RFR: 2170: Warn on trailing period in PR titles

[Zhao Song]

On Tue, 16 Apr 2024 08:28:37 GMT, Magnus Ihse Bursie <ihse at openjdk.org> wrote:

> I looked at the code to try to answer my own question, but could not find out an easy answer, so I'll say it out loud instead:
> 
> How do you make it so that this is a warning only, and not a blocking error?

Hi Magnus, I haven't finished this patch... So it's still in the draft state. I will finish it today.

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PR Comment: https://git.openjdk.org/skara/pull/1638#issuecomment-2059378654