--- loncom/homework/structuretags.pm	2023/06/02 01:20:27	1.575
+++ loncom/homework/structuretags.pm	2023/06/04 13:25:21	1.576
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA 
 # definition of tags that give a structure to a document
 #
-# $Id: structuretags.pm,v 1.575 2023/06/02 01:20:27 raeburn Exp $
+# $Id: structuretags.pm,v 1.576 2023/06/04 13:25:21 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -343,7 +343,7 @@ var keypresshandled = 0;
 var postsubmit = '$postsubmit';
 
 \$(document).ready(function(){
-  if (postsubmit != 'off') {    
+  if (postsubmit != 'off') {
     \$(document).keypress(function(event){
         var keycode = (event.keyCode ? event.keyCode : event.which);
         if ((keycode == '13') && (keypresshandled == 0)) {
@@ -722,7 +722,7 @@ sub setup_rndseed {
                 $env{'form.rndseed'}=$rndseed;
             }
 	}
-        if ((($env{'request.state'} eq "construct") || ($symb eq '')) && 
+        if ((($env{'request.state'} eq "construct") || ($symb eq '')) &&
             ($Apache::lonhomework::type eq 'randomizetry')) {
             if ($numtries) {
                 if (($reqtries =~ /^\d+$/) && ($reqtries > 1)) {
@@ -1092,7 +1092,7 @@ sub initialize_storage {
 	}
 	%Apache::lonhomework::history=
 	    &Apache::lonnet::tmprestore($namespace,'',$domain,$name);
-	my ($temp)=keys(%Apache::lonhomework::history) ;
+	my ($temp)=keys(%Apache::lonhomework::history);
 	&Apache::lonxml::debug("Return message of $temp");
     } else {
 	%Apache::lonhomework::history=
@@ -1115,13 +1115,13 @@ sub initialize_storage {
         &check_correctness_changes() is called in two circumstances
         in which the results hash is to be stored permanently, for
         grading triggered by a student's submission, where feedback on
-        correctness is to be provided to the student. 
+        correctness is to be provided to the student.
 
         1. Immediately prior to storing the results hash
 
-        To handle the case where a student's submission (and award) were 
+        To handle the case where a student's submission (and award) were
         stored after history was retrieved in &initialize_storage(), e.g.,
-        if a student submitted answers in quick succession (e.g., from 
+        if a student submitted answers in quick succession (e.g., from
         multiple tabs).  &Apache::inputtags::hidealldata() is called for
         any parts with out-of-order storage (i.e., correct then incorrect,
         where awarded >= 1 when correct).
@@ -1131,12 +1131,12 @@ sub initialize_storage {
         To handle the case where lond on the student's homeserver returns
         delay:N -- where N is the number of transactions between the last
         retrieved in &initialize_storage() and the last stored immediately
-        before permanent storage of the current transaction via 
-        lond::store_handler().  &Apache::grades::makehidden() is called  
+        before permanent storage of the current transaction via
+        lond::store_handler().  &Apache::grades::makehidden() is called
         for any parts with out-of-order storage (i.e., correct then incorrect,
         where awarded >= 1 when correct).
 
-	Will call &store_aggregates() to increment totals for attempts, 
+	Will call &store_aggregates() to increment totals for attempts,
         students, and corrects, if running user has student role.
 
 =cut
@@ -1169,7 +1169,7 @@ sub finalize_storage {
                     my ($map)=&Apache::lonnet::decode_symb($symb);
                     $map = &Apache::lonnet::clutter($map);
                     if ($env{'request.lti.login'}) {
-                        ($passback,$pbscope,$pbmap,$pbsymb,$ltinum,$ltiref) = 
+                        ($passback,$pbscope,$pbmap,$pbsymb,$ltinum,$ltiref) =
                             &needs_lti_passback($courseid,$symb,$map);
                     } elsif ($env{'request.deeplink.login'}) {
                         ($passback,$pbscope,$pbmap,$pbsymb,$crsdef,$ltinum,$ltiref) =
@@ -1450,13 +1450,13 @@ sub needs_linkprot_passback {
 =item check_correctness_changes()
 
         For all parts for which current results contain a solved status
-        of "incorrect_attempted", check if there was a transaction in which  
-        solved was set to "correct_by_student" in the time since the last 
-        transaction (retrieved when &initialize_storage() was called i.e., 
+        of "incorrect_attempted", check if there was a transaction in which
+        solved was set to "correct_by_student" in the time since the last
+        transaction (retrieved when &initialize_storage() was called i.e.,
         when &start_problem() was called), unless:
         (a) questiontype parameter is set to survey or anonymous survey (+/- credit)
         (b) problemstatus is set to no or no_feedback_ever
-        If such a transaction exists, and did not occur after "reset status" 
+        If such a transaction exists, and did not occur after "reset status"
         by a user with grading privileges, then the current transaction is an
         example of an out-of-order transaction (i.e., incorrect occurring after
         correct).  Accordingly, the current transaction should be hidden.