Undefine functions from parent major-mode

Undefine functions from parent major-mode

[Thorsten Jolitz]

Hi List, 

assume there is a major-mode that would serve nicely as a parent-mode
for a new major-mode I want to write, but this parent-mode has lots of
functions/commands, and I would need only a few of them - and must
deactivate the others in the derived mode, because they won't work.

I don't talk about just undefining the keybindings for parent-mode
commands, the redundant functions/commands should simply not be
available anymore in the derived mode, not via 'M-x' and not via 'M-:'.

What is the righ/canonical way to do that?

-- 
cheers,
Thorsten

Re: Undefine functions from parent major-mode

[Stefan Monnier]

> What is the righ/canonical way to do that?

Tell your users not to use them in your mode.


        Stefan

Re: Undefine functions from parent major-mode

[Michael Heerdegen]

Stefan Monnier <monnier@iro.umontreal.ca> writes:

> > What is the righ/canonical way to do that?
>
> Tell your users not to use them in your mode.

Which means: commands/functions are not "assigned" to a mode in any way,
besides the fact that they are used, or not used, by the code of the
mode.

Or do you mean key bindings?


Michael.

Re: Undefine functions from parent major-mode

[Thorsten Jolitz]

Michael Heerdegen <michael_heerdegen@web.de> writes:

> Stefan Monnier <monnier@iro.umontreal.ca> writes:
>
>> > What is the righ/canonical way to do that?
>>
>> Tell your users not to use them in your mode.
>
> Which means: commands/functions are not "assigned" to a mode in any way,
> besides the fact that they are used, or not used, by the code of the
> mode.
>
> Or do you mean key bindings?

I did not really mean keybindings, but I see now that all I have to
worry about are actually the keybindings - its the users responsability
not to use e.g. dired commands in message-mode, and if he does, he will
get errors most likely.

Thanks for the hints.

-- 
cheers,
Thorsten

Re: Undefine functions from parent major-mode

[Stefan Monnier]

> Which means: commands/functions are not "assigned" to a mode in any way,

Exactly.  They're all in a global namespace, so nothing prevents you
from doing M-x gnus-foo-bar in any buffer.


        Stefan