RFR: 1239: The backport command bot replies multiple `@username` unexpectedly

[Guoxiong Li]

On Wed, 10 Nov 2021 11:42:25 GMT, Magnus Ihse Bursie <ihse at openjdk.org> wrote:

>> Hi all,
>> 
>> After [SKARA-1201](https://bugs.openjdk.java.net/browse/SKARA-1201), the backport command bot will reply multiple `@username` unexpectedly when we use command `/backport branch-name`.
>> 
>> Please see [this link](https://github.com/openjdk/jdk/commit/2b02b6f513b062261195ca1edd059d16abb7bec6) for the detailed messages. The bot replied two `@lgxbslgx` unexpectedly.
>> 
>> This patch fixes the issue and adds the corresponding test cases.
>> 
>> Thanks for taking the time to review.
>> 
>> Best Regards,
>> -- Guoxiong
>
> LGTM

@magicus thanks for your review. Could I get your help to sponsor this patch?

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PR: https://git.openjdk.java.net/skara/pull/1238