Original:
/ax/disks/xyz.prdenv.1/tool_utils/asda/15.2.0.5/asda.csh
Candidate regex:
/ax/disks/xyz.prdenv.1/tool_utils/(?^ux:([^/]+?))/(?^ux:([^/]+?))/(?^u:.*)
        group: asda
        version: 15.2.0.5

Original:
/tmp_log/site/disks/sad/tool_utr/zensxi/12.01.001a/log/script.pl
Candidate regex:
/tmp_log/site/disks/sad/tool_utr/(?^ux:([^/]+?))/(?^ux:([^/]+?))/(?^u:.*)
        group: zensxi
        version: 12.01.001a

Original:
/foo/bar/867.5309jenny/blonk.el
Candidate regex:
/foo/(?^ux:([^/]+?))/(?^ux:([^/]+?))/(?^u:.*)
        group: bar
        version: 867.5309jenny

No candidate; orig:
/I/reject/your/reality/and/substitute/my/own