RNC field not comma-separated

[holtgrewe]

The FORMAT/RNC field is encoded as a string of length two rather than a list of two caracters.

IOW, it is:

GT:RNC      ./.:II     1/1:15:1,14:1:16,4,0:..

But (arguably?) should be:

GT:RNC      ./.:I,I     1/1:15:1,14:1:16,4,0:.,.

What are your thoughts?

Also see

• Fixed-length Character fields zaeleus/noodles#235
• Multiple characters are not a string... or are they? samtools/hts-specs#631

[williamrowell]

Commenting on this to second it.

This field fails validation with vcf_validator:

Error: Sample #1, field RNC does not match the meta specification Number=2 (expected 2 value(s)). This occurs 4754484 time(s), first time in line 222.