On Wed, 15 Apr 2026 10:21:53 GMT, Thiago Milczarek Sayao <[email protected]> wrote:
> `GetStringUTFChars` returns a modified UTF-8 string that encodes > supplementary characters differently from standard UTF-8, so emojis may not > be handled as expected by GTK or other Linux desktop components that expect > standard UTF-8. > > See: > https://www.oracle.com/technical-resources/articles/javase/supplementary.html > https://www.javathinking.com/blog/what-is-the-java-s-internal-represention-for-string-modified-utf-8-utf-16/ > > There are other places where `GetStringUTFChars` is used, such as in the file > open dialog, but it’s unclear whether this is affected in any real user > scenarios. > > Using the sample from the bug report with this fix: > <img width="778" height="574" alt="image" > src="https://github.com/user-attachments/assets/6a66a746-2239-465d-ad5f-688933deb537"; > /> > > > --------- > - [x] I confirm that I make this contribution in accordance with the [OpenJDK > Interim AI Policy](https://openjdk.org/legal/ai). Testing looks good. I left one minor comment. I'll reapprove if you make the suggested change. modules/javafx.graphics/src/main/native-glass/gtk/glass_general.cpp line 894: > 892: > 893: /* > 894: * GetStringUTFChars returns a modified UTF-8 string I recommend adding an initial sentence before this one stating what the method does (followed by the comment you added, which explains why). Something like: Convert from jstring to standard UTF-8 using GTK utility method g_utf16_to_utf8. ------------- Marked as reviewed by kcr (Lead). PR Review: https://git.openjdk.org/jfx/pull/2150#pullrequestreview-4113535577 PR Review Comment: https://git.openjdk.org/jfx/pull/2150#discussion_r3086431920
