Background expansion keybindings are not listed in the menu

[shhyou]

Version

Racket 8.9

Description

On Linux, the background expansion keybindings exist but are not listed in the keybindings window. These keybindings are listed on Mac.

Here is a list of missing keybindings:

• Renaming: C-x m on Mac / ctrl-alt-x m on Linux.
• Jump to previous/next bound occurrence: C-x p and C-x n on Mac / ctrl-alt-x p and ctrl-alt-x n on Linux
• Jump to binding occurrence: C-x b on Mac / ctrl-alt-x b on Linux

Misc

It looks like this method removes quite some keybindings, but I don't understand why the C-x prefix becomes ctrl-alt-x on Linux and why they are absent.

gui/gui-lib/framework/private/keymap.rkt

Lines 201 to 205 in 5f05558

	(define/private (on-this-platform? cs)
	(define splits
	(for/list ([x (in-list (split-out #\; (string->list cs)))])
	(all-but-last (split-out #\: x))))
	(define (has-key? k) (ormap (λ (x) (member (list k) x)) splits))

gui/gui-lib/framework/private/keymap.rkt

Lines 221 to 225 in 5f05558

	[(eq? (system-type) 'unix)
	(cond
	[(or (has-key? #\a) (has-key? #\d))
	#f]
	[else #t])]