Lua: use proper interface functions to access the CommonState.

- The `PANDOC_STATE` is no longer a userdata object, but a table that
  behaves like the old object.

- Log messages in `PANDOC_STATE.log` are now in temporal order.

2 files changed, 5 insertions, 5 deletions

diff --git a/pandoc-lua-engine/test/lua/module/globals.lua b/pandoc-lua-engine/test/lua/module/globals.lua
index 4df133e46..11b003981 100644
--- a/pandoc-lua-engine/test/lua/module/globals.lua
+++ b/pandoc-lua-engine/test/lua/module/globals.lua
@@ -110,8 +110,8 @@ return {
   },
 
   group 'PANDOC_STATE' {
-    test('is a userdata object', function ()
-      assert.are_equal(type(PANDOC_STATE), 'userdata')
+    test('is a table object', function ()
+      assert.are_equal(type(PANDOC_STATE), 'table')
     end),
     test('has property "input_files"', function ()
       assert.are_equal(type(PANDOC_STATE.input_files), 'table')
diff --git a/pandoc-lua-engine/test/lua/module/pandoc-log.lua b/pandoc-lua-engine/test/lua/module/pandoc-log.lua
index 923f03cd9..1daf6240d 100644
--- a/pandoc-lua-engine/test/lua/module/pandoc-log.lua
+++ b/pandoc-lua-engine/test/lua/module/pandoc-log.lua
@@ -22,13 +22,13 @@ return {
     end),
     test('reports a warning', function ()
       log.info('info test')
-      local msg = json.decode(json.encode(PANDOC_STATE.log[1]))
+      local msg = json.decode(json.encode(PANDOC_STATE.log:at(-1)))
       assert.are_equal(msg.message, 'info test')
       assert.are_equal(msg.type, 'ScriptingInfo')
     end),
     test('info includes the correct number', function ()
       log.info('line number test')
-      local msg = json.decode(json.encode(PANDOC_STATE.log[1]))
+      local msg = json.decode(json.encode(PANDOC_STATE.log:at(-1)))
       -- THIS NEEDS UPDATING if lines above are shifted.
       assert.are_equal(msg.line, 30)
     end),
@@ -40,7 +40,7 @@ return {
     end),
     test('reports a warning', function ()
       log.warn('testing')
-      local msg = json.decode(json.encode(PANDOC_STATE.log[1]))
+      local msg = json.decode(json.encode(PANDOC_STATE.log:at(-1)))
       assert.are_equal(msg.message, 'testing')
       assert.are_equal(msg.type, 'ScriptingWarning')
     end),