Updates:
Cc: [email protected]
Comment #6 on issue 2657 by [email protected]: font kerning on Windows is
broken
http://code.google.com/p/lilypond/issues/detail?id=2657
Ah, I now see that I've missed to add Behdad Esfahbod's reply from Aug.
22nd to the tracker (Behdad is an active developer of Pango). So here it
is.
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(2) For some unknown reasons yet, we get different output for the
same font on GNU/Linux and Windows. While the former contains
ligatures (like `fi') and kerning, the latter doesn't have this.
We suspect a Pango problem since I/O snooping has shown that the
same fonts are used on both platforms.
Incidentally I was checking the basic-win32.c Pango module today and
noticed that it shortcircuits calling into Uniscribe
if !ScriptIsComplex(). That would explain what you are seeing. I like to
remove that hack and always call Uniscribe unconditionally...
Who knows, soon I may even remove the Uniscribe module and rely on HarfBuzz
Uniscribe backend on Windows.
If someone wants to try my hypothesis I'd be happy to help.
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I'm now CCing Behdad. Note that the code he is talking about is still in
Pango. Behdad, can you provide a small patch which we can test?
