--- bencode.cpp.orig
+++ bencode.cpp
@@ -258,7 +258,8 @@
     n -= r; 
     if( 'e' == *pb ) break;
     if( pathname >= endmax ) return 0;
-    *pathname++ = PATH_SP;
+    if (q)
+      *pathname++ = PATH_SP;
   }
   *pathname = '\0';
   return (pb - b + 1);