re = /(?:\s|^|\(|\[)(#[0-9]+)(?:\s|$|\)|\]|\.|\,(?:\s|$))/m
str = '#1, #2, #3
#1 #2 #3 #4
(#1)(#2)(#3)
"#1234"
#1234test
testme#3'
# 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