this post was submitted on 30 Oct 2023
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Periodically run an external program and show notifications in the mode line (alien.top)
submitted 1 year ago by tms9918@alien.top to c/emacs
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I would like to write something to have emacs listen on dbus for notifications and update the color of a char on the mode line as telega does. Do you have any suggestions on how to do the above?

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[–] tms9918@alien.top 1 points 1 year ago (1 children)

Thank you! I am going to write the program, so I can write it in a way that makes it easy to interface with emacs. I was thinking about making it a publisher on the dbus and make my emacs code a subscriber so I do not need to care of the running time of the program. Any alternative suggestion is welcome. The program would periodically access a webpage, check its content and notify if changes match a bunch of criteria

[–] 7890yuiop@alien.top 1 points 1 year ago

If Emacs will start a long-running process and react whenever there's new output, then you'll want to see C-h i g (elisp)Asynchronous Processes and C-h i g (elisp)Output from Processes. (n.b. I've added a couple of other notes to my initial reply, too.)