On Tue, 18 May 2021 15:55:09 GMT, Phil Race <p...@openjdk.org> wrote:

> See the bug report for lots of explanation.
> The short version (not that short) is that Swing adds a new line char to 
> editable TextComponents
> It used to work because harfbuzz asked CoreText which mapped it to an 
> invisible glyph
> Now harfbuzz does its own processing of AAT fonts it is different.
> Harfbuzz looks up the mapping for this but there is none so it gets a missing 
> glyph.
> 
> Solution: Since HB now does AAT processing we can dispense with all the 
> special handling of that case
> and core text and just treat AAT fonts like OT fonts. 
> This means its gets the same mapping we get when not using Layout.
> 
> And the test passes on all platforms .. not just macOS ..

This pull request has now been integrated.

Changeset: 005d8a7f
Author:    Phil Race <p...@openjdk.org>
URL:       
https://git.openjdk.java.net/jdk/commit/005d8a7fca8b4d9519d2bde0a7cdbbece1cd3981
Stats:     1425 lines in 9 files changed: 65 ins; 1352 del; 8 mod

8256372: [macos] Unexpected symbol was displayed on JTextField with Monospaced 
font

Reviewed-by: erikj, serb

-------------

PR: https://git.openjdk.java.net/jdk/pull/4097

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