Example 126 confusion (autoclosing fence blocks)

8

Note that similar confusion seems to occur with HTML blocks.

If you take example 173. This example has a final empty line which according to the test is ignored.

However if you add blanks on this final line then while the dingus still ignores the final line, neither cmark nor md2html do (they include the final blank line):

> printf '<style\n  type="text/css">\n\nfoo\n ' | cmark --unsafe  
<style
  type="text/css">

foo
 
> printf '<style\n  type="text/css">\n\nfoo\n ' | md2html       
<style
  type="text/css">

foo

So I guess something need fixing, either the spec or these implementations. The spec says:

Blank lines at the beginning and end of the document are also ignored.

But first that’s ambiguous, is it one line at the beginning and one at the end or multiple lines ? And at least for the cmark reference implementation on code blocks and HTML that’s one empty (vs blank) final line that gets ignored.

> printf '```\n  \n' | cmark    
<pre><code>  
</code></pre>
> printf '```\n  \n ' | cmark
<pre><code>  
 
</code></pre>
> printf '```\n  \n \n' | cmark
<pre><code>  
 
</code></pre>
> printf '```\n  \n \n \n' | cmark
<pre><code>  
 
 
</code></pre>

(md2html behaves similarly)