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From "Robert Muir (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-4019) Parsing Hunspell affix rules without regexp condition
Date Tue, 24 Apr 2012 14:01:36 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-4019?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13260566#comment-13260566
] 

Robert Muir commented on LUCENE-4019:
-------------------------------------

I dont know if there is a real spec, more just what hunspell allows.

Furthermore i think some of these dictionaries are actually in ispell/myspell format
and hunspell is actually backwards compatible with them?

as far as a "spec" for all of these, good luck :)

when i was looking at this I looked at stuff like:
* http://pwet.fr/man/linux/fichiers_speciaux/hunspell
* http://www.openoffice.org/lingucomponent/affix.readme
                
> Parsing Hunspell affix rules without regexp condition
> -----------------------------------------------------
>
>                 Key: LUCENE-4019
>                 URL: https://issues.apache.org/jira/browse/LUCENE-4019
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: modules/analysis
>    Affects Versions: 3.6
>            Reporter: Luca Cavanna
>
> We found out that some recent Dutch hunspell dictionaries contain suffix or prefix rules
like the following:
> {code} 
> SFX Na N 1
> SFX Na 0 ste
> {code}
> The rule on the second line doesn't contain the 5th parameter, which should be the condition
(a regexp usually). You can usually see a '.' as condition, meaning always (for every character).
As explained in LUCENE-3976 the readAffix method throws error. I wonder if we should treat
the missing value as a kind of default value, like '.'.  On the other hand I haven't found
any information about this within the spec. Any thoughts?

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