bugfix...

Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>

object.js

@@ -92,7 +92,8 @@ function(text, tab_size, leading_tabs){
 		: text
 	// trim the tail and remove leading blank lines...	
 	var lines = text.trimEnd().split(/\n/)
-	while(lines[0].trim() == ''){
+	while(lines.length > 0 
+			&& lines[0].trim() == ''){
 		// XXX we have two options here:
 		// 			- indent everyline including the first non-blank
 		// 			- do not indent anything (current)

package.json

@@ -1,6 +1,6 @@
 {
   "name": "ig-object",
-  "version": "5.2.7",
+  "version": "5.2.8",
   "description": "",
   "main": "object.js",
   "scripts": {

test.js

@@ -673,6 +673,8 @@ var cases = test.Cases({
 	// XXX still need to test tab_size values (0, ...)
 	text_cases: [
 		// sanity checks...
+		{ input: '',
+			all: ''},
 		{ input: 'abc',
 			all: 'abc'},
 		{ input: '\n\t\tabc',
@@ -758,28 +760,33 @@ var cases = test.Cases({
 	text: function(assert){
 		this.text_cases
 			.map(function({input, doc, text, all}, i){
-				var res
+				doc = doc != null ? 
+					doc 
+					: all
+				text = text != null ? 
+					text 
+					:  all
 
-				;(doc || all)
+				var test = function(func, input, expect){
-					&& assert((res = object.doc([input])) == (doc || all), 
+					var res
-						'doc(text_cases['+i+']):'
+					return assert((res = object[func](input)) == expect, 
+						func +'(text_cases['+i+']):'
 							+'\n---input---\n'
-							+ input
+							+ (input instanceof Array ?
+								input[0]
+								: input)
 							+'\n---Expected---\n'
-							+ (doc || all)
+							+ expect
 							+'\n---Got---\n'
 							+ res
-							+'\n---')
+							+'\n---') }
-				;(text || all)
+
-					&& assert((res = object.text([input])) == (text || all), 
+				doc != null
-						'text(text_cases['+i+']):'
+					&& test('normalizeIndent', input, doc)
-							+'\n---input---\n'
+					&& test('doc', [input], doc)
-							+ input
+				text != null
-							+'\n---Expected---\n'
+					&& test('normalizeTextIndent', input, text)
-							+ (text || all)
+					&& test('text', [input], text) }) },
-							+'\n---Got---\n'
-							+ res
-							+'\n---') }) },
 })