re = /[a-zA-Z]+(?=\s+in\s+\[\s*[a-zA-Z-]+(?:\s*,\s*[a-zA-Z-]+)*\s*])|(?:\G(?!^)\s*,\s*|(?<=[a-zA-Z])\s+in\s+\[\s*)\K[a-zA-Z-]+(?=(?:\s*,\s*[a-zA-Z-]+)*\s*])/m
str = 'location in [chambre, cuisine, salle-de-bain, jardin]'
# Print the match result
str.scan(re) do |match|
puts match.to_s
end
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Ruby, please visit: http://ruby-doc.org/core-2.2.0/Regexp.html