Aside: Right now I’m a train with spotty Wifi. Hence, lots of time for noodling rather than actual productivity.

If you like that Jekyll as much as I do, chances are you’ve got lots and lots of wonderful Markdown files loaded with YAML Front Matter. I use Jekyll for everything, lo, even this very post! Let’s get TextMate’s Markdown Language Grammer to properly highlight the YAML up top.

Crack open the Bundle Editor (Cmd + Opt + Ctrl + B) and select the Markdown Language Grammer. In TextMate 2, this is in Markdown > Language Grammers > Markdown. You’ll need to add two bits.

In the block, er, block, add { include = '#yaml_front_matter'; }, to the patterns:

block = {
  patterns = (
    { include = '#yaml_front_matter'; },
    { include = '#separator'; },
    { include = '#heading'; },
    ...
  );

Then add the following pattern for yaml_front_matter under the block repository. I just added it after separator pattern.

separator = {
  match = '(^|\G)[ ]{,3}([-*_])([ ]{,2}\2){2,}[ \t]*$\n?';
  name = 'meta.separator.markdown';
};
# add this next bit
yaml_front_matter = {
  patterns = (
    { begin = '\G---';
      end = '^---';
      name = 'source.yaml.embedded.markdown';
      patterns = ( { include = 'source.yaml'; } );
    },
  );
};

Boom. Now my Jekyll Markdown files look niiiiiiiiiice.