--- loncom/interface/loncommon.pm	2023/11/11 23:09:23	1.1417
+++ loncom/interface/loncommon.pm	2023/11/17 17:02:20	1.1418
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # a pile of common routines
 #
-# $Id: loncommon.pm,v 1.1417 2023/11/11 23:09:23 raeburn Exp $
+# $Id: loncommon.pm,v 1.1418 2023/11/17 17:02:20 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -6475,6 +6475,59 @@ sub nocodemirror {
     return;
 }
 
+sub permitted_editors {
+    my ($is_author,$is_coauthor,$auname,$audom,%editors);
+    if ($env{'request.role'} =~ m{^au\./}) {
+        $is_author = 1;
+    } elsif ($env{'request.role'} =~ m{^(?:ca|aa)\./($match_domain)/($match_username)}) {
+        ($audom,$auname) = ($1,$2);
+        if (($audom ne '') && ($auname ne '')) {
+            if (($env{'user.domain'} eq $audom) &&
+                ($env{'user.name'} eq $auname)) {
+                $is_author = 1;
+            } else {
+                $is_coauthor = 1;
+            }
+        }
+    } elsif ($env{'request.course.id'}) {
+        if ($env{'request.editurl'} =~ m{^/priv/($match_domain)/($match_username)/}) {
+            ($audom,$auname) = ($1,$2);
+        } elsif ($env{'request.uri'} =~ m{^/priv/($match_domain)/($match_username)/}) {
+            ($audom,$auname) = ($1,$2);
+        }
+        if (($audom ne '') && ($auname ne '')) {
+            if (($env{'user.domain'} eq $audom) &&
+                ($env{'user.name'} eq $auname)) {
+                $is_author = 1;
+            } else {
+                $is_coauthor = 1;
+            }
+        }
+    }
+    if ($is_author) {
+        if (exists($env{'environment.editors'})) {
+            map { $editors{$_} = 1; } split(/,/,$env{'environment.editors'});
+        } else {
+            %editors = ( edit => 1,
+                         xml => 1,
+                       );
+        }
+    } elsif ($is_coauthor) {
+        if (exists($env{"environment.internal.editors./$audom/$auname"})) {
+            map { $editors{$_} = 1; } split(/,/,$env{"environment.internal.editors./$audom/$auname"});
+        } else {
+            %editors = ( edit => 1,
+                         xml => 1,
+                       );
+        }
+    } else {
+        %editors = ( edit => 1,
+                     xml => 1,
+                   );
+    }
+    return %editors;
+}
+
 ###############################################
 ###############################################
 
@@ -17735,6 +17788,17 @@ sub init_user_environment {
                                                       \%userenv,\%domdef,\%is_adv);
             }
 
+            if ((ref($userroles) eq 'HASH') && ($userroles->{'user.author'}) &&
+                (exists($userroles->{"user.role.au./$domain/"}))) {
+                if ($userenv{'authoreditors'}) {
+                    $userenv{'editors'} = $userenv{'authoreditors'};
+                } elsif ($domdef{'editors'} ne '') {
+                    $userenv{'editors'} = $domdef{'editors'};
+                } else {
+                    $userenv{'editors'} = 'edit,xml';
+                }
+            }
+
             $userenv{'canrequest.author'} =
                 &Apache::lonnet::usertools_access($username,$domain,'requestauthor',
                                                   'reload','requestauthor',