Parse identifiers with "bis" suffix

[mico]

I found some identifiers with "bis" suffix:

• ITU-T X.50bis (https://www.itu.int/rec/T-REC-X.50bis-198811-I/en)
• ITU-T V.8bis (https://www.itu.int/rec/T-REC-V.8bis/en)
• ITU-T V.31bis (https://www.itu.int/rec/T-REC-V.31bis-198811-I)

There are more, this is just few of them. The identifiers I looked into mentioned that it's "Extract from the Blue Book", maybe "bis" related to "Blue Book".

[ronaldtse]

Actually “bis” means “draft for next version”, so V.8 bis means the next version of V.8, which may or may not retain the name “V.8”. The IETF also uses this practice.

[opoudjis]

bis is Latin for "twice", and it is used in numbering like A is: in general 8 bis means "8A, number I've had to slot in between 8 and 9". You can keep going with Latin times adverbs— ter, quater, quinquies ... but we won't :)

[mico]

bis is Latin for "twice", and it is used in numbering like A is: in general 8 bis means "8A, number I've had to slot in between 8 and 9". You can keep going with Latin times adverbs— ter, quater, quinquies ... but we won't :)

@ronaldtse should we convert "bis" to "A"?

[ronaldtse]

@mico we have to keep the “bis” as “bis”. Whatever the suffix is, we have to keep the original.

[opoudjis]

Yeah, I was only mentioning 8A as a more familiar way of doing what 8 bis does.