YAML front matter how to make it work?

[fkgruber]

Hi, Is there a specific orgmode configuration to get the yaml working? I'm using

+BEGIN_EXPORT yaml

title: test output: html_document author: me

+END_EXPORT

and it just get ignored.

So far I've been using

+begin_export md instead and adding the --- by hand.

[chasberry]

Are you using the latest commit in the org-9-plus branch?

It is 04abe205a918a5c2246c56180024a8a17237ef02

When I run your example with C-c C-e r M I get

---
# YAML header created by ox-ravel
title: test
output: html_document
author: me
author: Charles Berry
---

in the * ravel-markdown Output * buffer.

If rmd-yaml is 'footer (by default) any non-nil values of title, author, and date are added at the end of the YAML block (and override any previously defined),

Adding #+OPTIONS: author:nil or #+OPTIONS: rmd_yaml:nil gives a similar result, but without the last author: Charles Berry line.

FWIW, I would set up my *.org file like this:

#+AUTHOR: me
#+TITLE: test

#+BEGIN_EXPORT yaml
output: html_document
#+END_EXPORT

with the result being

---
# YAML header created by ox-ravel
output: html_document
title: test
author: me
---

[fkgruber]

There most be a yaml related configuration somewhere. I'm using Org mode version 9.3.1 (9.3.1-elpaplus @ /Users/fred/.emacs.d/elpa/org-plus-contrib-20191230/)

created an orgfile having:

#+AUTHOR: me
#+TITLE: test

#+BEGIN_EXPORT yaml
output: html_document
#+END_EXPORT
** Section 1
 #+begin_src R
head(mtcars)
#+end_src

C-e r M gives me:

# Table of Contents

1.  [Section 1](#orgad11846)

<a id="orgad11846"></a>

# Section 1

```{r   }
head(mtcars) 

[chasberry]

Please update ox-ravel.el Older versions do not support YAML export blocks.

Be sure you have the 'md backend loaded.

Verify that you have succeeded in updating ox-ravel.el and loaded it by typing

C-h f org-ravel--yaml-header RET

If you get [No match] or any other error message then you did not succeed in updating ox-ravel.

If you get a docstring, then you should be able to process YAML export blocks.

[fkgruber]

Thanks that worked

[chasberry]

Great!