re = /(?=\[*)(、)(?=.*\])/m
str = '[FL-clover、door、(天満春華)]返せ,かわり、○○で。(東方)
[sadas、sadsad、]
[sadas、sadsad、asdsad、]
\\[.*\\]
[FL-clover、door、(天満春華)]'
# 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