Feature: sync the mark region between vi-visual-mode and the mark region selected by mouse-clicking.

[sakurawald]

I am using vi-mode in sdl2 version lem.
If you use mouse click, to select a region.
And then using keyboard to use vi commands, the selected region still be slected, and is not count as the vi-visual mode.

To let the vi-mode works normally, you have to type escape or click the mouse again, to un-mark the selected region.
However, i want to know if there is a way to un-mark the selected region selected by mouse-click automatically while entering the vi-mode.

[sakurawald]

I didn't find a universal way to defien escape key sequence for vi-mode, so i do this:

;; use jk to escape vim. (use v key to escape in visual mode)
(define-key lem-vi-mode:*insert-keymap* "j k" 'lem-vi-mode/commands:vi-normal)
(define-key lem-vi-mode:*ex-keymap* "j k" 'lem-vi-mode/commands:vi-normal)

(define-key lem-vi-mode:*normal-keymap* "Space j k" 'escape)

[sakurawald]

That's annoy, since if you use mouse click to select a region, then the vi-mode still in NORMAL instead of VISUAL.

[sakurawald]

Maybe one solution is to, write 2 hooks:

1. on region marked, switch to vi-visual-mode
2. on region un-marked, swtich to vi-normal-mode

However, i don't know how to do this, and wheter there are existing hooks for this purpose.