Feature request: previous master and next master shortcuts

Glyphs
2

More than nine masters is a very rare case. So don’t think I will implement that. But you can add it yourself.
Copy the following lines in a python file each.

#MenuTitle: Next master
# encoding: utf-8
Font.parent.windowController().setMasterIndex_(Font.parent.windowController().masterIndex() + 1)

#MenuTitle: Previous master
# encoding: utf-8
Font.parent.windowController().setMasterIndex_(Font.parent.windowController().masterIndex() - 1)

The y0u assign shortcuts in System Preferences > Keyboard > Shortcuts > App Shortcuts

I added the masterIndex to the wrapper, so with the next update, you may change the files to this:

#MenuTitle: Next master
# encoding: utf-8
Font.masterIndex += 1

#MenuTitle: Previous master
# encoding: utf-8
Font.masterIndex -= 1