On Mon, 17 Feb 2025 14:06:53 GMT, Daniel Gredler <dgred...@openjdk.org> wrote:
> On other platforms like Windows and Linux, the `\n`, `\r` and `\t` characters
> are ignored when drawing text to a `Graphics2D` object. On macOS this is not
> currently the case.
>
> See, for example, `CMap.getControlCodeGlyph(int, boolean)` or
> `RasterPrinterJob.removeControlChars(String)`.
>
> This bug was found while running
> `test/jdk/java/awt/print/PrinterJob/PrintTextTest.java` on macOS.
>
> The new test class passes on Linux, Windows and macOS.
I am seeing an existing test fail on macOS with this change
java/awt/font/GlyphVector/NLGlyphTest.java
java NLGlyphTest
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: Index 0
out of bounds for length 0
at
java.desktop/sun.font.StandardGlyphVector.getGlyphCode(StandardGlyphVector.java:311)
at NLGlyphTest.main(NLGlyphTest.java:46)
This code
char[] chs = { '\n' };
GlyphVector lgv = font.layoutGlyphVector(frc, chs, 0, 1, 0);
results in a GV with zero glyphs, which isn't what I'd expect - that a string
would have no glyphs at all.
Interestingly I think it is OK for some fonts, but not OK for most fonts.
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PR Comment: https://git.openjdk.org/jdk/pull/23665#issuecomment-2705094639
