{
  "valid": [
    "description ~ empty",
    "description !~ empty",
    "description ~ null",
    "description !~ null",
    "description ~ a",
    "description !~ a",
    "description ~ \"a*\"",
    "description !~ \"a*\"",
    "description ~ 0",
    "description !~ 0",
    "description ~ -5",
    "description !~ -5",
    "comment ~ currentUser()",
    "comment !~ currentUser()"
  ],
  "invalid": [
    "description ~",
    "description !~",
    "description ! ~ empty",
    "description ~ (a, b)",
    "description !~ (a, b)",
    "description ~ a after -1w",
    "description !~ a after -1w",
    "description ~ a before -1w",
    "description !~ a before -1w",
    "description ~ a on -1w",
    "description !~ a on -1w",
    "description ~ a during (-1w, now())",
    "description !~ a during (-1w, now())",
    "description ~ a by b",
    "description !~ a by b",
    "description ~ a from b",
    "description !~ a from b",
    "description ~ a to b",
    "description !~ a to b"
  ]
}