-v (was Re: [MERGE] Show all merge revisions in 'commit -v' message template)

[Ian Clatworthy]

Matthew D. Fuller wrote:

> Not directly related to this, but I'm always rather bothered at how -v
> is a unstructured "we sometimes want to show more info, so stick it
> under -v" splattered across random commands.  This is made doubly
> unpleasant since -v is a global option, so the only thing that ever
> shows up in help about it is "Display more information."  Even on
> commands where it doesn't DO anything.  There's no indication about
> what information it shows, if it shows any, or why you'd want it.

That's actually easily fixed by provided custom help for -v.
Some commands do this already (e.g. pull, log) but we should
certainly do it more often.

Ian C.