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Diff for /loncom/homework/hint.pm between versions 1.6 and 1.55

version 1.6, 2001/01/22 19:58:09 version 1.55, 2004/08/24 15:56:13
Line 1 Line 1
   # The LearningOnline Network with CAPA 
   # implements the tags that control the hints
   #
   # $Id$
   #
   # Copyright Michigan State University Board of Trustees
   #
   # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
   #
   # LON-CAPA me&aree software; you can redistribute it and/or modify
   # it under the terms of the GNU General Public License as published by
   # the Free Software Foundation; either version 2 of the License, or
   # (at your option) any later version.
   #
   # LON-CAPA is distributed in the hope that it will be useful,
   # but WITHOUT ANY WARRANTY; without even the implied warranty of
   # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   # GNU General Public License for more details.
   #
   # You should have received a copy of the GNU General Public License
   # along with LON-CAPA; if not, write to the Free Software
   # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   #
   # /home/httpd/html/adm/gpl.txt
   #
   # http://www.lon-capa.org/
   #
   
 package Apache::hinttags;   package Apache::hinttags; 
   
 use strict;  use strict;
 use Apache::lonnet;  use Apache::lonnet();
 use capa;  use capa;
   use Apache::lonlocal;
   
 sub BEGIN {  BEGIN {
   &Apache::lonxml::register('Apache::hinttags',('hintgroup','hintpart','numericalhint'));      &Apache::lonxml::register('Apache::hinttags',('hintgroup','hintpart','numericalhint','stringhint','formulahint','optionhint','radiobuttonhint'));
 }  }
   
   
 @Apache::hint::which=();  @Apache::hint::which=();
 sub start_hintgroup {  sub start_hintgroup {
   my ($target,$token,$parstack,$parser,$safeeval,$style)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   my $skiptoend='1';      my $skiptoend='0';
   my $result;      my $result;
     
   if ($target ne 'meta' || $target ne 'grade') {      if ($target eq 'web') {
     my $id=$Apache::inputtags::part;   my $id=$Apache::inputtags::part;
     my $numtries=$Apache::lonhomework::history{"resource.$id.tries"};   my $numtries=$Apache::lonhomework::history{"resource.$id.tries"};
     if ( $numtries eq '') { $numtries = 0; }   if ( $numtries eq '') { $numtries = 0; }
     my $hinttries=&Apache::lonnet::EXT("resource.$id.hinttries");   my $hinttries=&Apache::response::get_response_param($id,"hinttries",1);
     if ( $hinttries eq '') { $hinttries = 1; }   &Apache::lonxml::debug("found :$id:$numtries:$hinttries:");
     &Apache::lonxml::debug("found :$id:$numtries:$hinttries:");   my $gradestatus=
     if ( $numtries >= $hinttries ) {      $Apache::lonhomework::history{"resource.$id.solved"};
       $skiptoend='0';    my $showoncorrect=lc(&Apache::lonxml::get_param('showoncorrect',$parstack,$safeeval));
       if ($target eq 'web') {$result='<table bgcolor="#dddddd"><tr><td>';}   &Apache::lonxml::debug("onc orrect $showoncorrect, $gradestatus");
     }   if ( ($showoncorrect ne 'yes' && $gradestatus =~ /^correct/) ||
   }       ( $numtries < $hinttries) ) {
   if ($skiptoend) {      &Apache::lonxml::debug("Grabbin all");
     &Apache::lonxml::get_all_text("/hintgroup",$$parser[$#$parser]);      &Apache::lonxml::get_all_text("/hintgroup",$parser);
   }   }
   @Apache::hint::which=();   &Apache::lonxml::startredirection;
   return $result;      } elsif ($target eq 'tex') {
    $result .= '\keephidden{';
       } elsif ($target eq 'edit') {
    $result.=&Apache::edit::tag_start($target,$token);
    $result.=&Apache::edit::select_arg('Show hint even if problem Correct:','showoncorrect',[['no',&mt('No')],['yes',&mt('Yes')]]);
    $result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
       } elsif ($target eq 'modified') {
    my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,'showoncorrect');
          if ($constructtag) {
              $result =&Apache::edit::rebuild_tag($token);
              $result.=&Apache::edit::handle_insert();
          }
       }
       @Apache::hint::which=();
       return $result;
 }  }
   
 sub end_hintgroup {  sub end_hintgroup {
   my ($target,$token,$parstack,$parser,$safeeval,$style)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   my $result;      my $result;
   
   if ($target ne 'meta' || $target ne 'grade') {      if ($target eq 'web') {
     my $id=$Apache::inputtags::part;   my $id=$Apache::inputtags::part;
     my $numtries=$Apache::lonhomework::history{"resource.$id.tries"};   my $numtries=$Apache::lonhomework::history{"resource.$id.tries"};
     if ( $numtries eq '') { $numtries = 0; }   if ( $numtries eq '') { $numtries = 0; }
     my $hinttries=&Apache::lonnet::EXT("resource.$id.hinttries");   my $hinttries=&Apache::response::get_response_param($id,"hinttries",1);
     if ( $hinttries eq '') { $hinttries = 1; }   &Apache::lonxml::debug("found :$id:$numtries:$hinttries:");
     &Apache::lonxml::debug("found :$id:$numtries:$hinttries:");   my $hinttext=&Apache::lonxml::endredirection;
     if ( $numtries >= $hinttries ) {   if ($Apache::lonhomework::type ne 'exam' &&
       if ($target eq 'web') {$result='</td></tr></table>';}      $numtries >= $hinttries && $hinttext =~/\S/) {
     }      $result='<table bgcolor="#dddddd"><tr><td>'.
   }   $hinttext.'</td></tr></table>';
   @Apache::hint::which='';   }
   return $result;      } elsif ($target eq 'edit') {
    $result.=&Apache::edit::end_table();
       } elsif ($target eq 'tex') {
    $result .= '}';
       }
       @Apache::hint::which=();
       return $result;
 }  }
   
 sub start_numericalhint {  sub start_numericalhint {
   #do everything in end, so intervening <responseparams> work      my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
       #do everything in end, so intervening <responseparams> work
       &Apache::response::start_hintresponse($parstack,$safeeval);
       my $result;
       if ($target eq 'edit') {
    $result.=&Apache::edit::tag_start($target,$token);
    $result.=&Apache::edit::text_arg('Name:','name',$token);
    $result.=&Apache::edit::text_arg('Answer:','answer',$token);
    if ($token->[1] eq 'numericalhint') {
       $result.=&Apache::edit::text_arg('Unit:','unit',$token,5).
    &Apache::loncommon::help_open_topic('Physical_Units');
       $result.=&Apache::edit::text_arg('Format:','format',$token,4).
    &Apache::loncommon::help_open_topic('Numerical_Response_Format');
    } elsif ($token->[1] eq 'stringhint') {
       $result.=&Apache::edit::select_arg('Type:','type',
       [['cs','Case Sensitive'],['ci','Case Insensitive'],
        ['mc','Case Insensitive, Any Order']],$token);
    } elsif ($token->[1] eq 'formulahint') {
       $result.=&Apache::edit::text_arg('Sample Points:','samples',$token,40);
    }
    $result.=&Apache::edit::end_row();
    $result.=&Apache::edit::start_spanning_row();
       } elsif ($target eq 'modified') {
    my $constructtag;
    if ($token->[1] eq 'numericalhint') {
       $constructtag=&Apache::edit::get_new_args($token,$parstack,
        $safeeval,'name',
        'answer','unit','format');
    } elsif ($token->[1] eq 'stringhint') {
       $constructtag=&Apache::edit::get_new_args($token,$parstack,
        $safeeval,'name','answer',
        'type');
    } elsif ($token->[1] eq 'formulahint') {
       $constructtag=&Apache::edit::get_new_args($token,$parstack,
        $safeeval,'name','answer',
        'samples');
    }
    if ($constructtag) {
       $result  = &Apache::edit::rebuild_tag($token);
       $result .= &Apache::edit::handle_insert();
    }
       } elsif ($target eq 'web') {
    &Apache::response::reset_params();
       }
       return $result;
 }  }
   
 sub end_numericalhint {  sub end_numericalhint {
   my ($target,$token,$parstack,$parser,$safeeval,$style)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   my $result;      my $result;
   if ($target ne 'meta' && $target ne 'grade') {      if ($target eq 'web') {
     my $args ='';   if (!$Apache::lonxml::default_homework_loaded) {
     $safeeval->share_from('capa',['&caparesponse_capa_check_answer']);      &Apache::lonxml::default_homework_load($safeeval);
     if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }   }
     my $name = &Apache::run::run("{$args;".'return $name}',$safeeval);   $safeeval->share_from('capa',['&caparesponse_capa_check_answer']);
     my $response = $Apache::lonhomework::history{"resource.$Apache::inputtags::part.$Apache::inputtags::response['-1'].submission"};   my $name= &Apache::lonxml::get_param('name',$parstack,$safeeval);
     &Apache::lonxml::debug("hintgroup is using $response<br>\n");   &Apache::response::setup_params('numericalhint',$safeeval);
     my $expression="&caparesponse_check_list('".$response."','".   my $partid=$Apache::inputtags::part;
       $$parstack[$#$parstack].   my $id=$Apache::inputtags::response['-1'];
  ';my $tol="'.$Apache::inputtags::params{'tol'}.'"'.   #id submissions occured under
  ';my $sig="'.$Apache::inputtags::params{'sig'}.'"'.   my $submitid=$Apache::inputtags::response['-2'];
   "');";   my $response = $Apache::lonhomework::history{
     $result = &Apache::run::run($expression,$safeeval);      "resource.$partid.$submitid.submission"};
     &Apache::lonxml::debug("$expression:result:$result:$Apache::lonxml::curdepth");   &Apache::lonxml::debug("hintgroup is using $response<br />\n");
     my ($awards) = split /:/ , $result;   my $hideunit=&Apache::response::get_response_param($partid.'_'.$submitid,'turnoffunit');
     my ($ad) = &Apache::inputtags::finalizeawards(split /,/ , $awards);   my $args_ref= \%{$safeeval->varglob('LONCAPA::CAPAresponse_args')};
     if ($ad eq 'EXACT_ANS' || $ad eq 'APPROX_ANS') { push (@Apache::hint::which,$name); }   $$args_ref{'response'}=$response;
     $result='';   #need to get all possible parms
   }   foreach my $arg ('type','tol','sig','ans_fmt','unit','calc',
   return $result;   'samples') {
       $$args_ref{$arg}=
    &Apache::lonxml::get_param($arg,$parstack,$safeeval);
    }
    foreach my $key (keys(%Apache::inputtags::params)) {
       $$args_ref{$key}=$Apache::inputtags::params{$key};
    }
    if (lc($hideunit) eq "yes") { delete($$args_ref{'unit'}); }
    if ($$tagstack[-1] eq 'formulahint') {
       $$args_ref{'type'}='fml';
    } elsif ($$tagstack[-1] eq 'numericalhint') {
       $$args_ref{'type'}='float';
    }
    my @answer=&Apache::lonxml::get_param_var('answer',$parstack,$safeeval);
    &Apache::lonxml::debug('answer is'.join(':',@answer));
    @{$safeeval->varglob('LONCAPA::CAPAresponse_answer')}=@answer;
   
    ($result,my @msgs) = &Apache::run::run("&caparesponse_check_list()",
    $safeeval);
    &Apache::lonxml::debug('msgs are'.join(':',@msgs));
    &Apache::lonxml::debug("result:$result:$Apache::lonxml::curdepth");
    my ($awards)=split(/:/,$result);
    my (@awards) = split(/,/,$awards);
    my ($ad, $msg) = &Apache::inputtags::finalizeawards(\@awards,\@msgs);
    if ($ad eq 'EXACT_ANS' || $ad eq 'APPROX_ANS') { push (@Apache::hint::which,$name); }
    $result='';
       } elsif ($target eq 'meta') {
    $result=&Apache::response::meta_package_write($token->[1]);
       } elsif ($target eq 'edit') {
    $result.='</td></tr>'.&Apache::edit::end_table;
       }
       &Apache::response::end_hintresponse();
       return $result;
   }
   
   sub start_formulahint {
       return &start_numericalhint(@_);
   }
   
   sub end_formulahint {
       return &end_numericalhint(@_);
   }
   
   sub start_stringhint {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
       #do everything in end, so intervening <responseparams> work
       &Apache::response::start_hintresponse($parstack,$safeeval);
       my $result;
       if ($target eq 'edit') {
    $result.=&Apache::edit::tag_start($target,$token);
    $result.=&Apache::edit::text_arg('Name:','name',$token);
    $result.=&Apache::edit::text_arg('Answer:','answer',$token);
    $result.=&Apache::edit::select_arg('Type:','type',
    [['cs','Case Sensitive'],['ci','Case Insensitive'],
     ['mc','Case Insensitive, Any Order'],
     ['re','Regular Expression']],$token);
    $result.=&Apache::edit::end_row();
    $result.=&Apache::edit::start_spanning_row();
       } elsif ($target eq 'modified') {
    my $constructtag;
    $constructtag=&Apache::edit::get_new_args($token,$parstack,
     $safeeval,'name','answer',
     'type');
    $result  = &Apache::edit::rebuild_tag($token);
    $result .= &Apache::edit::handle_insert();
       } elsif ($target eq 'web') {
    &Apache::response::reset_params();
       }
       return $result;
   }
   
   sub end_stringhint {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
       my $result;
       if ($target eq 'web') {
    if (!$Apache::lonxml::default_homework_loaded) {
       &Apache::lonxml::default_homework_load($safeeval);
    }
    my $answer=&Apache::lonxml::get_param('answer',$parstack,$safeeval);
    $safeeval->share_from('capa',['&caparesponse_capa_check_answer']);
    my $name= &Apache::lonxml::get_param('name',$parstack,$safeeval);
    &Apache::response::setup_params('stringhint',$safeeval);
    my $partid=$Apache::inputtags::part;
    my $id=$Apache::inputtags::response['-1'];
    #id submissions occured under
    my $submitid=$Apache::inputtags::response['-2'];
    my $response = $Apache::lonhomework::history{
       "resource.$partid.$submitid.submission"};
    &Apache::lonxml::debug("hintgroup is using $response<br />\n");
    my $args_ref= \%{$safeeval->varglob('LONCAPA::CAPAresponse_args')};
    $$args_ref{'response'}=$response;
    my $type=$$args_ref{'type'}=&Apache::lonxml::get_param('type',$parstack,$safeeval);
    my ($ad,$msg);
    if ($type eq 're' ) {
       ${$safeeval->varglob('LONCAPA::response')}=$response;
       $result = &Apache::run::run('return $LONCAPA::response=~m'.$answer,$safeeval);
       &Apache::lonxml::debug("current $response");
       &Apache::lonxml::debug("current $answer");
       $ad = ($result) ? 'APPROX_ANS' : 'INCORRECT';
    } else { 
       foreach my $key (keys(%Apache::inputtags::params)) {
    $$args_ref{$key}=$Apache::inputtags::params{$key};
       }
       &Apache::lonxml::debug('answer is'.$answer);
       @{$safeeval->varglob('LONCAPA::CAPAresponse_answer')}=($answer);
       
       ($result,my @msgs)=&Apache::run::run("&caparesponse_check_list()",
      $safeeval);
       &Apache::lonxml::debug('msgs are'.join(':',@msgs));
       &Apache::lonxml::debug("result:$result:$Apache::lonxml::curdepth");
       my ($awards)=split(/:/,$result);
       my (@awards) = split(/,/,$awards);
       ($ad, $msg) = &Apache::inputtags::finalizeawards(\@awards,\@msgs);
    }
    if ($ad eq 'EXACT_ANS' || $ad eq 'APPROX_ANS') { 
       push (@Apache::hint::which,$name);
    }
    $result='';
       } elsif ($target eq 'meta') {
    $result=&Apache::response::meta_package_write($token->[1]);
       } elsif ($target eq 'edit') {
    $result.='</td></tr>'.&Apache::edit::end_table;
       }
       &Apache::response::end_hintresponse();
       return $result;
 }  }
   
 # a part shows if it is on, if no specific parts are on, then default shows  # a part shows if it is on, if no specific parts are on, then default shows
 sub start_hintpart {  sub start_hintpart {
   my ($target,$token,$parstack,$parser,$safeeval,$style)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   
   my $show ='0';      my $show ='0';
       my $result = '';
   if ($target ne 'meta' && $target ne 'grade') {      if ($target eq 'web') {
     my $args ='';   my $on= &Apache::lonxml::get_param('on',$parstack,$safeeval);
     if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }   &Apache::lonxml::debug("hintpart sees $on and ,$#Apache::hint::which");
     my $on = &Apache::run::run("{$args;".'return $on}',$safeeval);   if ( $on eq 'default' && $#Apache::hint::which == '-1') {
     if ( $on eq 'default' && $#Apache::hint::which == '-1') {      $show=1;
     } else {   } else {
       my $which;      my $which;
       foreach $which (@Apache::hint::which) { if ($which eq $on) { $show = 1; last } }      foreach $which (@Apache::hint::which) { if ($which eq $on) { $show = 1; last } }
     }   }
     if (!$show) {   if (!$show) {
       &Apache::lonxml::get_all_text("/hintpart",$$parser[$#$parser]);      &Apache::lonxml::get_all_text("/hintpart",$parser);
     }   }
   } else {      } elsif ($target eq 'grade') {
     &Apache::lonxml::get_all_text("/hintpart",$$parser[$#$parser]);   &Apache::lonxml::get_all_text("/hintpart",$parser);
   }      } elsif ($target eq 'edit') {
   return '';   $result.= &Apache::edit::tag_start($target,$token);
    $result.= &Apache::edit::text_arg('On:','on',$token);
    $result.= &Apache::edit::end_row();
    $result.= &Apache::edit::start_spanning_row();
       } elsif ($target eq 'modified') {
    my $constructtag=&Apache::edit::get_new_args($token,$parstack,
        $safeeval,'on');
    if ($constructtag) {
       $result = &Apache::edit::rebuild_tag($token);
       $result.=&Apache::edit::handle_insert();
    }
       }
       return $result;
 }  }
   
 sub end_hintpart {  sub end_hintpart {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
       my $result;
       if ($target eq 'edit') { $result.=&Apache::edit::end_table; }
       return $result;
   }
   
   sub start_optionhint {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
       my $result;
       &Apache::response::start_hintresponse($parstack,$safeeval);
       if ($target eq 'edit') {
    $result.=&Apache::edit::tag_start($target,$token);
    $result.=&Apache::edit::text_arg('Name:','name',$token);
    $result.=&Apache::edit::text_arg('Answer:','answer',$token,40);
    $result.=&Apache::edit::text_arg('Concept:','concept',$token,50);
       } elsif ($target eq 'modified') {
    my $constructtag=&Apache::edit::get_new_args($token,$parstack,
        $safeeval,'name',
        'answer','concept');
    if ($constructtag) {
       $result  = &Apache::edit::rebuild_tag($token);
       $result .= &Apache::edit::handle_insert();
    }
       } elsif ($target eq 'meta') {
    $result=&Apache::response::meta_package_write('numericalhint');
       }
       return $result;
 }  }
   
   sub end_optionhint {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
       my $result;
       if ($target eq 'web') {
    my ($foilmatch,$conceptmatch)=(-1,-1);
    my $name= &Apache::lonxml::get_param('name',$parstack,$safeeval);
    my $partid=$Apache::inputtags::part;
    #id submissions occured under
    my $submitid=$Apache::inputtags::response['-2'];
    my $part_id="$partid.$submitid";
    my %answer;
    my $answer=&Apache::lonxml::get_param('answer',$parstack,$safeeval);
    if ($answer) {
       eval('%answer ='.$answer);
       &Apache::lonhomework::showhash(%answer);
       my $response = $Apache::lonhomework::history{
               "resource.$part_id.submission"};
       my %response=&Apache::lonnet::str2hash($response);
       &Apache::lonhomework::showhash(%response);
       foreach my $foil (keys(%answer)) {
    $foilmatch=1;
    if ($answer{$foil} ne $response{$foil}) {$foilmatch=0;last;}
       }
    }
    my %concept;
    my $constr=&Apache::lonxml::get_param('concept',$parstack,$safeeval);
    if ( $constr ) { eval('%concept ='.$constr); }
    my $response = $Apache::lonhomework::history{
    "resource.$part_id.submissiongrading"};
    my %response=&Apache::lonnet::str2hash($response);
    foreach my $concept (keys(%concept)) {
       my $compare;
       if ($concept{$concept} eq 'correct') {$compare=1}else{$compare=0}
       $conceptmatch=1;
       if (ref($Apache::hint::option{"$part_id.concepts"})) {
    foreach my $foil (@{ $Apache::hint::option{"$part_id.concept.$concept"} }) {
       &Apache::lonxml::debug("compare -$foil- -$response{$foil}-$compare-");
       if ( exists($response{$foil}) && 
    $response{$foil} ne $compare) {$conceptmatch=0;last;}
    }
       } else {
    $conceptmatch=0;
       }
       if ($conceptmatch eq '0') { last; }
    }
    if ( ($conceptmatch eq '-1' || $conceptmatch eq '1') &&
        ($foilmatch    eq '-1' || $foilmatch    eq '1') ) {
       push(@Apache::hint::which,$name);
    }
       } elsif ($target eq 'edit') { $result.=&Apache::edit::end_table; }
       if ($target eq 'edit') { $result.=&Apache::edit::end_table; }
       &Apache::response::end_hintresponse();
       return $result;
   }
   
   sub start_radiobuttonhint {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
       my $result;
       &Apache::response::start_hintresponse($parstack,$safeeval);
       if ($target eq 'edit') {
    $result.=&Apache::edit::tag_start($target,$token);
    $result.=&Apache::edit::text_arg('Name:','name',$token);
    $result.=&Apache::edit::text_arg('Answer:','answer',$token);
       } elsif ($target eq 'modified') {
    my $constructtag=&Apache::edit::get_new_args($token,$parstack,
        $safeeval,'name',
        'answer');
    if ($constructtag) {
       $result  = &Apache::edit::rebuild_tag($token);
       $result .= &Apache::edit::handle_insert();
    }
       } elsif ($target eq 'meta') {
    $result=&Apache::response::meta_package_write('numericalhint');
       }
       return $result;
   }
   
   sub end_radiobuttonhint {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
       my $result;
       if ($target eq 'web') {
    my $name= &Apache::lonxml::get_param('name',$parstack,$safeeval);
    my @answer;
    my $answer=&Apache::lonxml::get_param('answer',$parstack,$safeeval);
    eval('@answer ='.$answer);
    my $partid=$Apache::inputtags::part;
    #id submissions occured under
    my $submitid=$Apache::inputtags::response['-2'];
    my $part_id="$partid.$submitid";
    my $response = $Apache::lonhomework::history{
       "resource.$part_id.submission"};
    ($response)=&Apache::lonnet::str2hash($response);
    &Apache::lonxml::debug("response is $response");
   
    if ($answer[0] eq 'foil') {
       shift(@answer);
       foreach my $answer (@answer) {
    if ($response eq $answer) {
       push (@Apache::hint::which,$name);
       last;
    }
       }
    } elsif ($answer[0] eq 'concept') {
       shift(@answer);
       foreach my $answer (@answer) {
    if (ref($Apache::hint::radiobutton{"$part_id.concept.".$answer})) {
       my @names=@{ $Apache::hint::radiobutton{"$part_id.concept.".$answer} };
       if (grep(/^\Q$response\E$/,@names)) {
    push(@Apache::hint::which,$name);
    last;
       }
    }
       }
    }
       } elsif ($target eq 'edit') { $result.=&Apache::edit::end_table; }
       &Apache::response::end_hintresponse();
       return $result;
   }
 1;  1;
 __END__  __END__
Removed from v.1.6  
changed lines
  Added in v.1.55

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