From b9fbbba4af3e56b504240fc32d1c9199f4444212 Mon Sep 17 00:00:00 2001
From: Florian <florian.schmidt.welzow@t-online.de>
Date: Fri, 20 Nov 2015 07:45:46 +0100
Subject: [PATCH] Special:Watchlist: Add user preference to "Show last"
 options, fix float comparison

Also, simplified the "selected" check:
if ( $a == $b ) {
	return true;
} else {
	return false;
}

doesn't make sense, if you can use:
return $a == $b;

Bug: T119172
Bug: T119181
Change-Id: I16e1713bcd6519695961fcaf094a214954e7769c
---
 includes/specials/SpecialWatchlist.php | 23 +++++++++++++++++++----
 1 file changed, 19 insertions(+), 4 deletions(-)

diff --git a/includes/specials/SpecialWatchlist.php b/includes/specials/SpecialWatchlist.php
index 2feaa9e21f..1d6bfb32e4 100644
--- a/includes/specials/SpecialWatchlist.php
+++ b/includes/specials/SpecialWatchlist.php
@@ -507,21 +507,36 @@ class SpecialWatchlist extends ChangesListSpecialPage {
 	}
 
 	function cutoffselector( $options ) {
+		$userWatchlistOption = $this->getUser()->getOption( 'watchlistdays' );
+
 		$list = array();
 		$selectOptions = '';
 		$hours = array( 1, 2, 6, 12 );
 		$days = array( 1, 3, 7 );
+		// add the user preference, if it isn't available already
+		if ( $userWatchlistOption >= 1 && !in_array( $userWatchlistOption, $days ) ) {
+			$days[] = $userWatchlistOption;
+			asort( $days );
+		} elseif ( $userWatchlistOption < 1 && !in_array( $userWatchlistOption * 24, $hours ) ) {
+			$hours[] = $userWatchlistOption * 24;
+			asort( $hours );
+		}
 		foreach ( $hours as $h ) {
-			$name = $this->msg( 'hours', $h );
+			$name = $this->msg( 'hours' )->numParams( $h );
 			$value = $h / 24;
-			$selected = ( $value == $options['days'] ) ? true : false;
+			// due to the possible addition of a user value, it's possible, that both
+			// values ($value and $options['days']) are floats with unexpected comparison
+			// behaviour. Comparing them directly can result in a "not equality" result,
+			// even if the "visible" floats would be the same (e.g. if the user value is
+			// float(0.4)). See PHP docs about Comparing floats.
+			$selected = abs( $value - $options['days'] ) < 0.00001;
 
 			$selectOptions .= Xml::option( $name, $value, $selected );
 		}
 		foreach ( $days as $d ) {
-			$name = $this->msg( 'days', $d );
+			$name = $this->msg( 'days' )->numParams( $d );
 			$value = $d;
-			$selected = ( $value == $options['days'] ) ? true : false;
+			$selected = $value == $options['days'];
 
 			$selectOptions .= Xml::option( $name, $value, $selected );
 		}
-- 
2.20.1