# HG changeset patch
# User Bernhard Herzog <bh@intevation.de>
# Date 1188580038 0
# Node ID 83e48a76f759034eda99bb253ebe4e0a3284bee7
# Parent  3b9f35a50abf52c74b8ad2286e43fd77d572ffd9
Document what extract_value_for_key returns when the key is not found

diff -r 3b9f35a50abf -r 83e48a76f759 treepkg/util.py
--- a/treepkg/util.py	Fri Aug 31 17:04:27 2007 +0000
+++ b/treepkg/util.py	Fri Aug 31 17:07:18 2007 +0000
@@ -26,6 +26,8 @@
     The function determines the first string in lines that starts with
     key.  It returns the rest of the lines stripped of leading and
     trailing whitespace.
+
+    If the key is not found in lines, the function returns None.
     """
     for line in lines:
         if line.startswith(key):