Re: [PATCH 1/1] completion: complete <rev> in `git worktree add <path> <rev>`

["SZEDER Gábor" <szeder.dev@gmail.com>]

On Mon, Dec 10, 2018 at 07:10:46AM -0800, Johannes Schindelin via GitGitGadget wrote:
> From: Johannes Schindelin <johannes.schindelin@gmx.de>
> 
> The second non-option argument to `git worktree`'s `add` command is an
> optional revision. Let's complete it.
> 
> Inspired by https://github.com/git-for-windows/git/pull/1681.
> 
> Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
> ---
>  contrib/completion/git-completion.bash | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/contrib/completion/git-completion.bash b/contrib/completion/git-completion.bash
> index 9e8ec95c3c..4194b4a2e7 100644
> --- a/contrib/completion/git-completion.bash
> +++ b/contrib/completion/git-completion.bash
> @@ -2773,6 +2773,11 @@ _git_worktree ()
>  		add,--*)
>  			__gitcomp_builtin worktree_add
>  			;;
> +		add,*)
> +			if [ $(__git_count_arguments "worktree") -eq 2 ]; then
> +				__git_complete_refs
> +			fi
> +			;;

Unfortunately, this seems to work only in the following case:

  git worktree add path <TAB>

i.e. when the two-be-completed word is still empty.  However,

  git worktree add path m<TAB>

doesn't work anymore, as it lists paths instead of refs.  Furthermore,

  git worktree add --detach path <TAB>
  git worktree add --detach path m<TAB>
  git worktree add -b newbranch path <TAB>

list paths as well.

However, I presume unintentionally,

  git worktree add -b <TAB>

does the right thing and lists refs, but with

  git worktree add -b m<TAB>

we are back at paths instead of refs.  OTOH,

  git worktree add --detach <TAB>
  git worktree add --lock <TAB>

will erroneously list refs.

I wrote a completion function for 'git worktree' a long while ago,
back when it had only two subcommands, which did mostly the right
thing, but I found it too convoluted for serious submission.  Here it
is for inspiration:

  https://public-inbox.org/git/1440190256-21794-1-git-send-email-szeder@ira.uka.de/

>  		list,--*)
>  			__gitcomp_builtin worktree_list
>  			;;
> -- 
> gitgitgadget