Python bindings and Gtk3

[Mike Alexander]

> On Aug 8, 2017, at 10:23 AM, John Ralls <jralls at ceridwen.fremont.ca.us> wrote:
> 
> I don't know if the MacPorts X-build uses the CoreText or FontConfig backend for Pango, but if it uses CoreText it might be your problem.

I don’t know either.  I see that Pango’s configure looks for (and finds) fontconfig, but then says "checking which cairo font backends could be used... quartz freetype”.  I suspect it is using fontconfig.  I am using a Retina display, but the text in the tabs seems like it’s normal size.  There is a lot of blank space around the text that makes the tab bigger.  In fact the text itself is smaller in the Gtk3 version.  Here are a couple of screenshots.