Re: failure doing massive revert

On Thu, Sep 18, 2008 at 5:09 AM, Mike Galbraith [off-list ref] wrote:

For reasons I'd rather not go into, I decided to create a merge free
tree to try to bisect.  I did this yesterday for a smaller range, and it
worked fine, and I was able to revert the reverts to re-apply.  Trying
to revert everything from v2.6.26..today croaked.

for i in `git rev-list --no-merges v2.6.26..HEAD`; do git revert $i < /dev/null; done

Hmm, I don't think you can revert every single patch on a merged tree
that way for the same reason you can't just rebase it: history wasn't
linear.

I think something involving 'git rev-list --first-parent' and some
variant of "git diff $i $i^ | git apply" might work better, as it
would inherently squash merge commits, thus making them linearly
reversible (although throwing away large parts of history).

Throwing away history might not be what you want, but then again,
maybe it is.  It's the only way I know of to 100% reliably linearize
the history, anyway.

Also, if you use "&& done" instead of "; done" then it'll abort right
away when it has a problem.

Have fun,

Avery