Re: [RFC PATCH] completion: support excluding refs

Chris Packham [off-list ref] writes:

Allow completion of refs with a ^ prefix. This allows completion of
commands like 'git log HEAD ^origin/master'.
...
+			[[ "$cur" == ^* ]] && pfx="^"
 			for i in HEAD FETCH_HEAD ORIG_HEAD MERGE_HEAD; do
-				if [ -e "$dir/$i" ]; then echo $i; fi
+				if [ -e "$dir/$i" ]; then echo $pfx$i; fi
 			done
 			format="refname:short"
 			refs="refs/tags refs/heads refs/remotes"
 			;;
 		esac
-		git --git-dir="$dir" for-each-ref --format="%($format)" \
+		git --git-dir="$dir" for-each-ref --format="$pfx%($format)" \
 			$refs

That looks like a reasonable approach to me (but I am no expert in
this area myself).