fixing minor typo, need space after the operators

diff --git a/C4/Search.pm b/C4/Search.pm
index 03edac1..839d231 100755 (executable)
--- a/C4/Search.pm
+++ b/C4/Search.pm
@@ -558,7 +558,7 @@ sub buildQuery {
             my $weight_fields = C4::Context->parameters("WeightFields") || 0;
 
             if ( $operands[$i] ) {
-                       $operand =~ s/^(and|or|not)//i;
+                       $operand =~ s/^(and |or |not )//i;
 
 # STEMMING FIXME: need to refine the field weighting so stemmed operands don't disrupt the query ranking
                 if ($stemming) {