Re: master bdda935 2/2: Merge branch 'master' of git.savannah.gnu.org:/srv/git/emacs

[Stefan Monnier]

> to preserve mtimes
>
> git branch #=> mybranch
> git-new-workdir.sh . /dev/shm/emacs
> cd /dev/shm/emacs; git checkout master; git pull
> git rebase master mybranch
> cd -
> git checkout -f mybranch  # touches only new files.
> rm -rf /dev/shm/emacs

Right (modulo "rebase" => "merge" and the fact that nowadays I'd use
`git worktree` instead of `git-new-workdir`), but this option comes with
the other caveat that it requires extra disk space, can take
significantly longer (because of the need to create all those files),
and requires you to do the conflict resolution in another tree (which
can be problematic if you want/need to compile something during the
resolution since nothing's compiled there yet so it'll take extra time
to `./configure` and compile).

IOW it's pretty far from "as seamless as `git merge`".


        Stefan