why commercial and top-quality forum engine disallows an "|" character in login names and username ? Other free forum engines such as phpBB3 and vBuletin have no problems with this characters. Many people want to use "|" character as clan tags separation: "cTF|Someone" and this fact alone makes that i cannot use IPB forum engine and many communities where are clans also can't.

According to ASCII Codes:

Char Dec Oct Hex
| 124 0174 0x7c

Why it isn't supported ? Can you please change this ?

I've run a clan without this character being available.

Why not just add a custom profile field for the clan tag so affiliated clans can register and still have their "identity" visible?

or edit Characters allowed in usernames and add that.
like a-z A-Z 0-9 . |

or edit Characters allowed in usernames and add that.

like a-z A-Z 0-9 . |

You can't. It's one of roughly 20 characters that IP.Board is hard-coded to reject for some reason.

oh I didn't know that, sorry.

It's not mentioned anywhere so it's not surprising you didn't know that. Have a look at /admin/sources/classes/member/memberFunctions.php around line 653 - there's a quite large array in the username clean function which causes an error during registration.

Can't answer my own thread ?