Fix the perlpod a bit, add VERSION/IRSSI, fix bad regex handling

perl/irssi/scrolling.pl

@@ -10,8 +10,14 @@ =head1 Scrolling Script
 
 This script adds a few enhancements to irssi scrollback.
 
+=head2 Usage
+
+Install into irssi script directory, and run /run scrolling. Then see below for commands and settings.
+
 =head2 Commands
 
+=over
+
 =item /scrollback search
 
 Syntax: /scrollback search [-forward] [-rx] <item>
@@ -22,10 +28,14 @@ =head2 Commands
 
 The -rx switch causes <rx> to be treated as a regular expression.
 
+=back
+
 =head2 Settings
 
 Several settings are added under the 'scrolling' header:
 
+=over
+
 =item auto_scrolldown
 
 Boolean setting. If set, then the window is scrolled to the bottom when you send a line. Defaults to off.
@@ -48,8 +58,19 @@ =head2 Settings
 above settings. If turned on, commands are affected, with the exception of the /scrollback command (so that you can
 say '/scrollback end'). Note that in this case, /scrollback must be typed out: aliases will not work.
 
+=back
+
 =cut
 
+our $VERSION = 1;
+
+our %IRSSI = (
+	author => qw(aquanight),
+	license => 'public domain',
+	description => "Enhances irssi scrollback",
+	name => 'scrolling'
+);
+
 sub sig_send_cmd($$$)
 {
 	my ($args, $server, $witem) = @_;
@@ -120,8 +141,9 @@ ($$$)
 		};
 		if ($@)
 		{
-			$@ =~ s/ at .* line \d+$//;
-			Irssi::print("Error in regular expression: $@");
+			$@ =~ s/ at .* line \d+\.$//;
+			Irssi::print("Error in regular expression: $@", MSGLEVEL_CLIENTERROR);
+			return;
 		}
 	}
 	else