[ https://issues.apache.org/jira/browse/LUCENE-3801?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13220919#comment-13220919 ] 

Christian Moen commented on LUCENE-3801:
----------------------------------------

Exactly.  If we match on normalized forms that also deal with the combined scripts users would use when they type in Japanese queries, i.e. ほっk to get 北海道 (Hokkaido) suggested, I think we have a good starting point to build a Japanese query suggester/autocompleter.
                
> Generify FST shortestPaths() to take a comparator
> -------------------------------------------------
>
>                 Key: LUCENE-3801
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3801
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: core/FSTs
>    Affects Versions: 3.6, 4.0
>            Reporter: Robert Muir
>            Assignee: Robert Muir
>         Attachments: LUCENE-3801.patch, LUCENE-3801.patch, LUCENE-3801.patch
>
>
> Not sure we should do this, it costs 5-10% performance for WFSTSuggester.
> But maybe we can optimize something here, or maybe its just no big deal to us.
> Because in general, this could be pretty powerful, e.g. if you needed to store 
> some custom stuff in the suggester, you could use pairoutputs, or whatever.
> And the possibility we might need shortestPaths for other cool things... at the
> least I just wanted to have the patch up here.
> I haven't tested this on pairoutputs... but i've tested it with e.g. FloatOutputs
> and other things and it works fine.
> I tried to minimize the generics violations, there is only 1 (cannot create generic array).

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