[LyX/master] Do not override (Back)Tab in Adv F&R when it is useful

[Jean-Marc Lasgouttes]

Le 24/07/2022 à 13:00, Kornel Benko a écrit :
> Use this in user.bind
> 	\unbind "Tab" "message *"
> (for the proposed '\unbind "Tab" "*"' is more to do)
> 
> This seems to work. But the shortcut-dialog still shows the original
> setting.

With this patch, your can unbind "*" directly. This seems cleaner to me.

But indeed I have no idea of how Prefs work... And since I use 
LFUN_UNKNOWN_ACTION as a wildcard, I suspect that the prefs code, which 
uses it for other reasons, will be also confused.

JMarc