Be more verbose in error messages

diff --git a/tweeper.php b/tweeper.php
index 4050100..58c1642 100755 (executable)
--- a/tweeper.php
+++ b/tweeper.php
@@ -93,11 +93,11 @@ if (isset($_GET['src_url'])) {
 
 $url = parse_url($src_url);
 if (FALSE === $url || empty($url["host"]))
-  die("Invalid url\n");
+  die("Invalid url: $url\n");
 
 $stylesheet = "rss_converter_" . $url["host"] . ".xsl";
 if (FALSE === file_exists($stylesheet))
-  die("Unsupported host\n");
+  die("Conversion to RSS not supported: {$url["host"]}\n");
 
 $tweeper = new Tweeper($stylesheet);
 echo $tweeper->tweep($src_url);