Mike, thanks for help!

question77 — Sat, 12 Nov 2011 15:13:47 +0000

Note that erlang treats "\"

mikekaganski — Fri, 11 Nov 2011 18:43:15 +0000

Note that erlang treats "\" as its own escaping character. So if you need to include the "\" into the regex pattern (say, if you need "-" inside square brackets), then you need to double-escape this in ejabberd.cfg:

{access, register}
 {acl, somechars, {user_regexp, "^[0-9A-Za-z.\\-]+$"}}.
 {access, register, [{allow, somechars}, {deny, all}]}. 

(I put the dot here unescaped, as it is not a metacharacter inside square brackets, but no harm if you will escape it, too)

Also note that ejabberd.cfg is utf-8-encoded, and must not include the BOM. This is important if you use internationalized characters in it (like in your initial pattern "[а-яА-Я]"). If your editor includes BOM, or if it saves your file as ACSII, then ejabberd may not work properly. I use Cyrillic characters in my ejabberd.cfg (my users, to the contrary, almost exclusively use Cyrillic characters in their uids), and it works. Still, I don't know if this works with regex, because in utf-8, internationalized characters are multibyte, and this will work only if the string is internally converted to utf-16 and then passed to regex module, or if the regex module knows how to treat multibyte utf-8 sequences. This needs trial. Possibly you may need to use "\x{ABC}" to succeed in this case.

mikekaganski, thanks for

question77 — Fri, 11 Nov 2011 15:00:22 +0000

mikekaganski, thanks for answer!

Smth like this?

In ejabberd.cfg:

{access, register}
{acl, somechars, {user_regexp, "^[0-9A-Za-z\-]+$"}}.
{access, register, [{allow, somechars}, {deny, all}]}.

Am I right?

In those regexps on the page

mikekaganski — Fri, 11 Nov 2011 12:56:02 +0000

In those regexps on the page that you cite, you somehow forget that names usually consist of more than one character.
I would suggest something like "^[\x20-\x7F]+$" or "^[0-9A-Za-z\-]+$" (note the plus :) )

ejabberd - Comments for "Only Latin JIDs REGEXP"

Mike, thanks for help!

Note that erlang treats "\"

mikekaganski, thanks for

In those regexps on the page