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Posted to dev@lucene.apache.org by "David Croley (Created) (JIRA)" <ji...@apache.org> on 2012/02/02 21:20:53 UTC
[jira] [Created] (LUCENE-3748) EnglishPossessiveFilter should work
with Unicode right single quotation mark
EnglishPossessiveFilter should work with Unicode right single quotation mark
----------------------------------------------------------------------------
Key: LUCENE-3748
URL: https://issues.apache.org/jira/browse/LUCENE-3748
Project: Lucene - Java
Issue Type: Improvement
Components: modules/analysis
Affects Versions: 3.5, 3.4, 3.2, 3.1
Reporter: David Croley
Priority: Minor
Attachments: LucenePatch
The current EnglishPossessiveFilter (used in EnglishAnalyzer) removes possessives using only the '\'' character (plus 's' or 'S'), but some common systems (German?) insert the Unicode "\u2019" (RIGHT SINGLE QUOTATION MARK) instead and this is not removed when processing UTF-8 text. I propose to change EnglishPossesiveFilter to support '\u2019' as an alternative to '\''.
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[jira] [Commented] (LUCENE-3748) EnglishPossessiveFilter should
work with Unicode right single quotation mark
Posted by "Robert Muir (Commented) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/LUCENE-3748?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13199189#comment-13199189 ]
Robert Muir commented on LUCENE-3748:
-------------------------------------
I agree with the patch. We can easily add backwards compat here, no problem.
As far as any potential others, the only possibility from my perspective is U+FF07 FULLWIDTH APOSTROPHE,
though I could go either way on that (since its a compatibility character)
Any other opinions?
> EnglishPossessiveFilter should work with Unicode right single quotation mark
> ----------------------------------------------------------------------------
>
> Key: LUCENE-3748
> URL: https://issues.apache.org/jira/browse/LUCENE-3748
> Project: Lucene - Java
> Issue Type: Improvement
> Components: modules/analysis
> Affects Versions: 3.1, 3.2, 3.4, 3.5
> Reporter: David Croley
> Priority: Minor
> Attachments: LucenePatch
>
>
> The current EnglishPossessiveFilter (used in EnglishAnalyzer) removes possessives using only the '\'' character (plus 's' or 'S'), but some common systems (German?) insert the Unicode "\u2019" (RIGHT SINGLE QUOTATION MARK) instead and this is not removed when processing UTF-8 text. I propose to change EnglishPossesiveFilter to support '\u2019' as an alternative to '\''.
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[jira] [Commented] (LUCENE-3748) EnglishPossessiveFilter should
work with Unicode right single quotation mark
Posted by "Walter Underwood (Commented) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/LUCENE-3748?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13199390#comment-13199390 ]
Walter Underwood commented on LUCENE-3748:
------------------------------------------
Why make separate patches for characters instead of using Unicode normalization? Converting to NFKC would also solve this for the prime character (U+2032) and any other codepoint that is equivalent.
Compatibility normalization is designed for precisely this purpose, equivalence ignoring appearance.
> EnglishPossessiveFilter should work with Unicode right single quotation mark
> ----------------------------------------------------------------------------
>
> Key: LUCENE-3748
> URL: https://issues.apache.org/jira/browse/LUCENE-3748
> Project: Lucene - Java
> Issue Type: Improvement
> Components: modules/analysis
> Affects Versions: 3.1, 3.2, 3.4, 3.5
> Reporter: David Croley
> Assignee: Robert Muir
> Priority: Minor
> Attachments: LucenePatch, Patch-Lucene-3748
>
>
> The current EnglishPossessiveFilter (used in EnglishAnalyzer) removes possessives using only the '\'' character (plus 's' or 'S'), but some common systems (German?) insert the Unicode "\u2019" (RIGHT SINGLE QUOTATION MARK) instead and this is not removed when processing UTF-8 text. I propose to change EnglishPossesiveFilter to support '\u2019' as an alternative to '\''.
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[jira] [Commented] (LUCENE-3748) EnglishPossessiveFilter should
work with Unicode right single quotation mark
Posted by "Steven Rowe (Commented) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/LUCENE-3748?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13199204#comment-13199204 ]
Steven Rowe commented on LUCENE-3748:
-------------------------------------
+1, and +1 to include U+FF07.
There are several other characters listed with U+0027 APOSTROPHE in http://www.unicode.org/charts/PDF/U0000.pdf that could be interpreted visually as an English apostrophe, e.g. U+02BC MODIFIER LETTER APOSTROPHE, but it would be unusual for people to use those characters as apostrophes in English text, so I think it would be fine to exclude them. (By contrast, the Unicode standard says that U+2019 is the *preferred* apostrophe form.)
> EnglishPossessiveFilter should work with Unicode right single quotation mark
> ----------------------------------------------------------------------------
>
> Key: LUCENE-3748
> URL: https://issues.apache.org/jira/browse/LUCENE-3748
> Project: Lucene - Java
> Issue Type: Improvement
> Components: modules/analysis
> Affects Versions: 3.1, 3.2, 3.4, 3.5
> Reporter: David Croley
> Priority: Minor
> Attachments: LucenePatch
>
>
> The current EnglishPossessiveFilter (used in EnglishAnalyzer) removes possessives using only the '\'' character (plus 's' or 'S'), but some common systems (German?) insert the Unicode "\u2019" (RIGHT SINGLE QUOTATION MARK) instead and this is not removed when processing UTF-8 text. I propose to change EnglishPossesiveFilter to support '\u2019' as an alternative to '\''.
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[jira] [Assigned] (LUCENE-3748) EnglishPossessiveFilter should work
with Unicode right single quotation mark
Posted by "Robert Muir (Assigned) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/LUCENE-3748?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Robert Muir reassigned LUCENE-3748:
-----------------------------------
Assignee: Robert Muir
> EnglishPossessiveFilter should work with Unicode right single quotation mark
> ----------------------------------------------------------------------------
>
> Key: LUCENE-3748
> URL: https://issues.apache.org/jira/browse/LUCENE-3748
> Project: Lucene - Java
> Issue Type: Improvement
> Components: modules/analysis
> Affects Versions: 3.1, 3.2, 3.4, 3.5
> Reporter: David Croley
> Assignee: Robert Muir
> Priority: Minor
> Attachments: LucenePatch, Patch-Lucene-3748
>
>
> The current EnglishPossessiveFilter (used in EnglishAnalyzer) removes possessives using only the '\'' character (plus 's' or 'S'), but some common systems (German?) insert the Unicode "\u2019" (RIGHT SINGLE QUOTATION MARK) instead and this is not removed when processing UTF-8 text. I propose to change EnglishPossesiveFilter to support '\u2019' as an alternative to '\''.
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[jira] [Commented] (LUCENE-3748) EnglishPossessiveFilter should
work with Unicode right single quotation mark
Posted by "Robert Muir (Commented) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/LUCENE-3748?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13199217#comment-13199217 ]
Robert Muir commented on LUCENE-3748:
-------------------------------------
Thats my thoughts exactly Steven.
I think by default we should go with U+0027 and U+2019 (and as i mentioned, either FF07 or not, its less important).
As far as other look-alikes, sure it could happen, BUT the user could just place ASCIIFoldingFilter before
EnglishPossessiveFilter if they want that more brutal behavior... thats a more lossy normalization that I
don't think we should do by default...
> EnglishPossessiveFilter should work with Unicode right single quotation mark
> ----------------------------------------------------------------------------
>
> Key: LUCENE-3748
> URL: https://issues.apache.org/jira/browse/LUCENE-3748
> Project: Lucene - Java
> Issue Type: Improvement
> Components: modules/analysis
> Affects Versions: 3.1, 3.2, 3.4, 3.5
> Reporter: David Croley
> Priority: Minor
> Attachments: LucenePatch
>
>
> The current EnglishPossessiveFilter (used in EnglishAnalyzer) removes possessives using only the '\'' character (plus 's' or 'S'), but some common systems (German?) insert the Unicode "\u2019" (RIGHT SINGLE QUOTATION MARK) instead and this is not removed when processing UTF-8 text. I propose to change EnglishPossesiveFilter to support '\u2019' as an alternative to '\''.
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[jira] [Commented] (LUCENE-3748) EnglishPossessiveFilter should
work with Unicode right single quotation mark
Posted by "Robert Muir (Commented) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/LUCENE-3748?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13199267#comment-13199267 ]
Robert Muir commented on LUCENE-3748:
-------------------------------------
I think we should do it (despite the cruft).
One of these days we will realize our goal of a stable interface between indexwriter etc and analyzers such
that if you are really worried about this with old indexes, you just use lucene-analyzers-ancient-version.jar
and it works with the newer lucene-core.jar
But until then, i think we need it (e.g. we add a deprecated ctor for api compatibility that forwards to VERSION.LUCENE_35)
and conditionalize the handling based on Version.
If you dont want to cruft-it-up lemme know, otherwise feel free to add a patch :)
> EnglishPossessiveFilter should work with Unicode right single quotation mark
> ----------------------------------------------------------------------------
>
> Key: LUCENE-3748
> URL: https://issues.apache.org/jira/browse/LUCENE-3748
> Project: Lucene - Java
> Issue Type: Improvement
> Components: modules/analysis
> Affects Versions: 3.1, 3.2, 3.4, 3.5
> Reporter: David Croley
> Priority: Minor
> Attachments: LucenePatch
>
>
> The current EnglishPossessiveFilter (used in EnglishAnalyzer) removes possessives using only the '\'' character (plus 's' or 'S'), but some common systems (German?) insert the Unicode "\u2019" (RIGHT SINGLE QUOTATION MARK) instead and this is not removed when processing UTF-8 text. I propose to change EnglishPossesiveFilter to support '\u2019' as an alternative to '\''.
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[jira] [Updated] (LUCENE-3748) EnglishPossessiveFilter should work
with Unicode right single quotation mark
Posted by "Robert Muir (Updated) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/LUCENE-3748?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Robert Muir updated LUCENE-3748:
--------------------------------
Attachment: LUCENE-3748.patch
updated patch: thanks again David.
I added some javadocs, CHANGES.txt, an assertion to the solr factory, and (somewhat reluctantly) FF07.
> EnglishPossessiveFilter should work with Unicode right single quotation mark
> ----------------------------------------------------------------------------
>
> Key: LUCENE-3748
> URL: https://issues.apache.org/jira/browse/LUCENE-3748
> Project: Lucene - Java
> Issue Type: Improvement
> Components: modules/analysis
> Affects Versions: 3.1, 3.2, 3.4, 3.5
> Reporter: David Croley
> Assignee: Robert Muir
> Priority: Minor
> Attachments: LUCENE-3748.patch, LucenePatch, Patch-Lucene-3748
>
>
> The current EnglishPossessiveFilter (used in EnglishAnalyzer) removes possessives using only the '\'' character (plus 's' or 'S'), but some common systems (German?) insert the Unicode "\u2019" (RIGHT SINGLE QUOTATION MARK) instead and this is not removed when processing UTF-8 text. I propose to change EnglishPossesiveFilter to support '\u2019' as an alternative to '\''.
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[jira] [Resolved] (LUCENE-3748) EnglishPossessiveFilter should work
with Unicode right single quotation mark
Posted by "Robert Muir (Resolved) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/LUCENE-3748?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Robert Muir resolved LUCENE-3748.
---------------------------------
Resolution: Fixed
Fix Version/s: 4.0
3.6
Thanks David!
> EnglishPossessiveFilter should work with Unicode right single quotation mark
> ----------------------------------------------------------------------------
>
> Key: LUCENE-3748
> URL: https://issues.apache.org/jira/browse/LUCENE-3748
> Project: Lucene - Java
> Issue Type: Improvement
> Components: modules/analysis
> Affects Versions: 3.1, 3.2, 3.4, 3.5
> Reporter: David Croley
> Assignee: Robert Muir
> Priority: Minor
> Fix For: 3.6, 4.0
>
> Attachments: LUCENE-3748.patch, LucenePatch, Patch-Lucene-3748
>
>
> The current EnglishPossessiveFilter (used in EnglishAnalyzer) removes possessives using only the '\'' character (plus 's' or 'S'), but some common systems (German?) insert the Unicode "\u2019" (RIGHT SINGLE QUOTATION MARK) instead and this is not removed when processing UTF-8 text. I propose to change EnglishPossesiveFilter to support '\u2019' as an alternative to '\''.
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[jira] [Commented] (LUCENE-3748) EnglishPossessiveFilter should
work with Unicode right single quotation mark
Posted by "David Croley (Commented) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/LUCENE-3748?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13199262#comment-13199262 ]
David Croley commented on LUCENE-3748:
--------------------------------------
If you want to preserve backwards compatibility, I guess I could pass matchVersion in from the calling Analyzer, but that crufts it up a bit. Is that necessary?
> EnglishPossessiveFilter should work with Unicode right single quotation mark
> ----------------------------------------------------------------------------
>
> Key: LUCENE-3748
> URL: https://issues.apache.org/jira/browse/LUCENE-3748
> Project: Lucene - Java
> Issue Type: Improvement
> Components: modules/analysis
> Affects Versions: 3.1, 3.2, 3.4, 3.5
> Reporter: David Croley
> Priority: Minor
> Attachments: LucenePatch
>
>
> The current EnglishPossessiveFilter (used in EnglishAnalyzer) removes possessives using only the '\'' character (plus 's' or 'S'), but some common systems (German?) insert the Unicode "\u2019" (RIGHT SINGLE QUOTATION MARK) instead and this is not removed when processing UTF-8 text. I propose to change EnglishPossesiveFilter to support '\u2019' as an alternative to '\''.
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[jira] [Updated] (LUCENE-3748) EnglishPossessiveFilter should work
with Unicode right single quotation mark
Posted by "David Croley (Updated) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/LUCENE-3748?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
David Croley updated LUCENE-3748:
---------------------------------
Attachment: Patch-Lucene-3748
newer patch that preserve backwards compatibility. Not sure if I've done that the best way, so feel free to change as needed.
> EnglishPossessiveFilter should work with Unicode right single quotation mark
> ----------------------------------------------------------------------------
>
> Key: LUCENE-3748
> URL: https://issues.apache.org/jira/browse/LUCENE-3748
> Project: Lucene - Java
> Issue Type: Improvement
> Components: modules/analysis
> Affects Versions: 3.1, 3.2, 3.4, 3.5
> Reporter: David Croley
> Priority: Minor
> Attachments: LucenePatch, Patch-Lucene-3748
>
>
> The current EnglishPossessiveFilter (used in EnglishAnalyzer) removes possessives using only the '\'' character (plus 's' or 'S'), but some common systems (German?) insert the Unicode "\u2019" (RIGHT SINGLE QUOTATION MARK) instead and this is not removed when processing UTF-8 text. I propose to change EnglishPossesiveFilter to support '\u2019' as an alternative to '\''.
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[jira] [Updated] (LUCENE-3748) EnglishPossessiveFilter should work
with Unicode right single quotation mark
Posted by "David Croley (Updated) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/LUCENE-3748?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
David Croley updated LUCENE-3748:
---------------------------------
Attachment: LucenePatch
patch to address bug and add unit test for same.
> EnglishPossessiveFilter should work with Unicode right single quotation mark
> ----------------------------------------------------------------------------
>
> Key: LUCENE-3748
> URL: https://issues.apache.org/jira/browse/LUCENE-3748
> Project: Lucene - Java
> Issue Type: Improvement
> Components: modules/analysis
> Affects Versions: 3.1, 3.2, 3.4, 3.5
> Reporter: David Croley
> Priority: Minor
> Attachments: LucenePatch
>
>
> The current EnglishPossessiveFilter (used in EnglishAnalyzer) removes possessives using only the '\'' character (plus 's' or 'S'), but some common systems (German?) insert the Unicode "\u2019" (RIGHT SINGLE QUOTATION MARK) instead and this is not removed when processing UTF-8 text. I propose to change EnglishPossesiveFilter to support '\u2019' as an alternative to '\''.
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[jira] [Commented] (LUCENE-3748) EnglishPossessiveFilter should
work with Unicode right single quotation mark
Posted by "Robert Muir (Commented) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/LUCENE-3748?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13199398#comment-13199398 ]
Robert Muir commented on LUCENE-3748:
-------------------------------------
Walter: U+2019 does not decompose at all (see http://unicode.org/cldr/utility/character.jsp?a=2019&B1=Show)
This is because its not a compatibility character of any reason, in fact its the single quote (U+0027)
thats ambiguous, U+2019 is the correct one here.
>From a pedantic point of view, we should be forcing you to disambiguate the very ambiguous single quote (U+0027)
on your keyboard and *ONLY* handling U+2019 in this filter, but I realize some people might find this opinion a
tad extreme :)
> EnglishPossessiveFilter should work with Unicode right single quotation mark
> ----------------------------------------------------------------------------
>
> Key: LUCENE-3748
> URL: https://issues.apache.org/jira/browse/LUCENE-3748
> Project: Lucene - Java
> Issue Type: Improvement
> Components: modules/analysis
> Affects Versions: 3.1, 3.2, 3.4, 3.5
> Reporter: David Croley
> Assignee: Robert Muir
> Priority: Minor
> Attachments: LucenePatch, Patch-Lucene-3748
>
>
> The current EnglishPossessiveFilter (used in EnglishAnalyzer) removes possessives using only the '\'' character (plus 's' or 'S'), but some common systems (German?) insert the Unicode "\u2019" (RIGHT SINGLE QUOTATION MARK) instead and this is not removed when processing UTF-8 text. I propose to change EnglishPossesiveFilter to support '\u2019' as an alternative to '\''.
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