yaml frontmatter in org mode

Question

When exporting and org file in emacs to either html or md for a jekyll-based web page, the yaml front matter gets twisted.

As suggested here, I have attempted enclosing it in an html block in the org file thus:

#+begin_html
---
layout: post 
title:  "La redistritación"
---
#+end_html

It should output this:

---
layout: post 
title:  "La redistritación"
---

Using org-html-publish-to-html, I instead get this:

<div class="html">
<p>
&#x2014;
layout: post 
title:  "La redistritación"
&#x2014;
</p>
</div>

I also attempted enclosing in a source block (as suggested here) thus:

#+begin_src yaml
---
layout: post 
title:  "La redistritación"
---
#+end_src

which comes close, but prepends empty (code) spaces and is therefore not recognized as front matter by jekyll.

(And adding exports and results specs, as suggested here, returns a Wrong type argument: stringp, nil error message.)

How should I configure export settings to get proper yaml front matter?

Answer 1

Don't see what version you are running but the solution is crazy simple. Mine didn't work at first (because i used yml not yaml) Those two file types are the same thing.

#+BEGIN_SRC yaml
#+END_SRC

Answer 2

Here is a filter to post-process the entire document body in order to expand expressions of the form {{{:ident}}} by resolving :ident against the communication channel. For example {{{:title}}} will be replaced by the document title as set by the #+title directive.

(defun my-org-body-filter (body backend info)
  (replace-regexp-in-string "{{{\\(:[^}]+\\)}}}"
                            (lambda (name)
                              (let* ((sym (intern (substring name 3 -3)))
                                     (val (plist-get info sym)))
                                (format "%s "(and val (car val)))))
                            body))
(add-to-list 'org-export-filter-body-functions #'my-org-body-filter)