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From "Rob ten Hove (JIRA)" <>
Subject [jira] Commented: (LUCENE-1373) Most of the contributed Analyzers suffer from invalid recognition of acronyms.
Date Wed, 01 Jul 2009 08:50:47 GMT


Rob ten Hove commented on LUCENE-1373:

Is it possible that when a property has a value that ends on "Type" like "InputFileType" is
not indexed when the OS language is Dutch due to the same bug? I have two installations of
Alfresco 3 Labs with Lucene 2.1.0 autoinstalled and with exactly the same installation options
(English as language for Alfresco) the main difference next to the Hardware is the OS language.
In both cases XP with SP2 but one English and the other Dutch. In the installation on the
Dutch OS three properties with values ending on Type could not be found whereas they are present
in the English version.

> Most of the contributed Analyzers suffer from invalid recognition of acronyms.
> ------------------------------------------------------------------------------
>                 Key: LUCENE-1373
>                 URL:
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: Analysis, contrib/analyzers
>    Affects Versions: 2.3.2
>            Reporter: Mark Lassau
>            Priority: Minor
>         Attachments: LUCENE-1373.patch
> LUCENE-1068 describes a bug in StandardTokenizer whereby a string like ""
would be incorrectly tokenized as an acronym (note the dot at the end).
> Unfortunately, keeping the "backward compatibility" of a bug turns out to harm us.
> StandardTokenizer has a couple of ways to indicate "fix this bug", but unfortunately
the default behaviour is still to be buggy.
> Most of the non-English analyzers provided in lucene-analyzers utilize the StandardTokenizer,
and in v2.3.2 not one of these provides a way to get the non-buggy behaviour :(
> I refer to:
> * BrazilianAnalyzer
> * CzechAnalyzer
> * DutchAnalyzer
> * FrenchAnalyzer
> * GermanAnalyzer
> * GreekAnalyzer
> * ThaiAnalyzer

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