RFR: 8353230: Emoji rendering regression after JDK-8208377

[Phil Race]

On Thu, 24 Apr 2025 03:04:36 GMT, Phil Race <prr at openjdk.org> wrote:

>> We had similar emoji-related regressions at JetBrains. Although our font-related code diverged from OpenJDK a bit, porting this patch seems to resolve them too. I am not an OpenJDK reviewer, but LGTM nevertheless.
>
>> @YaaZ Thanks for the information!
>> 
>> @prrace Have you had a chance to look at this PR?
> 
> It passed all the testing I did. I still need to look hard at the changes.

> @prrace Please don't approve yet. I was able to fix the code conflicts caused by PR #23665, but it looks like the logic does not layer nicely as there is now a test failure on macOS after the merge. I'm having a look and will let you know what I find.

And indeed the tests just finished and a test (not the new one, a previous one : IgnoredWhitespaceTest.java) failed on macOS x64 and ARM ..

java.lang.RuntimeException: for text '\t\t\t\t\tXXXXX' with font java.awt.Font[family=Dialog,name=Dialog,style=plain,size=40]: java.awt.Rectangle[x=300,y=271,width=123,height=28] != java.awt.Rectangle[x=365,y=271,width=123,height=28]
	at IgnoredWhitespaceTest.assertEqual(IgnoredWhitespaceTest.java:127)
	at IgnoredWhitespaceTest.test(IgnoredWhitespaceTest.java:103)
	at IgnoredWhitespaceTest.test(IgnoredWhitespaceTest.java:69)
	at IgnoredWhitespaceTest.main(IgnoredWhitespaceTest.java:49)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
	at java.base/java.lang.reflect.Method.invoke(Method.java:565)
	at com.sun.javatest.regtest.agent.MainWrapper$MainTask.run(MainWrapper.java:138)
	at java.base/java.lang.Thread.run(Thread.java:1447)

JavaTest Message: Test threw exception: java.lang.RuntimeException: for text '\t\t\t\t\tXXXXX' with font java.awt.Font[family=Dialog,name=Dialog,style=plain,size=40]: java.awt.Rectangle[x=300,y=271,width=123,height=28] != java.awt.Rectangle[x=365,y=271,width=123,height=28]
JavaTest Message: shutting down test

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PR Comment: https://git.openjdk.org/jdk/pull/24412#issuecomment-2910773893