[NTG-context] coma in an argument

Dear list, I have this stupid sample: \starttext \def\cA{a, b, c} \doifelse{\env{cA}}{\cA}{equal}{unequal} \stoptext I compile it with: contextjit --arguments="cA=a, b" a.tex Because of the coma, I get this error: check > missing or ungrouped '=' after 'b' in line '29 (15>environment:)' \wait = Is there a way to write the arguments option value, so that I can type "a, b"? Many thanks for your help, Pablo -- http://www.ousia.tk