From a645d1b0058cd4a02d88d5657ed915fc6e88b1a7 Mon Sep 17 00:00:00 2001
From: Dirk Koopman <djk@tobit.co.uk>
Date: Sun, 26 Apr 2020 14:02:48 +0100
Subject: [PATCH] fix DXUtil::localdata ?perl bug?

---
 perl/DXUtil.pm | 6 +++---
 perl/Prefix.pm | 2 ++
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/perl/DXUtil.pm b/perl/DXUtil.pm
index b669b3b3..8bb9b956 100644
--- a/perl/DXUtil.pm
+++ b/perl/DXUtil.pm
@@ -477,10 +477,10 @@ sub localdata
 	
 	if (-e "$main::local_data") {
 		$tfn = "$main::data/$ifn";
-		if (-e $tfn && -e $ofn) {
+		if ((-e $tfn) && (-e $ofn)) {
 			$ofn = $tfn if -M $ofn < -M $tfn;
-		} elsif (-e tfn) {
-			$ofn = $tfn;
+		} else {
+			$ofn = $tfn if -e $tfn;
 		}
 	}
 
diff --git a/perl/Prefix.pm b/perl/Prefix.pm
index fd361eba..1e74d63d 100644
--- a/perl/Prefix.pm
+++ b/perl/Prefix.pm
@@ -73,6 +73,8 @@ sub load
 	eval {$db = tie(%pre, "DB_File", undef, O_RDWR|O_CREAT, 0664, $DB_BTREE);};
 	my $out = "$@($!)" if !$db || $@ ;
 	my $fn = localdata("prefix_data.pl");
+	die "Prefix.pm: cannot find $fn, have you run /spider/perl/create_prefix.pl?" unless -e $fn;
+	
 	eval {do $fn if !$out; };
 	$out .= $@ if $@;
 	$lru = LRU->newbase('Prefix', $lrusize);
-- 
2.43.0