Say I have opened up a file in emacs, and I type in something like:
x \and \top
Then, a Python program reads that file, and:
- replaces all
- replaces all
- it does some thinking on the expression
x \and \topand decides that that is the same as
x, so will append an
The final result of all the changes made by the program to the file will leave it like so:
x ∧ T = x
Question: how should I pass messages between emacs and a Python program?
I don't want the Python program to be constantly polling the file for changes (using a
while loop), and I probably don't want emacs to be constantly polling the file for updates (which I know how to do using the
Maybe I press some key combination, and then that sends a message to a Python script that its time to read the file and make updates and then the Python script would message emacs and ask it to update what it is displaying in its buffer.
How could this be done?
My goal: I want to take advantage of the fact that emacs knows how to intelligently display pixels on a screen in an interactive way (it can manage dividing up the screen space, display text and allow editing, syntax highlighting, etc.). I want to take advantage of my knowledge of Python to do heavy programming (rather than using emacs Lisp), and emacs would be the UI for this program. I view communication between emacs, and the Python program as crucial to achieving this goal. If there is a better way to think about this though, I'd love to learn (for instance, maybe I really should be involving emacs Lisp a lot more, and eliminating Python entirely?).