bug#33901: 26.1; cl-letf is unexpectedly not autoloaded

[Markus Triska <triska@metalevel.at>]

Andreas Schwab <schwab@linux-m68k.org> writes:

>> Is this really the intended way? I mean, why is this described as an
>> "autoloaded" macro then?
>
> Because you have loaded the cl package.

To be absolutely honest, for a macro that is documented as autoloaded, I
expect Emacs to automatically load all required files. So, in this
concrete case, I would expect Emacs to automatically load cl, cl-lib, or
cl-macs, or whatever is necessary to use cl-letf. If it does not do
this, my impression is that the macro shall not be called autoloaded, on
the grounds that the required definitions are not automatically loaded.