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From "Steven Rowe (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-4335) Builds should regenerate all generated sources
Date Fri, 31 Aug 2012 16:14:07 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-4335?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13446083#comment-13446083
] 

Steven Rowe commented on LUCENE-4335:
-------------------------------------

bq. is there a possibility of a jflex release in the future? It would be nice to regenerate
it via IVY like javacc.

I agree, it would be nice for several reasons to make JFlex downloadable via IVY.

I had planned on working toward a JFlex release this summer, but haven't done any work on
it yet.

                
> Builds should regenerate all generated sources
> ----------------------------------------------
>
>                 Key: LUCENE-4335
>                 URL: https://issues.apache.org/jira/browse/LUCENE-4335
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Michael McCandless
>         Attachments: LUCENE-4335.patch
>
>
> We have more and more sources that are generated programmatically (query parsers, fuzzy
levN tables from Moman, packed ints specialized decoders, etc.), and it's dangerous because
developers may directly edit the generated sources and forget to edit the meta-source.  It's
happened to me several times ... most recently just after landing the BlockPostingsFormat
branch.
> I think we should re-gen all of these in our builds and fail the build if this creates
a difference.  I know some generators (eg JavaCC) embed timestamps and so always create mods
... we can leave them out of this for starters (or maybe post-process the sources to remove
the timestamps) ...

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