Use clang-format, llvm style, for formatting.

* Reformatted all source files.
* Added 'format' target to Makefile.
* Removed 'astyle' target.
* Updated .editorconfig.

1 files changed, 390 insertions, 427 deletions

diff --git a/src/commonmark.c b/src/commonmark.c
index 5964c60..da81623 100644
--- a/src/commonmark.c
+++ b/src/commonmark.c
@@ -20,445 +20,408 @@
 
 // Functions to convert cmark_nodes to commonmark strings.
 
-static inline void outc(cmark_renderer *renderer,
-                        cmark_escaping escape,
-                        int32_t c,
-                        unsigned char nextc)
-{
-	bool needs_escaping = false;
-	char encoded[20];
-
-	needs_escaping =
-	    escape != LITERAL &&
-	    ((escape == NORMAL &&
-	      (c == '*' || c == '_' || c == '[' || c == ']' || c == '#' ||
-	       c == '<' || c == '>' || c == '\\' || c == '`' || c == '!' ||
-	       (c == '&' && isalpha(nextc)) ||
-	       (c == '!' && nextc == '[') ||
-	       (renderer->begin_line &&
-	        (c == '-' || c == '+' || c == '=')) ||
-	       ((c == '.' || c == ')') &&
-	        isdigit(renderer->buffer->ptr[renderer->buffer->size - 1])))) ||
-	     (escape == URL &&
-	      (c == '`' || c == '<' || c == '>' || isspace(c) ||
-	       c == '\\' || c == ')' || c == '(')) ||
-	     (escape == TITLE &&
-	      (c == '`' || c == '<' || c == '>' || c == '"' ||
-	       c == '\\')));
-
-	if (needs_escaping) {
-		if (isspace(c)) {
-			// use percent encoding for spaces
-			sprintf(encoded, "%%%2x", c);
-			cmark_strbuf_puts(renderer->buffer, encoded);
-			renderer->column += 3;
-		} else {
-			cmark_render_ascii(renderer, "\\");
-			cmark_render_code_point(renderer, c);
-		}
-	} else {
-		cmark_render_code_point(renderer, c);
-	}
+static inline void outc(cmark_renderer *renderer, cmark_escaping escape,
+                        int32_t c, unsigned char nextc) {
+  bool needs_escaping = false;
+  char encoded[20];
+
+  needs_escaping =
+      escape != LITERAL &&
+      ((escape == NORMAL &&
+        (c == '*' || c == '_' || c == '[' || c == ']' || c == '#' || c == '<' ||
+         c == '>' || c == '\\' || c == '`' || c == '!' ||
+         (c == '&' && isalpha(nextc)) || (c == '!' && nextc == '[') ||
+         (renderer->begin_line && (c == '-' || c == '+' || c == '=')) ||
+         ((c == '.' || c == ')') &&
+          isdigit(renderer->buffer->ptr[renderer->buffer->size - 1])))) ||
+       (escape == URL && (c == '`' || c == '<' || c == '>' || isspace(c) ||
+                          c == '\\' || c == ')' || c == '(')) ||
+       (escape == TITLE &&
+        (c == '`' || c == '<' || c == '>' || c == '"' || c == '\\')));
+
+  if (needs_escaping) {
+    if (isspace(c)) {
+      // use percent encoding for spaces
+      sprintf(encoded, "%%%2x", c);
+      cmark_strbuf_puts(renderer->buffer, encoded);
+      renderer->column += 3;
+    } else {
+      cmark_render_ascii(renderer, "\\");
+      cmark_render_code_point(renderer, c);
+    }
+  } else {
+    cmark_render_code_point(renderer, c);
+  }
 }
 
-static int
-longest_backtick_sequence(const char *code)
-{
-	int longest = 0;
-	int current = 0;
-	size_t i = 0;
-	size_t code_len = safe_strlen(code);
-	while (i <= code_len) {
-		if (code[i] == '`') {
-			current++;
-		} else {
-			if (current > longest) {
-				longest = current;
-			}
-			current = 0;
-		}
-		i++;
-	}
-	return longest;
+static int longest_backtick_sequence(const char *code) {
+  int longest = 0;
+  int current = 0;
+  size_t i = 0;
+  size_t code_len = safe_strlen(code);
+  while (i <= code_len) {
+    if (code[i] == '`') {
+      current++;
+    } else {
+      if (current > longest) {
+        longest = current;
+      }
+      current = 0;
+    }
+    i++;
+  }
+  return longest;
 }
 
-static int
-shortest_unused_backtick_sequence(const char *code)
-{
-	int32_t used = 1;
-	int current = 0;
-	size_t i = 0;
-	size_t code_len = safe_strlen(code);
-	while (i <= code_len) {
-		if (code[i] == '`') {
-			current++;
-		} else {
-			if (current) {
-				used |= (1 << current);
-			}
-			current = 0;
-		}
-		i++;
-	}
-	// return number of first bit that is 0:
-	i = 0;
-	while (used & 1) {
-		used = used >> 1;
-		i++;
-	}
-	return i;
+static int shortest_unused_backtick_sequence(const char *code) {
+  int32_t used = 1;
+  int current = 0;
+  size_t i = 0;
+  size_t code_len = safe_strlen(code);
+  while (i <= code_len) {
+    if (code[i] == '`') {
+      current++;
+    } else {
+      if (current) {
+        used |= (1 << current);
+      }
+      current = 0;
+    }
+    i++;
+  }
+  // return number of first bit that is 0:
+  i = 0;
+  while (used & 1) {
+    used = used >> 1;
+    i++;
+  }
+  return i;
 }
 
-static bool
-is_autolink(cmark_node *node)
-{
-	cmark_chunk *title;
-	cmark_chunk *url;
-	cmark_node *link_text;
-	char *realurl;
-	int realurllen;
-
-	if (node->type != CMARK_NODE_LINK) {
-		return false;
-	}
-
-	url = &node->as.link.url;
-	if (url->len == 0 || scan_scheme(url, 0) == 0) {
-		return false;
-	}
-
-	title = &node->as.link.title;
-	// if it has a title, we can't treat it as an autolink:
-	if (title->len > 0) {
-		return false;
-	}
-
-	link_text = node->first_child;
-	cmark_consolidate_text_nodes(link_text);
-	realurl = (char*)url->data;
-	realurllen = url->len;
-	if (strncmp(realurl, "mailto:", 7) == 0) {
-		realurl += 7;
-		realurllen -= 7;
-	}
-	return (realurllen == link_text->as.literal.len &&
-	        strncmp(realurl,
-	                (char*)link_text->as.literal.data,
-	                link_text->as.literal.len) == 0);
+static bool is_autolink(cmark_node *node) {
+  cmark_chunk *title;
+  cmark_chunk *url;
+  cmark_node *link_text;
+  char *realurl;
+  int realurllen;
+
+  if (node->type != CMARK_NODE_LINK) {
+    return false;
+  }
+
+  url = &node->as.link.url;
+  if (url->len == 0 || scan_scheme(url, 0) == 0) {
+    return false;
+  }
+
+  title = &node->as.link.title;
+  // if it has a title, we can't treat it as an autolink:
+  if (title->len > 0) {
+    return false;
+  }
+
+  link_text = node->first_child;
+  cmark_consolidate_text_nodes(link_text);
+  realurl = (char *)url->data;
+  realurllen = url->len;
+  if (strncmp(realurl, "mailto:", 7) == 0) {
+    realurl += 7;
+    realurllen -= 7;
+  }
+  return (realurllen == link_text->as.literal.len &&
+          strncmp(realurl, (char *)link_text->as.literal.data,
+                  link_text->as.literal.len) == 0);
 }
 
 // if node is a block node, returns node.
 // otherwise returns first block-level node that is an ancestor of node.
-static cmark_node*
-get_containing_block(cmark_node *node)
-{
-	while (node &&
-	       (node->type < CMARK_NODE_FIRST_BLOCK ||
-	        node->type > CMARK_NODE_LAST_BLOCK)) {
-		node = node->parent;
-	}
-	return node;
+static cmark_node *get_containing_block(cmark_node *node) {
+  while (node && (node->type < CMARK_NODE_FIRST_BLOCK ||
+                  node->type > CMARK_NODE_LAST_BLOCK)) {
+    node = node->parent;
+  }
+  return node;
 }
 
-static int
-S_render_node(cmark_renderer *renderer,
-              cmark_node *node,
-              cmark_event_type ev_type,
-              int options)
-{
-	cmark_node *tmp;
-	int list_number;
-	cmark_delim_type list_delim;
-	int numticks;
-	int i;
-	bool entering = (ev_type == CMARK_EVENT_ENTER);
-	const char *info, *code, *title;
-	size_t info_len, code_len;
-	char listmarker[20];
-	char *emph_delim;
-	bufsize_t marker_width;
-
-	// Don't adjust tight list status til we've started the list.
-	// Otherwise we loose the blank line between a paragraph and
-	// a following list.
-	if (!(node->type == CMARK_NODE_ITEM && node->prev == NULL &&
-	      entering)) {
-		tmp = get_containing_block(node);
-		renderer->in_tight_list_item =
-		    (tmp->type == CMARK_NODE_ITEM &&
-		     cmark_node_get_list_tight(tmp->parent)) ||
-		    (tmp &&
-		     tmp->parent &&
-		     tmp->parent->type == CMARK_NODE_ITEM &&
-		     cmark_node_get_list_tight(tmp->parent->parent));
-	}
-
-	switch (node->type) {
-	case CMARK_NODE_DOCUMENT:
-		break;
-
-	case CMARK_NODE_BLOCK_QUOTE:
-		if (entering) {
-			LIT("> ");
-			cmark_strbuf_puts(renderer->prefix, "> ");
-		} else {
-			cmark_strbuf_truncate(renderer->prefix,
-			                      renderer->prefix->size - 2);
-			BLANKLINE();
-		}
-		break;
-
-	case CMARK_NODE_LIST:
-		if (!entering && node->next &&
-		    (node->next->type == CMARK_NODE_CODE_BLOCK ||
-		     node->next->type == CMARK_NODE_LIST)) {
-			// this ensures 2 blank lines after list,
-			// if before code block or list:
-			LIT("\n");
-		}
-		break;
-
-	case CMARK_NODE_ITEM:
-		if (cmark_node_get_list_type(node->parent) ==
-		    CMARK_BULLET_LIST) {
-			marker_width = 2;
-		} else {
-			list_number = cmark_node_get_list_start(node->parent);
-			list_delim = cmark_node_get_list_delim(node->parent);
-			tmp = node;
-			while (tmp->prev) {
-				tmp = tmp->prev;
-				list_number += 1;
-			}
-			// we ensure a width of at least 4 so
-			// we get nice transition from single digits
-			// to double
-			sprintf(listmarker,
-				"%d%s%s", list_number,
-				list_delim == CMARK_PAREN_DELIM ?
-				")" : ".",
-				list_number < 10 ? "  " : " ");
-			marker_width = safe_strlen(listmarker);
-		}
-		if (entering) {
-			if (cmark_node_get_list_type(node->parent) ==
-			    CMARK_BULLET_LIST) {
-				LIT("* ");
-				cmark_strbuf_puts(renderer->prefix, "  ");
-			} else {
-				LIT(listmarker);
-				for (i = marker_width; i--;) {
-					cmark_strbuf_putc(renderer->prefix, ' ');
-				}
-			}
-		} else {
-			cmark_strbuf_truncate(renderer->prefix,
-			                      renderer->prefix->size -
-			                      marker_width);
-			CR();
-		}
-		break;
-
-	case CMARK_NODE_HEADER:
-		if (entering) {
-			for (int i = cmark_node_get_header_level(node); i > 0; i--) {
-				LIT("#");
-			}
-			LIT(" ");
-			renderer->no_wrap = true;
-		} else {
-			renderer->no_wrap = false;
-			BLANKLINE();
-		}
-		break;
-
-	case CMARK_NODE_CODE_BLOCK:
-		BLANKLINE();
-		info = cmark_node_get_fence_info(node);
-		info_len = safe_strlen(info);
-		code = cmark_node_get_literal(node);
-		code_len = safe_strlen(code);
-		// use indented form if no info, and code doesn't
-		// begin or end with a blank line, and code isn't
-		// first thing in a list item
-		if (info_len == 0 &&
-		    (code_len > 2 &&
-		     !isspace(code[0]) &&
-		     !(isspace(code[code_len - 1]) &&
-		       isspace(code[code_len - 2]))) &&
-		    !(node->prev == NULL && node->parent &&
-		      node->parent->type == CMARK_NODE_ITEM)) {
-			LIT("    ");
-			cmark_strbuf_puts(renderer->prefix, "    ");
-			OUT(cmark_node_get_literal(node), false, LITERAL);
-			cmark_strbuf_truncate(renderer->prefix,
-			                      renderer->prefix->size - 4);
-		} else {
-			numticks = longest_backtick_sequence(code) + 1;
-			if (numticks < 3) {
-				numticks = 3;
-			}
-			for (i = 0; i < numticks; i++) {
-				LIT("`");
-			}
-			LIT(" ");
-			OUT(info, false, LITERAL);
-			CR();
-			OUT(cmark_node_get_literal(node), false, LITERAL);
-			CR();
-			for (i = 0; i < numticks; i++) {
-				LIT("`");
-			}
-		}
-		BLANKLINE();
-		break;
-
-	case CMARK_NODE_HTML:
-		BLANKLINE();
-		OUT(cmark_node_get_literal(node), false, LITERAL);
-		BLANKLINE();
-		break;
-
-	case CMARK_NODE_HRULE:
-		BLANKLINE();
-		LIT("-----");
-		BLANKLINE();
-		break;
-
-	case CMARK_NODE_PARAGRAPH:
-		if (!entering) {
-			BLANKLINE();
-		}
-		break;
-
-	case CMARK_NODE_TEXT:
-		OUT(cmark_node_get_literal(node), true, NORMAL);
-		break;
-
-	case CMARK_NODE_LINEBREAK:
-		if (!(CMARK_OPT_HARDBREAKS & options)) {
-			LIT("\\");
-		}
-		CR();
-		break;
-
-	case CMARK_NODE_SOFTBREAK:
-		if (renderer->width == 0 &&
-		    !(CMARK_OPT_HARDBREAKS & options)) {
-			CR();
-		} else {
-			OUT(" ", true, LITERAL);
-		}
-		break;
-
-	case CMARK_NODE_CODE:
-		code = cmark_node_get_literal(node);
-		code_len = safe_strlen(code);
-		numticks = shortest_unused_backtick_sequence(code);
-		for (i = 0; i < numticks; i++) {
-			LIT("`");
-		}
-		if (code_len == 0 || code[0] == '`') {
-			LIT(" ");
-		}
-		OUT(cmark_node_get_literal(node), true, LITERAL);
-		if (code_len == 0 || code[code_len - 1] == '`') {
-			LIT(" ");
-		}
-		for (i = 0; i < numticks; i++) {
-			LIT("`");
-		}
-		break;
-
-	case CMARK_NODE_INLINE_HTML:
-		OUT(cmark_node_get_literal(node), false, LITERAL);
-		break;
-
-	case CMARK_NODE_STRONG:
-		if (entering) {
-			LIT("**");
-		} else {
-			LIT("**");
-		}
-		break;
-
-	case CMARK_NODE_EMPH:
-		// If we have EMPH(EMPH(x)), we need to use *_x_*
-		// because **x** is STRONG(x):
-		if (node->parent && node->parent->type == CMARK_NODE_EMPH &&
-		    node->next == NULL && node->prev == NULL) {
-			emph_delim = "_";
-		} else {
-			emph_delim = "*";
-		}
-		if (entering) {
-			LIT(emph_delim);
-		} else {
-			LIT(emph_delim);
-		}
-		break;
-
-	case CMARK_NODE_LINK:
-		if (is_autolink(node)) {
-			if (entering) {
-				LIT("<");
-				if (strncmp(cmark_node_get_url(node),
-				            "mailto:", 7) == 0) {
-					LIT((char *)cmark_node_get_url(node) + 7);
-				} else {
-					LIT((char *)cmark_node_get_url(node));
-				}
-				LIT(">");
-				// return signal to skip contents of node...
-				return 0;
-			}
-		} else {
-			if (entering) {
-				LIT("[");
-			} else {
-				LIT("](");
-				OUT(cmark_node_get_url(node), false, URL);
-				title = cmark_node_get_title(node);
-				if (safe_strlen(title) > 0) {
-					LIT(" \"");
-					OUT(title, false, TITLE);
-					LIT("\"");
-				}
-				LIT(")");
-			}
-		}
-		break;
-
-	case CMARK_NODE_IMAGE:
-		if (entering) {
-			LIT("![");
-		} else {
-			LIT("](");
-			OUT(cmark_node_get_url(node), false, URL);
-			title = cmark_node_get_title(node);
-			if (safe_strlen(title) > 0) {
-				OUT(" \"", true, LITERAL);
-				OUT(title, false, TITLE);
-				LIT("\"");
-			}
-			LIT(")");
-		}
-		break;
-
-	default:
-		assert(false);
-		break;
-	}
-
-	return 1;
+static int S_render_node(cmark_renderer *renderer, cmark_node *node,
+                         cmark_event_type ev_type, int options) {
+  cmark_node *tmp;
+  int list_number;
+  cmark_delim_type list_delim;
+  int numticks;
+  int i;
+  bool entering = (ev_type == CMARK_EVENT_ENTER);
+  const char *info, *code, *title;
+  size_t info_len, code_len;
+  char listmarker[20];
+  char *emph_delim;
+  bufsize_t marker_width;
+
+  // Don't adjust tight list status til we've started the list.
+  // Otherwise we loose the blank line between a paragraph and
+  // a following list.
+  if (!(node->type == CMARK_NODE_ITEM && node->prev == NULL && entering)) {
+    tmp = get_containing_block(node);
+    renderer->in_tight_list_item =
+        (tmp->type == CMARK_NODE_ITEM &&
+         cmark_node_get_list_tight(tmp->parent)) ||
+        (tmp && tmp->parent && tmp->parent->type == CMARK_NODE_ITEM &&
+         cmark_node_get_list_tight(tmp->parent->parent));
+  }
+
+  switch (node->type) {
+  case CMARK_NODE_DOCUMENT:
+    break;
+
+  case CMARK_NODE_BLOCK_QUOTE:
+    if (entering) {
+      LIT("> ");
+      cmark_strbuf_puts(renderer->prefix, "> ");
+    } else {
+      cmark_strbuf_truncate(renderer->prefix, renderer->prefix->size - 2);
+      BLANKLINE();
+    }
+    break;
+
+  case CMARK_NODE_LIST:
+    if (!entering && node->next && (node->next->type == CMARK_NODE_CODE_BLOCK ||
+                                    node->next->type == CMARK_NODE_LIST)) {
+      // this ensures 2 blank lines after list,
+      // if before code block or list:
+      LIT("\n");
+    }
+    break;
+
+  case CMARK_NODE_ITEM:
+    if (cmark_node_get_list_type(node->parent) == CMARK_BULLET_LIST) {
+      marker_width = 2;
+    } else {
+      list_number = cmark_node_get_list_start(node->parent);
+      list_delim = cmark_node_get_list_delim(node->parent);
+      tmp = node;
+      while (tmp->prev) {
+        tmp = tmp->prev;
+        list_number += 1;
+      }
+      // we ensure a width of at least 4 so
+      // we get nice transition from single digits
+      // to double
+      sprintf(listmarker, "%d%s%s", list_number,
+              list_delim == CMARK_PAREN_DELIM ? ")" : ".",
+              list_number < 10 ? "  " : " ");
+      marker_width = safe_strlen(listmarker);
+    }
+    if (entering) {
+      if (cmark_node_get_list_type(node->parent) == CMARK_BULLET_LIST) {
+        LIT("* ");
+        cmark_strbuf_puts(renderer->prefix, "  ");
+      } else {
+        LIT(listmarker);
+        for (i = marker_width; i--;) {
+          cmark_strbuf_putc(renderer->prefix, ' ');
+        }
+      }
+    } else {
+      cmark_strbuf_truncate(renderer->prefix,
+                            renderer->prefix->size - marker_width);
+      CR();
+    }
+    break;
+
+  case CMARK_NODE_HEADER:
+    if (entering) {
+      for (int i = cmark_node_get_header_level(node); i > 0; i--) {
+        LIT("#");
+      }
+      LIT(" ");
+      renderer->no_wrap = true;
+    } else {
+      renderer->no_wrap = false;
+      BLANKLINE();
+    }
+    break;
+
+  case CMARK_NODE_CODE_BLOCK:
+    BLANKLINE();
+    info = cmark_node_get_fence_info(node);
+    info_len = safe_strlen(info);
+    code = cmark_node_get_literal(node);
+    code_len = safe_strlen(code);
+    // use indented form if no info, and code doesn't
+    // begin or end with a blank line, and code isn't
+    // first thing in a list item
+    if (info_len == 0 &&
+        (code_len > 2 && !isspace(code[0]) &&
+         !(isspace(code[code_len - 1]) && isspace(code[code_len - 2]))) &&
+        !(node->prev == NULL && node->parent &&
+          node->parent->type == CMARK_NODE_ITEM)) {
+      LIT("    ");
+      cmark_strbuf_puts(renderer->prefix, "    ");
+      OUT(cmark_node_get_literal(node), false, LITERAL);
+      cmark_strbuf_truncate(renderer->prefix, renderer->prefix->size - 4);
+    } else {
+      numticks = longest_backtick_sequence(code) + 1;
+      if (numticks < 3) {
+        numticks = 3;
+      }
+      for (i = 0; i < numticks; i++) {
+        LIT("`");
+      }
+      LIT(" ");
+      OUT(info, false, LITERAL);
+      CR();
+      OUT(cmark_node_get_literal(node), false, LITERAL);
+      CR();
+      for (i = 0; i < numticks; i++) {
+        LIT("`");
+      }
+    }
+    BLANKLINE();
+    break;
+
+  case CMARK_NODE_HTML:
+    BLANKLINE();
+    OUT(cmark_node_get_literal(node), false, LITERAL);
+    BLANKLINE();
+    break;
+
+  case CMARK_NODE_HRULE:
+    BLANKLINE();
+    LIT("-----");
+    BLANKLINE();
+    break;
+
+  case CMARK_NODE_PARAGRAPH:
+    if (!entering) {
+      BLANKLINE();
+    }
+    break;
+
+  case CMARK_NODE_TEXT:
+    OUT(cmark_node_get_literal(node), true, NORMAL);
+    break;
+
+  case CMARK_NODE_LINEBREAK:
+    if (!(CMARK_OPT_HARDBREAKS & options)) {
+      LIT("\\");
+    }
+    CR();
+    break;
+
+  case CMARK_NODE_SOFTBREAK:
+    if (renderer->width == 0 && !(CMARK_OPT_HARDBREAKS & options)) {
+      CR();
+    } else {
+      OUT(" ", true, LITERAL);
+    }
+    break;
+
+  case CMARK_NODE_CODE:
+    code = cmark_node_get_literal(node);
+    code_len = safe_strlen(code);
+    numticks = shortest_unused_backtick_sequence(code);
+    for (i = 0; i < numticks; i++) {
+      LIT("`");
+    }
+    if (code_len == 0 || code[0] == '`') {
+      LIT(" ");
+    }
+    OUT(cmark_node_get_literal(node), true, LITERAL);
+    if (code_len == 0 || code[code_len - 1] == '`') {
+      LIT(" ");
+    }
+    for (i = 0; i < numticks; i++) {
+      LIT("`");
+    }
+    break;
+
+  case CMARK_NODE_INLINE_HTML:
+    OUT(cmark_node_get_literal(node), false, LITERAL);
+    break;
+
+  case CMARK_NODE_STRONG:
+    if (entering) {
+      LIT("**");
+    } else {
+      LIT("**");
+    }
+    break;
+
+  case CMARK_NODE_EMPH:
+    // If we have EMPH(EMPH(x)), we need to use *_x_*
+    // because **x** is STRONG(x):
+    if (node->parent && node->parent->type == CMARK_NODE_EMPH &&
+        node->next == NULL && node->prev == NULL) {
+      emph_delim = "_";
+    } else {
+      emph_delim = "*";
+    }
+    if (entering) {
+      LIT(emph_delim);
+    } else {
+      LIT(emph_delim);
+    }
+    break;
+
+  case CMARK_NODE_LINK:
+    if (is_autolink(node)) {
+      if (entering) {
+        LIT("<");
+        if (strncmp(cmark_node_get_url(node), "mailto:", 7) == 0) {
+          LIT((char *)cmark_node_get_url(node) + 7);
+        } else {
+          LIT((char *)cmark_node_get_url(node));
+        }
+        LIT(">");
+        // return signal to skip contents of node...
+        return 0;
+      }
+    } else {
+      if (entering) {
+        LIT("[");
+      } else {
+        LIT("](");
+        OUT(cmark_node_get_url(node), false, URL);
+        title = cmark_node_get_title(node);
+        if (safe_strlen(title) > 0) {
+          LIT(" \"");
+          OUT(title, false, TITLE);
+          LIT("\"");
+        }
+        LIT(")");
+      }
+    }
+    break;
+
+  case CMARK_NODE_IMAGE:
+    if (entering) {
+      LIT("![");
+    } else {
+      LIT("](");
+      OUT(cmark_node_get_url(node), false, URL);
+      title = cmark_node_get_title(node);
+      if (safe_strlen(title) > 0) {
+        OUT(" \"", true, LITERAL);
+        OUT(title, false, TITLE);
+        LIT("\"");
+      }
+      LIT(")");
+    }
+    break;
+
+  default:
+    assert(false);
+    break;
+  }
+
+  return 1;
 }
 
-char *cmark_render_commonmark(cmark_node *root, int options, int width)
-{
-	if (options & CMARK_OPT_HARDBREAKS) {
-		// disable breaking on width, since it has
-		// a different meaning with OPT_HARDBREAKS
-		width = 0;
-	}
-	return cmark_render(root, options, width, outc, S_render_node);
+char *cmark_render_commonmark(cmark_node *root, int options, int width) {
+  if (options & CMARK_OPT_HARDBREAKS) {
+    // disable breaking on width, since it has
+    // a different meaning with OPT_HARDBREAKS
+    width = 0;
+  }
+  return cmark_render(root, options, width, outc, S_render_node);
 }