27 | | 4: use `username_char_blacklist = : []` - note the blank in-between |
| 27 | * 1: plan: use REGEXP, see #5295 for existing patch, that is especially lacking a useful error message (similar to a conclusion for the analog enhancement request for email validation in #8076) |
| 28 | * 2: plan: use REGEXP combined with 1 |
| 29 | * 3: plan: use REGEXP combined with 1 + 2 |
| 30 | * 4: solved: use `username_char_blacklist = : []` - note the blank in-between |
| 31 | * 5: plan: best to approach with a blacklist of character sequences, each on a line, read from a dedicated wiki page |
| 32 | * 6: ''more discussion required'': not easily done by blacklisting or similar code, maybe moderation (#843) is the best approach here, but that would largely obsolete the other points and shift all the burden towards moderators, what might or might not be acceptable |
| 33 | * 7: plan: extend existing checks towards being optionally case-less |