treewide: remove use of C++ style comments

C++ style comment ("//") are not specified by the ISO C90 standard and
thus do not conform to it. While libgit2 aims to conform to C90, we did
not enforce it until now, which is why quite a lot of these
non-conforming comments have snuck into our codebase. Do a tree-wide
conversion of all C++ style comments to the supported C style comments
to allow us enforcing strict C90 compliance in a later commit.

7 files changed, 38 insertions, 36 deletions

diff --git a/tests/object/lookupbypath.c b/tests/object/lookupbypath.c
index 13cd6a128..15e79f6ec 100644
--- a/tests/object/lookupbypath.c
+++ b/tests/object/lookupbypath.c
@@ -42,7 +42,7 @@ void test_object_lookupbypath__errors(void)
 {
 	cl_assert_equal_i(GIT_EINVALIDSPEC,
 			git_object_lookup_bypath(&g_actualobject, (git_object*)g_root_tree,
-				"subdir/subdir_test2.txt", GIT_OBJ_TREE)); // It's not a tree
+				"subdir/subdir_test2.txt", GIT_OBJ_TREE)); /* It's not a tree */
 	cl_assert_equal_i(GIT_ENOTFOUND,
 			git_object_lookup_bypath(&g_actualobject, (git_object*)g_root_tree,
 				"file/doesnt/exist", GIT_OBJ_ANY));
diff --git a/tests/object/message.c b/tests/object/message.c
index 519ce5f31..bc005340b 100644
--- a/tests/object/message.c
+++ b/tests/object/message.c
@@ -14,8 +14,8 @@ static void assert_message_prettifying(char *expected_output, char *input, int s
 
 #define t40 "A quick brown fox jumps over the lazy do"
 #define s40 "                                        "
-#define sss s40 s40 s40 s40 s40 s40 s40 s40 s40 s40 // # 400
-#define ttt t40 t40 t40 t40 t40 t40 t40 t40 t40 t40 // # 400
+#define sss s40 s40 s40 s40 s40 s40 s40 s40 s40 s40 /* # 400 */
+#define ttt t40 t40 t40 t40 t40 t40 t40 t40 t40 t40 /* # 400 */
 
 /* Ported from git.git */
 /* see https://github.com/git/git/blob/master/t/t0030-stripspace.sh */
diff --git a/tests/object/raw/write.c b/tests/object/raw/write.c
index 273f08f2c..c7270e26a 100644
--- a/tests/object/raw/write.c
+++ b/tests/object/raw/write.c
@@ -16,7 +16,7 @@ void test_body(object_data *d, git_rawobj *o);
 
 
 
-// Helpers
+/* Helpers */
 static void remove_object_files(object_data *d)
 {
    cl_git_pass(p_unlink(d->file));
@@ -57,7 +57,7 @@ static void make_odb_dir(void)
 }
 
 
-// Standard test form
+/* Standard test form */
 void test_body(object_data *d, git_rawobj *o) 
 {
    git_odb *db;
diff --git a/tests/object/tag/list.c b/tests/object/tag/list.c
index 6d5a24347..b8d507fe7 100644
--- a/tests/object/tag/list.c
+++ b/tests/object/tag/list.c
@@ -13,7 +13,7 @@ struct pattern_match_t
 	const char* expected_results[MAX_USED_TAGS];
 };
 
-// Helpers
+/* Helpers */
 static void ensure_tag_pattern_match(git_repository *repo,
 									 const struct pattern_match_t* data)
 {
@@ -34,7 +34,7 @@ static void ensure_tag_pattern_match(git_repository *repo,
 		goto exit;
 	}
 
-	// we have to be prepared that tags come in any order.
+	/* we have to be prepared that tags come in any order. */
 	for (i = 0; i < tag_list.count; i++)
 	{
 		for (j = 0; j < data->expected_matches; j++)
@@ -54,7 +54,7 @@ exit:
 	cl_git_pass(error);
 }
 
-// Fixture setup and teardown
+/* Fixture setup and teardown */
 void test_object_tag_list__initialize(void)
 {
 	g_repo = cl_git_sandbox_init("testrepo");
@@ -67,7 +67,7 @@ void test_object_tag_list__cleanup(void)
 
 void test_object_tag_list__list_all(void)
 {
-	// list all tag names from the repository
+	/* list all tag names from the repository */
 	git_strarray tag_list;
 
 	cl_git_pass(git_tag_list(&tag_list, g_repo));
@@ -78,37 +78,39 @@ void test_object_tag_list__list_all(void)
 }
 
 static const struct pattern_match_t matches[] = {
-	// All tags, including a packed one and two namespaced ones.
+	/* All tags, including a packed one and two namespaced ones. */
 	{ "", 6, { "e90810b", "point_to_blob", "test", "packed-tag", "foo/bar", "foo/foo/bar" } },
 
-	// beginning with
+	/* beginning with */
 	{ "t*", 1, { "test" } },
 
-	// ending with
+	/* ending with */
 	{ "*b", 2, { "e90810b", "point_to_blob" } },
 
-	// exact match
+	/* exact match */
 	{ "e", 0 },
 	{ "e90810b", 1, { "e90810b" } },
 
-	// either or
+	/* either or */
 	{ "e90810[ab]", 1, { "e90810b" } },
 
-	// glob in the middle
+	/* glob in the middle */
 	{ "foo/*/bar", 1, { "foo/foo/bar" } },
 
-	// The matching of '*' is based on plain string matching analog to the regular expression ".*"
-	// => a '/' in the tag name has no special meaning.
-	// Compare to `git tag -l "*bar"`
+	/*
+	 * The matching of '*' is based on plain string matching analog to the regular expression ".*"
+	 * => a '/' in the tag name has no special meaning.
+	 * Compare to `git tag -l "*bar"`
+	 */
 	{ "*bar", 2, { "foo/bar", "foo/foo/bar" } },
 
-	// End of list
+	/* End of list */
 	{ NULL }
 };
 
 void test_object_tag_list__list_by_pattern(void)
 {
-	// list all tag names from the repository matching a specified pattern
+	/* list all tag names from the repository matching a specified pattern */
 	size_t i = 0;
 	while (matches[i].pattern)
 		ensure_tag_pattern_match(g_repo, &matches[i++]);
diff --git a/tests/object/tag/read.c b/tests/object/tag/read.c
index 8f28afd54..e28056ec7 100644
--- a/tests/object/tag/read.c
+++ b/tests/object/tag/read.c
@@ -13,7 +13,7 @@ static const char *taggerless = "4a23e2e65ad4e31c4c9db7dc746650bfad082679";
 
 static git_repository *g_repo;
 
-// Fixture setup and teardown
+/* Fixture setup and teardown */
 void test_object_tag_read__initialize(void)
 {
 	g_repo = cl_git_sandbox_init("testrepo");
@@ -27,7 +27,7 @@ void test_object_tag_read__cleanup(void)
 
 void test_object_tag_read__parse(void)
 {
-	// read and parse a tag from the repository
+	/* read and parse a tag from the repository */
 	git_tag *tag1, *tag2;
 	git_commit *commit;
 	git_oid id1, id2, id_commit;
@@ -58,13 +58,13 @@ void test_object_tag_read__parse(void)
 
 void test_object_tag_read__parse_without_tagger(void)
 {
-	// read and parse a tag without a tagger field
+	/* read and parse a tag without a tagger field */
 	git_repository *bad_tag_repo;
 	git_tag *bad_tag;
 	git_commit *commit;
 	git_oid id, id_commit;
 
-	// TODO: This is a little messy
+	/* TODO: This is a little messy */
 	cl_git_pass(git_repository_open(&bad_tag_repo, cl_fixture("bad_tag.git")));
 
 	git_oid_fromstr(&id, bad_tag_id);
@@ -90,13 +90,13 @@ void test_object_tag_read__parse_without_tagger(void)
 
 void test_object_tag_read__parse_without_message(void)
 {
-	// read and parse a tag without a message field
+	/* read and parse a tag without a message field */
 	git_repository *short_tag_repo;
 	git_tag *short_tag;
 	git_commit *commit;
 	git_oid id, id_commit;
 
-	// TODO: This is a little messy
+	/* TODO: This is a little messy */
 	cl_git_pass(git_repository_open(&short_tag_repo, cl_fixture("short_tag.git")));
 
 	git_oid_fromstr(&id, short_tag_id);
diff --git a/tests/object/tag/write.c b/tests/object/tag/write.c
index 68e4b6c61..4c5080185 100644
--- a/tests/object/tag/write.c
+++ b/tests/object/tag/write.c
@@ -9,7 +9,7 @@ static const char *tagged_commit = "e90810b8df3e80c413d903f631643c716887138d";
 
 static git_repository *g_repo;
 
-// Fixture setup and teardown
+/* Fixture setup and teardown */
 void test_object_tag_write__initialize(void)
 {
    g_repo = cl_git_sandbox_init("testrepo");
@@ -22,7 +22,7 @@ void test_object_tag_write__cleanup(void)
 
 void test_object_tag_write__basic(void)
 {
-   // write a tag to the repository and read it again
+	/* write a tag to the repository and read it again */
 	git_tag *tag;
 	git_oid target_id, tag_id;
 	git_signature *tagger;
@@ -67,7 +67,7 @@ void test_object_tag_write__basic(void)
 
 void test_object_tag_write__overwrite(void)
 {
-   // Attempt to write a tag bearing the same name than an already existing tag
+	/* Attempt to write a tag bearing the same name than an already existing tag */
 	git_oid target_id, tag_id;
 	git_signature *tagger;
 	git_object *target;
@@ -93,7 +93,7 @@ void test_object_tag_write__overwrite(void)
 
 void test_object_tag_write__replace(void)
 {
-   // Replace an already existing tag
+	/* Replace an already existing tag */
 	git_oid target_id, tag_id, old_tag_id;
 	git_signature *tagger;
 	git_reference *ref_tag;
@@ -130,7 +130,7 @@ void test_object_tag_write__replace(void)
 
 void test_object_tag_write__lightweight(void)
 {
-   // write a lightweight tag to the repository and read it again
+	/* write a lightweight tag to the repository and read it again */
 	git_oid target_id, object_id;
 	git_reference *ref_tag;
 	git_object *target;
@@ -159,7 +159,7 @@ void test_object_tag_write__lightweight(void)
 
 void test_object_tag_write__lightweight_over_existing(void)
 {
-   // Attempt to write a lightweight tag bearing the same name than an already existing tag
+	/* Attempt to write a lightweight tag bearing the same name than an already existing tag */
 	git_oid target_id, object_id, existing_object_id;
 	git_object *target;
 
@@ -181,7 +181,7 @@ void test_object_tag_write__lightweight_over_existing(void)
 
 void test_object_tag_write__delete(void)
 {
-   // Delete an already existing tag
+	/* Delete an already existing tag */
 	git_reference *ref_tag;
 
 	cl_git_pass(git_tag_delete(g_repo, "e90810b"));
diff --git a/tests/object/tree/read.c b/tests/object/tree/read.c
index 59a809bf1..1d3a9133d 100644
--- a/tests/object/tree/read.c
+++ b/tests/object/tree/read.c
@@ -6,7 +6,7 @@ static const char *tree_oid = "1810dff58d8a660512d4832e740f692884338ccd";
 
 static git_repository *g_repo;
 
-// Fixture setup and teardown
+/* Fixture setup and teardown */
 void test_object_tree_read__initialize(void)
 {
    g_repo = cl_git_sandbox_init("testrepo");
@@ -21,7 +21,7 @@ void test_object_tree_read__cleanup(void)
 
 void test_object_tree_read__loaded(void)
 {
-   // acces randomly the entries on a loaded tree
+	/* acces randomly the entries on a loaded tree */
 	git_oid id;
 	git_tree *tree;
 
@@ -42,7 +42,7 @@ void test_object_tree_read__loaded(void)
 
 void test_object_tree_read__two(void)
 {
-   // read a tree from the repository
+	/* read a tree from the repository */
 	git_oid id;
 	git_tree *tree;
 	const git_tree_entry *entry;