#62416 Switch to using local references for reusable workflows

[johnbillion]

Trac ticket: https://core.trac.wordpress.org/ticket/62416

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[johnbillion]

@desrosj Another consideration. The current syntax means that workflows in older branches will always use the latest reusable workflow from the trunk branch. For example, the 6.4 branch uses the current workflow from trunk, not the workflow as it was at 6.4.

Is this a feature or a bug?

[desrosj]

Ah, yes. This is absolutely a feature. We only need to update the workflow file once this way. See https://core.trac.wordpress.org/ticket/61213. Otherwise, we need to periodically backport fixes to all supported branches, and this is a large undertaking.

[desrosj]

One way around this could be that after branching a release, we update all workflows to use the @trunk syntax instead. That allows trunk to use the local references for easier testing, but ensures the same benefits for older branches.

[johnbillion]

That sounds reasonable. Would need to be added to the post release checklist.