+ Drupal 4.4 stored profile data in the serialized user->data column. Drupal 4.5 stores profile data in tables (but user->data is still available and used for other stuff, like locale or themes). The update from 4.4 to 4.5 didn't remove the old data from the user->data column properly, because there is no mechanism in user_save to do so (it did try to unset the fields, but this has no effect).
+ On registration, hook_user('insert') is invoked after saving the data column. This means that any module-specific data is put into the data field. We cannot move hook_user('insert') higher up, because before that point, we do not have a complete $user object yet.
Upload.module
- Fixing a bug caused by the PHP5 patches.
Beware: PHP4's array_merge() will silently accept objects and convert them to arrays. We should not depend on this behaviour in the future.
File.inc / file-using modules:
- Removing the constant FILE_SEPARATOR: forward slashes work fine on Windows, and it was being used incorrectly as an URL separator sometimes.
- Adding @ to mkdir and chmod to supress ugly PHP errors. They are already reported with drupal_set_message().
- Fixing default for variable 'file_directory_temp'.
- Clarifying the help tip for 'file_directory_temp' in admin > settings.
- Changing theme('image') so the automatic image size fetching can be toggled independently from attributes. Specifying attributes and autosizing are 2 different things.
- Suppressing PHP errors from getimagesize() using @. drupal_set_message() is used to report these errors already and in a much prettier way.
- #9958: Fixing broken displaying of avatars.
- Don't show the default avatar in 'edit my account' if the user has no avatar of his/her own.
- Added ability to delete avatars (without having to replace them).
* Refactored the "brains" of user_login() to user_authenticate($user, $pass) so that blogapi (and others) can authenticate users (including those using DistAuth) without all the html and drupal_goto calls
* Updates blogapi_validate_user to use user_authenticate.
* Adds missing quotes around the username in "session closed" watchdog messages from user.module (session opened has quotes, but session closed does not).
* Changed "view detals" after watchdog entries to "details".
I had some trouble adding this feature but realized that the "who's online" block is a geek think, and therefore it won't hurt to add some more geekiness. If you don't know what "offline users" means, you would not have understood "online users" in the first place. Either way, I think most people who have the block enabled, will find this an interesting addition.