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Emacs supports several different font backends when built with Haiku
windowing support, though the subset supported is subject to the list of
dependencies present and enabled when Emacs was configured. You can specify
which font backends to utilize by providing -xrm Emacs.fontBackend:backend
on the command line used to invoke Emacs,
where backend is one of the backends listed below, or on a per-frame
basis by changing the font-backend
frame parameter.
Two of these backends, ftcr
and ftcrhb
are identical to their
counterparts on the X Window System. There is also a Haiku-specific backend
named haiku
, that uses the App Server to draw fonts, but presently
cannot display color fonts or Emoji.