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https://issues.apache.org/jira/browse/LUCENE-9528?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17200042#comment-17200042
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Dawid Weiss commented on LUCENE-9528:
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I don't think that grammar in javacc is too bad, to be honest - not after a
minor cleanup (and me getting used to some javacc concepts). The problem with
Antlr is that it adds a dependency on its runtime, which kind of sucks.
I honestly don't care much what it's written in as long as it works. :)
Parboiled is kind of fun too [1], for example.
[1] https://en.wikipedia.org/wiki/Parboiled_(Java)
> Clean up obsolete and commented-out cruft from StandardSyntaxParser.jj
> ----------------------------------------------------------------------
>
> Key: LUCENE-9528
> URL: https://issues.apache.org/jira/browse/LUCENE-9528
> Project: Lucene - Core
> Issue Type: Sub-task
> Reporter: Dawid Weiss
> Assignee: Dawid Weiss
> Priority: Minor
> Fix For: master (9.0)
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> The indentation in that file is crazy. So are micro-optimizations which make
> reading the syntax parser much more difficult than it actually is.
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