Quoting Section 2.1 of the spec:
“Any sequence of characters is a valid CommonMark document.”
So a tool to tell you if you have a valid CommonMark
document would be trivial. Of course, the meaning of
the document might not be what you expect, but to test
for this you’d need a tool that takes as input both
the document and its intended interpretation.
Rohit Patnaik noreply@talk.commonmark.org writes: