--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/spec/util_jsonpointer_spec.lua	Sun May 08 18:06:41 2022 +0200
@@ -0,0 +1,38 @@
+describe("util.jsonpointer", function()
+	local json, jp;
+	setup(function()
+		json = require "util.json";
+		jp = require "util.jsonpointer";
+	end)
+	describe("resolve()", function()
+		local example;
+		setup(function()
+			example = json.decode([[{
+				"foo": ["bar", "baz"],
+				"": 0,
+				"a/b": 1,
+				"c%d": 2,
+				"e^f": 3,
+				"g|h": 4,
+				"i\\j": 5,
+				"k\"l": 6,
+				" ": 7,
+				"m~n": 8
+		 }]])
+		end)
+		it("works", function()
+			assert.same(example, jp.resolve(example, ""));
+			assert.same({ "bar", "baz" }, jp.resolve(example, "/foo"));
+			assert.same("bar", jp.resolve(example, "/foo/0"));
+			assert.same(0, jp.resolve(example, "/"));
+			assert.same(1, jp.resolve(example, "/a~1b"));
+			assert.same(2, jp.resolve(example, "/c%d"));
+			assert.same(3, jp.resolve(example, "/e^f"));
+			assert.same(4, jp.resolve(example, "/g|h"));
+			assert.same(5, jp.resolve(example, "/i\\j"));
+			assert.same(6, jp.resolve(example, "/k\"l"));
+			assert.same(7, jp.resolve(example, "/ "));
+			assert.same(8, jp.resolve(example, "/m~0n"));
+		end)
+	end)
+end)

--- a/teal-src/util/jsonpointer.tl	Sat May 07 13:10:27 2022 +0200
+++ b/teal-src/util/jsonpointer.tl	Sun May 08 18:06:41 2022 +0200
@@ -24,7 +24,7 @@
 		elseif idx is integer then
 			local i = tonumber(token)
 			if token == "-" then i = #ref + 1 end
-			new_ref = ref[i]
+			new_ref = ref[i+1]
 		else
 			return nil, "invalid-table"
 		end

--- a/util/jsonpointer.lua	Sat May 07 13:10:27 2022 +0200
+++ b/util/jsonpointer.lua	Sun May 08 18:06:41 2022 +0200
@@ -20,7 +20,7 @@
 			if token == "-" then
 				i = #ref + 1
 			end
-			new_ref = ref[i]
+			new_ref = ref[i + 1]
 		else
 			return nil, "invalid-table"
 		end