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https://issues.apache.org/jira/browse/GROOVY-11601?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17950303#comment-17950303
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ASF GitHub Bot commented on GROOVY-11601:
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eric-milles closed pull request #2174: GROOVY-11601: remove support for
expression list in `for`-each statement
URL: https://github.com/apache/groovy/pull/2174
> remove support for expression list in for-each statement
> --------------------------------------------------------
>
> Key: GROOVY-11601
> URL: https://issues.apache.org/jira/browse/GROOVY-11601
> Project: Groovy
> Issue Type: Improvement
> Components: parser-antlr4
> Reporter: Eric Milles
> Assignee: Eric Milles
> Priority: Minor
>
> The for-each loop supports an arbitrary expression list. Presumably this is
> for legacy reasons. Now that multi-variable declaration is supported by
> for-each and classic for, it does not seem necessary to support expression
> list. I propose to remove it from the parser grammar.
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