pack-objects: fix --no-keep-true-parents

Since 99fb6e0 (pack-objects: convert to use parse_options(),
2012-02-01) git pack-objects has accepted --no-keep-true-parents, but
this option does the same as --keep-true-parents.  That's because it's
defined using OPT_SET_INT with a value of 0, which sets 0 when negated
as well.

Turn --no-keep-true-parents into the opposite of --keep-true-parents by
using OPT_BOOL and storing the option's status directly in a variable
named "grafts_keep_true_parents" instead of in negative form in
"grafts_replace_parents".

Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin/pack-objects.c

@@ -4256,8 +4256,8 @@ int cmd_pack_objects(int argc, const char **argv, const char *prefix)
 				N_("ignore this pack")),
 		OPT_INTEGER(0, "compression", &pack_compression_level,
 			    N_("pack compression level")),
-		OPT_SET_INT(0, "keep-true-parents", &grafts_replace_parents,
-			    N_("do not hide commits by grafts"), 0),
+		OPT_BOOL(0, "keep-true-parents", &grafts_keep_true_parents,
+			 N_("do not hide commits by grafts")),
 		OPT_BOOL(0, "use-bitmap-index", &use_bitmap_index,
 			 N_("use a bitmap index if available to speed up counting objects")),
 		OPT_SET_INT(0, "write-bitmap-index", &write_bitmap_index,

commit.c

@@ -516,7 +516,7 @@ int parse_commit_buffer(struct repository *r, struct commit *item, const void *b
 		 * The clone is shallow if nr_parent < 0, and we must
 		 * not traverse its real parents even when we unhide them.
 		 */
-		if (graft && (graft->nr_parent < 0 || grafts_replace_parents))
+		if (graft && (graft->nr_parent < 0 || !grafts_keep_true_parents))
 			continue;
 		new_parent = lookup_commit(r, &parent);
 		if (!new_parent)

environment.c

@@ -75,7 +75,7 @@ enum push_default_type push_default = PUSH_DEFAULT_UNSPECIFIED;
 #endif
 enum object_creation_mode object_creation_mode = OBJECT_CREATION_MODE;
 char *notes_ref_name;
-int grafts_replace_parents = 1;
+int grafts_keep_true_parents;
 int core_apply_sparse_checkout;
 int core_sparse_checkout_cone;
 int sparse_expect_files_outside_of_patterns;

environment.h

@@ -194,7 +194,7 @@ extern enum object_creation_mode object_creation_mode;
 
 extern char *notes_ref_name;
 
-extern int grafts_replace_parents;
+extern int grafts_keep_true_parents;
 
 extern int repository_format_precious_objects;
 extern int repository_format_worktree_config;