text: --jsonpath io
  
  select ''::jsonpath;
  select '$'::jsonpath;
  select 'strict $'::jsonpath;
  select 'lax $'::jsonpath;
  select '$.a'::jsonpath;
  select '$.a.v'::jsonpath;
  select '$.a.*'::jsonpath;
  select '$.*[*]'::jsonpath;
  select '$.a[*]'::jsonpath;
  select '$.a[*][*]'::jsonpath;
  select '$[*]'::jsonpath;
  select '$[0]'::jsonpath;
  select '$[*][0]'::jsonpath;
  select '$[*].a'::jsonpath;
  select '$[*][0].a.b'::jsonpath;
  select '$.a.**.b'::jsonpath;
  select '$.a.**{2}.b'::jsonpath;
  select '$.a.**{2 to 2}.b'::jsonpath;
  select '$.a.**{2 to 5}.b'::jsonpath;
  select '$.a.**{0 to 5}.b'::jsonpath;
  select '$.a.**{5 to last}.b'::jsonpath;
  select '$.a.**{last}.b'::jsonpath;
  select '$.a.**{last to 5}.b'::jsonpath;
  select '$+1'::jsonpath;
  select '$-1'::jsonpath;
  select '$--+1'::jsonpath;
  select '$.a/+-1'::jsonpath;
  select '1 * 2 + 4 % -3 != false'::jsonpath;
  
  select '"\b\f\r\n\t\v\"\''\\"'::jsonpath;
  select '"\x50\u0067\u{53}\u{051}\u{00004C}"'::jsonpath;
  select '$.foo\x50\u0067\u{53}\u{051}\u{00004C}\t\"bar'::jsonpath;
  select '"\z"'::jsonpath;  -- unrecognized escape is just the literal char
  
  select '$.g ? ($.a == 1)'::jsonpath;
  select '$.g ? (@ == 1)'::jsonpath;
  select '$.g ? (@.a == 1)'::jsonpath;
  select '$.g ? (@.a == 1 || @.a == 4)'::jsonpath;
  select '$.g ? (@.a == 1 && @.a == 4)'::jsonpath;
  select '$.g ? (@.a == 1 || @.a == 4 && @.b == 7)'::jsonpath;
  select '$.g ? (@.a == 1 || !(@.a == 4) && @.b == 7)'::jsonpath;
  select '$.g ? (@.a == 1 || !(@.x >= 123 || @.a == 4) && @.b == 7)'::jsonpath;
  select '$.g ? (@.x >= @[*]?(@.a > "abc"))'::jsonpath;
  select '$.g ? ((@.x >= 123 || @.a == 4) is unknown)'::jsonpath;
  select '$.g ? (exists (@.x))'::jsonpath;
  select '$.g ? (exists (@.x ? (@ == 14)))'::jsonpath;
  select '$.g ? ((@.x >= 123 || @.a == 4) && exists (@.x ? (@ == 14)))'::jsonpath;
  select '$.g ? (+@.x >= +-(+@.a + 2))'::jsonpath;
  
  select '$a'::jsonpath;
  select '$a.b'::jsonpath;
  select '$a[*]'::jsonpath;
  select '$.g ? (@.zip == $zip)'::jsonpath;
  select '$.a[1,2, 3 to 16]'::jsonpath;
  select '$.a[$a + 1, ($b[*]) to -($[0] * 2)]'::jsonpath;
  select '$.a[$.a.size() - 3]'::jsonpath;
  select 'last'::jsonpath;
  select '"last"'::jsonpath;
  select '$.last'::jsonpath;
  select '$ ? (last > 0)'::jsonpath;
  select '$[last]'::jsonpath;
  select '$[$[0] ? (last > 0)]'::jsonpath;
  
  select 'null.type()'::jsonpath;
  select '1.type()'::jsonpath;
  select '(1).type()'::jsonpath;
  select '1.2.type()'::jsonpath;
  select '"aaa".type()'::jsonpath;
  select 'true.type()'::jsonpath;
  select '$.double().floor().ceiling().abs()'::jsonpath;
  select '$.keyvalue().key'::jsonpath;
  
  select '$ ? (@ starts with "abc")'::jsonpath;
  select '$ ? (@ starts with $var)'::jsonpath;
  
  select '$ ? (@ like_regex "(invalid pattern")'::jsonpath;
  select '$ ? (@ like_regex "pattern")'::jsonpath;
  select '$ ? (@ like_regex "pattern" flag "")'::jsonpath;
  select '$ ? (@ like_regex "pattern" flag "i")'::jsonpath;
  select '$ ? (@ like_regex "pattern" flag "is")'::jsonpath;
  select '$ ? (@ like_regex "pattern" flag "isim")'::jsonpath;
  select '$ ? (@ like_regex "pattern" flag "xsms")'::jsonpath;
  select '$ ? (@ like_regex "pattern" flag "q")'::jsonpath;
  select '$ ? (@ like_regex "pattern" flag "iq")'::jsonpath;
  select '$ ? (@ like_regex "pattern" flag "smixq")'::jsonpath;
  select '$ ? (@ like_regex "pattern" flag "a")'::jsonpath;
  
  select '$ < 1'::jsonpath;
  select '($ < 1) || $.a.b <= $x'::jsonpath;
  select '@ + 1'::jsonpath;
  
  select '($).a.b'::jsonpath;
  select '($.a.b).c.d'::jsonpath;
  select '($.a.b + -$.x.y).c.d'::jsonpath;
  select '(-+$.a.b).c.d'::jsonpath;
  select '1 + ($.a.b + 2).c.d'::jsonpath;
  select '1 + ($.a.b > 2).c.d'::jsonpath;
  select '($)'::jsonpath;
  select '(($))'::jsonpath;
  select '((($ + 1)).a + ((2)).b ? ((((@ > 1)) || (exists(@.c)))))'::jsonpath;
  
  select '$ ? (@.a < 1)'::jsonpath;
  select '$ ? (@.a < -1)'::jsonpath;
  select '$ ? (@.a < +1)'::jsonpath;
  select '$ ? (@.a < .1)'::jsonpath;
  select '$ ? (@.a < -.1)'::jsonpath;
  select '$ ? (@.a < +.1)'::jsonpath;
  select '$ ? (@.a < 0.1)'::jsonpath;
  select '$ ? (@.a < -0.1)'::jsonpath;
  select '$ ? (@.a < +0.1)'::jsonpath;
  select '$ ? (@.a < 10.1)'::jsonpath;
  select '$ ? (@.a < -10.1)'::jsonpath;
  select '$ ? (@.a < +10.1)'::jsonpath;
  select '$ ? (@.a < 1e1)'::jsonpath;
  select '$ ? (@.a < -1e1)'::jsonpath;
  select '$ ? (@.a < +1e1)'::jsonpath;
  select '$ ? (@.a < .1e1)'::jsonpath;
  select '$ ? (@.a < -.1e1)'::jsonpath;
  select '$ ? (@.a < +.1e1)'::jsonpath;
  select '$ ? (@.a < 0.1e1)'::jsonpath;
  select '$ ? (@.a < -0.1e1)'::jsonpath;
  select '$ ? (@.a < +0.1e1)'::jsonpath;
  select '$ ? (@.a < 10.1e1)'::jsonpath;
  select '$ ? (@.a < -10.1e1)'::jsonpath;
  select '$ ? (@.a < +10.1e1)'::jsonpath;
  select '$ ? (@.a < 1e-1)'::jsonpath;
  select '$ ? (@.a < -1e-1)'::jsonpath;
  select '$ ? (@.a < +1e-1)'::jsonpath;
  select '$ ? (@.a < .1e-1)'::jsonpath;
  select '$ ? (@.a < -.1e-1)'::jsonpath;
  select '$ ? (@.a < +.1e-1)'::jsonpath;
  select '$ ? (@.a < 0.1e-1)'::jsonpath;
  select '$ ? (@.a < -0.1e-1)'::jsonpath;
  select '$ ? (@.a < +0.1e-1)'::jsonpath;
  select '$ ? (@.a < 10.1e-1)'::jsonpath;
  select '$ ? (@.a < -10.1e-1)'::jsonpath;
  select '$ ? (@.a < +10.1e-1)'::jsonpath;
  select '$ ? (@.a < 1e+1)'::jsonpath;
  select '$ ? (@.a < -1e+1)'::jsonpath;
  select '$ ? (@.a < +1e+1)'::jsonpath;
  select '$ ? (@.a < .1e+1)'::jsonpath;
  select '$ ? (@.a < -.1e+1)'::jsonpath;
  select '$ ? (@.a < +.1e+1)'::jsonpath;
  select '$ ? (@.a < 0.1e+1)'::jsonpath;
  select '$ ? (@.a < -0.1e+1)'::jsonpath;
  select '$ ? (@.a < +0.1e+1)'::jsonpath;
  select '$ ? (@.a < 10.1e+1)'::jsonpath;
  select '$ ? (@.a < -10.1e+1)'::jsonpath;
  select '$ ? (@.a < +10.1e+1)'::jsonpath;
  
  select '0'::jsonpath;
  select '00'::jsonpath;
  select '0.0'::jsonpath;
  select '0.000'::jsonpath;
  select '0.000e1'::jsonpath;
  select '0.000e2'::jsonpath;
  select '0.000e3'::jsonpath;
  select '0.0010'::jsonpath;
  select '0.0010e-1'::jsonpath;
  select '0.0010e+1'::jsonpath;
  select '0.0010e+2'::jsonpath;
  select '1e'::jsonpath;
  select '1.e'::jsonpath;
  select '1.2e'::jsonpath;
  select '1.2.e'::jsonpath;
  select '(1.2).e'::jsonpath;
  select '1e3'::jsonpath;
  select '1.e3'::jsonpath;
  select '1.e3.e'::jsonpath;
  select '1.e3.e4'::jsonpath;
  select '1.2e3'::jsonpath;
  select '1.2.e3'::jsonpath;
  select '(1.2).e3'::jsonpath;
  select '1..e'::jsonpath;
  select '1..e3'::jsonpath;
  select '(1.).e'::jsonpath;
  select '(1.).e3'::jsonpath;
  