If the system preference OPACNoResultsFound is enabled, all occurrences of the string {QUERY_KW} should be replaced with the query string if the query returns no results. In opac/opac-search.pl, the regular expression that we're using to remove the keywords 'and' and 'or' isn't properly grouped: (my $query_kw=$query_desc)=~s/ and|or / /g; will replace ' and' or 'or '; this should be (my $query_kw=$query_desc)=~s/ (and|or) / /g; To reproduce: Put "{QUERY_KW}" into OPACNoResultsFound Then do an opac search for soy andina or tractor trailer as long as neither of these is actually found, OPACNoResultsFound will show soy ina or tract trailer
We should probably do a case insensitive search: (my $query_kw=$query_desc)=~s/ (and|or) / /gi;