[ww-bugs] Bug 3718: New: parserRadioButtons.pl throws a warning, does not have correct answer as correct

[bugzilla-daemon at webwork.maa.org]

http://bugs.webwork.maa.org/show_bug.cgi?id=3718

           Summary: parserRadioButtons.pl throws a warning, does not have
                    correct answer as correct
           Product: PG
           Version: 2.12
          Platform: PC
        OS/Version: Windows
            Status: NEW
          Severity: critical
          Priority: P5
         Component: macros
        AssignedTo: dpvc at union.edu
        ReportedBy: paultpearson at gmail.com
                CC: gage at math.rochester.edu
        Web browser Chrome
           version:
    Browser version 52.0.2743.116 m
            number:


Created an attachment (id=254)
 --> (http://bugs.webwork.maa.org/attachment.cgi?id=254)
Screenshot of the warning message

Hi Davide,

parserRadioButtons.pl is not working for me on our new (as of late June / early
July 2016) WebWork 2.12 installation.  I received this error message 

Warning messages

Use of uninitialized value $value in string eq at line 314 of
[TMPL]/macros/parserRadioButtons.pl
Use of uninitialized value $value in string eq at line 314 of
[TMPL]/macros/parserRadioButtons.pl

when trying to run the very basic pg file below (both variants of this file
gave the same error message).  I also downloaded the github master version of
parserRadioButtons.pl and saved it to the course templates/macros directory and
still received the same error message.

In the file below, the correct answer is 75.  When "Check Answers" is pressed
with the "Show correct answers" button, WebWork shows the correct answer as 65
(which is incorrect).  When the correct answer (75) is submitted, it is marked
incorrect.  See image attachment for details.

Since there may be many people affected by this bug, I marked it as critical
(and urgent since the start of the semester is tomorrow for us).

Thanks!

Paul Pearson


#############################################

DOCUMENT();

loadMacros(
"PGstandard.pl",
"PGML.pl",
"parserRadioButtons.pl",
"PGcourse.pl"
);

$showPartialCorrectAnswers = 1;

TEXT(beginproblem());

$center1 = RadioButtons(['65','75','85','95'],'75');


BEGIN_PGML
a. Center: Where is the distribution of predicted high temperatures in SLO
county centered?  What is a typical value?  (What is the average?)  
[@ $center1->buttons @]*

END_PGML

ANS( $center1->cmp );

ENDDOCUMENT();

##########################################

DOCUMENT();

loadMacros(
"PGstandard.pl",
"PGML.pl",
"parserRadioButtons.pl",
"PGcourse.pl"
);

$showPartialCorrectAnswers = 1;

TEXT(beginproblem());

$center1 = RadioButtons(['65','75','85','95'],'75');


BEGIN_PGML
a. Center: Where is the distribution of predicted high temperatures in SLO
county centered?  What is a typical value?  (What is the average?)  
[_]{$center1}

END_PGML

ENDDOCUMENT();

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