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Published 20 hours ago • verified publisher icon oasis-open

Fix exists grammar

Open mikecl24 opened this issue 1 year ago • 0 comments

The standard states that:

A Comparison Operator MAY be preceded by the modifier NOT, in which case the resultant Comparison Expression is logically negated.

and the EXISTS set operator is defined under the comparison operators (together with ISSUBSET and ISSUPERSET under the set operators). I'm guessing the specification for the not syntax with set operators was missed when exists was added with stix 2.1 which introduced it.

This PR should make set operators consistent with the spec.

Closes #157

mikecl24 avatar Oct 01 '22 19:10 mikecl24