[Webkit-unassigned] [Bug 214626] New: REGRESSION(r205826): narrowNoBreakSpace (U+202F) has zero width, regardless of font

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=214626

            Bug ID: 214626
           Summary: REGRESSION(r205826): narrowNoBreakSpace (U+202F) has
                    zero width, regardless of font
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Text
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: mmaxfield at apple.com
                CC: mmaxfield at apple.com

>From static void overrideControlCharacters() in Font.cpp:

overwriteCodePoint(narrowNoBreakSpace, zeroWidthSpace);

This is bogus.

Also, this is becoming much more prominent now because a lot of the French unit formatting data in CLDR - and hence in e.g. NSMeasurementFormatter - uses 202F between numeric value and unit, e.g. "37 km"

It works in native content on macOS, and in all other browsers on macOS, but not in WebKit.

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