From ac1c7235f7e45b54319c1e96728c315d22424752 Mon Sep 17 00:00:00 2001
From: Juerd Waalboer <juerd@tnx.nl>
Date: Tue, 26 Feb 2013 23:06:55 +0100
Subject: [PATCH] Prevent negative prices for products

---
 plugins/products | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/plugins/products b/plugins/products
index 72d0f40..f278f7a 100755
--- a/plugins/products
+++ b/plugins/products
@@ -21,8 +21,9 @@ sub command :Tab(edit) {
 
     for my $fields (@products) {
         next if $command ne $fields->[0];
+        next if $fields->[1] < 0;
 
-        $cart->add(undef, - $fields->[1], $fields->[2]);
+        $cart->add(undef, 0 - $fields->[1], $fields->[2]);
         return ACCEPT;
     }