[PATCH 3/8] checkout: validate stage and merge option compatibility in checkout_paths()

[Junio C Hamano <gitster@pobox.com>]

In checkout_main(), checking that no more than one of --ours/--theirs,
--force, and --merge is specified is performed when pathspecs are
present, before dispatching to checkout_paths().  Checking out a
branch does not use index stages, so this validation belongs in
checkout_paths().

Move the incompatibility check from checkout_main() into
checkout_paths().

Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 builtin/checkout.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/builtin/checkout.c b/builtin/checkout.c
index 14542626e9..e3d23256e2 100644
--- a/builtin/checkout.c
+++ b/builtin/checkout.c
@@ -591,6 +591,10 @@ static int checkout_paths(const struct checkout_opts *opts,
 		die(_("'%s', '%s', or '%s' cannot be used when checking out of a tree"),
 		    "--merge", "--ours", "--theirs");
 
+	if (1 < !!opts->writeout_stage + !!opts->force + !!opts->merge)
+		die(_("git checkout: --ours/--theirs, --force and --merge are incompatible when\n"
+		      "checking out of the index."));
+
 	if (opts->patch_mode) {
 		enum add_p_mode patch_mode;
 		struct interactive_options interactive_opts = {
@@ -2063,11 +2067,7 @@ static int checkout_main(int argc, const char **argv, const char *prefix,
 
 	opts->pathspec.recursive = 1;
 
-	if (opts->pathspec.nr) {
-		if (1 < !!opts->writeout_stage + !!opts->force + !!opts->merge)
-			die(_("git checkout: --ours/--theirs, --force and --merge are incompatible when\n"
-			      "checking out of the index."));
-	} else {
+	if (!opts->pathspec.nr) {
 		if (opts->accept_pathspec && !opts->empty_pathspec_ok &&
 		    !opts->patch_mode)	/* patch mode is special */
 			die(_("you must specify path(s) to restore"));
-- 
2.55.0-884-g76cf8659c2