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I'm using Spacemacs on MS Windows (msys2 build) and when a tooltip pops up Emacs seems to move my mouse pointer out of the way. How can I prevent this automatic movement?

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I do not use Spacemacs, but this could be caused by mouse-avoidance-mode. It normally moves the mouse when the cursor is nearby. So it may also apply to tooltips, I am not sure.

You can check if it is enabled with C-h v mouse-avoidance-mode. If it is not nil, you can disable it with (mouse-avoidance-mode -1).

There are also several other options how the mouse is moved, see the manual. I used to set it to 'exile, which makes the cursor automatically return.

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  • Sadly it's already nil.
    – Daniel Hill
    Nov 11, 2019 at 2:44
  • The low-level function to move the mouse seems to be set-mouse-position. You can try to enable the debugger when this function is invoked and see what other function triggered it. To do so evaluate (debug-on-entry 'set-mouse-position). This will only work if whatever moves your mouse, uses this function, but that seems fairly likely. To disable the debugger again use (cancel-debug-on-entry 'set-mouse-position).
    – fpiper
    Nov 11, 2019 at 15:05

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