diff --git a/modules/markup/html.go b/modules/markup/html.go
index 80b19ba35f213..6b5a8e32d4ef4 100644
--- a/modules/markup/html.go
+++ b/modules/markup/html.go
@@ -305,18 +305,15 @@ func postProcess(ctx *RenderContext, procs []processor, input io.Reader, output
return err
}
- res := bytes.NewBuffer(make([]byte, 0, len(rawHTML)+50))
- // prepend ""
- _, _ = res.WriteString("")
-
- // Strip out nuls - they're always invalid
- _, _ = res.Write(tagCleaner.ReplaceAll([]byte(nulCleaner.Replace(string(rawHTML))), []byte("<$1")))
-
- // close the tags
- _, _ = res.WriteString("")
-
// parse the HTML
- node, err := html.Parse(res)
+ node, err := html.Parse(io.MultiReader(
+ // prepend ""
+ strings.NewReader(""),
+ // Strip out nuls - they're always invalid
+ bytes.NewReader(tagCleaner.ReplaceAll([]byte(nulCleaner.Replace(string(rawHTML))), []byte("<$1"))),
+ // close the tags
+ strings.NewReader(""),
+ ))
if err != nil {
return &postProcessError{"invalid HTML", err}
}