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Use case
When a comment is added to an issue, mentioning one or multiple issue keys, those issues are linked to the current issue.
Issue Event
Create a new rule and name it appropriately.
Providing a description will help you to identify what the rule does but this step is optional.
Add a trigger → Issue Event → Issue Commented
No further configuration needed. The automation rule is triggered every time an issue is being transitioned.
Boolean Condition
Add a Condition → Boolean Condition
Expression*
Use the following parser expression:
findPattern(%{trigger.issue.lastComment},"([A-Z][A-Z0-9]+)-\\d+") !~ null
Create Issue Link
Add and configure the Create Issue Link action.
Issue link type*: Choose relates to (Relates)
Issue selection*: Choose Issue List Expression
Parser expression*:
issueKeysToIssueList(toString(findPattern(%{trigger.issue.lastComment},"([A-Z][A-Z0-9]+)-\\d+")))
Activate the rule by clicking on the Activate rule button →
Screencast
This is how the configuration above should look on your screen
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