compilation-start without shell?

[Lennart Borgman]

Would it be possible to allow compilation start to not use a shell?

With some programs it is quite hard to use a shell, at least on w32.
And you do not always want to be able to edit the `command' argument.
(Or, that editing might be done on another level.) However reusing the
code in compilation-start may still be good.

A simple logic for calling conventions could be that if `command' is a
list then a shell should not be used, but instead start-process should
be used directly.

But what technical difficulties are their doing this?