re = /\[\[([^][S]++(?:S(?!PACE)|[^][S]+)*+)SPACE([^][]++)\]\]/m
str = '.. [[ ..text(not to cut).. [[wordoneSPACE**wordtwo**]] ..moretext..
..text.. [[wordoneSPACE**wordtwo**]] ..moretext..'
# 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