15.5.

[CSS variables]: https://developer.mozilla.org/en-US/docs/Web/CSS/--*#browser_compatibility
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