Fix bug (matryer#487)

* Fix bug case sensitive

* Update version

Email/offlineimap-notification.1s.py

@@ -2,7 +2,7 @@
 # - * -coding: utf - 8 - * -
 #
 # <bitbar.title>Offlineimap Checker and notification</bitbar.title>
-# <bitbar.version>v1.0</bitbar.version>
+# <bitbar.version>v1.1</bitbar.version>
 # <bitbar.author>Andros Fenollosa</bitbar.author>
 # <bitbar.author.github>tanrax</bitbar.author.github>
 # <bitbar.desc>Alert new emails and displays inbox count</bitbar.desc>
@@ -53,9 +53,9 @@ def get_fields(path_mail):
     mail_subject_temp = False
     f = open(path_mail, 'r')
     for line in f:
-        mail_from_temp = re.search('(?<=From\: )(.*)(?=)', line)
-        mail_to_temp = re.search('(?<=To\: )(.*)(?=)', line)
-        mail_subject_temp = re.search('(?<=Subject\: )(.*)(?=)', line)
+        mail_from_temp = re.search('(?<=[Ff]rom\: )(.*)(?=)', line)
+        mail_to_temp = re.search('(?<=[Tt]o\: )(.*)(?=)', line)
+        mail_subject_temp = re.search('(?<=[Ss]ubject\: )(.*)(?=)', line)
         if mail_from_temp:
             mail_from = mail_from_temp.group(1)
         if mail_to_temp: