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https://issues.apache.org/jira/browse/LUCENE-2244?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12916044#action_12916044
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Robert Muir commented on LUCENE-2244:
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Andi, now that LUCENE-2167 is resolved, i think we should revisit this one.
There are two issues:
* does the tokenization work the way it should for these quotes (I think
LUCENE-2167 will do the right thing)?
* does the 's-stripping (analysis.en.EnglishPossessiveFilter) work the way you
want?
For the latter: it could be extended itself to include more apostrophes, maybe
from this list: http://unicode.org/cldr/utility/confusables.jsp?a='&r=None
Or someone could put ASCIIFoldingFilter before the EnglishPossessiveFilter.
> Improve StandardTokenizer's understanding of non ASCII punctuation and quotes
> -----------------------------------------------------------------------------
>
> Key: LUCENE-2244
> URL: https://issues.apache.org/jira/browse/LUCENE-2244
> Project: Lucene - Java
> Issue Type: Bug
> Components: contrib/analyzers
> Affects Versions: 3.0
> Reporter: Andi Vajda
> Attachments: StandardTokenizerImpl.jflex.diff
>
>
> In the vein of LUCENE-1126 and LUCENE-1390, StandardTokenizerImpl.jflex
> should do a better job at understanding non-ASCII punctuation characters.
> For example, its understanding of the single-quote character "'" is currently
> limited to that character only. It will set a token's type to APOSTROPHE only
> if the "'" was used.
> In the patch attached, I added all the characters that ASCIIFoldingFilter
> would change into "'".
> I'm not sure that this is the right approach so I didn't write a complete
> patch for all the other hardcoded characters used in jflex rules such as ".",
> "-" which have some variants in ASCIIFoldingFilter that could be used as well.
> Maybe a better approach would be to make it possible to have an
> ASCIIFoldingFilter-like reader as a character filter that could be in
> inserted in front of StandardTokenizer ?
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