Re: [PATCH 2/2] checkout: do not mention detach advice for explicit --detach option

[Jeff King <peff@peff.net>]

On Mon, Aug 15, 2016 at 11:40:21AM -0700, Stefan Beller wrote:

> When a user asked for a detached HEAD specifically with `--detach`,
> we do not need to give advice on what a detached HEAD state entails as
> we can assume they know what they're getting into as they asked for it.
> 
> Signed-off-by: Stefan Beller <sbeller@google.com>
> ---
> 
>  Junio writes:
>  > It might be controversial how the second from the last case should
>  > behave, though.
>  
>  I agree. I think if the advice is configured explicitly we can still give it.
>  That makes the code a bit more complicated though.

So....I guess. But has anybody in the history of git ever explicitly
configured advice.* to true?

It has never produced any change of behavior, and the whole point of
"advice.*" was that git would advise by default, and you would use
advice.* to shut it up once you were sufficiently educated.

I don't think doing it this way is _wrong_. It just feels sort of
pointlessly over-engineered. It's also a little weird that all of the:

  if (advice_foo)

will trigger because "advice_foo" is set to -1. I think it does the
right thing, but it feels like a bug (the value is now a tri-state, and
we silently collapse two states into one).

-Peff