Hi all, After some of the recent fixes for default-ignorable characters [1, 2] I'm wondering what the expected behavior for the following methods is w.r.t. default-ignorable characters (or really any invisible glyphs):
Font.canDisplay(char) Font.canDisplay(int) Font.canDisplayUpTo(String) Font.canDisplayUpTo(char[], int, int) Font.canDisplayUpTo(CharacterIterator, int, int) The JavaDoc for the first two methods explicitly states "checks if this Font has a glyph for the specified character", which is clear enough, but doesn't match the method name since in reality any font can display e.g. U+200B (zero width space) regardless of whether it has a glyph in the font, since U+200B will always map to the invisible glyph and will be skipped during layout / rendering. The JavaDoc for the last three methods is more ambiguous, seeming to focus on whether or not the font "can display" the string. Again, characters which map to invisible glyphs do not need glyphs in the font, so flagging them as "can't display" seems questionable. Basically, I'm wondering whether these five methods should be communicating that chars which map to invisible glyphs can be displayed, regardless of whether the font has a glyph for them. Thoughts? Take care, Daniel [1] http://www.unicode.org/L2/L2002/02368-default-ignorable.html [2] https://github.com/openjdk/jdk/pull/22670
