relikd/Memmon
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Memmon/README.md
relikd 60d2a15f0f Fix universal build (issue #2)
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macOS 10.10+ Current release All downloads

Memmon

Memmon remembers what your Mac forgets – A simple deamon that restores your window positions on external monitors.

Limitations: Currently, Memmon restores windows in other spaces only if the space is activated. If you know a way to access the accessibility settings of a different space, let me know.

Install

  1. You will need macOS 10.10 or newer.
  2. Grant Memmon the Accessibility privilege. Go to "System Preference" > "Security & Privacy" > "Accessibility" and add Memmon to that list. Otherwise, you can't move other application windows around and the app has no purpose.
  3. Thats it. The app runs in your status bar.

Status Icon

You can hide the status icon either via defaults or the same-titled menu entry. If you do so, the only way to quit the app is by killing the process (with Activity.app or killall Memmon). The status icon stays hidden during this execution only. If you restart the OS or app it will reappear (unless you hide the icon with defaults).

Memmon has exactly one app-setting, the status icon. You can manipulate the display of the icon, or hide the icon completely:

# disable status icon completely
defaults write de.relikd.Memmon icon -int 0
# Use window-dots-icon
defaults write de.relikd.Memmon icon -int 1
# Use monitor-with-windows icon (default)
defaults write de.relikd.Memmon icon -int 2
# re-enable status icon and use default icon
defaults delete de.relikd.Memmon icon

status icons

FAQ

Why‽

I am frustrated! Why does my Mac forget all window positions which I moved to a second screen? Every time I unplug the monitor. Every time I close my Macbook lid. Every time I lock my Mac.

Is it macOS 11? Is it the USB-C-to-HDMI converter dongle (notably one made by Apple)? Why do I have to fix things that Apple should have fixed long ago? …

Aren't there other solutions?

Yes, for example Mjolnir or Hammerspoon (and some comercial ones). But I do not need a full-fledged window manager. Nor the dependencies they rely on. I just need to fix this damn bug.

What is it good for?

First off, Memmon is less than 300 lines of code – no dependencies. You can audit it in 10 minutes... And build it from scratch – just run make.

Secondly, it does one thing and one thing only: Save and restore window positions whenever your monitor setup changes.

Develop

You can either run the main.swift file directly with swift main.swift, via Terminal ./main.swift (chmod 755 main.swift), or create a new Xcode project. Select the Command-Line template and after creation replace the existing main.swift with the bundled one.