my +1 to implement "regex utf-8" requirement - optional in 2.4 and mandatory in 2.5

I suppose it is already too late to change the requirements, I suppose the major unicode regex has to wait till 2.5, sorry...

Petr, should we be backporting MDL-19071 to 22_STABLE? As far as 2.4 can upgrade from 2.2 and 2.3 I think it would be great to have that test in 2.2 too... any drawback?

2.3/2.4 sort of works, the regex is not used much during upgrade, I suppose it is enough to warn them only.

yesyes, what I say is that people upgrading from 2.2 to 2.3 or 2.4 does not see the warning in advance (admin->server->environment), because MDL-19071 was not backported to 2.2. So they only discover the buggy regexp once they start the upgrade.

But that regex problem affects them already in 2.2.x or earlier versions and all other PHP software that uses utf-8 encoding. The warning does not stop you from upgrading to 2.3/2.4 and the upgrade is not going to fail.

Oki, so they don't "discover" the problem until they try to upgrade to 2.3/2.4. Oki, I can live with that (still think it's better to show them the problem @ 2.2 admin page but...)

Integrating... thanks!

(also note it's futile to put a different xml to 2.2 users because they will be downloading the master version from download.moodle.org sooner or later. I hope that won't break and the regexp test is simply skipped).

ok, makes sense, anything unknown in environment.xml should be skipped, if not it is a separate bug.

Integrated (22, 23 and master), thanks!

Test passed. Although please note that the settings between 2.2 and (2.3 | 2.4) are different as the hash extension is required.

Many thanks for the hard work.

These changes have been spread upstream and are already available in the git and cvs repositories.

Ciao