From 86470e7a308fa9d65ff8957deb829590ac59dc2c Mon Sep 17 00:00:00 2001
From: vrana <jakubv@fb.com>
Date: Thu, 6 Dec 2012 07:52:33 -0800
Subject: [PATCH] Handle empty lines in makeChangesWithContext()

Summary: Happens on the end of hunk.

Test Plan:
  $ ./reparse.php

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D4091
---
 .../differential/storage/DifferentialChangeset.php             | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/applications/differential/storage/DifferentialChangeset.php b/src/applications/differential/storage/DifferentialChangeset.php
index abf3ba7f67..9e5466c660 100644
--- a/src/applications/differential/storage/DifferentialChangeset.php
+++ b/src/applications/differential/storage/DifferentialChangeset.php
@@ -137,7 +137,8 @@ final class DifferentialChangeset extends DifferentialDAO {
       $context = array();
       $changes = explode("\n", $hunk->getChanges());
       foreach ($changes as $l => $line) {
-        if ($line[0] == '+' || $line[0] == '-') {
+        $type = substr($line, 0, 1);
+        if ($type == '+' || $type == '-') {
           $context += array_fill($l - $num_lines, 2 * $num_lines + 1, true);
         }
       }