Re: Redefining functions and variables

[Uday S Reddy <uDOTsDOTreddy@cs.bham.ac.uk>]

On 7/29/2010 11:16 AM, Elena wrote:
> On Jul 29, 9:57 am, Stefan Monnier<monn...@iro.umontreal.ca>  wrote:
>> Just as is the case for `defun', redefining macros with `defmacro'
>> is problematic.  I really recommend not to do that and use defadvice
>> instead, which was designed specifically for this purpose.
>
> Do you mean macros can be adviced too? Something like this (it does
> not compile):

No, Stefan is advising you not to mess with defun or defmacro.

These are essentially fundamental built-in operations of Elisp and changing 
them can produce very strange behaviors.

If you are trying to use user-contributed packages that are redefining standard 
Emacs functions, then you should seriously consider whether you should use such 
packages.  Emacs doesn't enforce the quality of packages you use.  You do.

Cheers,
Uday