Merge pull request libgit2#4273 from azdavis/fix-template-dir-empty-string

Fix template dir empty string

Author: pks-t

src/repository.c

@@ -1235,7 +1235,7 @@ static int reserved_names_add8dot3(git_repository *repo, const char *path)
 
 	name_len = strlen(name);
 
-	if ((name_len == def_len && memcmp(name, def, def_len) == 0) || 
+	if ((name_len == def_len && memcmp(name, def, def_len) == 0) ||
 		(name_len == def_dot_git_len && memcmp(name, def_dot_git, def_dot_git_len) == 0)) {
 		git__free(name);
 		return 0;
@@ -1784,7 +1784,13 @@ static int repo_init_structure(
 			default_template = true;
 		}
 
-		if (tdir) {
+		/*
+		 * If tdir was the empty string, treat it like tdir was a path to an
+		 * empty directory (so, don't do any copying). This is the behavior
+		 * that git(1) exhibits, although it doesn't seem to be officially
+		 * documented.
+		 */
+		if (tdir && git__strcmp(tdir, "") != 0) {
 			uint32_t cpflags = GIT_CPDIR_COPY_SYMLINKS |
 				GIT_CPDIR_SIMPLE_TO_MODE |
 				GIT_CPDIR_COPY_DOTFILES;
@@ -2762,7 +2768,7 @@ int git_repository__cleanup_files(
 			error = git_futils_rmdir_r(path, NULL,
 				GIT_RMDIR_REMOVE_FILES | GIT_RMDIR_REMOVE_BLOCKERS);
 		}
-			
+
 		git_buf_clear(&buf);
 	}
 

tests/repo/init.c

@@ -320,6 +320,17 @@ void test_repo_init__sets_logAllRefUpdates_according_to_type_of_repository(void)
 	assert_config_entry_on_init_bytype("core.logallrefupdates", true, false);
 }
 
+void test_repo_init__empty_template_path(void)
+{
+	git_repository_init_options opts = GIT_REPOSITORY_INIT_OPTIONS_INIT;
+	opts.template_path = "";
+
+	cl_git_pass(git_futils_mkdir("foo", 0755, 0));
+	cl_git_pass(git_repository_init_ext(&_repo, "foo", &opts));
+
+	cleanup_repository("foo");
+}
+
 void test_repo_init__extended_0(void)
 {
 	git_repository_init_options opts = GIT_REPOSITORY_INIT_OPTIONS_INIT;