Fixed some issues where pretty would create new global variables.

analyze_structure.lua

@@ -1,7 +1,7 @@
 
 local TABLE_TYPE
 do
-    local thispath = ... and select('1', ...):match('.+%.') or ''
+    local thispath, was_loaded =  ... and select('1', ...):match('.+%.') or ''
     was_loaded, TABLE_TYPE         =  pcall(require, thispath..'table_type')
     assert(was_loaded, '[pretty]: Could not load vital library: table_type')
 end

pretty.lua

@@ -300,7 +300,7 @@ local TABLE_TYPE_TO_PAIR_FORMAT = {
 
 -- Formatting tables
 
-function format_table (t, depth, l)
+local function format_table (t, depth, l)
     -- TODO: Add more nuanced formatting.
 
     -- Error Checking

test/tests.lua

@@ -2,6 +2,7 @@
 package.path = package.path .. ';./test/?.lua;./src/?.lua'
 
 local TEST_SUITE = require("TestSuite").new('pretty')
+      TEST_SUITE:enableStrictGlobal()
       TEST_SUITE:addModules('test/test_*')
 --      TEST_SUITE:generateRequireSubmodule 'require'
       TEST_SUITE:setOptions(...)