patterns.scala

object regexpPractice {
  println("src/main/scala/org/graphframes/pattern/patterns.scala")
                                                  //> src/main/scala/org/graphframes/pattern/patterns.scala
  
  val original = "[a-zA-Z0-9_]+".r                //> original  : scala.util.matching.Regex = [a-zA-Z0-9_]+
  val fix = "[a-zA-Z0-9_.:/]+".r                  //> fix  : scala.util.matching.Regex = [a-zA-Z0-9_.:/]+
  
  "http://www.google.com" match {
    case original(_*) => "match!"
    case fix(_*) => "fix match!"
    case _ => "not match"
  }                                               //> res0: String = fix match!
}

original.findAllIn(url).toList //> res1: List[String] = List(http, www, google, com)
fix.findAllIn(url).toList //> res2: List[String] = List(http://www.google.com)

https://www.scala-lang.org/api/2.12.3/scala/util/matching/Regex.html