jamescasbon/PyVCF — pull request #166 by martijnvermaat (2014-06-25 20:50:35+00:00)
Title: Don't crash when FORMAT is set to the missing value (.)

It is not valid according to the spec, but issue #164 shows a VCF file where the FORMAT column contains just a dot character. We have no way of interpreting the subsequent genotype columns in that case, so this patch ignores them.