bug#71766: 30.0.60; HarfBuzz is not used in the Cygwin-w32 build

[Ken Brown]

On 6/24/2024 10:34 PM, Eli Zaretskii wrote:
> > Date: Mon, 24 Jun 2024 21:18:31 -0400
> > From: Ken Brown <kbrown@cornell.edu>
> >
> > The HarfBuzz library is hard-coded as libharfbuzz-0.dll in
> > w32uniscribe.c, but this is only valid on MS-Windows.  On Cygwin the
> > library is cygharfbuzz-0.dll.  As a result, HarfBuzz is not used in the
> > Cygwin-w32 build.  The obvious fix is
>
> Please install this on the emacs-30 branch if it's all that is needed.

Done.

> > Before pushing this, I'd like to test it, but I don't know enough about
> > HarfBuzz to do that.  Can someone tell me how to test that HarfBuzz is
> > actually being used as intended?  All I've done so far is to start emacs
> > and note that the display looks reasonable.
>
> Type "C-u C-x =" on some character, it should tell you what is the
> backend (at the beginning of the font name).  I would also use "C-h h"
> to compare the display with another configuration where you know
> HarfBuzz is being used.

Thanks, it looks good.  Closing.

Ken