RFR: 8333685: Make update-copyright-year script more useful

[Erik Joelsson]

On Tue, 11 Jun 2024 12:32:59 GMT, Thomas Stuefe <stuefe at openjdk.org> wrote:

> Tested on Linux, there it works.
> 
> Note, IIRC, the original unpatched version also worked on MacOS. So, I think the original sed expressions were probably ok. Something about `(${copyright_symbol} )?` perhabs.

Mac has bsd sed by default which does not handle '?'. You would have to express it as `{0,1}` instead to be compatible.

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PR Comment: https://git.openjdk.org/jdk/pull/19605#issuecomment-2160712447