[Webkit-unassigned] [Bug 257743] New: It should be possible to slant glyphs to the left for italics/oblique for RTL script users

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=257743

            Bug ID: 257743
           Summary: It should be possible to slant glyphs to the left for
                    italics/oblique for RTL script users
           Product: WebKit
           Version: Safari 16
          Hardware: Unspecified
                OS: macOS 12
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Text
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ishida at w3.org
                CC: mmaxfield at apple.com

Created attachment 466600

  --> https://bugs.webkit.org/attachment.cgi?id=466600&action=review

Left-leaning N'Ko text.

This issue is applicable to Arabic, Persian, Hebrew, & N'Ko, and more scripts & languages.

Some right-to-left writing systems italicise by sloping the letters to the left (ie. in the reading direction).

Attached is an example from the N'Ko Kigelia font. The creators of the Kigelia font conducted research with the users and standardisation body for the N'Ko script to establish their preference, and this was the requested default styling for N'Ko italics.

Some Hebrew authors also prefer to slope in the direction of reading, although this tends to be subject to author preference.

Also attached is a photo of an Arabic newspaper letterhead. See the oblique text in the middle line.


In the absence of an italic font, one should be able to produce oblique text that leans like this using font-style:oblique -14deg;, but this doesn't work for WebKit and Blink browsers (but it does work on Gecko).

Test: https://github.com/w3c/character_phrase_tests/issues/56

Please enable negative settings for font-style, so that these international users can create text on the web as they do elsewhere.



[This gap is being tracked at https://github.com/w3c/afrlreq/issues/17]

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