[jira] Commented: (LUCENE-1787) Standard Tokenizer doesn't recognise I.B.M as Acronym, it requires it ends with a dot i.e I.B.M.

["Yonik Seeley (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/LUCENE-1787?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12740232#action_12740232 ] 

Yonik Seeley commented on LUCENE-1787:
--------------------------------------

You would want it to be greedy such that it would match a trailing period if it did exist though.

A("."A)+"."?

> Standard Tokenizer doesn't recognise I.B.M as Acronym, it requires it ends with a dot i.e I.B.M.
> ------------------------------------------------------------------------------------------------
>
>                 Key: LUCENE-1787
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1787
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: Analysis
>    Affects Versions: 2.9
>            Reporter: Paul taylor
>
> Standard Tokenzizer doesn't recognise I.B.M it requires it end with a dot i.e I.B.M. This is particulary problematic if I.B.M is added tot the index, with the StandardAnalyser it will get added as  IBM , a search for I.B.M will not match because I.B.M will be left as is, I would expect a match in this scenario
> I think it could be fixed by modifying the  grammar ACRONYM_DEP  in StandardTokenizerImpl.jflex so that it also supports
> {ALPHANUM} ("." {ALPHANUM})+
> dot only required between each character, (I'm not familiar with jflex syntax )

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