Allow BBCodes and params to start with, or be entirely comprised of an underscore
Allow BBCodes and params to start with, or be entirely comprised of an underscore

brunoais/TextFormatter,s9e/TextFormatter,s9e/TextFormatter,s9e/SimpleDOM,s9e/Acl,s9e/TextFormatter,s9e/Acl,brunoais/TextFormatter,s9e/SimpleDOM,s9e/SimpleDOM,s9e/TextFormatter,brunoais/TextFormatter