https://gitlab.synchro.net/main/sbbs/-/issues/863#note_6258
Here's a demonstrated test failure:
```
;eval
Parameter(s): user.birthdate="12/31/1969"; user.birthdate
Result (string): 20191231
;eval
Parameter(s): user.birthdate="12/31/69"; user.birthdate
Result (string): 19691231
```
--- SBBSecho 3.23-Linux
* Origin: Vertrauen - [vert/cvs/bbs].synchro.net (1:103/705)