RFR: Clarifications and X-wnf label

[David Holmes]

On Fri, 12 Jan 2024 16:52:41 GMT, Jesper Wilhelmsson <jwilhelm at openjdk.org> wrote:

> Fixed a bug, cleaned up a few JBS field references, and added the X-wnf label to the dictionary.

src/guide/jbs-jdk-bug-system.md line 352:

> 350:       The [Affects Version/s]{.jbs-field} field is used to indicate the releases where an issue has been seen - it's implied that the issue is also applicable to newer releases. Where this isn't the case - for instance a bug in code that was removed in *(Rel)* - then use *(Rel)*[-na]{.jbs-label} to indicate this. Note that there should only be **one** *(Rel)*[-na]{.jbs-label} label on any JBS issue.
> 351: 
> 352:       Don't use the label to indicate that a bug isn't relevant to an earlier release. If a bug is not present in an earlier release you can use [Introduced in Version]{.jbs-field} to indicate where the bug was introduced. If a bug is present in an earlier release, but shouldn't be fixed there, use [*(Rel)*[-wnf]{.jbs-label}]{#rel-wnf}.

But from a backporting perspective I, for example, would want to know if the issue is present in 8u, and I can easily test that. But I don't know if the issue in present in 9 or 10 and I would not want to waste time testing those versions just so I can set the "Introduced In" field. It makes more sense to me, to use `8-na` to indicate that JDK 8 has been checked and has no issue. Alternatively, the guide should be directing me to perhaps create an explicit backport record for 8u and close it as "Not an Issue".

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PR Review Comment: https://git.openjdk.org/guide/pull/118#discussion_r1451875759