config: copyright correction logic: handle year-to-year ranges without trailing authorship info

[jayaddison]

Feature or Bugfix

• Bugfix

Purpose

• Allow concise, year-to-year copyright declarations such as 1970-1971 (with no trailing author name / info).

Detail

• Use a string slice when performing a conditional check on trailing content, allowing an empty string to be returned instead of an array access error exception being raised.

Relates

• Resolves copyright accepts different values when SOURCE_DATE_EPOCH is/is not in the environment #11913.

[picnixz]

I think we are good with this one right?

[jayaddison]

I think we are good with this one right?

Good from my point-of-view (as author, admittedly). I'll open a separate ticket/discussion within a few days to ask about the (existing) ambiguity around year-only copyright entries.

[picnixz]

Ok, then I think we can merge this one.

[picnixz]

Thank you