Adding trailing slash to microservice root path in traefik ingress - traefik

Question

Traefik ingress controller has been supporting traefik.frontend.rule.type: PathPrefixStrip for quite some time, which is useful when a root path of a microservice needs to be available at example.com/path/.
Here is how an example yaml with a manifest looks like:
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
name: example
annotations:
traefik.frontend.rule.type: PathPrefixStrip
spec:
rules:
- host: example.com
http:
paths:
- path: /path/
backend:
serviceName: example
servicePort: http
The problem with this approach is that it does not add a trailing slash when a client goes to example.com/path – if I understand correctly, this can only be achieved with an extra ingress rule.
More recent versions of traefik support a wider set of annotations, which suggests that the addition of a trailing slash may be declared inside just one rule.
Here is my attempt to solve this in traefik 1.7:
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
name: example
annotations:
traefik.ingress.kubernetes.io/redirect-permanent: "true"
traefik.ingress.kubernetes.io/redirect-regex: https?://example.com/path$
traefik.ingress.kubernetes.io/redirect-replacement: https://example.com/path/
traefik.ingress.kubernetes.io/request-modifier: "ReplacePathRegex: ^/path/(.*) /$1"
spec:
rules:
- host: example.com
http:
paths:
- path: /path
backend:
serviceName: example
servicePort: http
This works, but I'm not sure if the solution is the most elegant and performant. What could be simplified or improved? Is it possible to generalize the regexps to make copy-pasting easier?
Here's the goal, just to recap:
http://example.com/path → 301 to http://example.com/path/
http://example.com/path/ → example microservice, path /
http://example.com/path/abcde → example microservice, path /abcde