MouseFollowsFocus: avoid getting the mouse stuck in screen corners

Source/MouseFollowsFocus.spoon/init.lua

@@ -55,7 +55,7 @@ function obj:start()
   })
   self.window_filter:subscribe({
     hs.window.filter.windowFocused
-  }, function(window) 
+  }, function(window)
       if self.onChangeOfScreenOnly and self.currentWindowScreen and self.currentWindowScreen:id() == window:screen():id() then return end
       self:updateMouse(window)
       self.currentWindowScreen = window:screen()
@@ -91,6 +91,13 @@ function obj:updateMouse(window)
   local current_pos = hs.geometry(hs.mouse.absolutePosition())
   local frame = window:frame()
   if not current_pos:inside(frame) then
+    local current_screen = hs.mouse.getCurrentScreen()
+    local window_screen = window:screen()
+    if current_screen and window_screen and current_screen ~= window_screen then
+      -- avoid getting the mouse stuck on a screen corner by moving through the center of each screen
+      hs.mouse.absolutePosition(current_screen:frame().center)
+      hs.mouse.absolutePosition(window_screen:frame().center)
+    end
     hs.mouse.absolutePosition(frame.center)
   end
 end