RFR: 8348736: RichTextArea clamp and getText [v2]

[Ambarish Rapte]

On Tue, 28 Jan 2025 17:59:10 GMT, Andy Goryachev <angorya at openjdk.org> wrote:

>> Fixes minor issues uncovered while writing API tests #1677:
>> 
>> - StyledTextModel::clamp L559 is incorrect at the end of paragraph
>> - CodeArea.getText() adds extra newline at the end
>> 
>> This change should be back-ported to jfx24.
>
> Andy Goryachev has updated the pull request incrementally with one additional commit since the last revision:
> 
>   review comments

LGTM

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Marked as reviewed by arapte (Reviewer).

PR Review: https://git.openjdk.org/jfx/pull/1684#pullrequestreview-2579965590