Update dependencies for 1.18.0 release (#1175)

vendor/github.com/gomarkdown/markdown/html/renderer.go

@@ -28,6 +28,7 @@ const (
 	Safelink                                  // Only link to trusted protocols
 	NofollowLinks                             // Only link with rel="nofollow"
 	NoreferrerLinks                           // Only link with rel="noreferrer"
+	NoopenerLinks                             // Only link with rel="noopener"
 	HrefTargetBlank                           // Add a blank target
 	CompletePage                              // Generate a complete HTML page
 	UseXHTML                                  // Generate XHTML output instead of HTML
@@ -295,6 +296,9 @@ func appendLinkAttrs(attrs []string, flags Flags, link []byte) []string {
 	if flags&NoreferrerLinks != 0 {
 		val = append(val, "noreferrer")
 	}
+	if flags&NoopenerLinks != 0 {
+		val = append(val, "noopener")
+	}
 	if flags&HrefTargetBlank != 0 {
 		attrs = append(attrs, `target="_blank"`)
 	}
@@ -1110,7 +1114,9 @@ func (r *Renderer) writeTOC(w io.Writer, doc ast.Node) {
 				buf.WriteString("</a>")
 				return ast.GoToNext
 			}
-			nodeData.HeadingID = fmt.Sprintf("toc_%d", headingCount)
+			if nodeData.HeadingID == "" {
+				nodeData.HeadingID = fmt.Sprintf("toc_%d", headingCount)
+			}
 			if nodeData.Level == tocLevel {
 				buf.WriteString("</li>\n\n<li>")
 			} else if nodeData.Level < tocLevel {
@@ -1126,7 +1132,7 @@ func (r *Renderer) writeTOC(w io.Writer, doc ast.Node) {
 				}
 			}
 
-			fmt.Fprintf(&buf, `<a href="#toc_%d">`, headingCount)
+			fmt.Fprintf(&buf, `<a href="#%s">`, nodeData.HeadingID)
 			headingCount++
 			return ast.GoToNext
 		}

vendor/github.com/gomarkdown/markdown/parser/inline.go

@@ -326,6 +326,7 @@ func link(p *Parser, data []byte, offset int) (int, ast.Node) {
 		i = skipSpace(data, i)
 
 		linkB := i
+		brace := 0
 
 		// look for link end: ' " )
 	findlinkend:
@@ -334,7 +335,18 @@ func link(p *Parser, data []byte, offset int) (int, ast.Node) {
 			case data[i] == '\\':
 				i += 2
 
-			case data[i] == ')' || data[i] == '\'' || data[i] == '"':
+			case data[i] == '(':
+				brace++
+				i++
+
+			case data[i] == ')':
+				if brace <= 0 {
+					break findlinkend
+				}
+				brace--
+				i++
+
+			case data[i] == '\'' || data[i] == '"':
 				break findlinkend
 
 			default:
@@ -352,19 +364,21 @@ func link(p *Parser, data []byte, offset int) (int, ast.Node) {
 		if data[i] == '\'' || data[i] == '"' {
 			i++
 			titleB = i
+			titleEndCharFound := false
 
 		findtitleend:
 			for i < len(data) {
 				switch {
 				case data[i] == '\\':
-					i += 2
-
-				case data[i] == ')':
-					break findtitleend
-
-				default:
 					i++
+
+				case data[i] == data[titleB-1]: // matching title delimiter
+					titleEndCharFound = true
+
+				case titleEndCharFound && data[i] == ')':
+					break findtitleend
 				}
+				i++
 			}
 
 			if i >= len(data) {