Andrey created CODEC-249:
----------------------------
Summary: Incorrect transform of CH digraph according basic rules
Key: CODEC-249
URL: https://issues.apache.org/jira/browse/CODEC-249
Project: Commons Codec
Issue Type: Bug
Reporter: Andrey
I detected incorrect transform of CH digraph by metaphone algorithm.
According _Philips_ _Lawrence_ CH should be transformed to 'X':
{code:java}
'C' transforms to 'X' if followed by 'IA' or 'H' (unless in latter case, it is
part of '-SCH-', in which case it transforms to 'K'). 'C' transforms to 'S' if
followed by 'I', 'E', or 'Y'. Otherwise, 'C' transforms to 'K'.
{code}
But in Apache realization I see
{code:java}
if (isNextChar(local, n, 'H')) { // detect CH
if (n == 0 &&
wdsz >= 3 &&
isVowel(local,2) ) { // CH consonant -> K consonant
code.append('K');
} else {
code.append('X'); // CHvowel -> X
}
{code}
So after transformation I get 'K' instead of 'X'
*Example*: CHERI should be transformed to 'XR' but I get 'KR' which is wrong
This bug has major priority due to big impact on results of metaphone algorithm
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
