# [LON-CAPA-cvs] cvs: loncom /homework response.pm

albertel lon-capa-cvs-allow@mail.lon-capa.org
Fri, 10 Aug 2007 21:27:56 -0000

```albertel		Fri Aug 10 17:27:56 2007 EDT

Modified files:
/loncom/homework	response.pm
Log:
- correcting the reg expression to fill in all * needed

Index: loncom/homework/response.pm
diff -u loncom/homework/response.pm:1.174 loncom/homework/response.pm:1.175
--- loncom/homework/response.pm:1.174	Fri Aug 10 14:16:28 2007
+++ loncom/homework/response.pm	Fri Aug 10 17:27:56 2007
@@ -1,7 +1,7 @@
# The LearningOnline Network with CAPA
# various response type definitons response definition
#
-# \$Id: response.pm,v 1.174 2007/08/10 18:16:28 riegler Exp \$
+# \$Id: response.pm,v 1.175 2007/08/10 21:27:56 albertel Exp \$
#
# Copyright Michigan State University Board of Trustees
#
@@ -569,8 +569,7 @@
\$expression=~s/(\d+)(?:x|\*)10(?:\^|\*\*)([\+\-]*\d+)/\$1\&\(\$2\)/gsi;
# Fill in multiplication signs
# a b -> a*b;3 b -> 3*b;3 4 -> 3*4
-# The while-pos-construction is necessary for a b c -> a*b*c*d instead of a*b c*d
-    while(\$expression=~s/([A-Za-z0-9])\s+([A-Za-z0-9])/\$1\*\$2/gs){pos(\$expression)--}
+    \$expr=~s/([A-Za-z0-9])\s+(?=[A-Za-z0-9])/\$1\*/gs;
# )( -> )*(; ) ( -> )*(
\$expression=~s/\)\s*\(/\)\*\(/gs;
# 3a -> 3*a; 3( -> 3*(; 3 ( -> 3*(; 3A -> 3*A

```