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https://issues.apache.org/jira/browse/LUCENE-9564?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17247738#comment-17247738
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Dawid Weiss commented on LUCENE-9564:
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I'm sorry - I remember about this but didn't have time to push it forward. I'll
create a branch with the necessary infrastructure and perhaps apply it to one
of the smaller projects (or packages) so that you guys (or whoever wants to)
can join in.
The time-consuming part is in applying the formatter and then manually
verifying (the code and the diff) what it potentially did wrong or where the
code shapes can be improved. Sometimes very long nesting can be extracted into
a local variable to make the code look nicer (when formatted), etc.
> Format code automatically and enforce it
> ----------------------------------------
>
> Key: LUCENE-9564
> URL: https://issues.apache.org/jira/browse/LUCENE-9564
> Project: Lucene - Core
> Issue Type: Task
> Reporter: Dawid Weiss
> Assignee: Dawid Weiss
> Priority: Trivial
> Time Spent: 2h 20m
> Remaining Estimate: 0h
>
> This is a trivial change but a bold move. And I'm sure it's not for everyone.
> I started using google java format [1] in my projects a while ago and have
> never looked back since. It is an oracle-style formatter (doesn't allow
> customizations or deviations from the defined 'ideal') - this takes some
> getting used to - but it also eliminates *all* the potential differences
> between IDEs, configs, etc. And the formatted code typically looks much
> better than hand-edited one. It is also verifiable on precommit (so you can't
> commit code that deviates from what you'd get from automated formatting
> output).
> The biggest benefit I see is that refactorings become such a joy and keep the
> code neat, everywhere. Before you commit you just reformat everything
> automatically, no matter how much you messed it up.
> This isn't a change for everyone. I myself love hand-edited, neat code... but
> the reality is that with IDE support for automated code changes and so many
> people with different styles working on the same codebase keeping it neat is
> a big pain.
> Checkstyle and other tools are fine for ensuring certain rules but they don't
> take the burden of formatting off your shoulders. This tool does.
> Like I said - I had *great* reservations about using it at the beginning but
> over time got so used to it that I almost can't live without it now. It's
> like magic - you play with the code in any way you like, then run formatting
> and it's nice and neat.
> The downside is that automated formatting does imply potential merge problems
> in backward patches (or any currently existing branches).
> Like I said, it is a bold move. Just throwing this for your consideration.
> -I've added a PR that adds spotless but it's not ready; some files would have
> to be excluded as they currently violate header rules.-
> A more interesting thing is here where the current code is automatically
> reformatted - this branch is for eyeballing only.
> https://github.com/dweiss/lucene-solr/compare/LUCENE-9564...dweiss:LUCENE-9564-example
> [1] https://google.github.io/styleguide/javaguide.html
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