Merge pull request #1469 from libgit2/vmg/unified-revision

Unified rev-parse, with a revision object

13 files changed, 239 insertions, 139 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index dfca73630..6bd25aacc 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -388,4 +388,7 @@ IF (BUILD_EXAMPLES)
 
 	ADD_EXECUTABLE(git-showindex examples/showindex.c)
 	TARGET_LINK_LIBRARIES(git-showindex git2)
+
+	ADD_EXECUTABLE(git-rev-list examples/rev-list.c)
+	TARGET_LINK_LIBRARIES(git-rev-list git2)
 ENDIF ()
diff --git a/examples/Makefile b/examples/Makefile
index b306d4800..2c18731fd 100644
--- a/examples/Makefile
+++ b/examples/Makefile
@@ -3,7 +3,7 @@
 CC = gcc
 CFLAGS = -g -I../include -I../src -Wall -Wextra -Wmissing-prototypes -Wno-missing-field-initializers
 LFLAGS = -L../build -lgit2 -lz
-APPS = general showindex diff
+APPS = general showindex diff rev-list
 
 all: $(APPS)
 
diff --git a/examples/diff.c b/examples/diff.c
index a153b493b..2ef405665 100644
--- a/examples/diff.c
+++ b/examples/diff.c
@@ -17,8 +17,8 @@ static int resolve_to_tree(
 	int err = 0;
 	git_object *obj = NULL;
 
-	if (git_revparse_single(&obj, repo, identifier) < 0)
-		return GIT_ENOTFOUND;
+	if ((err = git_revparse_single(&obj, repo, identifier)) < 0)
+		return err;
 
 	switch (git_object_type(obj)) {
 	case GIT_OBJ_TREE:
diff --git a/examples/rev-list.c b/examples/rev-list.c
index b7e466f9e..d9ec15f76 100644
--- a/examples/rev-list.c
+++ b/examples/rev-list.c
@@ -14,12 +14,12 @@ static void check_error(int error_code, const char *action)
 	exit(1);
 }
 
-static int push_commit(git_revwalk *walk, git_object *obj, int hide)
+static int push_commit(git_revwalk *walk, const git_oid *oid, int hide)
 {
 	if (hide)
-		return git_revwalk_hide(walk, git_object_id(obj));
+		return git_revwalk_hide(walk, oid);
 	else
-		return git_revwalk_push(walk, git_object_id(obj));
+		return git_revwalk_push(walk, oid);
 }
 
 static int push_spec(git_repository *repo, git_revwalk *walk, const char *spec, int hide)
@@ -27,35 +27,39 @@ static int push_spec(git_repository *repo, git_revwalk *walk, const char *spec,
 	int error;
 	git_object *obj;
 
-	if ((error = git_revparse_single(&obj, repo, spec)))
+	if ((error = git_revparse_single(&obj, repo, spec)) < 0)
 		return error;
-	return push_commit(walk, obj, hide);
+
+	error = push_commit(walk, git_object_id(obj), hide);
+	git_object_free(obj);
+	return error;
 }
 
 static int push_range(git_repository *repo, git_revwalk *walk, const char *range, int hide)
 {
-	git_object *left, *right;
-	int threedots;
+	git_revspec revspec;
 	int error = 0;
 
-	if ((error = git_revparse_rangelike(&left, &right, &threedots, repo, range)))
+	if ((error = git_revparse(&revspec, repo, range)))
 		return error;
-	if (threedots) {
+
+	if (revspec.flags & GIT_REVPARSE_MERGE_BASE) {
 		/* TODO: support "<commit>...<commit>" */
 		return GIT_EINVALIDSPEC;
 	}
 
-	if ((error = push_commit(walk, left, !hide)))
+	if ((error = push_commit(walk, git_object_id(revspec.from), !hide)))
 		goto out;
-	error = push_commit(walk, right, hide);
 
-  out:
-	git_object_free(left);
-	git_object_free(right);
+	error = push_commit(walk, git_object_id(revspec.to), hide);
+
+out:
+	git_object_free(revspec.from);
+	git_object_free(revspec.to);
 	return error;
 }
 
-static int revwalk_parseopts(git_repository *repo, git_revwalk *walk, int nopts, const char *const *opts)
+static int revwalk_parseopts(git_repository *repo, git_revwalk *walk, int nopts, char **opts)
 {
 	int hide, i, error;
 	unsigned int sorting = GIT_SORT_NONE;
diff --git a/include/git2/revparse.h b/include/git2/revparse.h
index edd8b3cce..e155c7012 100644
--- a/include/git2/revparse.h
+++ b/include/git2/revparse.h
@@ -21,29 +21,59 @@
 GIT_BEGIN_DECL
 
 /**
- * Find an object, as specified by a revision string. See `man gitrevisions`, or the documentation
- * for `git rev-parse` for information on the syntax accepted.
+ * Find a single object, as specified by a revision string. See `man gitrevisions`,
+ * or http://git-scm.com/docs/git-rev-parse.html#_specifying_revisions for
+ * information on the syntax accepted.
  *
  * @param out pointer to output object
  * @param repo the repository to search in
  * @param spec the textual specification for an object
- * @return 0 on success, GIT_ENOTFOUND, GIT_EAMBIGUOUS,
- * GIT_EINVALIDSPEC or an error code
+ * @return 0 on success, GIT_ENOTFOUND, GIT_EAMBIGUOUS, GIT_EINVALIDSPEC or an error code
  */
 GIT_EXTERN(int) git_revparse_single(git_object **out, git_repository *repo, const char *spec);
 
+
 /**
- * Parse a string with the form of a revision range, as accepted by
- * `git rev-list`, `git diff`, and others.
+ * Revparse flags.  These indicate the intended behavior of the spec passed to
+ * git_revparse.
+ */
+typedef enum {
+	/** The spec targeted a single object. */
+	GIT_REVPARSE_SINGLE         = 1 << 0,
+	/** The spec targeted a range of commits. */
+	GIT_REVPARSE_RANGE          = 1 << 1,
+	/** The spec used the '...' operator, which invokes special semantics. */
+	GIT_REVPARSE_MERGE_BASE     = 1 << 2,
+} git_revparse_mode_t;
+
+/**
+ * Git Revision Spec: output of a `git_revparse` operation
+ */
+typedef struct {
+	/** The left element of the revspec; must be freed by the user */
+	git_object *from;
+	/** The right element of the revspec; must be freed by the user */
+	git_object *to;
+	/** The intent of the revspec */
+	unsigned int flags;
+} git_revspec;
+
+/**
+ * Parse a revision string for `from`, `to`, and intent. See `man gitrevisions` or
+ * http://git-scm.com/docs/git-rev-parse.html#_specifying_revisions for information
+ * on the syntax accepted.
  *
- * @param left (output) the left-hand commit
- * @param right (output) the right-hand commit
- * @param threedots (output) 0 if the endpoints are separated by two dots, 1 if by three
- * @param repo the repository to find the commits in
- * @param rangelike the rangelike string to be parsed
- * @return 0 on success, or any error `git_revparse_single` can return
+ * @param revspec Pointer to an user-allocated git_revspec struct where the result
+ *	of the rev-parse will be stored
+ * @param repo the repository to search in
+ * @param spec the rev-parse spec to parse
+ * @return 0 on success, GIT_INVALIDSPEC, GIT_ENOTFOUND, GIT_EAMBIGUOUS or an error code
  */
-GIT_EXTERN(int) git_revparse_rangelike(git_object **left, git_object **right, int *threedots, git_repository *repo, const char *rangelike);
+GIT_EXTERN(int) git_revparse(
+		git_revspec *revspec,
+		git_repository *repo,
+		const char *spec);
+
 
 /** @} */
 GIT_END_DECL
diff --git a/src/push.c b/src/push.c
index f81a0aee9..cec4c64af 100644
--- a/src/push.c
+++ b/src/push.c
@@ -99,19 +99,17 @@ static int check_lref(git_push *push, char *ref)
 	/* lref must be resolvable to an existing object */
 	git_object *obj;
 	int error = git_revparse_single(&obj, push->repo, ref);
+	git_object_free(obj);
 
-	if (error) {
-		if (error == GIT_ENOTFOUND)
-			giterr_set(GITERR_REFERENCE,
-				"src refspec '%s' does not match any existing object", ref);
-		else
-			giterr_set(GITERR_INVALID, "Not a valid reference '%s'", ref);
+	if (!error)
+		return 0;
 
-		return -1;
-	} else
-		git_object_free(obj);
-
-	return 0;
+	if (error == GIT_ENOTFOUND)
+		giterr_set(GITERR_REFERENCE,
+			"src refspec '%s' does not match any existing object", ref);
+	else
+		giterr_set(GITERR_INVALID, "Not a valid reference '%s'", ref);
+	return -1;
 }
 
 static int parse_refspec(git_push *push, push_spec **spec, const char *str)
diff --git a/src/revparse.c b/src/revparse.c
index fd62a2fd2..74635ed04 100644
--- a/src/revparse.c
+++ b/src/revparse.c
@@ -107,7 +107,7 @@ static int build_regex(regex_t *regex, const char *pattern)
 	error = regcomp(regex, pattern, REG_EXTENDED);
 	if (!error)
 		return 0;
-	
+
 	error = giterr_set_regex(regex, error);
 
 	regfree(regex);
@@ -125,7 +125,7 @@ static int maybe_describe(git_object**out, git_repository *repo, const char *spe
 
 	if (substr == NULL)
 		return GIT_ENOTFOUND;
-	
+
 	if (build_regex(&regex, ".+-[0-9]+-g[0-9a-fA-F]+") < 0)
 		return -1;
 
@@ -358,7 +358,7 @@ static int retrieve_remote_tracking_reference(git_reference **base_ref, const ch
 
 	if ((error = git_branch_upstream(&tracking, ref)) < 0)
 		goto cleanup;
-	
+
 	*base_ref = tracking;
 
 cleanup:
@@ -508,7 +508,7 @@ static int walk_and_search(git_object **out, git_revwalk *walk, regex_t *regex)
 	int error;
 	git_oid oid;
 	git_object *obj;
-	
+
 	while (!(error = git_revwalk_next(&oid, walk))) {
 
 		error = git_object_lookup(&obj, git_revwalk_repository(walk), &oid, GIT_OBJ_COMMIT);
@@ -537,7 +537,7 @@ static int handle_grep_syntax(git_object **out, git_repository *repo, const git_
 
 	if ((error = build_regex(&preg, pattern)) < 0)
 		return error;
-		
+
 	if ((error = git_revwalk_new(&walk, repo)) < 0)
 		goto cleanup;
 
@@ -551,7 +551,7 @@ static int handle_grep_syntax(git_object **out, git_repository *repo, const git_
 			goto cleanup;
 
 	error = walk_and_search(out, walk, &preg);
-		
+
 cleanup:
 	regfree(&preg);
 	git_revwalk_free(walk);
@@ -868,27 +868,45 @@ cleanup:
 	return error;
 }
 
-int git_revparse_rangelike(git_object **left, git_object **right, int *threedots, git_repository *repo, const char *rangelike)
+
+int git_revparse(
+	git_revspec *revspec,
+	git_repository *repo,
+	const char *spec)
 {
+	const char *dotdot;
 	int error = 0;
-	const char *p, *q;
-	char *revspec;
 
-	p = strstr(rangelike, "..");
-	if (!p) {
-		giterr_set(GITERR_INVALID, "Malformed range (or rangelike syntax): %s", rangelike);
-		return GIT_EINVALIDSPEC;
-	} else if (p[2] == '.') {
-		*threedots = 1;
-		q = p + 3;
+	assert(revspec && repo && spec);
+
+	memset(revspec, 0x0, sizeof(*revspec));
+
+	if ((dotdot = strstr(spec, "..")) != NULL) {
+		char *lstr;
+		const char *rstr;
+		revspec->flags = GIT_REVPARSE_RANGE;
+
+		lstr = git__substrdup(spec, dotdot - spec);
+		rstr = dotdot + 2;
+		if (dotdot[2] == '.') {
+			revspec->flags |= GIT_REVPARSE_MERGE_BASE;
+			rstr++;
+		}
+
+		if ((error = git_revparse_single(&revspec->from, repo, lstr)) < 0) {
+			return error;
+		}
+
+		if ((error = git_revparse_single(&revspec->to, repo, rstr)) < 0) {
+			return error;
+		}
+
+		git__free((void*)lstr);
 	} else {
-		*threedots = 0;
-		q = p + 2;
+		revspec->flags = GIT_REVPARSE_SINGLE;
+		error = git_revparse_single(&revspec->from, repo, spec);
 	}
 
-	revspec = git__substrdup(rangelike, p - rangelike);
-	error = (git_revparse_single(left, repo, revspec)
-	      || git_revparse_single(right, repo, q));
-	git__free(revspec);
 	return error;
 }
+
diff --git a/src/revwalk.c b/src/revwalk.c
index c1071843b..16f06624d 100644
--- a/src/revwalk.c
+++ b/src/revwalk.c
@@ -231,25 +231,26 @@ int git_revwalk_push_ref(git_revwalk *walk, const char *refname)
 
 int git_revwalk_push_range(git_revwalk *walk, const char *range)
 {
-	git_object *left, *right;
-	int threedots;
+	git_revspec revspec;
 	int error = 0;
 
-	if ((error = git_revparse_rangelike(&left, &right, &threedots, walk->repo, range)))
+	if ((error = git_revparse(&revspec, walk->repo, range)))
 		return error;
-	if (threedots) {
+
+	if (revspec.flags & GIT_REVPARSE_MERGE_BASE) {
 		/* TODO: support "<commit>...<commit>" */
 		giterr_set(GITERR_INVALID, "Symmetric differences not implemented in revwalk");
 		return GIT_EINVALIDSPEC;
 	}
 
-	if ((error = push_commit(walk, git_object_id(left), 1)))
+	if ((error = push_commit(walk, git_object_id(revspec.from), 1)))
 		goto out;
-	error = push_commit(walk, git_object_id(right), 0);
 
-  out:
-	git_object_free(left);
-	git_object_free(right);
+	error = push_commit(walk, git_object_id(revspec.to), 0);
+
+out:
+	git_object_free(revspec.from);
+	git_object_free(revspec.to);
 	return error;
 }
 
diff --git a/tests-clar/checkout/tree.c b/tests-clar/checkout/tree.c
index 5a2eacea1..0748b22e0 100644
--- a/tests-clar/checkout/tree.c
+++ b/tests-clar/checkout/tree.c
@@ -30,7 +30,6 @@ void test_checkout_tree__cannot_checkout_a_non_treeish(void)
 {
 	/* blob */
 	cl_git_pass(git_revparse_single(&g_object, g_repo, "a71586c1dfe8a71c6cbf6c129f404c5642ff31bd"));
-
 	cl_git_fail(git_checkout_tree(g_repo, g_object, NULL));
 }
 
@@ -283,8 +282,7 @@ void test_checkout_tree__can_checkout_with_pattern(void)
 	g_opts.checkout_strategy =
 		GIT_CHECKOUT_FORCE | GIT_CHECKOUT_REMOVE_UNTRACKED;
 
-	cl_git_pass(git_revparse_single(&g_object, g_repo,
-		"8496071c1b46c854b31185ea97743be6a8774479"));
+	cl_git_pass(git_revparse_single(&g_object, g_repo, "8496071c1b46c854b31185ea97743be6a8774479"));
 
 	cl_git_pass(git_checkout_tree(g_repo, g_object, &g_opts));
 	cl_git_pass(
@@ -323,8 +321,7 @@ void test_checkout_tree__can_disable_pattern_match(void)
 	g_opts.checkout_strategy =
 		GIT_CHECKOUT_FORCE | GIT_CHECKOUT_REMOVE_UNTRACKED;
 
-	cl_git_pass(git_revparse_single(&g_object, g_repo,
-		"8496071c1b46c854b31185ea97743be6a8774479"));
+	cl_git_pass(git_revparse_single(&g_object, g_repo, "8496071c1b46c854b31185ea97743be6a8774479"));
 
 	cl_git_pass(git_checkout_tree(g_repo, g_object, &g_opts));
 	cl_git_pass(
diff --git a/tests-clar/clone/nonetwork.c b/tests-clar/clone/nonetwork.c
index 2c4cba4eb..c4b482234 100644
--- a/tests-clar/clone/nonetwork.c
+++ b/tests-clar/clone/nonetwork.c
@@ -214,23 +214,23 @@ void test_clone_nonetwork__can_checkout_given_branch(void)
 
 void test_clone_nonetwork__can_detached_head(void)
 {
-	git_object *commit;
+	git_object *obj;
 	git_repository *cloned;
 	git_reference *cloned_head;
 
 	cl_git_pass(git_clone(&g_repo, cl_git_fixture_url("testrepo.git"), "./foo", &g_options));
 
-	cl_git_pass(git_revparse_single(&commit, g_repo, "master~1"));
-	cl_git_pass(git_repository_set_head_detached(g_repo, git_object_id(commit)));
+	cl_git_pass(git_revparse_single(&obj, g_repo, "master~1"));
+	cl_git_pass(git_repository_set_head_detached(g_repo, git_object_id(obj)));
 
 	cl_git_pass(git_clone(&cloned, "./foo", "./foo1", &g_options));
 
 	cl_assert(git_repository_head_detached(cloned));
 
 	cl_git_pass(git_repository_head(&cloned_head, cloned));
-	cl_assert(!git_oid_cmp(git_object_id(commit), git_reference_target(cloned_head)));
+	cl_assert(!git_oid_cmp(git_object_id(obj), git_reference_target(cloned_head)));
 
-	git_commit_free((git_commit*)commit);
+	git_object_free(obj);
 	git_reference_free(cloned_head);
 	git_repository_free(cloned);
 
diff --git a/tests-clar/refs/revparse.c b/tests-clar/refs/revparse.c
index 66ee391a7..74472b175 100644
--- a/tests-clar/refs/revparse.c
+++ b/tests-clar/refs/revparse.c
@@ -27,6 +27,37 @@ static void test_object_inrepo(const char *spec, const char *expected_oid, git_r
 	git_object_free(obj);
 }
 
+static void test_id_inrepo(
+	const char *spec,
+	const char *expected_left,
+	const char *expected_right,
+	git_revparse_mode_t expected_flags,
+	git_repository *repo)
+{
+	git_revspec revspec;
+	int error = git_revparse(&revspec, repo, spec);
+
+	if (expected_left) {
+		char str[64] = {0};
+		cl_assert_equal_i(0, error);
+		git_oid_fmt(str, git_object_id(revspec.from));
+		cl_assert_equal_s(str, expected_left);
+		git_object_free(revspec.from);
+	} else {
+		cl_assert_equal_i(GIT_ENOTFOUND, error);
+	}
+
+	if (expected_right) {
+		char str[64] = {0};
+		git_oid_fmt(str, git_object_id(revspec.to));
+		cl_assert_equal_s(str, expected_right);
+		git_object_free(revspec.to);
+	}
+
+	if (expected_flags)
+		cl_assert_equal_i(expected_flags, revspec.flags);
+}
+
 static void test_object(const char *spec, const char *expected_oid)
 {
 	test_object_inrepo(spec, expected_oid, g_repo);
@@ -35,30 +66,38 @@ static void test_object(const char *spec, const char *expected_oid)
 static void test_rangelike(const char *rangelike,
 						   const char *expected_left,
 						   const char *expected_right,
-						   int expected_threedots)
+						   git_revparse_mode_t expected_revparseflags)
 {
 	char objstr[64] = {0};
-	git_object *left = NULL, *right = NULL;
-	int threedots;
+	git_revspec revspec;
 	int error;
 
-	error = git_revparse_rangelike(&left, &right, &threedots, g_repo, rangelike);
+	error = git_revparse(&revspec, g_repo, rangelike);
 
 	if (expected_left != NULL) {
 		cl_assert_equal_i(0, error);
-		cl_assert_equal_i(threedots, expected_threedots);
-		git_oid_fmt(objstr, git_object_id(left));
+		cl_assert_equal_i(revspec.flags, expected_revparseflags);
+		git_oid_fmt(objstr, git_object_id(revspec.from));
 		cl_assert_equal_s(objstr, expected_left);
-		git_oid_fmt(objstr, git_object_id(right));
+		git_oid_fmt(objstr, git_object_id(revspec.to));
 		cl_assert_equal_s(objstr, expected_right);
 	} else
 		cl_assert(error != 0);
 
-	git_object_free(left);
-	git_object_free(right);
+	git_object_free(revspec.from);
+	git_object_free(revspec.to);
 }
 
 
+static void test_id(
+	const char *spec,
+	const char *expected_left,
+	const char *expected_right,
+	git_revparse_mode_t expected_flags)
+{
+	test_id_inrepo(spec, expected_left, expected_right, expected_flags, g_repo);
+}
+
 void test_refs_revparse__initialize(void)
 {
 	cl_git_pass(git_repository_open(&g_repo, cl_fixture("testrepo.git")));
@@ -76,7 +115,7 @@ void test_refs_revparse__nonexistant_object(void)
 	test_object("this-does-not-exist~2", NULL);
 }
 
-static void assert_invalid_spec(const char *invalid_spec)
+static void assert_invalid_single_spec(const char *invalid_spec)
 {
 	cl_assert_equal_i(
 		GIT_EINVALIDSPEC, git_revparse_single(&g_obj, g_repo, invalid_spec));
@@ -84,9 +123,9 @@ static void assert_invalid_spec(const char *invalid_spec)
 
 void test_refs_revparse__invalid_reference_name(void)
 {
-	assert_invalid_spec("this doesn't make sense");
-	assert_invalid_spec("Inv@{id");
-	assert_invalid_spec("");
+	assert_invalid_single_spec("this doesn't make sense");
+	assert_invalid_single_spec("Inv@{id");
+	assert_invalid_single_spec("");
 }
 
 void test_refs_revparse__shas(void)
@@ -125,11 +164,11 @@ void test_refs_revparse__describe_output(void)
 
 void test_refs_revparse__nth_parent(void)
 {
-	assert_invalid_spec("be3563a^-1");
-	assert_invalid_spec("^");
-	assert_invalid_spec("be3563a^{tree}^");
-	assert_invalid_spec("point_to_blob^{blob}^");
-	assert_invalid_spec("this doesn't make sense^1");
+	assert_invalid_single_spec("be3563a^-1");
+	assert_invalid_single_spec("^");
+	assert_invalid_single_spec("be3563a^{tree}^");
+	assert_invalid_single_spec("point_to_blob^{blob}^");
+	assert_invalid_single_spec("this doesn't make sense^1");
 
 	test_object("be3563a^1", "9fd738e8f7967c078dceed8190330fc8648ee56a");
 	test_object("be3563a^", "9fd738e8f7967c078dceed8190330fc8648ee56a");
@@ -156,7 +195,7 @@ void test_refs_revparse__not_tag(void)
 
 void test_refs_revparse__to_type(void)
 {
-	assert_invalid_spec("wrapped_tag^{trip}");
+	assert_invalid_single_spec("wrapped_tag^{trip}");
 	test_object("point_to_blob^{commit}", NULL);
 	cl_assert_equal_i(
 		GIT_EAMBIGUOUS, git_revparse_single(&g_obj, g_repo, "wrapped_tag^{blob}"));
@@ -169,15 +208,15 @@ void test_refs_revparse__to_type(void)
 
 void test_refs_revparse__linear_history(void)
 {
-	assert_invalid_spec("~");
+	assert_invalid_single_spec("~");
 	test_object("foo~bar", NULL);
 
-	assert_invalid_spec("master~bar");
-	assert_invalid_spec("master~-1");
-	assert_invalid_spec("master~0bar");
-	assert_invalid_spec("this doesn't make sense~2");
-	assert_invalid_spec("be3563a^{tree}~");
-	assert_invalid_spec("point_to_blob^{blob}~");
+	assert_invalid_single_spec("master~bar");
+	assert_invalid_single_spec("master~-1");
+	assert_invalid_single_spec("master~0bar");
+	assert_invalid_single_spec("this doesn't make sense~2");
+	assert_invalid_single_spec("be3563a^{tree}~");
+	assert_invalid_single_spec("point_to_blob^{blob}~");
 
 	test_object("master~0", "a65fedf39aefe402d3bb6e24df4d4f5fe4547750");
 	test_object("master~1", "be3563ae3f795b2b4353bcce3a527ad0a4f7f644");
@@ -188,10 +227,10 @@ void test_refs_revparse__linear_history(void)
 
 void test_refs_revparse__chaining(void)
 {
-	assert_invalid_spec("master@{0}@{0}");
-	assert_invalid_spec("@{u}@{-1}");
-	assert_invalid_spec("@{-1}@{-1}");
-	assert_invalid_spec("@{-3}@{0}");
+	assert_invalid_single_spec("master@{0}@{0}");
+	assert_invalid_single_spec("@{u}@{-1}");
+	assert_invalid_single_spec("@{-1}@{-1}");
+	assert_invalid_single_spec("@{-3}@{0}");
 
 	test_object("master@{0}~1^1", "9fd738e8f7967c078dceed8190330fc8648ee56a");
 	test_object("@{u}@{0}", "be3563ae3f795b2b4353bcce3a527ad0a4f7f644");
@@ -207,8 +246,8 @@ void test_refs_revparse__chaining(void)
 
 void test_refs_revparse__upstream(void)
 {
-	assert_invalid_spec("e90810b@{u}");
-	assert_invalid_spec("refs/tags/e90810b@{u}");
+	assert_invalid_single_spec("e90810b@{u}");
+	assert_invalid_single_spec("refs/tags/e90810b@{u}");
 	test_object("refs/heads/e90810b@{u}", NULL);
 
 	test_object("master@{upstream}", "be3563ae3f795b2b4353bcce3a527ad0a4f7f644");
@@ -220,7 +259,7 @@ void test_refs_revparse__upstream(void)
 
 void test_refs_revparse__ordinal(void)
 {
-	assert_invalid_spec("master@{-2}");
+	assert_invalid_single_spec("master@{-2}");
 	
 	/* TODO: make the test below actually fail
 	 * cl_git_fail(git_revparse_single(&g_obj, g_repo, "master@{1a}"));
@@ -242,9 +281,9 @@ void test_refs_revparse__ordinal(void)
 
 void test_refs_revparse__previous_head(void)
 {
-	assert_invalid_spec("@{-xyz}");
-	assert_invalid_spec("@{-0}");
-	assert_invalid_spec("@{-1b}");
+	assert_invalid_single_spec("@{-xyz}");
+	assert_invalid_single_spec("@{-0}");
+	assert_invalid_single_spec("@{-1b}");
 
 	test_object("@{-42}", NULL);
 
@@ -304,7 +343,7 @@ void test_refs_revparse__revwalk(void)
 {
 	test_object("master^{/not found in any commit}", NULL);
 	test_object("master^{/merge}", NULL);
-	assert_invalid_spec("master^{/((}");
+	assert_invalid_single_spec("master^{/((}");
 
 	test_object("master^{/anoth}", "5b5b025afb0b4c913b4c338a42934a3863bf3644");
 	test_object("master^{/Merge}", "be3563ae3f795b2b4353bcce3a527ad0a4f7f644");
@@ -385,8 +424,8 @@ void test_refs_revparse__date(void)
 
 void test_refs_revparse__colon(void)
 {
-	assert_invalid_spec(":/");
-	assert_invalid_spec("point_to_blob:readme.txt");
+	assert_invalid_single_spec(":/");
+	assert_invalid_single_spec("point_to_blob:readme.txt");
 	cl_git_fail(git_revparse_single(&g_obj, g_repo, ":2:README")); /* Not implemented  */
 
 	test_object(":/not found in any commit", NULL);
@@ -627,15 +666,32 @@ void test_refs_revparse__try_to_retrieve_branch_before_abbrev_sha(void)
 
 void test_refs_revparse__range(void)
 {
+	assert_invalid_single_spec("be3563a^1..be3563a");
+
 	test_rangelike("be3563a^1..be3563a",
 	               "9fd738e8f7967c078dceed8190330fc8648ee56a",
 	               "be3563ae3f795b2b4353bcce3a527ad0a4f7f644",
-	               0);
+	               GIT_REVPARSE_RANGE);
 
 	test_rangelike("be3563a^1...be3563a",
 	               "9fd738e8f7967c078dceed8190330fc8648ee56a",
 	               "be3563ae3f795b2b4353bcce3a527ad0a4f7f644",
-	               1);
+	               GIT_REVPARSE_RANGE | GIT_REVPARSE_MERGE_BASE);
 
 	test_rangelike("be3563a^1.be3563a", NULL, NULL, 0);
 }
+
+void test_refs_revparse__parses_range_operator(void)
+{
+	test_id("HEAD", "a65fedf39aefe402d3bb6e24df4d4f5fe4547750", NULL, GIT_REVPARSE_SINGLE);
+	test_id("HEAD~3..HEAD",
+		"4a202b346bb0fb0db7eff3cffeb3c70babbd2045",
+		"a65fedf39aefe402d3bb6e24df4d4f5fe4547750",
+		GIT_REVPARSE_RANGE);
+
+	test_id("HEAD~3...HEAD",
+		"4a202b346bb0fb0db7eff3cffeb3c70babbd2045",
+		"a65fedf39aefe402d3bb6e24df4d4f5fe4547750",
+		GIT_REVPARSE_RANGE | GIT_REVPARSE_MERGE_BASE);
+}
+
diff --git a/tests-clar/stash/drop.c b/tests-clar/stash/drop.c
index d171390da..12f922630 100644
--- a/tests-clar/stash/drop.c
+++ b/tests-clar/stash/drop.c
@@ -146,8 +146,6 @@ void retrieve_top_stash_id(git_oid *out)
 	cl_git_pass(git_reference_name_to_id(out, repo, GIT_REFS_STASH_FILE));
 
 	cl_assert_equal_i(true, git_oid_cmp(out, git_object_id(top_stash)) == 0);
-
-	git_object_free(top_stash);
 }
 
 void test_stash_drop__dropping_the_top_stash_updates_the_stash_reference(void)
@@ -160,15 +158,11 @@ void test_stash_drop__dropping_the_top_stash_updates_the_stash_reference(void)
 	retrieve_top_stash_id(&oid);
 
 	cl_git_pass(git_revparse_single(&next_top_stash, repo, "stash@{1}"));
-	cl_assert_equal_i(
-		false, git_oid_cmp(&oid, git_object_id(next_top_stash)) == 0);
+	cl_assert_equal_i(false, git_oid_cmp(&oid, git_object_id(next_top_stash)) == 0);
 
 	cl_git_pass(git_stash_drop(repo, 0));
 
 	retrieve_top_stash_id(&oid);
 
-	cl_assert_equal_i(
-		true, git_oid_cmp(&oid, git_object_id(next_top_stash)) == 0);
-
-	git_object_free(next_top_stash);
+	cl_git_pass(git_oid_cmp(&oid, git_object_id(next_top_stash)));
 }
diff --git a/tests-clar/stash/save.c b/tests-clar/stash/save.c
index 588dfc3ea..eae116ac5 100644
--- a/tests-clar/stash/save.c
+++ b/tests-clar/stash/save.c
@@ -37,10 +37,10 @@ void test_stash_save__cleanup(void)
 
 static void assert_object_oid(const char* revision, const char* expected_oid, git_otype type)
 {
-	git_object *object;
 	int result;
+	git_object *obj;
 
-	result = git_revparse_single(&object, repo, revision);
+	result = git_revparse_single(&obj, repo, revision);
 
 	if (!expected_oid) {
 		cl_assert_equal_i(GIT_ENOTFOUND, result);
@@ -48,10 +48,9 @@ static void assert_object_oid(const char* revision, const char* expected_oid, gi
 	} else
 		cl_assert_equal_i(0, result);
 
-	cl_assert_equal_i(type, git_object_type(object));
-	cl_git_pass(git_oid_streq(git_object_id(object), expected_oid));
-
-	git_object_free(object);
+	cl_git_pass(git_oid_streq(git_object_id(obj), expected_oid));
+	cl_assert_equal_i(type, git_object_type(obj));
+	git_object_free(obj);
 }
 
 static void assert_blob_oid(const char* revision, const char* expected_oid)
@@ -147,7 +146,7 @@ static void assert_commit_message_contains(const char *revision, const char *fra
 {
 	git_commit *commit;
 
-	cl_git_pass(git_revparse_single(((git_object **)&commit), repo, revision));
+	cl_git_pass(git_revparse_single((git_object**)&commit, repo, revision));
 
 	cl_assert(strstr(git_commit_message(commit), fragment) != NULL);