Re: [emacs-bidi] missing fonts for bidi Emacs on cygwin

[Eli Zaretskii]

> Date: Tue, 11 Oct 2011 10:45:23 +0900
> From: "Martin J. Dürst" <address@hidden>
> CC: Eli Zaretskii <address@hidden>, address@hidden
> 
> Arabic letters are now shown, in the right RTL order. But they are
> not connected.

As Handa-san points out, you need to install additional libraries and
reconfigure and rebuild Emacs with them, to get Arabic shaping to
work.

> On the other hand, these work fine in the Windows version.

The native Windows version uses a different shaping engine, called
Uniscribe.  That engine supports all the features Emacs needs,
including Arabic shaping, in a single DLL which comes with the OS.  I
guess no one made the Cygwin port of X use Uniscribe, which is why you
need those additional libraries that provide an equivalent
functionality on Posix systems.