--- Junio C Hamano <junkio@xxxxxxx> wrote:
> Andreas Ericsson <ae@xxxxxx> writes:
>
> > Alex Riesen wrote:
> >>>> >Which leads us to the always interesting, fun and exciting:
> >>>> >
> >>>> > git ls-tree -r HEAD | git update-index --index-info
> >>>> >
> >>>> >which will undo everything except 'git add' from the index, as
> >>>> >ls-tree -r is listing everything in the last commit.
> >>>> >
> >>>>
> >>>> ... and also shows The Power of the Pipe, which Daniel@google was
> >>>> missing in recent versions of git. ;-)
> >>>>
> >>>> Btw, this is most definitely not a documented thing and requires a bit
> >>>> of core git knowledge, so perhaps the "shell-scripts were good for
> >>>> hackers to learn what to pipe where" really *is* a very important point.
> >>>
> >>> Agreed.
> >>
> >> Still, it is very impressive, it is supported (and will be
> >> supported, I assume),
> >> and as such - worth mentioning at least in these examples everyone keeps
> >> dreaming about. Until that happened, why not mention that the output
> >> of "git ls-tree" is compatible with --index-info of "update-index"?
> >
> > +1. Me likes, although I would amend the command-line that Shawn sent
> > and describe what it does. Examples > descriptions everywhere else in
> > the git docs, so it would be concise to do so.
>
> I do not like the one that does the whole tree that much. I
> would think "git-read-tree -m HEAD" would be simpler and more
Yep, that's what I use... "git-undo-update-index" is
#!/bin/sh
git-read-tree -m -i HEAD
Luben
> efficient if you are reverting the whole tree.
>
> On the other hand, I designed --index-info to be compatible with
> ls-tree output (it is not an accident, it was designed). In
>
> git ls-tree HEAD frotz | git update-index --index-info
>
> "frotz" part does not have to be the exact path but can be a
> directory name. It means "revert everything in this directory".
>
> This is quite heavy-handed and you would probably want to run
> update-index --refresh afterwards.
>
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