RFR: 596: Allow short-hand syntax for /label command

[Erik Joelsson]

On Tue, 7 Dec 2021 08:27:36 GMT, Guoxiong Li <gli at openjdk.org> wrote:

> Hi all,
> 
> This patch adds the short-hand syntax for `/label` command. The short-hand syntax makes the users easily add and remove the labels in one comment.
> 
> Some example:
> 
> Add a label: `/label +labelName`
> Remove a label: `/label -labelName`
> Mixed: `/label +labelName, -labelName2`
> Mixed: `/label labelName, +labelName2, -labelName3`
> 
> 
> And the test cases are added.
> 
> Thanks for taking the time to review.
> 
> Best Regards,
> -- Guoxiong

Marked as reviewed by erikj (Lead).

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PR: https://git.openjdk.java.net/skara/pull/1255