[PATCH] reset: reject --no-(mixed|soft|hard|merge|keep) option

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"git reset --no-mixed" behaved exactly like "git reset --mixed",
which was nonsense.

If there were only two kinds, e.g. "mixed" vs "separate", it might
have made sense to make "git reset --no-mixed" behave identically to
"git reset --separate" and vice-versa, but because we have many
types of reset, lets just forbid "--no-mixed" and negated form of
other types.

Signed-off-by: Junio C Hamano <gitster@xxxxxxxxx>
---
 builtin/reset.c  | 29 ++++++++++++++++++-----------
 t/t7102-reset.sh | 10 ++++++++++
 2 files changed, 28 insertions(+), 11 deletions(-)

diff --git a/builtin/reset.c b/builtin/reset.c
index f99f32d580..ac4901e003 100644
--- a/builtin/reset.c
+++ b/builtin/reset.c
@@ -334,18 +334,25 @@ int cmd_reset(int argc, const char **argv, const char *prefix)
 		OPT__QUIET(&quiet, N_("be quiet, only report errors")),
 		OPT_BOOL(0, "no-refresh", &no_refresh,
 				N_("skip refreshing the index after reset")),
-		OPT_SET_INT(0, "mixed", &reset_type,
-						N_("reset HEAD and index"), MIXED),
-		OPT_SET_INT(0, "soft", &reset_type, N_("reset only HEAD"), SOFT),
-		OPT_SET_INT(0, "hard", &reset_type,
-				N_("reset HEAD, index and working tree"), HARD),
-		OPT_SET_INT(0, "merge", &reset_type,
-				N_("reset HEAD, index and working tree"), MERGE),
-		OPT_SET_INT(0, "keep", &reset_type,
-				N_("reset HEAD but keep local changes"), KEEP),
+		OPT_SET_INT_F(0, "mixed", &reset_type,
+			      N_("reset HEAD and index"),
+			      MIXED, PARSE_OPT_NONEG),
+		OPT_SET_INT_F(0, "soft", &reset_type,
+			      N_("reset only HEAD"),
+			      SOFT, PARSE_OPT_NONEG),
+		OPT_SET_INT_F(0, "hard", &reset_type,
+			      N_("reset HEAD, index and working tree"),
+			      HARD, PARSE_OPT_NONEG),
+		OPT_SET_INT_F(0, "merge", &reset_type,
+			      N_("reset HEAD, index and working tree"),
+			      MERGE, PARSE_OPT_NONEG),
+		OPT_SET_INT_F(0, "keep", &reset_type,
+			      N_("reset HEAD but keep local changes"),
+			      KEEP, PARSE_OPT_NONEG),
 		OPT_CALLBACK_F(0, "recurse-submodules", NULL,
-			    "reset", "control recursive updating of submodules",
-			    PARSE_OPT_OPTARG, option_parse_recurse_submodules_worktree_updater),
+			       "reset", "control recursive updating of submodules",
+			       PARSE_OPT_OPTARG,
+			       option_parse_recurse_submodules_worktree_updater),
 		OPT_BOOL('p', "patch", &patch_mode, N_("select hunks interactively")),
 		OPT_BOOL('N', "intent-to-add", &intent_to_add,
 				N_("record only the fact that removed paths will be added later")),
diff --git a/t/t7102-reset.sh b/t/t7102-reset.sh
index 22477f3a31..4287863ae6 100755
--- a/t/t7102-reset.sh
+++ b/t/t7102-reset.sh
@@ -71,6 +71,16 @@ check_changes () {
	done | test_cmp .cat_expect -
 }
 
+# no negated form for various type of resets
+for opt in soft mixed hard merge keep
+do
+	test_expect_success "no 'git reset --no-$opt'" '
+		test_when_finished "rm -f err" &&
+		test_must_fail git reset --no-$opt 2>err &&
+		grep "error: unknown option .no-$opt." err
+	'
+done
+
 test_expect_success 'reset --hard message' '
 	hex=$(git log -1 --format="%h") &&
 	git reset --hard >.actual &&
-- 
2.41.0-376-gcba07a324d




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