--- loncom/interface/lonnavdisplay.pm	2025/05/26 19:55:09	1.47
+++ loncom/interface/lonnavdisplay.pm	2025/05/27 23:35:38	1.48
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Navigate Maps Display Handler
 #
-# $Id: lonnavdisplay.pm,v 1.47 2025/05/26 19:55:09 raeburn Exp $
+# $Id: lonnavdisplay.pm,v 1.48 2025/05/27 23:35:38 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -373,29 +373,60 @@ ENDCLOSE
                         push(@names,&LONCAPA::unescape($name));
                     }
                 }
+                my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
+                my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
+                my $has_supp = &Apache::lonnet::has_unhidden_suppfiles($cnum,$cdom);
                 if ($linkprot) {
                     if ($currmatch) {
-                        $noresmsg = &mt('No main content available when accessed using the link you followed from [_1].',
-                                        $currmatch);
-                        if ($othermatches) {
-                            $noresmsg = '<br />'.
-                                        &mt('Main content may be available by following a different link from [_1].',
+                        if ($has_supp) {
+                            $noresmsg = &mt('No main content available when accessed using the link you followed from [_1].',
+                                            $currmatch);
+                        } else {
+                            $noresmsg = &mt('No content available when accessed using the link you followed from [_1].',
                                             $currmatch);
                         }
+                        if ($othermatches) {
+                            $noresmsg = '<br />';
+                            if ($has_supp) {
+                                $noresmsg .= &mt('Main content may be available by following a different link from [_1].',
+                                                 $currmatch);
+                            } else {
+                                $noresmsg .= &mt('Content may be available by following a different link from [_1].',
+                                                 $currmatch); 
+                            }
+                        }
                     } else {
-                        $noresmsg = &mt('No main content available using the link you followed.');
+                        if ($has_supp) {
+                            $noresmsg = &mt('No main content available using the link you followed.');
+                        } else {
+                            $noresmsg = &mt('No content available using the link you followed.');
+                        }
                     }
                 } elsif (@names > 0) {
-                    $noresmsg = &mt('No main content available from direct login to this course.');
+                    if ($has_supp) {
+                        $noresmsg = &mt('No main content available from direct login to this course.');
+                    } else {
+                        $noresmsg = &mt('No content available from direct login to this course.');
+                    }
                 }
                 if (@names == 1) {
-                    $noresmsg .= '<br />'.
-                                 &mt('Main content is likely available by following links from [_1]',
-                                     $names[0]);
+                    $noresmsg .= '<br />';
+                    if ($has_supp) {
+                        $noresmsg .= &mt('Main content is likely available by following links from [_1]',
+                                         $names[0]);
+                    } else {
+                        $noresmsg .= &mt('Content is likely available by following links from [_1]',
+                                         $names[0]);
+                    }
                 } elsif (@names > 1) {
-                    $noresmsg .= '<br />'.
-                                 &mt('Main content is likely available by following links from the following: [_1]',
-                                     join(', ',@names));
+                    $noresmsg .= '<br />';
+                    if ($has_supp) {
+                        $noresmsg .= &mt('Main content is likely available by following links from the following: [_1]',
+                                         join(', ',@names));
+                    } else {
+                        $noresmsg .= &mt('Content is likely available by following links from the following: [_1]',
+                                         join(', ',@names));
+                    }
                 }
             }
         }