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From Cédrik LIME (JIRA) <>
Subject [jira] Updated: (LUCENE-2015) ASCIIFoldingFilter: expose folding logic + small improvements to ISOLatin1AccentFilter
Date Tue, 03 Nov 2009 09:53:59 GMT


Cédrik LIME updated LUCENE-2015:

    Attachment: ASCIIFoldingFilter-no_formatting.patch

As suggested by Robert, here is a new version of the ASCIIFoldingFilter patch which exposes
the folding logic.
I have added 2 convenience methods that can operate on a char[] and on a CharSequence.

> ASCIIFoldingFilter: expose folding logic + small improvements to ISOLatin1AccentFilter
> --------------------------------------------------------------------------------------
>                 Key: LUCENE-2015
>                 URL:
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: Analysis
>            Reporter: Cédrik LIME
>            Priority: Minor
>         Attachments: ASCIIFoldingFilter-no_formatting.patch, ASCIIFoldingFilter-no_formatting.patch,
Filters.patch, ISOLatin1AccentFilter.patch
> This patch adds a couple of non-ascii chars to ISOLatin1AccentFilter (namely: left &
right single quotation marks, en dash, em dash) which we very frequently encounter in our
projects. I know that this class is now deprecated; this improvement is for legacy code that
hasn't migrated yet.
> It also enables easy access to the ascii folding technique use in ASCIIFoldingFilter
for potential re-use in non-Lucene-related code.

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