Hi, > This is the first time I am sending a bug report here, so if I have > not met the criteria please let me know. > I found that at: > https://github.com/git/git/blob/master/contrib/completion/git-completion.bash#L371, > the usage of refname:strip=2 generates error: > > fatal: unknown refname: format strip=2. > > I am using git version 1.9.1. However using %(refname:short), I > believe produces intended behaviour. The for-each-ref format modifier ':strip=<N>' was introduced in v2.7.1~15^2 (tag: do not show ambiguous tag names as "tags/foo", 2016-01-25) and the completion script started using it in v2.13.0-rc0~46^2~8 (completion: don't disambiguate tags and branches, 2017-03-23). It seems you're using an old Git with a recentish completion script. You could either upgrade Git, or use the completion script that was shipped with it. Gábor