Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: a20779d6520da7441b3bc16829f21bc39ca6294d
      
https://github.com/WebKit/WebKit/commit/a20779d6520da7441b3bc16829f21bc39ca6294d
  Author: Richard Robinson <[email protected]>
  Date:   2023-11-29 (Wed, 29 Nov 2023)

  Changed paths:
    M Source/WebCore/editing/FrameSelection.cpp
    M Tools/TestWebKitAPI/Tests/ios/KeyboardInputTestsIOS.mm

  Log Message:
  -----------
  HTML notes is showing gray underline for autocorrection
https://bugs.webkit.org/show_bug.cgi?id=265050
rdar://118401826

Reviewed by Wenson Hsieh.

Before 266070@main, the caret color on iOS was almost always blue 
(specifically, always except for
when the caret color was explicitly set by the CSS author). The change was 
needed on macOS because
otherwise some sites would have overlapping carets. The commit changed both 
macOS and iOS to be more
consistent, and more compliant with the CSS spec. However, while this did 
technically improve web
compatibility in iOS, it made things worse than they were before:

- The caret on iOS is now almost always black (it is on macOS too, but it is 
worse on iOS because
the caret was always blue previously)

- It has caused several issues in apps with custom tint colors (like 
https://bugs.webkit.org/show_bug.cgi?id=263123
and several others)

This specific bug is due to the fact that the correct underlines directly use 
the caret color. The
reason the commit that addressed the color of the caret itself on iOS and not 
this color as well
is because the two colors come from different paths, and the fix only fixed the 
actual caret
(insertion point) color.

To fix, and prevent similar bugs, undo the part of 266070@main that changed the 
iOS behavior. This
restores the previous behavior, in addition to fixing this bug.

* Source/WebCore/editing/FrameSelection.cpp:
(WebCore::CaretBase::computeCaretColor):

Canonical link: https://commits.webkit.org/271278@main


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