old GNU license

[armijnhemel]

Description

A variant of #4076 (without the Emacs references) that is currently not recognized correctly:

https://sources.debian.org/src/xxgdb/1.12-9.4potato/regex.h/

Reported by @LeChasseur

[armijnhemel]

It seems that this one is actually a version of the 1988 version (it has 5 clauses, like the 1988 version, while #4076 has 4 clauses). Whoever wrote it didn't update the years in the header though....

[Avan2021]

Hi, I would like to contribute to aboutcode and ask if you can assign this issue to me. I want to contribute as much as I can and I am still a learner so I would appreciate it if you could help me out if I get stuck anywhere.