Complete subcommands 'add' and 'prune', as well as their respective
options --force, --detach, --dry-run, --verbose, and --expire. Also
complete 'refname' in "git worktree add [-b <newbranch>] <path>
<refname>".

Signed-off-by: Eric Sunshine <[email protected]>
---

This is RFC since this is my first foray into the Git completion script,
and there are likely better and more idiomatic ways to accomplish this.

 contrib/completion/git-completion.bash | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/contrib/completion/git-completion.bash 
b/contrib/completion/git-completion.bash
index c97c648..07c34ef 100644
--- a/contrib/completion/git-completion.bash
+++ b/contrib/completion/git-completion.bash
@@ -2564,6 +2564,38 @@ _git_whatchanged ()
        _git_log
 }
 
+_git_worktree ()
+{
+       local subcommands='add prune'
+       local subcommand="$(__git_find_on_cmdline "$subcommands")"
+       local c=2 n=0 refpos=2
+       if [ -z "$subcommand" ]; then
+               __gitcomp "$subcommands"
+       else
+               case "$subcommand,$cur" in
+               add,--*)
+                       __gitcomp "--force --detach"
+                       ;;
+               add,*)
+                       while [ $c -lt $cword ]; do
+                               case "${words[c]}" in
+                               --*) ;;
+                               -[bB]) ((refpos++)) ;;
+                               *) ((n++)) ;;
+                               esac
+                               ((c++))
+                       done
+                       if [ $n -eq $refpos ]; then
+                               __gitcomp_nl "$(__git_refs)"
+                       fi
+                       ;;
+               prune,--*)
+                       __gitcomp "--dry-run --verbose --expire"
+                       ;;
+               esac
+       fi
+}
+
 __git_main ()
 {
        local i c=1 command __git_dir
-- 
2.5.0.rc3.407.g68aafd0

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