restore: reject invalid combinations with --staged

git-checkout rejects plenty of invalid option combinations. Since git-checkout is equivalent of either git restore --source --staged --worktree or git restore --worktree that still leaves the new mode 'git restore --index' unprotected. Reject some more invalid option combinations. The other new mode 'restore --source --worktree' does not need anything else. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Nguyễn Thái Ngọc Duy committed Apr 25, 2019 at 16:45 UTC e3ddd3b5e583e62d874f56f8c88603ad0ebafd5e
1 file changed +10
builtin/checkout.c
+10
@@ -433,6 +433,16 @@ static int checkout_paths(const struct checkout_opts *opts,
433 die(_("'%s' must be used when '%s' is not specified"),
434 "--worktree", "--source");
435
436 + if (opts->checkout_index && !opts->checkout_worktree &&
437 + opts->writeout_stage)
438 + die(_("'%s' or '%s' cannot be used with %s"),
439 + "--ours", "--theirs", "--staged");
440 +
441 + if (opts->checkout_index && !opts->checkout_worktree &&
442 + opts->merge)
443 + die(_("'%s' or '%s' cannot be used with %s"),
444 + "--merge", "--conflict", "--staged");
445 +
446 if (opts->patch_mode) {
447 const char *patch_mode;
448