Re: emacs.pdmp not always rebuilt

[Gregory Heytings]

> > or simply test if substitute-command-keys is fboundp, and avoid using 
> > it if not.
>
> That would be another option, yes.  I don't think it's much better 
> though, as Stefan K said a few hours ago the potential effect on 
> substitute-command-keys on error messages during the build is minor.

And after thinking a few seconds more about this, IMO it would not be a 
better option: the fact that substitute-command-keys is fboundp does not 
guarantee that it will work correctly, because it could be the function 
that is currently being debugged or updated.  So IMO it's better to simply 
avoid using substitute-command-keys on error messages during bootstrap, 
which is what the patch does.