diff --git a/_test/extra.txt b/_test/extra.txt
index 748a4ef..3cebcb9 100644
--- a/_test/extra.txt
+++ b/_test/extra.txt
@@ -671,3 +671,16 @@ This line will be displayed.
 </li>
 </ul>
 //= = = = = = = = = = = = = = = = = = = = = = = =//
+
+
+52: windows-style newline and HTMLs
+    OPTIONS: {"enableEscape": true}
+//- - - - - - - - -//
+<a \r\nhref='link'>link</a>
+
+<video autoplay muted loop>\r\n<source src=\"https://example.com/example.mp4\" type=\"video/mp4\">\r\nYour browser does not support the video tag.\r\n</video>
+//- - - - - - - - -//
+<p><a \r\nhref='link'>link</a></p>
+<video autoplay muted loop>\r\n<source src=\"https://example.com/example.mp4\" type=\"video/mp4\">\r\nYour browser does not support the video tag.\r\n</video>
+//= = = = = = = = = = = = = = = = = = = = = = = =//
+
diff --git a/parser/html_block.go b/parser/html_block.go
index 531d2fb..e6f5a3f 100644
--- a/parser/html_block.go
+++ b/parser/html_block.go
@@ -76,7 +76,7 @@ var allowedBlockTags = map[string]bool{
 	"ul":         true,
 }
 
-var htmlBlockType1OpenRegexp = regexp.MustCompile(`(?i)^[ ]{0,3}<(script|pre|style|textarea)(?:\s.*|>.*|/>.*|)\n?$`)
+var htmlBlockType1OpenRegexp = regexp.MustCompile(`(?i)^[ ]{0,3}<(script|pre|style|textarea)(?:\s.*|>.*|/>.*|)(?:\r\n|\n)?$`)
 var htmlBlockType1CloseRegexp = regexp.MustCompile(`(?i)^.*</(?:script|pre|style|textarea)>.*`)
 
 var htmlBlockType2OpenRegexp = regexp.MustCompile(`^[ ]{0,3}<!\-\-`)
@@ -85,15 +85,15 @@ var htmlBlockType2Close = []byte{'-', '-', '>'}
 var htmlBlockType3OpenRegexp = regexp.MustCompile(`^[ ]{0,3}<\?`)
 var htmlBlockType3Close = []byte{'?', '>'}
 
-var htmlBlockType4OpenRegexp = regexp.MustCompile(`^[ ]{0,3}<![A-Z]+.*\n?$`)
+var htmlBlockType4OpenRegexp = regexp.MustCompile(`^[ ]{0,3}<![A-Z]+.*(?:\r\n|\n)?$`)
 var htmlBlockType4Close = []byte{'>'}
 
 var htmlBlockType5OpenRegexp = regexp.MustCompile(`^[ ]{0,3}<\!\[CDATA\[`)
 var htmlBlockType5Close = []byte{']', ']', '>'}
 
-var htmlBlockType6Regexp = regexp.MustCompile(`^[ ]{0,3}<(?:/[ ]*)?([a-zA-Z]+[a-zA-Z0-9\-]*)(?:[ ].*|>.*|/>.*|)\n?$`)
+var htmlBlockType6Regexp = regexp.MustCompile(`^[ ]{0,3}<(?:/[ ]*)?([a-zA-Z]+[a-zA-Z0-9\-]*)(?:[ ].*|>.*|/>.*|)(?:\r\n|\n)?$`)
 
-var htmlBlockType7Regexp = regexp.MustCompile(`^[ ]{0,3}<(/[ ]*)?([a-zA-Z]+[a-zA-Z0-9\-]*)(` + attributePattern + `*)[ ]*(?:>|/>)[ ]*\n?$`)
+var htmlBlockType7Regexp = regexp.MustCompile(`^[ ]{0,3}<(/[ ]*)?([a-zA-Z]+[a-zA-Z0-9\-]*)(` + attributePattern + `*)[ ]*(?:>|/>)[ ]*(?:\r\n|\n)?$`)
 
 type htmlBlockParser struct {
 }
diff --git a/parser/raw_html.go b/parser/raw_html.go
index 43bbab7..1fb6c97 100644
--- a/parser/raw_html.go
+++ b/parser/raw_html.go
@@ -49,7 +49,7 @@ func (s *rawHTMLParser) Parse(parent ast.Node, block text.Reader, pc Context) as
 
 var tagnamePattern = `([A-Za-z][A-Za-z0-9-]*)`
 
-var attributePattern = `(?:[\n \t]+[a-zA-Z_:][a-zA-Z0-9:._-]*(?:[\n \t]*=[\n \t]*(?:[^\"'=<>` + "`" + `\x00-\x20]+|'[^']*'|"[^"]*"))?)`
+var attributePattern = `(?:[\r\n \t]+[a-zA-Z_:][a-zA-Z0-9:._-]*(?:[\r\n \t]*=[\r\n \t]*(?:[^\"'=<>` + "`" + `\x00-\x20]+|'[^']*'|"[^"]*"))?)`
 var openTagRegexp = regexp.MustCompile("^<" + tagnamePattern + attributePattern + `*[ \t]*/?>`)
 var closeTagRegexp = regexp.MustCompile("^</" + tagnamePattern + `\s*>`)
 var commentRegexp = regexp.MustCompile(`^<!---->|<!--(?:-?[^>-])(?:-?[^-])*-->`)