Possible Duplicate:
Unbalanced blank lines after inline HTML comments might break formatting

In this post: Formatting Sandbox the preview shows code (stuff indented 4 spaces), while the regular page does not. Here's the text of the post (originally from a question I was editing on SO):

i wrote sending email function that only work my debug mode(debug local server) when i publishing and hosting C# code that function not work. this my email configuration function

<!-- language: lang-xml -->
                <smtp from="admin@XXXX.com">
                    <network host="smtp.XXXXX.com" port="25"
                             userName="admin@XXXXX.com" password="XXXXX" />

I discovered that if I put a blank line after the "language" comment then everything works.

It looks like this is maybe the issue reported at Unbalanced blank lines after inline HTML comments might break formatting

marked as duplicate by Dori Jun 15 '11 at 10:26

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.


While having the preview be different than the final post is a bug, the preview code is at fault.

Otherwise the result is as expected.

(1) Markdown strips out most HTML and (2) code must be indented at least 4 spaces and follow a blank line.

Since <!-- language: lang-xml --> wasn't indented, it was treated as HTML.

Since everything after it didn't follow a blank line, it was not recognized as a code block.

But the preview rendered incorrectly and didn't show that the indented HTML would be stripped.

  • 2
    The HTML comment is not supposed to be indented: meta.stackexchange.com/questions/63800/… It is a way to tell the prettifier how to colorize the code that follows it. – Gabe Mar 15 '11 at 8:08
  • Yes, but in that answer, notice that the following code has a blank line preceding it. – Awesome Poodles Mar 15 '11 at 11:19
  • I'm not arguing that a blank line shouldn't precede it; I'm arguing that if a blank line doesn't precede it, the text should still show up (possibly not as code), and the preview should look like the page. – Gabe Mar 15 '11 at 13:19
  • No, if the blank line doesn't precede it, the text -- which is XML/HTML code -- should NOT show up -- as the final post shows correctly. But, yes, the preview should look like the posted page. – Awesome Poodles Mar 15 '11 at 23:49
  • I see, you're saying that it's actually the preview that's wrong. I'm fine with that. – Gabe Mar 16 '11 at 0:24

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