YAML boolean values

yaml_boolean_values.fish

# Context: https://twitter.com/josh_cheek/status/1406730934880198664

# NOTE: If you want to run this in bash, you have tod ouble-escape the newlines being passed to `tr`

curl -sL http://yaml.org/type/bool.html |        # grab the docs on booleans
  nokogiri -e 'puts $_.css("pre.screen").text' | # extract the values they mention
  tr -d \n |                                     # remove their whitespace formatting
  tr \| \n |                                     # each BNF "or" option gets its own line
  ruby -r yaml -lne 'p [$_, YAML.load($_)]' |    # print each input value and what it parses to
  bat -l ruby                                    # syntax highlight it