Re: Emacs git repo mangled

[Óscar Fuentes]

Stefan Monnier <monnier@iro.umontreal.ca> writes:

> Andreas Schwab [2022-10-31 19:33:13] wrote:
>> On Okt 31 2022, Stefan Monnier wrote:
>>> Nothing's wrong: the Git history looks fine to me.
>>> The problem is fundamental to `git bisect` (which starts from the
>>> assumption that the history is linear, which is a lie).
>> That's not true.  Bisection handles nonlinear history very well.
>
> I did not say it doesn't handle nonlinear history well.  I said it
> assumes that the history is linear (it's inherent to the notion of
> "bisecting").

Not at all. See "Bisection algorithm discussed" in [1]. `git bisect'
would be very dumb if it wouldn't take advantage of merge commits.

As for bisecting Emacs, it's a real PITA because there are so many
broken commits plus you really need a full rebuild for each step to
avoid false results.

One thing that would be useful is a list of bad commits on a format that
could be easily used with `git bisect skip'.

1. 
https://mirrors.edge.kernel.org/pub/software/scm/git/docs/git-bisect-lk2009.html