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In FreeSerif, the quarter note 1D15F seems to overlap the following
character -- it seems the width isn't large enough. In case it matters,
the quarter note 2669 seems fine. I'm not really a font person, so I
don't know immediately how to fix this (and anyway, my Savannah account
seems to be busted so I couldn't easily send a patch).
- FreeSerif: Quarter note 1D15F overlaps following character David Turner