[PATCH 4/4] Update documentation on catching a group of related syscalls.

[Eli Zaretskii]

> From: Gabriel Krisman Bertazi <gabriel@krisman.be>
> Cc: gdb-patches@sourceware.org
> Date: Wed, 12 Nov 2014 00:04:28 -0200
> 
> >> +related syscalls, by passing the argument @code{group:network} to
> >> +@code{catch syscall}.
> >
> > How does one know which groups, if any, exist?
> >
> 
> Indeed, as I said in part 0, I don't provide any way to list which group
> exists, other than the usual word completion.  The reason is that catch
> syscall does not provide a way to list system calls and we couldn't
> agree on the right syntax for this feature on the RFC I sent earlier to
> this list.
> 
> Maybe I could rewrite this part of the documentation to suggest
> something like "Tab is your friend". WDYT? :)

Yes, saying that TAB-completion (including M-TAB) can be used to see
the list of groups is fine with me.

Thanks.