Re: [PATCH] update-index: add --swap to swap index and worktree content

[Junio C Hamano <gitster@pobox.com>]

Martin von Zweigbergk <martin.von.zweigbergk@gmail.com> writes:

> Maybe the above shows that I'm missing something. Still, would it be
> possible to achieve the use case with something like the following?
>
> git stash --keep-index

While I sense a vague aversion to committing in general in this
discussion, which I am not particularly fond of, the whole point of
"stash" is to avoid the mental burden of going over the "hump" of
committing something not ready and to replace it with a "save it as a
temporary state" that technically has the same overhead of committing but
has a lot less mental overhead. Perhaps "swapping the state of all and/or
selected paths" fits better in "stash", not "update-index"?

I dunno, but in general, a new feature to cater to _common_ end user needs
should fit in the Porcelain layer. We would be doing something wrong if we
need to teach an obscure option of lower plumbing to end users.

I personally used to feel that "ls-files -u" during a conflicted merge to
be the single sore-thumb that stuck out from this point of view, but these
days "status -s" gives the same information in a more useful way to the
end users, and I am reasonably happy with that. It may be that the end
user operation (perhaps "stash --swap", but I am not married to that) that
fits well in common workflows ends up using "update-index --swap" as an
underlying implementation detail, but I'd prefer to see how the final end
user experience using Porcelain would look like first.