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

[Jeff King <peff@peff.net>]

On Tue, Aug 16, 2011 at 04:01:57PM -0700, Junio C Hamano wrote:

> > No. The point is that I _already_ did it in the working tree version
> 
> But that does not change that you have to do that twice. You may already
> have done so in the working tree, and then redo it in the old indexed
> version again.

Right. The point is that the changes are tangled, to the point that it
is simpler to recreate them on one side than it is to instruct a tool
about how to untangle them. If they weren't tangled, then I would simply
make the change in the working tree, and then "add -p" it into the
index.

It's certainly not the dominant case. I'd say I run into it no more
frequently than once every week or so. I usually end up using "add -e"
to do what I want, but it's very error prone and annoying.

> > while doing my s/hello/goodbye/ change (let's call this the "new
> > change"). And ideally I would just use "git add -p" to stage only the
> > s/word/world/ change (let's call this the "fixup"). But they're tangled
> > in a single hunk, and I need some way of splitting them.
> 
> As a way to punt from making "add -e" usable, I'd think it would be a
> workable q&d workaround, even though it feels wrong, and I would imagine
> that normal people would probably prefer the "check out to a temporary
> file to be edited" solution you wrote in your previous message.

Yeah, I think that is the sanest of the options brought up in this
thread. I'm curious if Duy had another use case, though, that made him
think of --swap.

-Peff