completion: use __gitcomp_builtin in _git_checkout

The new completable options are:

--ignore-other-worktrees
--progress

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin/checkout.c

@@ -1118,9 +1118,12 @@ int cmd_checkout(int argc, const char **argv, const char *prefix)
 			    2),
 		OPT_SET_INT('3', "theirs", &opts.writeout_stage, N_("checkout their version for unmerged files"),
 			    3),
-		OPT__FORCE(&opts.force, N_("force checkout (throw away local modifications)"), 0),
+		OPT__FORCE(&opts.force, N_("force checkout (throw away local modifications)"),
+			   PARSE_OPT_NOCOMPLETE),
 		OPT_BOOL('m', "merge", &opts.merge, N_("perform a 3-way merge with the new branch")),
-		OPT_BOOL(0, "overwrite-ignore", &opts.overwrite_ignore, N_("update ignored files (default)")),
+		OPT_BOOL_F(0, "overwrite-ignore", &opts.overwrite_ignore,
+			   N_("update ignored files (default)"),
+			   PARSE_OPT_NOCOMPLETE),
 		OPT_STRING(0, "conflict", &conflict_style, N_("style"),
 			   N_("conflict style (merge or diff3)")),
 		OPT_BOOL('p', "patch", &opts.patch_mode, N_("select hunks interactively")),

contrib/completion/git-completion.bash

@@ -1263,11 +1263,7 @@ _git_checkout ()
 		__gitcomp "diff3 merge" "" "${cur##--conflict=}"
 		;;
 	--*)
-		__gitcomp "
-			--quiet --ours --theirs --track --no-track --merge
-			--conflict= --orphan --patch --detach --ignore-skip-worktree-bits
-			--recurse-submodules --no-recurse-submodules
-			"
+		__gitcomp_builtin checkout "--no-track --no-recurse-submodules"
 		;;
 	*)
 		# check if --track, --no-track, or --no-guess was specified

t/t9902-completion.sh

@@ -1237,17 +1237,19 @@ test_expect_success 'double dash "git" itself' '
 test_expect_success 'double dash "git checkout"' '
 	test_completion "git checkout --" <<-\EOF
 	--quiet Z
+	--detach Z
+	--track Z
+	--orphan=Z
 	--ours Z
 	--theirs Z
-	--track Z
-	--no-track Z
 	--merge Z
-	--conflict=
-	--orphan Z
+	--conflict=Z
 	--patch Z
-	--detach Z
 	--ignore-skip-worktree-bits Z
+	--ignore-other-worktrees Z
 	--recurse-submodules Z
+	--progress Z
+	--no-track Z
 	--no-recurse-submodules Z
 	EOF
 '