A tag is not visible for the plugin if start and end angle braces are not on the same line

The plugin doesn't see a tag if its start and end angle braces are not on the same line. 
E.g.:
`<a href='#'>...</a> `
is hightlighted correct, but 
```
<a
  href='#'
>...<a> 
```
is not correct for the plugin.