[WWcvs] pg: Updated ans_array and TeX methods so that Matrix arrays don't have an extra blank line at the bottom.

[dpvc v. a. <we...@ma...>]

Log Message:
-----------
Updated ans_array and TeX methods so that Matrix arrays don't have an
extra blank line at the bottom.  (There was an extra \cr that
shouldn't have been there.)

Modified Files:
--------------
    pg/lib/Value:
        AnswerChecker.pm
        Matrix.pm

Revision Data
-------------
Index: AnswerChecker.pm
===================================================================
RCS file: /webwork/cvs/system/pg/lib/Value/AnswerChecker.pm,v
retrieving revision 1.122
retrieving revision 1.123
diff -Llib/Value/AnswerChecker.pm -Llib/Value/AnswerChecker.pm -u -r1.122 -r1.123
--- lib/Value/AnswerChecker.pm
+++ lib/Value/AnswerChecker.pm
@@ -415,12 +415,13 @@
   $self->{format_options} = [%options] unless $self->{format_options};
   my ($open,$close,$sep) = ($options{open},$options{close},$options{sep});
   my ($rows,$cols) = (scalar(@{$array}),scalar(@{$array->[0]}));
-  my $tex = "";
+  my $tex = ""; my @rows = ();
   $open = '\\'.$open if $open =~ m/[{}]/; $close = '\\'.$close if $close =~ m/[{}]/;
   $tex .= '\(\left'.$open;
   $tex .= '\setlength{\arraycolsep}{2pt}', $sep = '\,'.$sep if $sep;
   $tex .= '\begin{array}{'.('c'x$cols).'}';
-  foreach my $i (0..$rows-1) {$tex .= join($sep.'&',@{$array->[$i]}).'\cr'."\n"}
+  foreach my $i (0..$rows-1) {push(@rows,join($sep.'&',@{$array->[$i]}))}
+  $tex .= join('\cr'."\n",@rows);
   $tex .= '\end{array}\right'.$close.'\)';
   return $tex;
 }
Index: Matrix.pm
===================================================================
RCS file: /webwork/cvs/system/pg/lib/Value/Matrix.pm,v
retrieving revision 1.36
retrieving revision 1.37
diff -Llib/Value/Matrix.pm -Llib/Value/Matrix.pm -u -r1.36 -r1.37
--- lib/Value/Matrix.pm
+++ lib/Value/Matrix.pm
@@ -396,6 +396,7 @@
       $d = scalar(@entries); @entries = ();
     }
   }
+  $TeX =~ s/\\cr\n$/\n/;
   return '\left'.$open.'\begin{array}{'.('c'x$d).'}'."\n".$TeX.'\end{array}\right'.$close;
 }