Spanish unit test fails if lower case letters (a-z) are included in nonbreaking_prefix.es

[GoogleCodeExporter]

Repro steps:
1. Add the letters a-z to nonbreaking_prefix.es (one letter per line
2. Run unit tests

Results:
The sentence breaker does not break after the sentence ending "multilingüe."

Possible explanation: the accented character is regarded a word boundary in the 
regular expression breaking the sentences?

Original issue reported on code.google.com by Achi...@gmail.com on 7 Jul 2010 at 4:50