Fix log crashing in subdirectories

[cruessler]

When opened in a sub-directory of a git repository, the log view crashes. Replacing gix::open by gix::discover fixes this issue. gix::open errors when the passed directory is not a git repository, gix::discover searches parent directories for a git repository. The code causing the crash has not been released yet, so no changelog entry is necessary.

[extrawurst]

@cruessler can you add a teest for that so we don't regress on this again?

[extrawurst]

@cruessler we also need to make sure it does respect the env vars, see #2298

[cruessler]

@cruessler can you add a teest for that so we don't regress on this again?

@extrawurst I just added a test for running AsyncLog in a sub-directory (the test fails on master, but passes on this branch). The test works, but it feels a bit like testing implementation details. I think we could keep it for now, but might want to come up with a cleaner test in the future. What do you think?

I’ll have a look at environment variables next.

[extrawurst]

@cruessler please make a followup with a test for the env, this broke in the past and it would be good to know when it does :)

[cruessler]

@cruessler please make a followup with a test for the env, this broke in the past and it would be good to know when it does :)

Will do, I put it on my todo list. :-)