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https://issues.apache.org/jira/browse/LUCENE-9929?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17321157#comment-17321157
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Robert Muir commented on LUCENE-9929:
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Adding new tokenfilters isn't a breaking change for anyone.
I really think we should structure these components as they make sense for the
user, not thinking about implementation details of the code.
> Make ScandinavianNormalizationFilter configurable wrt foldings
> --------------------------------------------------------------
>
> Key: LUCENE-9929
> URL: https://issues.apache.org/jira/browse/LUCENE-9929
> Project: Lucene - Core
> Issue Type: Improvement
> Components: modules/analysis
> Reporter: Jan Høydahl
> Assignee: Jan Høydahl
> Priority: Major
> Time Spent: 10m
> Remaining Estimate: 0h
>
> The ScandinavianNormalizationFilter applies foldings for aa, ao, ae, oe and
> oo. But all those five do not make sense for both Norwegian, Swedish and
> Danish. Implement an optional configuration option where users can select
> which of them to apply. I.e. for Norwegian, a user would then configure (in
> Solr):
> {code:java}
> <filter class="solr.ScandinavianNormalizationFilterFactory
> foldings="ae,oe,aa"/>
> {code}
> This would activate foldings for ae->æ, oe->ø, aa->å, but not oo->o and ao->a.
> The default will be to activate all five as before, so it will be backward
> compatible.
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