From b005f8233ed8963dfb7542afb70deb5ba79927f7 Mon Sep 17 00:00:00 2001
From: Shane Kilkelly <shane@kilkelly.me>
Date: Mon, 29 Feb 2016 15:52:02 +0000
Subject: [PATCH] guard against null and undefined keys in `\cite{}`
 autocomplete

---
 .../auto-complete/AutoCompleteManager.coffee        | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/services/web/public/coffee/ide/editor/directives/aceEditor/auto-complete/AutoCompleteManager.coffee b/services/web/public/coffee/ide/editor/directives/aceEditor/auto-complete/AutoCompleteManager.coffee
index a8afdeaa44..7b4889a81e 100644
--- a/services/web/public/coffee/ide/editor/directives/aceEditor/auto-complete/AutoCompleteManager.coffee
+++ b/services/web/public/coffee/ide/editor/directives/aceEditor/auto-complete/AutoCompleteManager.coffee
@@ -66,12 +66,13 @@ define [
 							}
 							if references.keys and references.keys.length > 0
 								references.keys.forEach (key) ->
-									result.push({
-										caption: "\\#{commandName}{#{previousArgsCaption}#{key}",
-										value: "\\#{commandName}{#{previousArgs}#{key}",
-										meta: "reference",
-										score: 10000
-									})
+									if !(key in [null, undefined])
+										result.push({
+											caption: "\\#{commandName}{#{previousArgsCaption}#{key}",
+											value: "\\#{commandName}{#{previousArgs}#{key}",
+											meta: "reference",
+											score: 10000
+										})
 								callback null, result
 							else
 								callback null, result