Need a JQL query for "fixVersion=a while status in ('b')" or "status in ('b') while fixVersion=a"

Question

If JQL does not currently support "while" function, I would like to request it be considered.

Al Genzlinger · Answer

and During is not a valid operation for non-date criteria:

fixVersion was in ("a") during status was in ("b") and fixVersion  != a

Al Genzlinger · Answer

The following query is inadequate because it does not satisfy the simultaneous requirement:

fixVersion was in ("a") AND status was in ("b") and fixVersion  != a