RFR: 8343110: Add getChars(int, int, char[], int) to CharSequence and CharBuffer [v5]

[Markus KARG]

On Wed, 16 Apr 2025 16:29:23 GMT, Jaikiran Pai <jpai at openjdk.org> wrote:

> > Nevertheless, the tests are there, so no _new_ ones are needed. We can duplicate them, if a majority thinks it is beneficial.
> 
> As noted in the contribution guide (https://openjdk.org/guide/#testing-the-jdk), regression tests are expected for a majority of changes that are done in the JDK. There are situations where regressions tests cannot be added, but this isn't one. I believe a new method with a default specified implementation in a public exported interface deserves a regression test of its own.

The docs do not say that the regression test must be *separate*. Again: We *do have* testing covered. The question is *not* whether we need a test -we *do have one*-, but whether to *duplicate* it.

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PR Comment: https://git.openjdk.org/jdk/pull/21730#issuecomment-2810119199