Validate a regular expression string against what ECMA-262 can actually do.

ActiveRecord::JSONValidator makes it easy to validate JSON attributes with a JSON schema.

A liquid tag for Jekyll to indicate the last time a file was modified.

This is a custom Markdown processor for Jekyll 2.0 and above. It allows you to use GitHub's HTML::Pipeline in your Jekyll projects.

A Ruby library that is the core module of the Qiita-specified markdown processor.

Easily generate Markdown files from your JSON schema.

Pass in a string and turn all math equations into itex equations. Or, pass in a block manipulate multiple matches.