fixed string to vec converter for info module

modules/geom/src/vec3.hh

@@ -195,6 +195,10 @@ inline Vec3 operator/(Real d, const Vec3& v)
   return nrvo;
 }
 
+// The following operator is among other things used to write vector
+// data into info files. If its format is changed, the string to
+// vector type cast in item_type_cast.hh has to be changed
+// accordingly.
 inline std::ostream& operator<<(std::ostream& os, const Vec3& v)
 {
   os << "[" << v.x << ", " << v.y << ", " << v.z << "]";

modules/info/src/item_type_cast.hh

@@ -99,7 +99,7 @@ template <> void set_new_type<IT_STRING,IT_BOOL>(EleImpl& item)
 template <> void set_new_type<IT_STRING,IT_VECTOR>(EleImpl& item)
 {
   static String num("[-+]?[0-9]*\\.?[0-9]+([eE][-+]?[0-9]+)?");
-  boost::regex expression("\\(("+num+"),("+num+"),("+num+")\\)");
+  boost::regex expression("\\[ *("+num+") *, *("+num+") *, *("+num+") *\\]");
   boost::cmatch what;
 
   if(boost::regex_match(item.GetStringRepr().c_str(), what, expression)) {