More flexible path matching (such as file extensions and logical or)

Bug report

spring-cloud-version: Finchley.SR2

I has a requirement that route www.example.com/**/*.html to lb://serviceNodeJs, and route www.example.com/** to lb://serviceJava,
so I wrote the following yaml file:

spring:
  cloud:
    gateway:
      routes:
      - id: test1
        uri: lb://serviceNodeJs
        predicates:
        - Host=www.example.com
        - Path=/**/*.html
      - id: test2
        uri: lb://serviceJava
        predicates:
        - Host=www.example.com
        - Path=/**

But when I browse http://www.example.com/index.html, it is routed to lb://serviceJava,
my idea is that all the requests with the .html postfix being routed to lb://serviceNodeJs, and all the others being routed to lb://serviceJava, And I have also read the source code PathRoutePredicateFactory, I found that it use a new class PathPattern to test if it matches. If I use AntPathMatcher, it can support my requirement. so can PathPattern changed to meet this requirement?

Start by reading PathRoutePredicateFactory and the PathPattern implementation referenced in the issue, then reproduce the two route configurations against the reported URL. Define the matching behavior for the .html pattern and the fallback pattern, including whether the broader logical-or request is in scope; done means the intended routes are selected consistently.