Subject: [PATCH v1 03/11] restore: make pathspec mandatory

From: Nguyễn Thái Ngọc Duy <[email-masked]>
Date: Fri, 8 Mar 2019 17:16:47 +0700

"git restore" without arguments does not make much sense when
it's about restoring files (what files now?). We could default to
either

    git restore .

or

    git restore :/

Neither is intuitive. Make the user always give pathspec, force the
user to think the scope of restore they want because this is a
destructive operation.

"git restore -p" without pathspec is an exception to this
because it really is a separate mode. It will be treated as running
patch mode on the whole worktree.

Signed-off-by: Nguyễn Thái Ngọc Duy <[email-masked]>
---
 builtin/checkout.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/builtin/checkout.c b/builtin/checkout.c
index 838343d6aa..c52ce13d2a 100644
--- a/builtin/checkout.c
+++ b/builtin/checkout.c
@@ -61,6 +61,7 @@ struct checkout_opts {
 	int accept_pathspec;
 	int switch_branch_doing_nothing_is_ok;
 	int only_merge_on_switching_branches;
+	int empty_pathspec_ok;
 
 	const char *new_branch;
 	const char *new_branch_force;
@@ -1427,6 +1428,10 @@ static int checkout_main(int argc, const char **argv, const char *prefix,
 			die(_("reference is not a tree: %s"), opts->from_treeish);
 	}
 
+	if (opts->accept_pathspec && !opts->empty_pathspec_ok && !argc &&
+	    !opts->patch_mode)	/* patch mode is special */
+		die(_("pathspec is required"));
+
 	if (argc) {
 		parse_pathspec(&opts->pathspec, 0,
 			       opts->patch_mode ? PATHSPEC_PREFIX_ORIGIN : 0,
@@ -1511,6 +1516,7 @@ int cmd_checkout(int argc, const char **argv, const char *prefix)
 	opts.accept_ref = 1;
 	opts.accept_pathspec = 1;
 	opts.implicit_detach = 1;
+	opts.empty_pathspec_ok = 1;
 
 	options = parse_options_dup(checkout_options);
 	options = add_common_options(&opts, options);
@@ -1570,6 +1576,7 @@ int cmd_restore(int argc, const char **argv, const char *prefix)
 	memset(&opts, 0, sizeof(opts));
 	opts.accept_ref = 0;
 	opts.accept_pathspec = 1;
+	opts.empty_pathspec_ok = 0;
 
 	options = parse_options_dup(restore_options);
 	options = add_common_options(&opts, options);
-- 
2.21.0.rc1.337.gdf7f8d0522