(URGENT) Document type appears after "ISO" with slash unless there are copublishers

[ronaldtse]

Correct behavior:

• If there are copublishers, copublishers are separated by slashes, and the document type appears after the copublishers and a space. (e.g. "ISO/IEC WD 27001")
• If there are no copublishers, the document type is placed after a slash after "ISO". (e.g. "ISO/WD 123")

ISO WD 1000-1.3

We are not delimiting ISO from status with a slash.

This is wrong. It should have been "ISO/WD 1000-1.3".

ISO/IEC/IEEE TR 1000-1-1:2001

• We are not delimiting publishers from document type with a slash.

This is correct. The previous ISO/IEC/IEEE/TR pattern is wrong.

Originally posted by @ronaldtse in #102 (comment)

[mico]

@opoudjis could you help to reproduce this bug?
We already have a test for that case: https://github.com/metanorma/pubid-iso/blob/main/spec/pubid_iso/identifier_spec.rb#L767
but it didn't fail.

[ronaldtse]

This is fixed in #115.