[cc:+peff] On Thu, Jan 23, 2020 at 11:32 AM SZEDER Gábor <szeder.dev@xxxxxxxxx> wrote: > On Thu, Jan 23, 2020 at 05:04:09PM +0100, ch wrote: > > I recently updated my Git installation from 2.24.1.windows.2 to > > 2.25.0.windows.1 and from the looks of it the included version of gitk does not > > support being run from non-worktree folders of a repository anymore (like the > > .git folder for example). > I've stumbled upon the same issue when I tried to run 'gitk' in a bare > repository a while ago, but it refused to run with the same error > message. > > Are you sure it's a recent regression? I have no experience with > 'gitk' in Git for Windows, but on Linux this has been broken for quite > some time, namely since 784b7e2f25 (gitk: Fix "External diff" with > separate work tree, 2011-04-04) in the v1.7 era. FWIW, reverting that > commit on top of v2.25.0 makes 'gitk' work again in bare repositories. It's a new regression introduced by 2d92ab32fd (rev-parse: make --show-toplevel without a worktree an error, 2019-11-19), as far as I can tell. I have many times used gitk on bare repositories as an interactive replacement for git-log, so this is a unfortunate bit of fallout from that change. That's not to say that 2d92ab32fd should be reverted, though... perhaps gitk itself needs a bit of a fix.