Group by regex example - dot separated names

[csorvagep]

Our tests names contains some kind of grouping, the group names are separated by dots. For example the following tests are reported by catch2:

group1.subgroup1.testname1
group1.subgroup1.testname2
group1.subgroup2.testname3
group2.testname4
group2.testname5

And we would like to see something similar:

• group1
  • subgroup1
    • testname1
    • testname2
  • subgroup2
    • testname3
• group2
  • testname4
  • testname5

Is there a way to reach this or similar?
The best I got is this:

"groupByRegex": {
    "regexes": [
        "(\\w+)"
    ],
    "groupByRegex": {
        "regexes": [
            "\\w+\\.(\\w+)\\..*"
        ]
    },
    "groupUngroupedTo": "<Empty Namespace>"
}

The problem is, the final element in the tree will always contain the full name of the test.
If there would be a way to pass down only the rest of the name to the internal groupByRegex that would solve the issue and also clean up the regex pattern.

Note: Although it's catch2, I don't think that's framework dependent.

Thanks!