From 8b771555a56ec9e6a4bcd2ad0b5a19181f4cc063 Mon Sep 17 00:00:00 2001
From: Tobias Beer <beertobias@gmail.com>
Date: Wed, 28 Jan 2015 22:15:52 +0100
Subject: [PATCH] initial commit

Is `wiki.parseTextReference()` the appropriate way?
---
 core/modules/filters/getIndex.js | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 core/modules/filters/getIndex.js

diff --git a/core/modules/filters/getIndex.js b/core/modules/filters/getIndex.js
new file mode 100644
index 000000000..1d3dd0224
--- /dev/null
+++ b/core/modules/filters/getIndex.js
@@ -0,0 +1,32 @@
+/*\
+title: $:/core/modules/filters/getIndex.js
+type: application/javascript
+module-type: filteroperator
+
+returns the value at a given index of datatiddlers
+
+\*/
+(function(){
+
+/*jslint node: true, browser: true */
+/*global $tw: false */
+"use strict";
+
+/*
+Export our filter function
+*/
+exports.getIndex = function(source,operator,options) {
+	var data,title,results = [];
+	if(operator.operand){
+		source(function(tiddler,title) {
+			title = tiddler ? tiddler.fields.title : title;
+			data = options.wiki.parseTextReference(title,"",operator.operand,{});
+			if(data) {
+				results.push(data.source);
+			}
+		});
+	}
+	return results;
+};
+
+})();