How to use regex in extension in filter?

Help & Support
1

Enabled regex and would like to filter all files with extension .r with digits, so .r00 .r01 etc.
Started with .r
However, to make sure it will involve files with .r00 .r01.. I tried .r\d\d but that did not work.

I'll select / delete the files selecting .r00 .r01
but out of curiosity, does not work on extensions?

Thanks.

2

Works with the dot removed.

3

.*\.r\d\d is the regex for matching anything ending in .r00 through .r99

4

Ah yes, Leo, of course, ahum...
Thanks a lot!