Index: lib.php
===================================================================
RCS file: /cvsroot/moodle/moodle/mod/wiki/lib.php,v
retrieving revision 1.53.2.5
diff -r1.53.2.5 lib.php
1029c1029
<             $can_edit = (($user->id == $wiki_entry->userid) or
---
>             $can_edit = ( (($user->id == $wiki_entry->userid) && wiki_is_student($wiki, $user->id)) or
1038c1038
<                 $can_edit = groups_is_member($wiki_entry->groupid, $user->id);
---
>                 $can_edit = wiki_is_student($wiki, $user->id) or wiki_is_teacher($wiki, $user->id) && groups_is_member($wiki_entry->groupid, $user->id);