Re: & and M-& to run programs asynchronously

[Mathias Dahl]

>>> We could even improve the command `dired-flag-garbage-files' to allow the
>>> user to modify its default regexp value in the minibuffer after typing `% 
>>> &'.
>>
>>   Maybe just if you prefix it with C-u ?
>
> C-u will make it inconsistent with a similar command % m 
> (`dired-mark-files-regexp')
> where a prefix argument means to *unmark* files matching a regexp.

So does % g, but % d does not. And I don't see that it should it be a
problem considering that `dired-flag-garbage-files' does not use the
prefix argument today. We decide what it should do.