找长名字电压等级

extract operator and numbers from a typical product option line

Test

Put together from information in: https://github.com/docker/distribution/blob/master/reference/reference.go (see comment at the beginning of the file) and https://github.com/docker/distribution/blob/master/reference/normalize.go (see func splitDockerDomain)

match an html table suffs

only the begining though

value part of key=value key='value' key="value" value can have spaces if quoted