completion issue for "git worktree add"

[Vincent Lefevre <vincent@xxxxxxxxxx>]

Consider a git working tree where there is some remote branch
"hermite", but no such local branch yet:

qaa% git branch -a | grep hermite
  remotes/origin/hermite

On "git checkout he", [Tab] completes it to "git checkout hermite"
as expected, but not on "git worktree add ../mpfr-hermite he". The
intent is the following from the git-worktree(1) man page:

  If <commit-ish> is a branch name (call it <branch>) and is not
  found, and neither -b nor -B nor --detach are used, but there does
  exist a tracking branch in exactly one remote (call it <remote>)
  with a matching name, treat as equivalent to:

      $ git worktree add --track -b <branch> <path> <remote>/<branch>

-- 
Vincent Lefèvre <vincent@xxxxxxxxxx> - Web: <https://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / Pascaline project (LIP, ENS-Lyon)