Hi all.
We discovered that fullwidth letters are not treated as <LETTER> and fullwidth
digits are not treated as <DIGIT>.
This in itself is probably easy to fix (including the filter for normalising
these back to the normal versions) but while sanity checking the blocks in
StandardTokenizer.jj I found some suspicious parts and felt it necessary to
check that this is by design as there is no comment explaining the anomalies.
Line 87:
"\uffa0"-"\uffdc"
The halfwidth Katakana "letters" (as Unicode calls them) are in <CJ> as
expected, so I'm wondering if these halfwidth Hangul "letters" should
actually be in <KOREAN> instead of <LETTER>.
Line 92:
"\u3040"-"\u318f",
This block appears to duplicate the ranges in the next three lines and
suspiciously also includes a range which belongs to <KOREAN>, making me
wonder what happens when a range is in two blocks.
In case anyone is wondering, the JFlex version of the tokeniser on Lucene
trunk has the same ranges.
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