tweak capitalization of mac regex to fix "mack", fixes #56

Author: derek73

nameparser/config/regexes.py

@@ -21,7 +21,7 @@
 REGEXES = set([
     ("spaces", re.compile(r"\s+", re.U)),
     ("word", re.compile(r"(\w|\.)+", re.U)),
-    ("mac", re.compile(r'^(ma?c)(\w+)', re.I | re.U)),
+    ("mac", re.compile(r'^(ma?c)(\w{2,})', re.I | re.U)),
     ("initial", re.compile(r'^(\w\.|[A-Z])?$', re.U)),
     ("nickname", re.compile(r'\s*?[\("](.+?)[\)"]', re.U)),
     ("roman_numeral", re.compile(r'^(X|IX|IV|V?I{0,3})$', re.I | re.U)),

tests.py

@@ -1858,6 +1858,10 @@ def test_downcasing_mc(self):
         hn.capitalize()
         self.m(str(hn), 'Ronald McDonald', hn)
 
+    def test_short_names_with_mac(self):
+        hn = HumanName('mack johnson')
+        hn.capitalize()
+        self.m(str(hn), 'Mack Johnson', hn)
 
 class HumanNameOutputFormatTests(HumanNameTestBase):