RFR: 4138921: TextLayout handling of empty strings

[Daniel Gredler]

On Fri, 29 Aug 2025 00:14:09 GMT, Phil Race <prr at openjdk.org> wrote:

> > REVIEWER NOTE: Please check the empty-string TextLayout behavior documented in TextLayoutConstructorTest carefully; a badly-behaving empty TextLayout is probably worse than a TextLayout which doesn't allow empty strings...
> 
> I assume you mean are the "expected" behaviours you assigned to all the methods of such a constructed TextLayout reasonable behaviours ?

That's right; about half of the `TextLayout` public API surface area is new to me, so although I was very careful to try to make sure that the behaviors all made sense, I'll feel more comfortable once this part has been checked carefully.

> please create a CSR

No problem, here it is: https://bugs.openjdk.org/browse/JDK-8366563

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PR Comment: https://git.openjdk.org/jdk/pull/26947#issuecomment-3242636667