Chanukah Regex
According to http://www.holidays.net/chanukah/spelling.htm, it can be spelled any of the following ways:
Chanuka
Chanukah
Chanukkah
Channukah
Hanukah
Hannukah
Hanukkah
Hanuka
Hanukka
Hanaka
Haneka
Hanika
Khanukkah
Here is my regex that matches all of them:
/(Ch|H|Kh)ann?[aeiu]kk?ah?/
Edit: Or this, without branches:
/[CHK]h?ann?[aeiu]kk?ah?/
Call me a sucker for readability.
In Python:
def find_hanukkah(s):
import re
spellings = ['hannukah', 'channukah', 'hanukkah'] # etc...
for m in re.finditer('|'.join(spellings), s, re.I):
print m.group()
find_hanukkah("Hannukah Channukah, Hanukkah")