Re: Smarter M-x that filters on major-mode

[Yuan Fu]

> On Feb 10, 2021, at 10:44 PM, Stefan Monnier <monnier@iro.umontreal.ca> wrote:
> 
>> It would indeed be very useful to provide a mechanism to exclude
>> commands from M-x that are useless outside of their major mode.
> 
> Similarly, you may mark some commands so they're just never available to
> `M-x`.  This could apply to some major and minor modes which are only
> meant to be used "internally", or to commands which only work when
> provided with a mouse event, or ...
> 
> That should be a very easy change to `execute-extended-command`.
> 
>> I've had a related idea to make `M-X' (a.k.a. `M-S-x') run a version of
>> `M-x' that *includes* only commands that are specifically relevant to
>> the current major mode.  This would be used when I specifically want to
>> do something in my major mode, as opposed to looking at the gazillion
>> different entry points for things like calendar, gnus, or tetris.
> 
> Yes, there's clearly a lot of room for improvement.
> I moved that function to ELisp to make it easier to hack on it, and I'm
> still hopeful that Someone™ will make use of it.
> 
> 
>        Stefan
> 
> 

Another idea that I once had is that to make a special M-x such that it only 
contains some selected commands, and as soon as there is only one candidate 
left, it is immediately executed (without pressing RET). This is somewhat 
between a keybinding and normal M-x.

Yuan