[WWcvs] pg: Fixed problem with display_matrix_mm so its behaviour matches its

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

Log Message:
-----------
Fixed problem with display_matrix_mm so its behaviour matches its
documentation.  This may break problems which relied on its previous
incorrect behavior.

Modified Files:
--------------
    pg/macros:
        PGmatrixmacros.pl

Revision Data
-------------
Index: PGmatrixmacros.pl
===================================================================
RCS file: /webwork/cvs/system/pg/macros/PGmatrixmacros.pl,v
retrieving revision 1.12
retrieving revision 1.13
diff -Lmacros/PGmatrixmacros.pl -Lmacros/PGmatrixmacros.pl -u -r1.12 -r1.13
--- macros/PGmatrixmacros.pl
+++ macros/PGmatrixmacros.pl
@@ -519,8 +519,12 @@
                         if(ref($element) eq 'Fraction') {
                                 $element=  $element->print_inline();
                         }
-                        $out .= '\\mbox{'."$element".'}';
-			$out .= '}' if ($colcount == $opts{'box'}->[1] and $opts{'cnt'} == $opts{'box'}->[0]);
+						if($opts{'force_tex'}) {
+                        	$out .= "$element";
+						} else {
+                        	$out .= '\\mbox{'."$element".'}';
+						}
+						$out .= '}' if ($colcount == $opts{'box'}->[1] and $opts{'cnt'} == $opts{'box'}->[0]);
                         $out .= " &";
                 }
                 chop($out); # remove last &