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https://issues.apache.org/jira/browse/LUCENE-2781?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12964753#action_12964753
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Robert Muir commented on LUCENE-2781:
-------------------------------------
{quote}
we can reliably drop DutchStemFilter+DutchStemmer, people will fix their code
to use SnowballFilter and happily read their 3.0 indexes.
No?
{quote}
The DutchStemmer might claim that, but it wasnt completely faithful to the
algorithm (buggy).
here's my example from LUCENE-2055:
{noformat}
DutchStemFilter passes 98.9% of snowball tests. all bugs were in handling of
double consonants:
examples:
aangetroffen -> aangetrof expected: aangetroff
afvoerbonnen -> afvoerbon expected: afvoerbonn
klommen -> klom expected: klomm
{noformat}
So we kept the buggy implementation, for index back compat :(
> Drop deprecations from trunk
> ----------------------------
>
> Key: LUCENE-2781
> URL: https://issues.apache.org/jira/browse/LUCENE-2781
> Project: Lucene - Java
> Issue Type: Task
> Affects Versions: 4.0
> Reporter: Earwin Burrfoot
> Assignee: Robert Muir
> Priority: Minor
> Attachments: drop-deprecations.patch, drop-deprecations.patch,
> drop-deprecations.patch, drop-deprecations.patch
>
>
> subj.
> Also, to each remaining deprecation add release version when it first
> appeared.
> Patch incoming.
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