Hi Shawan, Thank you so much for the kind response.
> Those filters operate on single characters from the input, which means > they cannot take character context into account like ICU does. If I am > reading what the ASCII filter does correctly, it may not work for Greek > characters at all -- it says that it folds to the lower range of ASCII, > and that character set doesn't have Greek letters yes, as of now we are using ASCIIFolding filter and LowerCaseFilter to remove diacritics and case folding but in some cases, it doesn't work for greek accent characters. So only, I am looking for better solution. -- Regards, Chitra