On Jul 13, 2017, at 5:48, Allan Odgaard <mailinglist@textmate.org> wrote:

On 12 Jul 2017, at 17:22, じょいすじょん wrote:

The defaults keys you provided also do not exist by default on my system.

Correct, this would only be if the user has explicitly changed the default fixed width font.

Core Text and AppKit are both kind of vague.
The solution there seems to be to start with a font and apply the fixed width trait to get a descriptor for a font that comes close to matching somehow (who knows how? personal taste?) or present a UI and let a user select something. Still does not give a default does it? How loopy these APIs can be :(

NSFont has a method to return the default fixed width font, from Python you can use this code to obtain it:

#!/usr/bin/python
import objc
from AppKit import NSFont

font = NSFont.userFixedPitchFontOfSize_(0)
print("family: %s, name: %s, size: %.1f" % (font.familyName(), font.fontName(), font.pointSize()))

On my system it prints:

family: Menlo, name: Menlo-Regular, size: 11.0

I deliberetly hardcoded the shebang to call /usr/bin/python as PyObjC (the Cocoa bridge used here) may not be installed for a custom python on the user’s system.