Re: Question about call-next-method

On 16 Nov 2025, at 17:30, Bradford Miller (as gorbag at icloud dot com) <[email protected]> wrote:
> 
> One can already redefine common functions in the middle of a program and use them unless their calls were compiled

Try to read what I wrote.  I'll quote it here:

> Still less should the behaviour of programs which might add, redefine or remove methods to a generic function while it is being called be defined.


Do you see the bit I have now emphasized above?  So what you are asking or is not 'redefining functions and using them': it is redefining functions that are in the process of being called and then expecting that the new definition takes effect for that call.

(Redefinition of ordinary functions is in fact allowed not 'unless they were compiled', but unless their callers were in the same file or they're declared inline.).