I would like to disable the mouse when a specific setting is set to enabled.

I thought that the following in a .sublime-keymap would work:

{
	"button": "button1", "count": 1,
	"press_command": "do_nothing",
	"context":  { "key": "setting.typewriter_typing", "operator": "equal", "operand": true } ]
},

But, alas, it doesn’t work. The “context” is ignored completely and mouse-clicking is disabled everywhere.

Any ideas on how to implement this?

Alex

PS. I had tried, and failed, to resolve this circa ST2. The mousemap’s disregard for context is very strange.