Re: proced: ppid of process ID 0 can be 0

[Stefan Monnier]

>> Indeed, it should be in system-process-attributes which is already
>> OS-dependent.
> If you mean by having no ppid attribute, then that's ambiguous, since
> an attribute can be missing because it is inaccessible for some
> reason, like some kind of failure unrelated to the fact that the
> process is really a root of a tree.

Seems very hypothetical.  And on top of that, even in that hypothetical
case, it's far from clear that it would create any problem.  More to the
point: even if we could distinguish the "no ppid" from "unkown ppid",
it's unclear how Elisp code could make use of it.  So I think we
shouldn't worry about it.


        Stefan