RFR: 8208377: Soft hyphens render if not using TextLayout

[Daniel Gredler]

On Wed, 11 Dec 2024 20:48:51 GMT, Alisen Chung <achung at openjdk.org> wrote:

>> Soft hyphens should never render, regardless of the rendering path used internally.
>> 
>> This PR does not expand the categorization of "complex" characters in `FontUtilities` in order to force the use of `TextLayout` rendering code paths (as was discussed in JBS).
>> 
>> Instead, it takes the existing (limited) format-category checks in `sun.font.CMap` (a TrueType font helper class), expands it to a more general / complete default-ignorable check (`FontUtilities.isDefaultIgnorable(int)`), and then moves these checks out of `CMap` and up a level into the `CharToGlyphMapper` classes themselves.
>> 
>> The Type1 and TTF glyph mappers have been updated, but the macOS glyph mapper has not been updated.
>
> Test currently fails with error `java.lang.RuntimeException: stringWidth for char 00ad using font Dialog: 101 != 333
> `

@alisenchung What OS and architecture are you testing on where you see failures?

The automated checks seem to have all passed (except for `macos-aarch64`, which has been broken for quite a few weeks due to an unrelated toolchain issue: `xcode-select: error: invalid developer directory '/Applications/Xcode_14.3.1.app/Contents/Developer'`).

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PR Comment: https://git.openjdk.org/jdk/pull/22670#issuecomment-2548274677