cmark

diff --git a/api_test/cplusplus.h b/api_test/cplusplus.h
@@ -7,8 +7,7 @@
 extern "C" {
 #endif
 
-void
-test_cplusplus(test_batch_runner *runner);
+void test_cplusplus(test_batch_runner *runner);
 
 #ifdef __cplusplus
 }

diff --git a/api_test/harness.c b/api_test/harness.c
@@ -5,98 +5,79 @@
 
 #include "harness.h"
 
-test_batch_runner*
-test_batch_runner_new()
-{
-	return (test_batch_runner *)calloc(1, sizeof(test_batch_runner));
+test_batch_runner *test_batch_runner_new() {
+  return (test_batch_runner *)calloc(1, sizeof(test_batch_runner));
 }
 
-static void
-test_result(test_batch_runner *runner, int cond, const char *msg, va_list ap)
-{
-	++runner->test_num;
-
-	if (cond) {
-		++runner->num_passed;
-	}
-	else {
-		fprintf(stderr, "FAILED test %d: ", runner->test_num);
-		vfprintf(stderr, msg, ap);
-		fprintf(stderr, "\n");
-		++runner->num_failed;
-	}
+static void test_result(test_batch_runner *runner, int cond, const char *msg,
+                        va_list ap) {
+  ++runner->test_num;
+
+  if (cond) {
+    ++runner->num_passed;
+  } else {
+    fprintf(stderr, "FAILED test %d: ", runner->test_num);
+    vfprintf(stderr, msg, ap);
+    fprintf(stderr, "\n");
+    ++runner->num_failed;
+  }
 }
 
-void
-SKIP(test_batch_runner *runner, int num_tests)
-{
-	runner->test_num    += num_tests;
-	runner->num_skipped += num_tests;
+void SKIP(test_batch_runner *runner, int num_tests) {
+  runner->test_num += num_tests;
+  runner->num_skipped += num_tests;
 }
 
-void
-OK(test_batch_runner *runner, int cond, const char *msg, ...)
-{
-	va_list ap;
-	va_start(ap, msg);
-	test_result(runner, cond, msg, ap);
-	va_end(ap);
+void OK(test_batch_runner *runner, int cond, const char *msg, ...) {
+  va_list ap;
+  va_start(ap, msg);
+  test_result(runner, cond, msg, ap);
+  va_end(ap);
 }
 
-void
-INT_EQ(test_batch_runner *runner, int got, int expected, const char *msg, ...)
-{
-	int cond = got == expected;
+void INT_EQ(test_batch_runner *runner, int got, int expected, const char *msg,
+            ...) {
+  int cond = got == expected;
 
-	va_list ap;
-	va_start(ap, msg);
-	test_result(runner, cond, msg, ap);
-	va_end(ap);
+  va_list ap;
+  va_start(ap, msg);
+  test_result(runner, cond, msg, ap);
+  va_end(ap);
 
-	if (!cond) {
-		fprintf(stderr, "  Got:      %d\n", got);
-		fprintf(stderr, "  Expected: %d\n", expected);
-	}
+  if (!cond) {
+    fprintf(stderr, "  Got:      %d\n", got);
+    fprintf(stderr, "  Expected: %d\n", expected);
+  }
 }
 
-void
-STR_EQ(test_batch_runner *runner, const char *got, const char *expected,
-       const char *msg, ...)
-{
-	int cond = strcmp(got, expected) == 0;
-
-	va_list ap;
-	va_start(ap, msg);
-	test_result(runner, cond, msg, ap);
-	va_end(ap);
-
-	if (!cond) {
-		fprintf(stderr, "  Got:      \"%s\"\n", got);
-		fprintf(stderr, "  Expected: \"%s\"\n", expected);
-	}
-}
+void STR_EQ(test_batch_runner *runner, const char *got, const char *expected,
+            const char *msg, ...) {
+  int cond = strcmp(got, expected) == 0;
 
-int
-test_ok(test_batch_runner *runner)
-{
-	return runner->num_failed == 0;
-}
+  va_list ap;
+  va_start(ap, msg);
+  test_result(runner, cond, msg, ap);
+  va_end(ap);
 
-void
-test_print_summary(test_batch_runner *runner)
-{
-	int num_passed  = runner->num_passed;
-	int num_skipped = runner->num_skipped;
-	int num_failed  = runner->num_failed;
-
-	fprintf(stderr, "%d tests passed, %d failed, %d skipped\n",
-		num_passed, num_failed, num_skipped);
-
-	if (test_ok(runner)) {
-		fprintf(stderr, "PASS\n");
-	}
-	else {
-		fprintf(stderr, "FAIL\n");
-	}
+  if (!cond) {
+    fprintf(stderr, "  Got:      \"%s\"\n", got);
+    fprintf(stderr, "  Expected: \"%s\"\n", expected);
+  }
 }
 
+int test_ok(test_batch_runner *runner) { return runner->num_failed == 0; }
+
+void test_print_summary(test_batch_runner *runner) {
+  int num_passed = runner->num_passed;
+  int num_skipped = runner->num_skipped;
+  int num_failed = runner->num_failed;
+
+  fprintf(stderr, "%d tests passed, %d failed, %d skipped\n", num_passed,
+          num_failed, num_skipped);
+
+  if (test_ok(runner)) {
+    fprintf(stderr, "PASS\n");
+  } else {
+    fprintf(stderr, "FAIL\n");
+  }
+}

diff --git a/api_test/harness.h b/api_test/harness.h
@@ -6,37 +6,30 @@ extern "C" {
 #endif
 
 typedef struct {
-	int test_num;
-	int num_passed;
-	int num_failed;
-	int num_skipped;
+  int test_num;
+  int num_passed;
+  int num_failed;
+  int num_skipped;
 } test_batch_runner;
 
-test_batch_runner*
-test_batch_runner_new();
+test_batch_runner *test_batch_runner_new();
 
-void
-SKIP(test_batch_runner *runner, int num_tests);
+void SKIP(test_batch_runner *runner, int num_tests);
 
-void
-OK(test_batch_runner *runner, int cond, const char *msg, ...);
+void OK(test_batch_runner *runner, int cond, const char *msg, ...);
 
-void
-INT_EQ(test_batch_runner *runner, int got, int expected, const char *msg, ...);
+void INT_EQ(test_batch_runner *runner, int got, int expected, const char *msg,
+            ...);
 
-void
-STR_EQ(test_batch_runner *runner, const char *got, const char *expected,
-       const char *msg, ...);
+void STR_EQ(test_batch_runner *runner, const char *got, const char *expected,
+            const char *msg, ...);
 
-int
-test_ok(test_batch_runner *runner);
+int test_ok(test_batch_runner *runner);
 
-void
-test_print_summary(test_batch_runner *runner);
+void test_print_summary(test_batch_runner *runner);
 
 #ifdef __cplusplus
 }
 #endif
 
 #endif
-

diff --git a/api_test/main.c b/api_test/main.c
@@ -12,813 +12,693 @@
 #define UTF8_REPL "\xEF\xBF\xBD"
 
 static const cmark_node_type node_types[] = {
-	CMARK_NODE_DOCUMENT,
-	CMARK_NODE_BLOCK_QUOTE,
-	CMARK_NODE_LIST,
-	CMARK_NODE_ITEM,
-	CMARK_NODE_CODE_BLOCK,
-	CMARK_NODE_HTML_BLOCK,
-	CMARK_NODE_PARAGRAPH,
-	CMARK_NODE_HEADING,
-	CMARK_NODE_THEMATIC_BREAK,
-	CMARK_NODE_TEXT,
-	CMARK_NODE_SOFTBREAK,
-	CMARK_NODE_LINEBREAK,
-	CMARK_NODE_CODE,
-	CMARK_NODE_HTML_INLINE,
-	CMARK_NODE_EMPH,
-	CMARK_NODE_STRONG,
-	CMARK_NODE_LINK,
-	CMARK_NODE_IMAGE
-};
+    CMARK_NODE_DOCUMENT,  CMARK_NODE_BLOCK_QUOTE, CMARK_NODE_LIST,
+    CMARK_NODE_ITEM,      CMARK_NODE_CODE_BLOCK,  CMARK_NODE_HTML_BLOCK,
+    CMARK_NODE_PARAGRAPH, CMARK_NODE_HEADING,     CMARK_NODE_THEMATIC_BREAK,
+    CMARK_NODE_TEXT,      CMARK_NODE_SOFTBREAK,   CMARK_NODE_LINEBREAK,
+    CMARK_NODE_CODE,      CMARK_NODE_HTML_INLINE, CMARK_NODE_EMPH,
+    CMARK_NODE_STRONG,    CMARK_NODE_LINK,        CMARK_NODE_IMAGE};
 static const int num_node_types = sizeof(node_types) / sizeof(*node_types);
 
-static void
-test_md_to_html(test_batch_runner *runner, const char *markdown,
-		const char *expected_html, const char *msg);
+static void test_md_to_html(test_batch_runner *runner, const char *markdown,
+                            const char *expected_html, const char *msg);
 
-static void
-test_content(test_batch_runner *runner, cmark_node_type type,
-	     int allowed_content);
+static void test_content(test_batch_runner *runner, cmark_node_type type,
+                         int allowed_content);
 
-static void
-test_char(test_batch_runner *runner, int valid, const char *utf8,
-	  const char *msg);
+static void test_char(test_batch_runner *runner, int valid, const char *utf8,
+                      const char *msg);
 
-static void
-test_incomplete_char(test_batch_runner *runner, const char *utf8,
-		     const char *msg);
+static void test_incomplete_char(test_batch_runner *runner, const char *utf8,
+                                 const char *msg);
 
-static void
-test_continuation_byte(test_batch_runner *runner, const char *utf8);
+static void test_continuation_byte(test_batch_runner *runner, const char *utf8);
 
-static void
-version(test_batch_runner *runner)
-{
-	INT_EQ(runner, cmark_version(), CMARK_VERSION, "cmark_version");
-	STR_EQ(runner, cmark_version_string(), CMARK_VERSION_STRING,
-	       "cmark_version_string");
+static void version(test_batch_runner *runner) {
+  INT_EQ(runner, cmark_version(), CMARK_VERSION, "cmark_version");
+  STR_EQ(runner, cmark_version_string(), CMARK_VERSION_STRING,
+         "cmark_version_string");
 }
 
-static void
-constructor(test_batch_runner *runner)
-{
-	for (int i = 0; i < num_node_types; ++i) {
-		cmark_node_type type = node_types[i];
-		cmark_node *node = cmark_node_new(type);
-		OK(runner, node != NULL, "new type %d", type);
-		INT_EQ(runner, cmark_node_get_type(node), type,
-		       "get_type %d", type);
-
-		switch (node->type) {
-		case CMARK_NODE_HEADING:
-			INT_EQ(runner, cmark_node_get_heading_level(node), 1,
-			       "default heading level is 1");
-			node->as.heading.level = 1;
-			break;
-
-		case CMARK_NODE_LIST:
-			INT_EQ(runner, cmark_node_get_list_type(node),
-			       CMARK_BULLET_LIST,
-			       "default is list type is bullet");
-			INT_EQ(runner, cmark_node_get_list_delim(node),
-			       CMARK_NO_DELIM,
-			       "default is list delim is NO_DELIM");
-			INT_EQ(runner, cmark_node_get_list_start(node), 1,
-			       "default is list start is 1");
-			INT_EQ(runner, cmark_node_get_list_tight(node), 0,
-			       "default is list is loose");
-			break;
-
-		default:
-			break;
-		}
-
-		cmark_node_free(node);
-	}
+static void constructor(test_batch_runner *runner) {
+  for (int i = 0; i < num_node_types; ++i) {
+    cmark_node_type type = node_types[i];
+    cmark_node *node = cmark_node_new(type);
+    OK(runner, node != NULL, "new type %d", type);
+    INT_EQ(runner, cmark_node_get_type(node), type, "get_type %d", type);
+
+    switch (node->type) {
+    case CMARK_NODE_HEADING:
+      INT_EQ(runner, cmark_node_get_heading_level(node), 1,
+             "default heading level is 1");
+      node->as.heading.level = 1;
+      break;
+
+    case CMARK_NODE_LIST:
+      INT_EQ(runner, cmark_node_get_list_type(node), CMARK_BULLET_LIST,
+             "default is list type is bullet");
+      INT_EQ(runner, cmark_node_get_list_delim(node), CMARK_NO_DELIM,
+             "default is list delim is NO_DELIM");
+      INT_EQ(runner, cmark_node_get_list_start(node), 1,
+             "default is list start is 1");
+      INT_EQ(runner, cmark_node_get_list_tight(node), 0,
+             "default is list is loose");
+      break;
+
+    default:
+      break;
+    }
+
+    cmark_node_free(node);
+  }
 }
 
-static void
-accessors(test_batch_runner *runner)
-{
-	static const char markdown[] =
-		"## Header\n"
-		"\n"
-		"* Item 1\n"
-		"* Item 2\n"
-		"\n"
-		"2. Item 1\n"
-		"\n"
-		"3. Item 2\n"
-		"\n"
-		"\n"
-		"    code\n"
-		"\n"
-		"``` lang\n"
-		"fenced\n"
-		"```\n"
-		"\n"
-		"<div>html</div>\n"
-		"\n"
-		"[link](url 'title')\n";
-
-	cmark_node *doc = cmark_parse_document(markdown, sizeof(markdown) - 1, CMARK_OPT_DEFAULT);
-
-	// Getters
-
-	cmark_node *heading = cmark_node_first_child(doc);
-	INT_EQ(runner, cmark_node_get_heading_level(heading), 2,
-	       "get_heading_level");
-
-	cmark_node *bullet_list = cmark_node_next(heading);
-	INT_EQ(runner, cmark_node_get_list_type(bullet_list),
-	       CMARK_BULLET_LIST, "get_list_type bullet");
-	INT_EQ(runner, cmark_node_get_list_tight(bullet_list), 1,
-	       "get_list_tight tight");
-
-	cmark_node *ordered_list = cmark_node_next(bullet_list);
-	INT_EQ(runner, cmark_node_get_list_type(ordered_list),
-	       CMARK_ORDERED_LIST, "get_list_type ordered");
-	INT_EQ(runner, cmark_node_get_list_delim(ordered_list),
-	       CMARK_PERIOD_DELIM, "get_list_delim ordered");
-	INT_EQ(runner, cmark_node_get_list_start(ordered_list), 2,
-	       "get_list_start");
-	INT_EQ(runner, cmark_node_get_list_tight(ordered_list), 0,
-	       "get_list_tight loose");
-
-	cmark_node *code = cmark_node_next(ordered_list);
-	STR_EQ(runner, cmark_node_get_literal(code), "code\n",
-	       "get_literal indented code");
-
-	cmark_node *fenced = cmark_node_next(code);
-	STR_EQ(runner, cmark_node_get_literal(fenced), "fenced\n",
-	       "get_literal fenced code");
-	STR_EQ(runner, cmark_node_get_fence_info(fenced), "lang",
-	       "get_fence_info");
-
-	cmark_node *html = cmark_node_next(fenced);
-	STR_EQ(runner, cmark_node_get_literal(html),
-	       "<div>html</div>\n", "get_literal html");
-
-	cmark_node *paragraph = cmark_node_next(html);
-	INT_EQ(runner, cmark_node_get_start_line(paragraph), 19,
-	       "get_start_line");
-	INT_EQ(runner, cmark_node_get_start_column(paragraph), 1,
-	       "get_start_column");
-	INT_EQ(runner, cmark_node_get_end_line(paragraph), 19,
-	       "get_end_line");
-
-	cmark_node *link = cmark_node_first_child(paragraph);
-	STR_EQ(runner, cmark_node_get_url(link), "url",
-	       "get_url");
-	STR_EQ(runner, cmark_node_get_title(link), "title",
-	       "get_title");
-
-	cmark_node *string = cmark_node_first_child(link);
-	STR_EQ(runner, cmark_node_get_literal(string), "link",
-	       "get_literal string");
-
-	// Setters
-
-	OK(runner, cmark_node_set_heading_level(heading, 3),
-	   "set_heading_level");
-
-	OK(runner, cmark_node_set_list_type(bullet_list, CMARK_ORDERED_LIST),
-	   "set_list_type ordered");
-	OK(runner, cmark_node_set_list_delim(bullet_list, CMARK_PAREN_DELIM),
-	   "set_list_delim paren");
-	OK(runner, cmark_node_set_list_start(bullet_list, 3),
-	   "set_list_start");
-	OK(runner, cmark_node_set_list_tight(bullet_list, 0),
-	   "set_list_tight loose");
-
-	OK(runner, cmark_node_set_list_type(ordered_list, CMARK_BULLET_LIST),
-	   "set_list_type bullet");
-	OK(runner, cmark_node_set_list_tight(ordered_list, 1),
-	   "set_list_tight tight");
-
-	OK(runner, cmark_node_set_literal(code, "CODE\n"),
-	   "set_literal indented code");
-
-	OK(runner, cmark_node_set_literal(fenced, "FENCED\n"),
-	   "set_literal fenced code");
-	OK(runner, cmark_node_set_fence_info(fenced, "LANG"),
-	   "set_fence_info");
-
-	OK(runner, cmark_node_set_literal(html, "<div>HTML</div>\n"),
-	   "set_literal html");
-
-	OK(runner, cmark_node_set_url(link, "URL"),
-	   "set_url");
-	OK(runner, cmark_node_set_title(link, "TITLE"),
-	   "set_title");
-
-	OK(runner, cmark_node_set_literal(string, "LINK"),
-	   "set_literal string");
-
-	char *rendered_html = cmark_render_html(doc, CMARK_OPT_DEFAULT);
-	static const char expected_html[] =
-		"<h3>Header</h3>\n"
-		"<ol start=\"3\">\n"
-		"<li>\n"
-		"<p>Item 1</p>\n"
-		"</li>\n"
-		"<li>\n"
-		"<p>Item 2</p>\n"
-		"</li>\n"
-		"</ol>\n"
-		"<ul>\n"
-		"<li>Item 1</li>\n"
-		"<li>Item 2</li>\n"
-		"</ul>\n"
-		"<pre><code>CODE\n"
-		"</code></pre>\n"
-		"<pre><code class=\"language-LANG\">FENCED\n"
-		"</code></pre>\n"
-		"<div>HTML</div>\n"
-		"<p><a href=\"URL\" title=\"TITLE\">LINK</a></p>\n";
-	STR_EQ(runner, rendered_html, expected_html, "setters work");
-	free(rendered_html);
-
-	// Getter errors
-
-	INT_EQ(runner, cmark_node_get_heading_level(bullet_list), 0,
-	       "get_heading_level error");
-	INT_EQ(runner, cmark_node_get_list_type(heading), CMARK_NO_LIST,
-	       "get_list_type error");
-	INT_EQ(runner, cmark_node_get_list_start(code), 0,
-	       "get_list_start error");
-	INT_EQ(runner, cmark_node_get_list_tight(fenced), 0,
-	       "get_list_tight error");
-	OK(runner, cmark_node_get_literal(ordered_list) == NULL,
-	   "get_literal error");
-	OK(runner, cmark_node_get_fence_info(paragraph) == NULL,
-	   "get_fence_info error");
-	OK(runner, cmark_node_get_url(html) == NULL,
-	   "get_url error");
-	OK(runner, cmark_node_get_title(heading) == NULL,
-	   "get_title error");
-
-	// Setter errors
-
-	OK(runner, !cmark_node_set_heading_level(bullet_list, 3),
-	   "set_heading_level error");
-	OK(runner, !cmark_node_set_list_type(heading, CMARK_ORDERED_LIST),
-	   "set_list_type error");
-	OK(runner, !cmark_node_set_list_start(code, 3),
-	   "set_list_start error");
-	OK(runner, !cmark_node_set_list_tight(fenced, 0),
-	   "set_list_tight error");
-	OK(runner, !cmark_node_set_literal(ordered_list, "content\n"),
-	   "set_literal error");
-	OK(runner, !cmark_node_set_fence_info(paragraph, "lang"),
-	   "set_fence_info error");
-	OK(runner, !cmark_node_set_url(html, "url"),
-	   "set_url error");
-	OK(runner, !cmark_node_set_title(heading, "title"),
-	   "set_title error");
-
-	OK(runner, !cmark_node_set_heading_level(heading, 0),
-	   "set_heading_level too small");
-	OK(runner, !cmark_node_set_heading_level(heading, 7),
-	   "set_heading_level too large");
-	OK(runner, !cmark_node_set_list_type(bullet_list, CMARK_NO_LIST),
-	   "set_list_type invalid");
-	OK(runner, !cmark_node_set_list_start(bullet_list, -1),
-	   "set_list_start negative");
-
-	cmark_node_free(doc);
+static void accessors(test_batch_runner *runner) {
+  static const char markdown[] = "## Header\n"
+                                 "\n"
+                                 "* Item 1\n"
+                                 "* Item 2\n"
+                                 "\n"
+                                 "2. Item 1\n"
+                                 "\n"
+                                 "3. Item 2\n"
+                                 "\n"
+                                 "\n"
+                                 "    code\n"
+                                 "\n"
+                                 "``` lang\n"
+                                 "fenced\n"
+                                 "```\n"
+                                 "\n"
+                                 "<div>html</div>\n"
+                                 "\n"
+                                 "[link](url 'title')\n";
+
+  cmark_node *doc =
+      cmark_parse_document(markdown, sizeof(markdown) - 1, CMARK_OPT_DEFAULT);
+
+  // Getters
+
+  cmark_node *heading = cmark_node_first_child(doc);
+  INT_EQ(runner, cmark_node_get_heading_level(heading), 2, "get_heading_level");
+
+  cmark_node *bullet_list = cmark_node_next(heading);
+  INT_EQ(runner, cmark_node_get_list_type(bullet_list), CMARK_BULLET_LIST,
+         "get_list_type bullet");
+  INT_EQ(runner, cmark_node_get_list_tight(bullet_list), 1,
+         "get_list_tight tight");
+
+  cmark_node *ordered_list = cmark_node_next(bullet_list);
+  INT_EQ(runner, cmark_node_get_list_type(ordered_list), CMARK_ORDERED_LIST,
+         "get_list_type ordered");
+  INT_EQ(runner, cmark_node_get_list_delim(ordered_list), CMARK_PERIOD_DELIM,
+         "get_list_delim ordered");
+  INT_EQ(runner, cmark_node_get_list_start(ordered_list), 2, "get_list_start");
+  INT_EQ(runner, cmark_node_get_list_tight(ordered_list), 0,
+         "get_list_tight loose");
+
+  cmark_node *code = cmark_node_next(ordered_list);
+  STR_EQ(runner, cmark_node_get_literal(code), "code\n",
+         "get_literal indented code");
+
+  cmark_node *fenced = cmark_node_next(code);
+  STR_EQ(runner, cmark_node_get_literal(fenced), "fenced\n",
+         "get_literal fenced code");
+  STR_EQ(runner, cmark_node_get_fence_info(fenced), "lang", "get_fence_info");
+
+  cmark_node *html = cmark_node_next(fenced);
+  STR_EQ(runner, cmark_node_get_literal(html), "<div>html</div>\n",
+         "get_literal html");
+
+  cmark_node *paragraph = cmark_node_next(html);
+  INT_EQ(runner, cmark_node_get_start_line(paragraph), 19, "get_start_line");
+  INT_EQ(runner, cmark_node_get_start_column(paragraph), 1, "get_start_column");
+  INT_EQ(runner, cmark_node_get_end_line(paragraph), 19, "get_end_line");
+
+  cmark_node *link = cmark_node_first_child(paragraph);
+  STR_EQ(runner, cmark_node_get_url(link), "url", "get_url");
+  STR_EQ(runner, cmark_node_get_title(link), "title", "get_title");
+
+  cmark_node *string = cmark_node_first_child(link);
+  STR_EQ(runner, cmark_node_get_literal(string), "link", "get_literal string");
+
+  // Setters
+
+  OK(runner, cmark_node_set_heading_level(heading, 3), "set_heading_level");
+
+  OK(runner, cmark_node_set_list_type(bullet_list, CMARK_ORDERED_LIST),
+     "set_list_type ordered");
+  OK(runner, cmark_node_set_list_delim(bullet_list, CMARK_PAREN_DELIM),
+     "set_list_delim paren");
+  OK(runner, cmark_node_set_list_start(bullet_list, 3), "set_list_start");
+  OK(runner, cmark_node_set_list_tight(bullet_list, 0), "set_list_tight loose");
+
+  OK(runner, cmark_node_set_list_type(ordered_list, CMARK_BULLET_LIST),
+     "set_list_type bullet");
+  OK(runner, cmark_node_set_list_tight(ordered_list, 1),
+     "set_list_tight tight");
+
+  OK(runner, cmark_node_set_literal(code, "CODE\n"),
+     "set_literal indented code");
+
+  OK(runner, cmark_node_set_literal(fenced, "FENCED\n"),
+     "set_literal fenced code");
+  OK(runner, cmark_node_set_fence_info(fenced, "LANG"), "set_fence_info");
+
+  OK(runner, cmark_node_set_literal(html, "<div>HTML</div>\n"),
+     "set_literal html");
+
+  OK(runner, cmark_node_set_url(link, "URL"), "set_url");
+  OK(runner, cmark_node_set_title(link, "TITLE"), "set_title");
+
+  OK(runner, cmark_node_set_literal(string, "LINK"), "set_literal string");
+
+  char *rendered_html = cmark_render_html(doc, CMARK_OPT_DEFAULT);
+  static const char expected_html[] =
+      "<h3>Header</h3>\n"
+      "<ol start=\"3\">\n"
+      "<li>\n"
+      "<p>Item 1</p>\n"
+      "</li>\n"
+      "<li>\n"
+      "<p>Item 2</p>\n"
+      "</li>\n"
+      "</ol>\n"
+      "<ul>\n"
+      "<li>Item 1</li>\n"
+      "<li>Item 2</li>\n"
+      "</ul>\n"
+      "<pre><code>CODE\n"
+      "</code></pre>\n"
+      "<pre><code class=\"language-LANG\">FENCED\n"
+      "</code></pre>\n"
+      "<div>HTML</div>\n"
+      "<p><a href=\"URL\" title=\"TITLE\">LINK</a></p>\n";
+  STR_EQ(runner, rendered_html, expected_html, "setters work");
+  free(rendered_html);
+
+  // Getter errors
+
+  INT_EQ(runner, cmark_node_get_heading_level(bullet_list), 0,
+         "get_heading_level error");
+  INT_EQ(runner, cmark_node_get_list_type(heading), CMARK_NO_LIST,
+         "get_list_type error");
+  INT_EQ(runner, cmark_node_get_list_start(code), 0, "get_list_start error");
+  INT_EQ(runner, cmark_node_get_list_tight(fenced), 0, "get_list_tight error");
+  OK(runner, cmark_node_get_literal(ordered_list) == NULL, "get_literal error");
+  OK(runner, cmark_node_get_fence_info(paragraph) == NULL,
+     "get_fence_info error");
+  OK(runner, cmark_node_get_url(html) == NULL, "get_url error");
+  OK(runner, cmark_node_get_title(heading) == NULL, "get_title error");
+
+  // Setter errors
+
+  OK(runner, !cmark_node_set_heading_level(bullet_list, 3),
+     "set_heading_level error");
+  OK(runner, !cmark_node_set_list_type(heading, CMARK_ORDERED_LIST),
+     "set_list_type error");
+  OK(runner, !cmark_node_set_list_start(code, 3), "set_list_start error");
+  OK(runner, !cmark_node_set_list_tight(fenced, 0), "set_list_tight error");
+  OK(runner, !cmark_node_set_literal(ordered_list, "content\n"),
+     "set_literal error");
+  OK(runner, !cmark_node_set_fence_info(paragraph, "lang"),
+     "set_fence_info error");
+  OK(runner, !cmark_node_set_url(html, "url"), "set_url error");
+  OK(runner, !cmark_node_set_title(heading, "title"), "set_title error");
+
+  OK(runner, !cmark_node_set_heading_level(heading, 0),
+     "set_heading_level too small");
+  OK(runner, !cmark_node_set_heading_level(heading, 7),
+     "set_heading_level too large");
+  OK(runner, !cmark_node_set_list_type(bullet_list, CMARK_NO_LIST),
+     "set_list_type invalid");
+  OK(runner, !cmark_node_set_list_start(bullet_list, -1),
+     "set_list_start negative");
+
+  cmark_node_free(doc);
 }
 
-static void
-node_check(test_batch_runner *runner) {
-	// Construct an incomplete tree.
-	cmark_node *doc = cmark_node_new(CMARK_NODE_DOCUMENT);
-	cmark_node *p1  = cmark_node_new(CMARK_NODE_PARAGRAPH);
-	cmark_node *p2  = cmark_node_new(CMARK_NODE_PARAGRAPH);
-	doc->first_child = p1;
-	p1->next = p2;
+static void node_check(test_batch_runner *runner) {
+  // Construct an incomplete tree.
+  cmark_node *doc = cmark_node_new(CMARK_NODE_DOCUMENT);
+  cmark_node *p1 = cmark_node_new(CMARK_NODE_PARAGRAPH);
+  cmark_node *p2 = cmark_node_new(CMARK_NODE_PARAGRAPH);
+  doc->first_child = p1;
+  p1->next = p2;
 
-	INT_EQ(runner, cmark_node_check(doc, NULL), 4, "node_check works");
-	INT_EQ(runner, cmark_node_check(doc, NULL), 0,
-	       "node_check fixes tree");
+  INT_EQ(runner, cmark_node_check(doc, NULL), 4, "node_check works");
+  INT_EQ(runner, cmark_node_check(doc, NULL), 0, "node_check fixes tree");
 
-	cmark_node_free(doc);
+  cmark_node_free(doc);
 }
 
-static void
-iterator(test_batch_runner *runner) {
-	cmark_node *doc = cmark_parse_document("> a *b*\n\nc", 10, CMARK_OPT_DEFAULT);
-	int parnodes = 0;
-	cmark_event_type ev_type;
-	cmark_iter *iter = cmark_iter_new(doc);
-	cmark_node *cur;
-
-	while ((ev_type = cmark_iter_next(iter)) != CMARK_EVENT_DONE) {
-		cur = cmark_iter_get_node(iter);
-		if (cur->type == CMARK_NODE_PARAGRAPH &&
-		    ev_type == CMARK_EVENT_ENTER) {
-			parnodes += 1;
-		}
-	}
-	INT_EQ(runner, parnodes, 2, "iterate correctly counts paragraphs");
-
-	cmark_iter_free(iter);
-	cmark_node_free(doc);
+static void iterator(test_batch_runner *runner) {
+  cmark_node *doc = cmark_parse_document("> a *b*\n\nc", 10, CMARK_OPT_DEFAULT);
+  int parnodes = 0;
+  cmark_event_type ev_type;
+  cmark_iter *iter = cmark_iter_new(doc);
+  cmark_node *cur;
+
+  while ((ev_type = cmark_iter_next(iter)) != CMARK_EVENT_DONE) {
+    cur = cmark_iter_get_node(iter);
+    if (cur->type == CMARK_NODE_PARAGRAPH && ev_type == CMARK_EVENT_ENTER) {
+      parnodes += 1;
+    }
+  }
+  INT_EQ(runner, parnodes, 2, "iterate correctly counts paragraphs");
+
+  cmark_iter_free(iter);
+  cmark_node_free(doc);
 }
 
-static void
-iterator_delete(test_batch_runner *runner) {
-	static const char md[] =
-		"a *b* c\n"
-		"\n"
-		"* item1\n"
-		"* item2\n"
-		"\n"
-		"a `b` c\n"
-		"\n"
-		"* item1\n"
-		"* item2\n";
-	cmark_node *doc  = cmark_parse_document(md, sizeof(md) - 1,
-						CMARK_OPT_DEFAULT);
-	cmark_iter *iter = cmark_iter_new(doc);
-	cmark_event_type ev_type;
-
-	while ((ev_type = cmark_iter_next(iter)) != CMARK_EVENT_DONE) {
-		cmark_node *node = cmark_iter_get_node(iter);
-		// Delete list, emph, and code nodes.
-		if ((ev_type == CMARK_EVENT_EXIT &&
-		     node->type == CMARK_NODE_LIST) ||
-		    (ev_type == CMARK_EVENT_EXIT &&
-		     node->type == CMARK_NODE_EMPH) ||
-		    (ev_type == CMARK_EVENT_ENTER &&
-		     node->type == CMARK_NODE_CODE)) {
-			cmark_node_free(node);
-		}
-	}
-
-	char *html = cmark_render_html(doc, CMARK_OPT_DEFAULT);
-	static const char expected[] =
-		"<p>a  c</p>\n"
-		"<p>a  c</p>\n";
-	STR_EQ(runner, html, expected, "iterate and delete nodes");
-
-	free(html);
-	cmark_iter_free(iter);
-	cmark_node_free(doc);
+static void iterator_delete(test_batch_runner *runner) {
+  static const char md[] = "a *b* c\n"
+                           "\n"
+                           "* item1\n"
+                           "* item2\n"
+                           "\n"
+                           "a `b` c\n"
+                           "\n"
+                           "* item1\n"
+                           "* item2\n";
+  cmark_node *doc = cmark_parse_document(md, sizeof(md) - 1, CMARK_OPT_DEFAULT);
+  cmark_iter *iter = cmark_iter_new(doc);
+  cmark_event_type ev_type;
+
+  while ((ev_type = cmark_iter_next(iter)) != CMARK_EVENT_DONE) {
+    cmark_node *node = cmark_iter_get_node(iter);
+    // Delete list, emph, and code nodes.
+    if ((ev_type == CMARK_EVENT_EXIT && node->type == CMARK_NODE_LIST) ||
+        (ev_type == CMARK_EVENT_EXIT && node->type == CMARK_NODE_EMPH) ||
+        (ev_type == CMARK_EVENT_ENTER && node->type == CMARK_NODE_CODE)) {
+      cmark_node_free(node);
+    }
+  }
+
+  char *html = cmark_render_html(doc, CMARK_OPT_DEFAULT);
+  static const char expected[] = "<p>a  c</p>\n"
+                                 "<p>a  c</p>\n";
+  STR_EQ(runner, html, expected, "iterate and delete nodes");
+
+  free(html);
+  cmark_iter_free(iter);
+  cmark_node_free(doc);
 }
 
-static void
-create_tree(test_batch_runner *runner)
-{
-	char *html;
-	cmark_node *doc = cmark_node_new(CMARK_NODE_DOCUMENT);
-
-	cmark_node *p = cmark_node_new(CMARK_NODE_PARAGRAPH);
-	OK(runner, !cmark_node_insert_before(doc, p),
-	   "insert before root fails");
-	OK(runner, !cmark_node_insert_after(doc, p),
-	   "insert after root fails");
-	OK(runner, cmark_node_append_child(doc, p), "append1");
-	INT_EQ(runner, cmark_node_check(doc, NULL), 0, "append1 consistent");
-	OK(runner, cmark_node_parent(p) == doc, "node_parent");
-
-	cmark_node *emph = cmark_node_new(CMARK_NODE_EMPH);
-	OK(runner, cmark_node_prepend_child(p, emph), "prepend1");
-	INT_EQ(runner, cmark_node_check(doc, NULL), 0, "prepend1 consistent");
-
-	cmark_node *str1 = cmark_node_new(CMARK_NODE_TEXT);
-	cmark_node_set_literal(str1, "Hello, ");
-	OK(runner, cmark_node_prepend_child(p, str1), "prepend2");
-	INT_EQ(runner, cmark_node_check(doc, NULL), 0, "prepend2 consistent");
-
-	cmark_node *str3 = cmark_node_new(CMARK_NODE_TEXT);
-	cmark_node_set_literal(str3, "!");
-	OK(runner, cmark_node_append_child(p, str3), "append2");
-	INT_EQ(runner, cmark_node_check(doc, NULL), 0, "append2 consistent");
-
-	cmark_node *str2 = cmark_node_new(CMARK_NODE_TEXT);
-	cmark_node_set_literal(str2, "world");
-	OK(runner, cmark_node_append_child(emph, str2), "append3");
-	INT_EQ(runner, cmark_node_check(doc, NULL), 0, "append3 consistent");
-
-	html = cmark_render_html(doc, CMARK_OPT_DEFAULT);
-	STR_EQ(runner, html, "<p>Hello, <em>world</em>!</p>\n",
-	       "render_html");
-	free(html);
-
-	OK(runner, cmark_node_insert_before(str1, str3), "ins before1");
-	INT_EQ(runner, cmark_node_check(doc, NULL), 0,
-	       "ins before1 consistent");
-	// 31e
-	OK(runner, cmark_node_first_child(p) == str3, "ins before1 works");
-
-	OK(runner, cmark_node_insert_before(str1, emph), "ins before2");
-	INT_EQ(runner, cmark_node_check(doc, NULL), 0,
-	       "ins before2 consistent");
-	// 3e1
-	OK(runner, cmark_node_last_child(p) == str1, "ins before2 works");
-
-	OK(runner, cmark_node_insert_after(str1, str3), "ins after1");
-	INT_EQ(runner, cmark_node_check(doc, NULL), 0,
-	       "ins after1 consistent");
-	// e13
-	OK(runner, cmark_node_next(str1) == str3, "ins after1 works");
-
-	OK(runner, cmark_node_insert_after(str1, emph), "ins after2");
-	INT_EQ(runner, cmark_node_check(doc, NULL), 0,
-	       "ins after2 consistent");
-	// 1e3
-	OK(runner, cmark_node_previous(emph) == str1, "ins after2 works");
-
-	cmark_node_unlink(emph);
-
-	html = cmark_render_html(doc, CMARK_OPT_DEFAULT);
-	STR_EQ(runner, html, "<p>Hello, !</p>\n",
-	       "render_html after shuffling");
-	free(html);
-
-	cmark_node_free(doc);
-
-	// TODO: Test that the contents of an unlinked inline are valid
-	// after the parent block was destroyed. This doesn't work so far.
-	cmark_node_free(emph);
+static void create_tree(test_batch_runner *runner) {
+  char *html;
+  cmark_node *doc = cmark_node_new(CMARK_NODE_DOCUMENT);
+
+  cmark_node *p = cmark_node_new(CMARK_NODE_PARAGRAPH);
+  OK(runner, !cmark_node_insert_before(doc, p), "insert before root fails");
+  OK(runner, !cmark_node_insert_after(doc, p), "insert after root fails");
+  OK(runner, cmark_node_append_child(doc, p), "append1");
+  INT_EQ(runner, cmark_node_check(doc, NULL), 0, "append1 consistent");
+  OK(runner, cmark_node_parent(p) == doc, "node_parent");
+
+  cmark_node *emph = cmark_node_new(CMARK_NODE_EMPH);
+  OK(runner, cmark_node_prepend_child(p, emph), "prepend1");
+  INT_EQ(runner, cmark_node_check(doc, NULL), 0, "prepend1 consistent");
+
+  cmark_node *str1 = cmark_node_new(CMARK_NODE_TEXT);
+  cmark_node_set_literal(str1, "Hello, ");
+  OK(runner, cmark_node_prepend_child(p, str1), "prepend2");
+  INT_EQ(runner, cmark_node_check(doc, NULL), 0, "prepend2 consistent");
+
+  cmark_node *str3 = cmark_node_new(CMARK_NODE_TEXT);
+  cmark_node_set_literal(str3, "!");
+  OK(runner, cmark_node_append_child(p, str3), "append2");
+  INT_EQ(runner, cmark_node_check(doc, NULL), 0, "append2 consistent");
+
+  cmark_node *str2 = cmark_node_new(CMARK_NODE_TEXT);
+  cmark_node_set_literal(str2, "world");
+  OK(runner, cmark_node_append_child(emph, str2), "append3");
+  INT_EQ(runner, cmark_node_check(doc, NULL), 0, "append3 consistent");
+
+  html = cmark_render_html(doc, CMARK_OPT_DEFAULT);
+  STR_EQ(runner, html, "<p>Hello, <em>world</em>!</p>\n", "render_html");
+  free(html);
+
+  OK(runner, cmark_node_insert_before(str1, str3), "ins before1");
+  INT_EQ(runner, cmark_node_check(doc, NULL), 0, "ins before1 consistent");
+  // 31e
+  OK(runner, cmark_node_first_child(p) == str3, "ins before1 works");
+
+  OK(runner, cmark_node_insert_before(str1, emph), "ins before2");
+  INT_EQ(runner, cmark_node_check(doc, NULL), 0, "ins before2 consistent");
+  // 3e1
+  OK(runner, cmark_node_last_child(p) == str1, "ins before2 works");
+
+  OK(runner, cmark_node_insert_after(str1, str3), "ins after1");
+  INT_EQ(runner, cmark_node_check(doc, NULL), 0, "ins after1 consistent");
+  // e13
+  OK(runner, cmark_node_next(str1) == str3, "ins after1 works");
+
+  OK(runner, cmark_node_insert_after(str1, emph), "ins after2");
+  INT_EQ(runner, cmark_node_check(doc, NULL), 0, "ins after2 consistent");
+  // 1e3
+  OK(runner, cmark_node_previous(emph) == str1, "ins after2 works");
+
+  cmark_node_unlink(emph);
+
+  html = cmark_render_html(doc, CMARK_OPT_DEFAULT);
+  STR_EQ(runner, html, "<p>Hello, !</p>\n", "render_html after shuffling");
+  free(html);
+
+  cmark_node_free(doc);
+
+  // TODO: Test that the contents of an unlinked inline are valid
+  // after the parent block was destroyed. This doesn't work so far.
+  cmark_node_free(emph);
 }
 
-static void
-custom_nodes(test_batch_runner *runner)
-{
-	char *html;
-        char *man;
-	cmark_node *doc = cmark_node_new(CMARK_NODE_DOCUMENT);
-	cmark_node *p = cmark_node_new(CMARK_NODE_PARAGRAPH);
-	cmark_node_append_child(doc, p);
-	cmark_node *ci = cmark_node_new(CMARK_NODE_CUSTOM_INLINE);
-	cmark_node *str1 = cmark_node_new(CMARK_NODE_TEXT);
-	cmark_node_set_literal(str1, "Hello");
-	OK(runner, cmark_node_append_child(ci, str1), "append1");
-	OK(runner, cmark_node_set_on_enter(ci, "<ON ENTER|"),
-		"set_on_enter");
-	OK(runner, cmark_node_set_on_exit(ci, "|ON EXIT>"),
-		"set_on_exit");
-	STR_EQ(runner, cmark_node_get_on_enter(ci), "<ON ENTER|",
-	       "get_on_enter");
-	STR_EQ(runner, cmark_node_get_on_exit(ci), "|ON EXIT>",
-	       "get_on_exit");
-	cmark_node_append_child(p, ci);
-	cmark_node *cb = cmark_node_new(CMARK_NODE_CUSTOM_BLOCK);
-	cmark_node_set_on_enter(cb, "<on enter|");
-	// leave on_exit unset
-	STR_EQ(runner, cmark_node_get_on_exit(cb), "",
-	       "get_on_exit (empty)");
-	cmark_node_append_child(doc, cb);
-
-	html = cmark_render_html(doc, CMARK_OPT_DEFAULT);
-	STR_EQ(runner, html, "<p><ON ENTER|Hello|ON EXIT></p>\n<on enter|\n",
-	       "render_html");
-	free(html);
-
-	man = cmark_render_man(doc, CMARK_OPT_DEFAULT, 0);
-	STR_EQ(runner, man, ".PP\n<ON ENTER|Hello|ON EXIT>\n<on enter|\n",
-	       "render_man");
-	free(man);
-
-	cmark_node_free(doc);
+static void custom_nodes(test_batch_runner *runner) {
+  char *html;
+  char *man;
+  cmark_node *doc = cmark_node_new(CMARK_NODE_DOCUMENT);
+  cmark_node *p = cmark_node_new(CMARK_NODE_PARAGRAPH);
+  cmark_node_append_child(doc, p);
+  cmark_node *ci = cmark_node_new(CMARK_NODE_CUSTOM_INLINE);
+  cmark_node *str1 = cmark_node_new(CMARK_NODE_TEXT);
+  cmark_node_set_literal(str1, "Hello");
+  OK(runner, cmark_node_append_child(ci, str1), "append1");
+  OK(runner, cmark_node_set_on_enter(ci, "<ON ENTER|"), "set_on_enter");
+  OK(runner, cmark_node_set_on_exit(ci, "|ON EXIT>"), "set_on_exit");
+  STR_EQ(runner, cmark_node_get_on_enter(ci), "<ON ENTER|", "get_on_enter");
+  STR_EQ(runner, cmark_node_get_on_exit(ci), "|ON EXIT>", "get_on_exit");
+  cmark_node_append_child(p, ci);
+  cmark_node *cb = cmark_node_new(CMARK_NODE_CUSTOM_BLOCK);
+  cmark_node_set_on_enter(cb, "<on enter|");
+  // leave on_exit unset
+  STR_EQ(runner, cmark_node_get_on_exit(cb), "", "get_on_exit (empty)");
+  cmark_node_append_child(doc, cb);
+
+  html = cmark_render_html(doc, CMARK_OPT_DEFAULT);
+  STR_EQ(runner, html, "<p><ON ENTER|Hello|ON EXIT></p>\n<on enter|\n",
+         "render_html");
+  free(html);
+
+  man = cmark_render_man(doc, CMARK_OPT_DEFAULT, 0);
+  STR_EQ(runner, man, ".PP\n<ON ENTER|Hello|ON EXIT>\n<on enter|\n",
+         "render_man");
+  free(man);
+
+  cmark_node_free(doc);
 }
 
-void
-hierarchy(test_batch_runner *runner)
-{
-	cmark_node *bquote1 = cmark_node_new(CMARK_NODE_BLOCK_QUOTE);
-	cmark_node *bquote2 = cmark_node_new(CMARK_NODE_BLOCK_QUOTE);
-	cmark_node *bquote3 = cmark_node_new(CMARK_NODE_BLOCK_QUOTE);
-
-	OK(runner, cmark_node_append_child(bquote1, bquote2),
-	   "append bquote2");
-	OK(runner, cmark_node_append_child(bquote2, bquote3),
-	   "append bquote3");
-	OK(runner, !cmark_node_append_child(bquote3, bquote3),
-	   "adding a node as child of itself fails");
-	OK(runner, !cmark_node_append_child(bquote3, bquote1),
-	   "adding a parent as child fails");
-
-	cmark_node_free(bquote1);
-
-	int max_node_type = CMARK_NODE_LAST_BLOCK > CMARK_NODE_LAST_INLINE
-			    ? CMARK_NODE_LAST_BLOCK : CMARK_NODE_LAST_INLINE;
-	OK(runner, max_node_type < 32, "all node types < 32");
-
-	int list_item_flag = 1 << CMARK_NODE_ITEM;
-	int top_level_blocks =
-		(1 << CMARK_NODE_BLOCK_QUOTE) |
-		(1 << CMARK_NODE_LIST) |
-		(1 << CMARK_NODE_CODE_BLOCK) |
-		(1 << CMARK_NODE_HTML_BLOCK) |
-		(1 << CMARK_NODE_PARAGRAPH) |
-		(1 << CMARK_NODE_HEADING) |
-		(1 << CMARK_NODE_THEMATIC_BREAK);
-	int all_inlines =
-		(1 << CMARK_NODE_TEXT) |
-		(1 << CMARK_NODE_SOFTBREAK) |
-		(1 << CMARK_NODE_LINEBREAK) |
-		(1 << CMARK_NODE_CODE) |
-		(1 << CMARK_NODE_HTML_INLINE) |
-		(1 << CMARK_NODE_EMPH) |
-		(1 << CMARK_NODE_STRONG) |
-		(1 << CMARK_NODE_LINK) |
-		(1 << CMARK_NODE_IMAGE);
-
-	test_content(runner, CMARK_NODE_DOCUMENT,      top_level_blocks);
-	test_content(runner, CMARK_NODE_BLOCK_QUOTE,   top_level_blocks);
-	test_content(runner, CMARK_NODE_LIST,          list_item_flag);
-	test_content(runner, CMARK_NODE_ITEM,          top_level_blocks);
-	test_content(runner, CMARK_NODE_CODE_BLOCK ,   0);
-	test_content(runner, CMARK_NODE_HTML_BLOCK,          0);
-	test_content(runner, CMARK_NODE_PARAGRAPH,     all_inlines);
-	test_content(runner, CMARK_NODE_HEADING,        all_inlines);
-	test_content(runner, CMARK_NODE_THEMATIC_BREAK,         0);
-	test_content(runner, CMARK_NODE_TEXT,	       0);
-	test_content(runner, CMARK_NODE_SOFTBREAK,     0);
-	test_content(runner, CMARK_NODE_LINEBREAK,     0);
-	test_content(runner, CMARK_NODE_CODE,   0);
-	test_content(runner, CMARK_NODE_HTML_INLINE,   0);
-	test_content(runner, CMARK_NODE_EMPH,          all_inlines);
-	test_content(runner, CMARK_NODE_STRONG,        all_inlines);
-	test_content(runner, CMARK_NODE_LINK,          all_inlines);
-	test_content(runner, CMARK_NODE_IMAGE,         all_inlines);
+void hierarchy(test_batch_runner *runner) {
+  cmark_node *bquote1 = cmark_node_new(CMARK_NODE_BLOCK_QUOTE);
+  cmark_node *bquote2 = cmark_node_new(CMARK_NODE_BLOCK_QUOTE);
+  cmark_node *bquote3 = cmark_node_new(CMARK_NODE_BLOCK_QUOTE);
+
+  OK(runner, cmark_node_append_child(bquote1, bquote2), "append bquote2");
+  OK(runner, cmark_node_append_child(bquote2, bquote3), "append bquote3");
+  OK(runner, !cmark_node_append_child(bquote3, bquote3),
+     "adding a node as child of itself fails");
+  OK(runner, !cmark_node_append_child(bquote3, bquote1),
+     "adding a parent as child fails");
+
+  cmark_node_free(bquote1);
+
+  int max_node_type = CMARK_NODE_LAST_BLOCK > CMARK_NODE_LAST_INLINE
+                          ? CMARK_NODE_LAST_BLOCK
+                          : CMARK_NODE_LAST_INLINE;
+  OK(runner, max_node_type < 32, "all node types < 32");
+
+  int list_item_flag = 1 << CMARK_NODE_ITEM;
+  int top_level_blocks =
+      (1 << CMARK_NODE_BLOCK_QUOTE) | (1 << CMARK_NODE_LIST) |
+      (1 << CMARK_NODE_CODE_BLOCK) | (1 << CMARK_NODE_HTML_BLOCK) |
+      (1 << CMARK_NODE_PARAGRAPH) | (1 << CMARK_NODE_HEADING) |
+      (1 << CMARK_NODE_THEMATIC_BREAK);
+  int all_inlines = (1 << CMARK_NODE_TEXT) | (1 << CMARK_NODE_SOFTBREAK) |
+                    (1 << CMARK_NODE_LINEBREAK) | (1 << CMARK_NODE_CODE) |
+                    (1 << CMARK_NODE_HTML_INLINE) | (1 << CMARK_NODE_EMPH) |
+                    (1 << CMARK_NODE_STRONG) | (1 << CMARK_NODE_LINK) |
+                    (1 << CMARK_NODE_IMAGE);
+
+  test_content(runner, CMARK_NODE_DOCUMENT, top_level_blocks);
+  test_content(runner, CMARK_NODE_BLOCK_QUOTE, top_level_blocks);
+  test_content(runner, CMARK_NODE_LIST, list_item_flag);
+  test_content(runner, CMARK_NODE_ITEM, top_level_blocks);
+  test_content(runner, CMARK_NODE_CODE_BLOCK, 0);
+  test_content(runner, CMARK_NODE_HTML_BLOCK, 0);
+  test_content(runner, CMARK_NODE_PARAGRAPH, all_inlines);
+  test_content(runner, CMARK_NODE_HEADING, all_inlines);
+  test_content(runner, CMARK_NODE_THEMATIC_BREAK, 0);
+  test_content(runner, CMARK_NODE_TEXT, 0);
+  test_content(runner, CMARK_NODE_SOFTBREAK, 0);
+  test_content(runner, CMARK_NODE_LINEBREAK, 0);
+  test_content(runner, CMARK_NODE_CODE, 0);
+  test_content(runner, CMARK_NODE_HTML_INLINE, 0);
+  test_content(runner, CMARK_NODE_EMPH, all_inlines);
+  test_content(runner, CMARK_NODE_STRONG, all_inlines);
+  test_content(runner, CMARK_NODE_LINK, all_inlines);
+  test_content(runner, CMARK_NODE_IMAGE, all_inlines);
 }
 
-static void
-test_content(test_batch_runner *runner, cmark_node_type type,
-	     int allowed_content)
-{
-	cmark_node *node = cmark_node_new(type);
+static void test_content(test_batch_runner *runner, cmark_node_type type,
+                         int allowed_content) {
+  cmark_node *node = cmark_node_new(type);
 
-	for (int i = 0; i < num_node_types; ++i) {
-		cmark_node_type child_type = node_types[i];
-		cmark_node *child = cmark_node_new(child_type);
+  for (int i = 0; i < num_node_types; ++i) {
+    cmark_node_type child_type = node_types[i];
+    cmark_node *child = cmark_node_new(child_type);
 
-		int got = cmark_node_append_child(node, child);
-		int expected = (allowed_content >> child_type) & 1;
+    int got = cmark_node_append_child(node, child);
+    int expected = (allowed_content >> child_type) & 1;
 
-		INT_EQ(runner, got, expected,
-		       "add %d as child of %d", child_type, type);
+    INT_EQ(runner, got, expected, "add %d as child of %d", child_type, type);
 
-		cmark_node_free(child);
-	}
+    cmark_node_free(child);
+  }
 
-	cmark_node_free(node);
+  cmark_node_free(node);
 }
 
-static void
-parser(test_batch_runner *runner)
-{
-	test_md_to_html(runner, "No newline", "<p>No newline</p>\n",
-			"document without trailing newline");
+static void parser(test_batch_runner *runner) {
+  test_md_to_html(runner, "No newline", "<p>No newline</p>\n",
+                  "document without trailing newline");
 }
 
-static void
-render_html(test_batch_runner *runner)
-{
-	char *html;
-
-	static const char markdown[] =
-		"foo *bar*\n"
-		"\n"
-		"paragraph 2\n";
-	cmark_node *doc = cmark_parse_document(markdown, sizeof(markdown) - 1,
-		CMARK_OPT_DEFAULT);
-
-	cmark_node *paragraph = cmark_node_first_child(doc);
-	html = cmark_render_html(paragraph, CMARK_OPT_DEFAULT);
-	STR_EQ(runner, html, "<p>foo <em>bar</em></p>\n",
-	       "render single paragraph");
-	free(html);
-
-	cmark_node *string = cmark_node_first_child(paragraph);
-	html = cmark_render_html(string, CMARK_OPT_DEFAULT);
-	STR_EQ(runner, html, "foo ", "render single inline");
-	free(html);
-
-	cmark_node *emph = cmark_node_next(string);
-	html = cmark_render_html(emph, CMARK_OPT_DEFAULT);
-	STR_EQ(runner, html, "<em>bar</em>", "render inline with children");
-	free(html);
-
-	cmark_node_free(doc);
+static void render_html(test_batch_runner *runner) {
+  char *html;
+
+  static const char markdown[] = "foo *bar*\n"
+                                 "\n"
+                                 "paragraph 2\n";
+  cmark_node *doc =
+      cmark_parse_document(markdown, sizeof(markdown) - 1, CMARK_OPT_DEFAULT);
+
+  cmark_node *paragraph = cmark_node_first_child(doc);
+  html = cmark_render_html(paragraph, CMARK_OPT_DEFAULT);
+  STR_EQ(runner, html, "<p>foo <em>bar</em></p>\n", "render single paragraph");
+  free(html);
+
+  cmark_node *string = cmark_node_first_child(paragraph);
+  html = cmark_render_html(string, CMARK_OPT_DEFAULT);
+  STR_EQ(runner, html, "foo ", "render single inline");
+  free(html);
+
+  cmark_node *emph = cmark_node_next(string);
+  html = cmark_render_html(emph, CMARK_OPT_DEFAULT);
+  STR_EQ(runner, html, "<em>bar</em>", "render inline with children");
+  free(html);
+
+  cmark_node_free(doc);
 }
 
-static void
-utf8(test_batch_runner *runner)
-{
-	// Ranges
-	test_char(runner, 1, "\x01", "valid utf8 01");
-	test_char(runner, 1, "\x7F", "valid utf8 7F");
-	test_char(runner, 0, "\x80", "invalid utf8 80");
-	test_char(runner, 0, "\xBF", "invalid utf8 BF");
-	test_char(runner, 0, "\xC0\x80", "invalid utf8 C080");
-	test_char(runner, 0, "\xC1\xBF", "invalid utf8 C1BF");
-	test_char(runner, 1, "\xC2\x80", "valid utf8 C280");
-	test_char(runner, 1, "\xDF\xBF", "valid utf8 DFBF");
-	test_char(runner, 0, "\xE0\x80\x80", "invalid utf8 E08080");
-	test_char(runner, 0, "\xE0\x9F\xBF", "invalid utf8 E09FBF");
-	test_char(runner, 1, "\xE0\xA0\x80", "valid utf8 E0A080");
-	test_char(runner, 1, "\xED\x9F\xBF", "valid utf8 ED9FBF");
-	test_char(runner, 0, "\xED\xA0\x80", "invalid utf8 EDA080");
-	test_char(runner, 0, "\xED\xBF\xBF", "invalid utf8 EDBFBF");
-	test_char(runner, 0, "\xF0\x80\x80\x80", "invalid utf8 F0808080");
-	test_char(runner, 0, "\xF0\x8F\xBF\xBF", "invalid utf8 F08FBFBF");
-	test_char(runner, 1, "\xF0\x90\x80\x80", "valid utf8 F0908080");
-	test_char(runner, 1, "\xF4\x8F\xBF\xBF", "valid utf8 F48FBFBF");
-	test_char(runner, 0, "\xF4\x90\x80\x80", "invalid utf8 F4908080");
-	test_char(runner, 0, "\xF7\xBF\xBF\xBF", "invalid utf8 F7BFBFBF");
-	test_char(runner, 0, "\xF8", "invalid utf8 F8");
-	test_char(runner, 0, "\xFF", "invalid utf8 FF");
-
-	// Incomplete byte sequences at end of input
-	test_incomplete_char(runner, "\xE0\xA0", "invalid utf8 E0A0");
-	test_incomplete_char(runner, "\xF0\x90\x80", "invalid utf8 F09080");
-
-	// Invalid continuation bytes
-	test_continuation_byte(runner, "\xC2\x80");
-	test_continuation_byte(runner, "\xE0\xA0\x80");
-	test_continuation_byte(runner, "\xF0\x90\x80\x80");
-
-	// Test string containing null character
-	static const char string_with_null[] = "((((\0))))";
-	char *html = cmark_markdown_to_html(string_with_null,
-					    sizeof(string_with_null) - 1,
-		                            CMARK_OPT_DEFAULT);
-	STR_EQ(runner, html, "<p>((((" UTF8_REPL "))))</p>\n",
-	       "utf8 with U+0000");
-	free(html);
+static void utf8(test_batch_runner *runner) {
+  // Ranges
+  test_char(runner, 1, "\x01", "valid utf8 01");
+  test_char(runner, 1, "\x7F", "valid utf8 7F");
+  test_char(runner, 0, "\x80", "invalid utf8 80");
+  test_char(runner, 0, "\xBF", "invalid utf8 BF");
+  test_char(runner, 0, "\xC0\x80", "invalid utf8 C080");
+  test_char(runner, 0, "\xC1\xBF", "invalid utf8 C1BF");
+  test_char(runner, 1, "\xC2\x80", "valid utf8 C280");
+  test_char(runner, 1, "\xDF\xBF", "valid utf8 DFBF");
+  test_char(runner, 0, "\xE0\x80\x80", "invalid utf8 E08080");
+  test_char(runner, 0, "\xE0\x9F\xBF", "invalid utf8 E09FBF");
+  test_char(runner, 1, "\xE0\xA0\x80", "valid utf8 E0A080");
+  test_char(runner, 1, "\xED\x9F\xBF", "valid utf8 ED9FBF");
+  test_char(runner, 0, "\xED\xA0\x80", "invalid utf8 EDA080");
+  test_char(runner, 0, "\xED\xBF\xBF", "invalid utf8 EDBFBF");
+  test_char(runner, 0, "\xF0\x80\x80\x80", "invalid utf8 F0808080");
+  test_char(runner, 0, "\xF0\x8F\xBF\xBF", "invalid utf8 F08FBFBF");
+  test_char(runner, 1, "\xF0\x90\x80\x80", "valid utf8 F0908080");
+  test_char(runner, 1, "\xF4\x8F\xBF\xBF", "valid utf8 F48FBFBF");
+  test_char(runner, 0, "\xF4\x90\x80\x80", "invalid utf8 F4908080");
+  test_char(runner, 0, "\xF7\xBF\xBF\xBF", "invalid utf8 F7BFBFBF");
+  test_char(runner, 0, "\xF8", "invalid utf8 F8");
+  test_char(runner, 0, "\xFF", "invalid utf8 FF");
+
+  // Incomplete byte sequences at end of input
+  test_incomplete_char(runner, "\xE0\xA0", "invalid utf8 E0A0");
+  test_incomplete_char(runner, "\xF0\x90\x80", "invalid utf8 F09080");
+
+  // Invalid continuation bytes
+  test_continuation_byte(runner, "\xC2\x80");
+  test_continuation_byte(runner, "\xE0\xA0\x80");
+  test_continuation_byte(runner, "\xF0\x90\x80\x80");
+
+  // Test string containing null character
+  static const char string_with_null[] = "((((\0))))";
+  char *html = cmark_markdown_to_html(
+      string_with_null, sizeof(string_with_null) - 1, CMARK_OPT_DEFAULT);
+  STR_EQ(runner, html, "<p>((((" UTF8_REPL "))))</p>\n", "utf8 with U+0000");
+  free(html);
 }
 
-static void
-test_char(test_batch_runner *runner, int valid, const char *utf8,
-	  const char *msg)
-{
-	char buf[20];
-	sprintf(buf, "((((%s))))", utf8);
-
-	if (valid) {
-		char expected[30];
-		sprintf(expected, "<p>((((%s))))</p>\n", utf8);
-		test_md_to_html(runner, buf, expected, msg);
-	}
-	else {
-		test_md_to_html(runner, buf, "<p>((((" UTF8_REPL "))))</p>\n",
-				msg);
-	}
+static void test_char(test_batch_runner *runner, int valid, const char *utf8,
+                      const char *msg) {
+  char buf[20];
+  sprintf(buf, "((((%s))))", utf8);
+
+  if (valid) {
+    char expected[30];
+    sprintf(expected, "<p>((((%s))))</p>\n", utf8);
+    test_md_to_html(runner, buf, expected, msg);
+  } else {
+    test_md_to_html(runner, buf, "<p>((((" UTF8_REPL "))))</p>\n", msg);
+  }
 }
 
-static void
-test_incomplete_char(test_batch_runner *runner, const char *utf8,
-		     const char *msg)
-{
-	char buf[20];
-	sprintf(buf, "----%s", utf8);
-	test_md_to_html(runner, buf, "<p>----" UTF8_REPL "</p>\n", msg);
+static void test_incomplete_char(test_batch_runner *runner, const char *utf8,
+                                 const char *msg) {
+  char buf[20];
+  sprintf(buf, "----%s", utf8);
+  test_md_to_html(runner, buf, "<p>----" UTF8_REPL "</p>\n", msg);
 }
 
-static void
-test_continuation_byte(test_batch_runner *runner, const char *utf8)
-{
-	size_t len = strlen(utf8);
-
-	for (size_t pos = 1; pos < len; ++pos) {
-		char buf[20];
-		sprintf(buf, "((((%s))))", utf8);
-		buf[4+pos] = '\x20';
-
-		char expected[50];
-		strcpy(expected, "<p>((((" UTF8_REPL "\x20");
-		for (size_t i = pos + 1; i < len; ++i) {
-			strcat(expected, UTF8_REPL);
-		}
-		strcat(expected, "))))</p>\n");
-
-		char *html = cmark_markdown_to_html(buf, strlen(buf),
-						    CMARK_OPT_VALIDATE_UTF8);
-		STR_EQ(runner, html, expected,
-		       "invalid utf8 continuation byte %d/%d", pos, len);
-		free(html);
-	}
+static void test_continuation_byte(test_batch_runner *runner,
+                                   const char *utf8) {
+  size_t len = strlen(utf8);
+
+  for (size_t pos = 1; pos < len; ++pos) {
+    char buf[20];
+    sprintf(buf, "((((%s))))", utf8);
+    buf[4 + pos] = '\x20';
+
+    char expected[50];
+    strcpy(expected, "<p>((((" UTF8_REPL "\x20");
+    for (size_t i = pos + 1; i < len; ++i) {
+      strcat(expected, UTF8_REPL);
+    }
+    strcat(expected, "))))</p>\n");
+
+    char *html =
+        cmark_markdown_to_html(buf, strlen(buf), CMARK_OPT_VALIDATE_UTF8);
+    STR_EQ(runner, html, expected, "invalid utf8 continuation byte %d/%d", pos,
+           len);
+    free(html);
+  }
 }
 
-static void
-line_endings(test_batch_runner *runner)
-{
-	// Test list with different line endings
-	static const char list_with_endings[] =
-		"- a\n- b\r\n- c\r- d";
-	char *html = cmark_markdown_to_html(list_with_endings,
-					    sizeof(list_with_endings) - 1,
-		                            CMARK_OPT_DEFAULT);
-	STR_EQ(runner, html, "<ul>\n<li>a</li>\n<li>b</li>\n<li>c</li>\n<li>d</li>\n</ul>\n",
-	       "list with different line endings");
-	free(html);
-
-	static const char crlf_lines[] = "line\r\nline\r\n";
-	html = cmark_markdown_to_html(crlf_lines,
-				      sizeof(crlf_lines) - 1,
-				      CMARK_OPT_DEFAULT | CMARK_OPT_HARDBREAKS);
-	STR_EQ(runner, html, "<p>line<br />\nline</p>\n",
-	       "crlf endings with CMARK_OPT_HARDBREAKS");
-	free(html);
-
-	static const char no_line_ending[] = "```\nline\n```";
-	html = cmark_markdown_to_html(no_line_ending,
-				      sizeof(no_line_ending) - 1,
-				      CMARK_OPT_DEFAULT);
-	STR_EQ(runner, html, "<pre><code>line\n</code></pre>\n",
-	       "fenced code block with no final newline");
-	free(html);
+static void line_endings(test_batch_runner *runner) {
+  // Test list with different line endings
+  static const char list_with_endings[] = "- a\n- b\r\n- c\r- d";
+  char *html = cmark_markdown_to_html(
+      list_with_endings, sizeof(list_with_endings) - 1, CMARK_OPT_DEFAULT);
+  STR_EQ(runner, html,
+         "<ul>\n<li>a</li>\n<li>b</li>\n<li>c</li>\n<li>d</li>\n</ul>\n",
+         "list with different line endings");
+  free(html);
+
+  static const char crlf_lines[] = "line\r\nline\r\n";
+  html = cmark_markdown_to_html(crlf_lines, sizeof(crlf_lines) - 1,
+                                CMARK_OPT_DEFAULT | CMARK_OPT_HARDBREAKS);
+  STR_EQ(runner, html, "<p>line<br />\nline</p>\n",
+         "crlf endings with CMARK_OPT_HARDBREAKS");
+  free(html);
+
+  static const char no_line_ending[] = "```\nline\n```";
+  html = cmark_markdown_to_html(no_line_ending, sizeof(no_line_ending) - 1,
+                                CMARK_OPT_DEFAULT);
+  STR_EQ(runner, html, "<pre><code>line\n</code></pre>\n",
+         "fenced code block with no final newline");
+  free(html);
 }
 
-static void
-numeric_entities(test_batch_runner *runner)
-{
-	test_md_to_html(runner, "&#0;", "<p>" UTF8_REPL "</p>\n",
-			"Invalid numeric entity 0");
-	test_md_to_html(runner, "&#55295;", "<p>\xED\x9F\xBF</p>\n",
-			"Valid numeric entity 0xD7FF");
-	test_md_to_html(runner, "&#xD800;", "<p>" UTF8_REPL "</p>\n",
-			"Invalid numeric entity 0xD800");
-	test_md_to_html(runner, "&#xDFFF;", "<p>" UTF8_REPL "</p>\n",
-			"Invalid numeric entity 0xDFFF");
-	test_md_to_html(runner, "&#57344;", "<p>\xEE\x80\x80</p>\n",
-			"Valid numeric entity 0xE000");
-	test_md_to_html(runner, "&#x10FFFF;", "<p>\xF4\x8F\xBF\xBF</p>\n",
-			"Valid numeric entity 0x10FFFF");
-	test_md_to_html(runner, "&#x110000;", "<p>" UTF8_REPL "</p>\n",
-			"Invalid numeric entity 0x110000");
-	test_md_to_html(runner, "&#x80000000;", "<p>" UTF8_REPL "</p>\n",
-			"Invalid numeric entity 0x80000000");
-	test_md_to_html(runner, "&#xFFFFFFFF;", "<p>" UTF8_REPL "</p>\n",
-			"Invalid numeric entity 0xFFFFFFFF");
-	test_md_to_html(runner, "&#99999999;", "<p>" UTF8_REPL "</p>\n",
-			"Invalid numeric entity 99999999");
-
-	test_md_to_html(runner, "&#;", "<p>&amp;#;</p>\n",
-			"Min decimal entity length");
-	test_md_to_html(runner, "&#x;", "<p>&amp;#x;</p>\n",
-			"Min hexadecimal entity length");
-	test_md_to_html(runner, "&#999999999;", "<p>&amp;#999999999;</p>\n",
-			"Max decimal entity length");
-	test_md_to_html(runner, "&#x000000041;", "<p>&amp;#x000000041;</p>\n",
-			"Max hexadecimal entity length");
+static void numeric_entities(test_batch_runner *runner) {
+  test_md_to_html(runner, "&#0;", "<p>" UTF8_REPL "</p>\n",
+                  "Invalid numeric entity 0");
+  test_md_to_html(runner, "&#55295;", "<p>\xED\x9F\xBF</p>\n",
+                  "Valid numeric entity 0xD7FF");
+  test_md_to_html(runner, "&#xD800;", "<p>" UTF8_REPL "</p>\n",
+                  "Invalid numeric entity 0xD800");
+  test_md_to_html(runner, "&#xDFFF;", "<p>" UTF8_REPL "</p>\n",
+                  "Invalid numeric entity 0xDFFF");
+  test_md_to_html(runner, "&#57344;", "<p>\xEE\x80\x80</p>\n",
+                  "Valid numeric entity 0xE000");
+  test_md_to_html(runner, "&#x10FFFF;", "<p>\xF4\x8F\xBF\xBF</p>\n",
+                  "Valid numeric entity 0x10FFFF");
+  test_md_to_html(runner, "&#x110000;", "<p>" UTF8_REPL "</p>\n",
+                  "Invalid numeric entity 0x110000");
+  test_md_to_html(runner, "&#x80000000;", "<p>" UTF8_REPL "</p>\n",
+                  "Invalid numeric entity 0x80000000");
+  test_md_to_html(runner, "&#xFFFFFFFF;", "<p>" UTF8_REPL "</p>\n",
+                  "Invalid numeric entity 0xFFFFFFFF");
+  test_md_to_html(runner, "&#99999999;", "<p>" UTF8_REPL "</p>\n",
+                  "Invalid numeric entity 99999999");
+
+  test_md_to_html(runner, "&#;", "<p>&amp;#;</p>\n",
+                  "Min decimal entity length");
+  test_md_to_html(runner, "&#x;", "<p>&amp;#x;</p>\n",
+                  "Min hexadecimal entity length");
+  test_md_to_html(runner, "&#999999999;", "<p>&amp;#999999999;</p>\n",
+                  "Max decimal entity length");
+  test_md_to_html(runner, "&#x000000041;", "<p>&amp;#x000000041;</p>\n",
+                  "Max hexadecimal entity length");
 }
 
-static void
-test_safe(test_batch_runner *runner)
-{
-	// Test safe mode
-	static const char raw_html[] =
-		"<div>\nhi\n</div>\n\n<a>hi</a>\n[link](JAVAscript:alert('hi'))\n![image](file:my.js)\n";
-	char *html = cmark_markdown_to_html(raw_html,
-					    sizeof(raw_html) - 1,
-		                            CMARK_OPT_DEFAULT |
-					    CMARK_OPT_SAFE);
-	STR_EQ(runner, html, "<!-- raw HTML omitted -->\n<p><!-- raw HTML omitted -->hi<!-- raw HTML omitted -->\n<a href=\"\">link</a>\n<img src=\"\" alt=\"image\" /></p>\n",
-	       "input with raw HTML and dangerous links");
-	free(html);
+static void test_safe(test_batch_runner *runner) {
+  // Test safe mode
+  static const char raw_html[] = "<div>\nhi\n</div>\n\n<a>hi</"
+                                 "a>\n[link](JAVAscript:alert('hi'))\n![image]("
+                                 "file:my.js)\n";
+  char *html = cmark_markdown_to_html(raw_html, sizeof(raw_html) - 1,
+                                      CMARK_OPT_DEFAULT | CMARK_OPT_SAFE);
+  STR_EQ(runner, html, "<!-- raw HTML omitted -->\n<p><!-- raw HTML omitted "
+                       "-->hi<!-- raw HTML omitted -->\n<a "
+                       "href=\"\">link</a>\n<img src=\"\" alt=\"image\" "
+                       "/></p>\n",
+         "input with raw HTML and dangerous links");
+  free(html);
 }
 
-static void
-test_md_to_html(test_batch_runner *runner, const char *markdown,
-		const char *expected_html, const char *msg)
-{
-	char *html = cmark_markdown_to_html(markdown, strlen(markdown),
-					    CMARK_OPT_VALIDATE_UTF8);
-	STR_EQ(runner, html, expected_html, msg);
-	free(html);
+static void test_md_to_html(test_batch_runner *runner, const char *markdown,
+                            const char *expected_html, const char *msg) {
+  char *html = cmark_markdown_to_html(markdown, strlen(markdown),
+                                      CMARK_OPT_VALIDATE_UTF8);
+  STR_EQ(runner, html, expected_html, msg);
+  free(html);
 }
 
 int main() {
-	int retval;
-	test_batch_runner *runner = test_batch_runner_new();
-
-	version(runner);
-	constructor(runner);
-	accessors(runner);
-	node_check(runner);
-	iterator(runner);
-	iterator_delete(runner);
-	create_tree(runner);
-	custom_nodes(runner);
-	hierarchy(runner);
-	parser(runner);
-	render_html(runner);
-	utf8(runner);
-	line_endings(runner);
-	numeric_entities(runner);
-	test_cplusplus(runner);
-	test_safe(runner);
-
-	test_print_summary(runner);
-	retval =  test_ok(runner) ? 0 : 1;
-	free(runner);
-
-	return retval;
+  int retval;
+  test_batch_runner *runner = test_batch_runner_new();
+
+  version(runner);
+  constructor(runner);
+  accessors(runner);
+  node_check(runner);
+  iterator(runner);
+  iterator_delete(runner);
+  create_tree(runner);
+  custom_nodes(runner);
+  hierarchy(runner);
+  parser(runner);
+  render_html(runner);
+  utf8(runner);
+  line_endings(runner);
+  numeric_entities(runner);
+  test_cplusplus(runner);
+  test_safe(runner);
+
+  test_print_summary(runner);
+  retval = test_ok(runner) ? 0 : 1;
+  free(runner);
+
+  return retval;
 }

diff --git a/src/blocks.c b/src/blocks.c
@@ -336,7 +336,8 @@ static void process_inlines(cmark_node *root, cmark_reference_map *refmap,
   while ((ev_type = cmark_iter_next(iter)) != CMARK_EVENT_DONE) {
     cur = cmark_iter_get_node(iter);
     if (ev_type == CMARK_EVENT_ENTER) {
-      if (cur->type == CMARK_NODE_PARAGRAPH || cur->type == CMARK_NODE_HEADING) {
+      if (cur->type == CMARK_NODE_PARAGRAPH ||
+          cur->type == CMARK_NODE_HEADING) {
         cmark_parse_inlines(cur, refmap, options);
       }
     }
@@ -812,7 +813,8 @@ static void S_process_line(cmark_parser *parser, const unsigned char *buffer,
 
     } else if (!indented &&
                !(container->type == CMARK_NODE_PARAGRAPH && !all_matched) &&
-               (matched = scan_thematic_break(&input, parser->first_nonspace))) {
+               (matched =
+                    scan_thematic_break(&input, parser->first_nonspace))) {
 
       // it's only now that we know the line is not part of a setext heading:
       container = add_child(parser, container, CMARK_NODE_THEMATIC_BREAK,

diff --git a/src/chunk.h b/src/chunk.h
@@ -48,8 +48,8 @@ static CMARK_INLINE void cmark_chunk_trim(cmark_chunk *c) {
   cmark_chunk_rtrim(c);
 }
 
-static CMARK_INLINE bufsize_t cmark_chunk_strchr(cmark_chunk *ch, int c,
-                                                 bufsize_t offset) {
+static CMARK_INLINE bufsize_t
+    cmark_chunk_strchr(cmark_chunk *ch, int c, bufsize_t offset) {
   const unsigned char *p =
       (unsigned char *)memchr(ch->data + offset, c, ch->len - offset);
   return p ? (bufsize_t)(p - ch->data) : ch->len;
@@ -96,8 +96,8 @@ static CMARK_INLINE cmark_chunk cmark_chunk_literal(const char *data) {
   return c;
 }
 
-static CMARK_INLINE cmark_chunk cmark_chunk_dup(const cmark_chunk *ch,
-                                                bufsize_t pos, bufsize_t len) {
+static CMARK_INLINE cmark_chunk
+    cmark_chunk_dup(const cmark_chunk *ch, bufsize_t pos, bufsize_t len) {
   cmark_chunk c = {ch->data + pos, len, 0};
   return c;
 }

diff --git a/src/latex.c b/src/latex.c
@@ -142,12 +142,13 @@ static inline void outc(cmark_renderer *renderer, cmark_escaping escape,
   }
 }
 
-typedef enum { NO_LINK,
-	       URL_AUTOLINK,
-	       EMAIL_AUTOLINK,
-	       NORMAL_LINK,
-               INTERNAL_LINK
-             } link_type;
+typedef enum {
+  NO_LINK,
+  URL_AUTOLINK,
+  EMAIL_AUTOLINK,
+  NORMAL_LINK,
+  INTERNAL_LINK
+} link_type;
 
 static link_type get_link_type(cmark_node *node) {
   size_t title_len, url_len;

diff --git a/src/scanners.h b/src/scanners.h
@@ -44,7 +44,8 @@ bufsize_t _scan_dangerous_url(const unsigned char *p);
 #define scan_link_title(c, n) _scan_at(&_scan_link_title, c, n)
 #define scan_spacechars(c, n) _scan_at(&_scan_spacechars, c, n)
 #define scan_atx_heading_start(c, n) _scan_at(&_scan_atx_heading_start, c, n)
-#define scan_setext_heading_line(c, n) _scan_at(&_scan_setext_heading_line, c, n)
+#define scan_setext_heading_line(c, n)                                         \
+  _scan_at(&_scan_setext_heading_line, c, n)
 #define scan_thematic_break(c, n) _scan_at(&_scan_thematic_break, c, n)
 #define scan_open_code_fence(c, n) _scan_at(&_scan_open_code_fence, c, n)
 #define scan_close_code_fence(c, n) _scan_at(&_scan_close_code_fence, c, n)

diff --git a/src/xml.c b/src/xml.c
@@ -105,10 +105,12 @@ static int S_render_node(cmark_node *node, cmark_event_type ev_type,
     case CMARK_NODE_CUSTOM_BLOCK:
     case CMARK_NODE_CUSTOM_INLINE:
       cmark_strbuf_puts(xml, " on_enter=\"");
-      escape_xml(xml, node->as.custom.on_enter.data, node->as.custom.on_enter.len);
+      escape_xml(xml, node->as.custom.on_enter.data,
+                 node->as.custom.on_enter.len);
       cmark_strbuf_putc(xml, '"');
       cmark_strbuf_puts(xml, " on_exit=\"");
-      escape_xml(xml, node->as.custom.on_exit.data, node->as.custom.on_exit.len);
+      escape_xml(xml, node->as.custom.on_exit.data,
+                 node->as.custom.on_exit.len);
       cmark_strbuf_putc(xml, '"');
       break;
     case CMARK_NODE_LINK: