diff --git a/jieba/__init__.py b/jieba/__init__.py
index 2601740..62185aa 100644
--- a/jieba/__init__.py
+++ b/jieba/__init__.py
@@ -233,7 +233,7 @@ def enable_parallel(processnum):
 	pool = Pool(processnum)
 
 	def pcut(sentence,cut_all=False):
-		parts = re.compile('(\s+)').split(sentence)
+		parts = re.compile('([\r\n]+)').split(sentence)
 		if cut_all:
 			result = pool.map(__lcut_all,parts) 
 		else:
@@ -243,7 +243,7 @@ def enable_parallel(processnum):
 				yield w
 
 	def pcut_for_search(sentence):
-		parts = re.compile('(\s+)').split(sentence)
+		parts = re.compile('([\r\n]+)').split(sentence)
 		result = pool.map(__lcut_for_search,parts)
 		for r in result:
 			for w in r:
diff --git a/jieba/posseg/__init__.py b/jieba/posseg/__init__.py
index 8e4ee95..8e265aa 100644
--- a/jieba/posseg/__init__.py
+++ b/jieba/posseg/__init__.py
@@ -155,7 +155,7 @@ def cut(sentence):
 		for w in __cut_internal(sentence):
 			yield w
 	else:
-		parts = re.compile('(\s+)').split(sentence)
+		parts = re.compile('([\r\n]+)').split(sentence)
 		result = jieba.pool.map(__lcut_internal,parts)	
 		for r in result:
 			for w in r:
diff --git a/test/parallel/extract_tags.py b/test/parallel/extract_tags.py
new file mode 100644
index 0000000..f187df9
--- /dev/null
+++ b/test/parallel/extract_tags.py
@@ -0,0 +1,34 @@
+import sys
+sys.path.append('../../')
+
+import jieba
+jieba.enable_parallel(4)
+import jieba.analyse
+from optparse import OptionParser
+
+USAGE ="usage:    python extract_tags.py [file name] -k [top k]"
+
+parser = OptionParser(USAGE)
+parser.add_option("-k",dest="topK")
+opt, args = parser.parse_args()
+
+
+if len(args) <1:
+	print USAGE
+	sys.exit(1)
+
+file_name = args[0]
+
+if opt.topK==None:
+	topK=10
+else:
+	topK = int(opt.topK)
+
+
+content = open(file_name,'rb').read()
+
+tags = jieba.analyse.extract_tags(content,topK=topK)
+
+print ",".join(tags)
+
+