bug#41614: It's impossible to mark "--list-generations" for guix shell commands

[ksg]

Using emacs,
when I do,

M-x guix RET, under "Sub-popups" hit "c" (guix shell commands)

I can't mark "-l, --list-profiles",
because when I hit "-l",
'Switches' buffer automatically mark "-l, --list-generations".

The buffer showes the switches redundantly like below


Switches
 -l list generations (--list-generations) <-- "-l"
    ...
 -l list the user's profiles (--list-profiles) <-- "-l"


Both "--list-generations" and "--list-profiles" have the same short-form 
"-l".

I use emacs 26.3, guile 3.02, guix-20200518.1544 (from melpa)