'send-abort-event' key binding to "c-]"

[alanz]

I am trying to set up a familiar evil-mode environment for myself in lem, and attempted

(define-key lem-vi-mode:*normal-keymap* "c-]" 'lem/language-mode:find-definitions)

To my surprise, pressing that key combination pops up a stack trace instead. After some spelunking, I discovered that c-] is hard coded (in sdl2 at least) to call send-abort-event.

See

lem/frontends/sdl2/keyboard.lisp

Lines 124 to 127 in 0de0da6

	(defun send-key-event (key)
	(if (lem:match-key key :ctrl t :sym "]")
	(lem:send-abort-event (lem:find-editor-thread) nil)
	(lem:send-event key)))

Is there a reason for this particular key choice?
How does this abort functionality differ from the emacs c-g universal abort behaviour?
Should it be bound to c-g instead?

[g-gundam]

FYI, there is something bound to C-g already.

keymap	function
lem-vi-mode:*motion-keymap*	lem-vi-mode/commands:vi-keyboard-quit
lem-core:*global-keymap*	lem-core/commands/other:keyboard-quit