Thanks. Any plans to fix that? Or is there a way to turn off this heuristic? On 7 September 2017 at 11:47, Jeff King <peff@xxxxxxxx> wrote: > On Thu, Sep 07, 2017 at 11:20:15AM +0200, Paweł Marczewski wrote: > >> I have an interesting case. In my repository, there are two commits, >> 'one' and 'two'. 'one' is reachable from 'two' (as evidenced by 'git >> rev-list two | grep $(giv rev-parse one)'). However, the output of >> 'git rev-list two..one' is not empty, as is 'git rev-list ^two one'. >> >> Here is the repository: https://github.com/pwmarcz/git-wtf/ >> >> It seems that the commit dates influence this behavior, because when I >> edit all the dates to be the same, the output of 'git rev-list >> two..one' is empty. Pruning seemingly irrelevant parents also makes it >> empty. >> >> I verified the behavior on git versions 2.14.1, 2.11.0, and on the >> 'next' branch (2.14.1.586.g1a2e63c10). > > Yes, this is known. The commit dates are used as a proxy for graph > height (or generation numbers, if you prefer) so that we avoid having to > walk all the way down to a merge base before producing any output. But > it can give the wrong answer in the face of clock skew. > > We walk back five extra commits more than we need to in order to avoid > small runs of skewed commits, but obviously you can have arbitrary-sized > runs. > > -Peff
