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jenskutilek / FiraSystemFontReplacement

Modified version of the Fira Sans fonts to replace the default system font on macOS
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Umlaute result in blank Space #49

Closed karkraeg closed 6 years ago

karkraeg commented 6 years ago

Hi! German Umlaute (ä,ö,ü) result in a blank space after them in file or folder names.

See this visual example: https://transfer.sh/6tLbA/umlaut.mov

jenskutilek commented 6 years ago

Is that by any chance on macOS 10.13 and the new APFS file system?

jenskutilek commented 6 years ago

Nevermind, I could replicate it on the current system. The problem appears when an accented character is not entered in its precomposed form (‘Ü’ = U+00DC), but as a sequence of base letter and combining diacritic (‘Ü’ = U+0055 U+0308). I don’t know why though, as the diacritic has a width of 0 in the font.

karkraeg commented 6 years ago

So there is no way to change this behavour?

jenskutilek commented 6 years ago

I'll have to investigate … if it works in the default font, it should be possible to fix it.

splorp commented 6 years ago

Does this have anything to do with the regional language or keyboard settings of the OS? I’m using the 4.106.4 release of the fonts under Sierra (10.12.6) and cannot duplicate this issue using US settings. I am entering Ü (and other umlaut’d characters) using the “option-u -> character” keystrokes.

jenskutilek commented 6 years ago

Without having confirmed, I guess option-shift-u results in the precomposed Ü character. I entered the sequence U+0055 U+0308 via the "Show Emoji & Symbols" palette, showing the extra space. In theory, the result of both input methods should be equivalent by Unicode rules.

jenskutilek commented 6 years ago

I think I have found it … it seems there is a bug in glyphsLib so the widths for the uppercase variants of the combining diacritics is not set to 0.

jenskutilek commented 6 years ago

Should be fixed in the latest release, v4.106.5.