This is now the best Lua logging library ever made.

log.lua

@@ -1,11 +1,8 @@
-local stored_messages = {}
-local display_levels = {}
-local enable_logging = true
-local message_limit = math.huge
-
 -- USAGE:
 --   -- set arbitrary log levels to be printed immediately
---   log{ info = true, warning = true, }
+--   log{ info = true, warning = true, ducksauce = true, }
+--   -- disable storage of messages depending on log level
+--   log{ error = false, verbose = false, }
 --   -- send anything (except nil) to a log level
 --   log("bacom", true, "text", 5, function() end, {})
 --   -- print all messages saved at a particular log level
@@ -16,11 +13,20 @@ local message_limit = math.huge
 --   log(50) -- warning: reaching large limits makes logging expensive
 --   -- do anything to the stored messages (this example deletes them all)
 --  log(function(messages) return {} end)
+--  -- check if a log level is being displayed
+--  if log.arbitrary_exit then log("arbitrary_exit") os.exit(1) end
 
-return function(options, ...)
+local microlog = {} -- display_levels are stored directly here
+local stored_messages = {}
+local enable_logging = true
+local message_limit = math.huge
+
+return setmetatable(microlog, {
+  __call = function(options, ...)
     local options_type = type(options)
 
     if (options_type == "string") and enable_logging then
+      if microlog[options] == false then return end
       if not stored_messages[options] then stored_messages[options] = {} end
       local message_table = stored_messages[options]
 
@@ -41,13 +47,13 @@ return function(options, ...)
         -- store message (and print if in display_levels)
         message_table[#message_table + 1] = current_message
         if #message_table > message_limit then table.remove(message_table, 1) end
-      if display_levels[options] then print(current_message) end
+        if microlog[options] then print(current_message) end
       end
 
     -- set display_levels
     elseif options_type == "table" then
       for k,v in pairs(options) do
-      display_levels[k] = v
+        microlog[k] = v
       end
 
     elseif options_type == "number" then
@@ -72,4 +78,5 @@ return function(options, ...)
       local result = options(stored_messages)
       if type(result) == "table" then stored_messages = result end
     end
-end
+  end
+})