Re: Undo defalias

[Stefan Monnier]

>> Depends on how it got set to `ignore` (you can try exiting from
>> a recursive edit or a minibuffer), but in many cases it's impossible: the
>> #<subr message> object may simply not be reachable from anywhere any
>> more :-(
> It is: see the short POC code I posted.

The POC you posted works only if `message` was redefined in some
particular way, such as when a loading a file that has

    (defalias 'message #'ignore)

but then it wouldn't be the result of a bug but of deliberate harm :-)
AFAIK most cases where `message` can end up aliased to `ignore` is when
you have code doing

    (cl-letf (((symbol-function 'message) #'ignore))
      ...)

In that case, the previous value won't be found in `function-history`.
As for why is the `ignore` rebinding is still active...


        Stefan