diff --git a/README.md b/README.md
index a715320..b5c2283 100644
--- a/README.md
+++ b/README.md
@@ -72,11 +72,11 @@ end
 Candran is released under the MIT License (see ```LICENSE``` for details).
 
 #### Quick setup
-Install Candran automatically using LuaRocks: ```sudo luarocks install rockspec/candran-0.11.0-1.rockspec```.
+Install Candran automatically using LuaRocks: ```sudo luarocks install rockspec/candran-0.12.0-1.rockspec```.
 
 Or manually install LPegLabel (```luarocks install lpeglabel```, version 1.5 or above), download this repository and use Candran through the scripts in ```bin/``` or use it as a library with the self-contained ```candran.lua```.
 
-You can optionally install lua-linenoise (```luarocks install linenoise```, version 0.9 or above) for an improved REPL. The rockspec will install linenoise by default.
+You can optionally install lua-linenoise (```luarocks install linenoise```, version 0.9 or above) for an improved REPL, and luacheck (```luarocks install luacheck```, version 0.23.0 or above) to be able to use ```cancheck```. Installing Candran using LuaRocks will install linenoise and luacheck by default.
 
 You can register the Candran package searcher in your main Lua file (`require("candran").setup()`) and any subsequent `require` call in your project will automatically search for Candran modules.
 
@@ -87,6 +87,8 @@ Most editors should be able to use their existing Lua support for Candran code.
 	* [SublimeLinter-candran-contrib](https://github.com/Reuh/SublimeLinter-contrib-candran) SublimeLinter plugin for Candran
 * **Atom**: [language-candran](https://atom.io/packages/language-candran) support the full Candran syntax
 
+For linting, if your editor support [luacheck](https://github.com/luarocks/luacheck), you should be able to replace it with ```cancheck``` (in this repository ```bin/cancheck```, or installed automatically if Candran was installed using LuaRocks), which is a wrapper around luacheck that monkey-patch it to support Candran.
+
 The language
 ------------
 ### Syntax additions
@@ -495,7 +497,7 @@ The library can be used standalone through the ```canc``` and ```can``` utility:
 
 	Start a simplisitic Candran REPL.
 
-	If you want a better REPL (autocompletion, history, ability to move the cursor), install lua-linenoise: ```luarocks install linenoise```.
+	If you want a better REPL (autocompletion, history, ability to move the cursor), install lua-linenoise: ```luarocks install linenoise``` (automatically installed if Candran was installed using LuaRocks).
 
 *	````can [options] filename````
 
@@ -509,6 +511,12 @@ The library can be used standalone through the ```canc``` and ```can``` utility:
 
 	Use the ```-h``` or ```-help``` option to display a short help text.
 
+*   ```cancheck```
+
+	Provides a linter and static analyzer with the exact same interface as [luacheck](https://github.com/luarocks/luacheck).
+
+	This requires luacheck: ```luarocks install luacheck``` (automatically installed if Candran was installed through LuaRocks).
+
 ### Library usage
 Candran can also be used as a Lua library:
 ````lua
@@ -534,9 +542,9 @@ The table returned by _require("candran")_ gives you access to:
 
 ##### Compiler & preprocessor
 * ````candran.VERSION````: Candran's version string (e.g. `"0.10.0"`).
-* ````candran.preprocess(code[, options])````: return the Candran code _code_, preprocessed with the _options_ options table.
-* ````candran.compile(code[, options])````: return the Candran code compiled to Lua with the _options_ option table.
-* ````candran.make(code[, options])````: return the Candran code, preprocessed and compiled with the _options_ options table.
+* ````candran.preprocess(code[, options])````: return the Candran code _code_, preprocessed with the _options_ options table; or nil, err in case of error.
+* ````candran.compile(code[, options])````: return the Candran code compiled to Lua with the _options_ option table; or nil, err in case of error.
+* ````candran.make(code[, options])````: return the Candran code, preprocessed and compiled with the _options_ options table; or nil, err in case of error.
 
 ##### Code loading helpers
 * ```candran.loadfile(filepath, env, options)```: Candran equivalent to the Lua 5.3's loadfile funtion. Will rewrite errors by default.
diff --git a/bin/cancheck b/bin/cancheck
index 5354d40..27315a1 100644
--- a/bin/cancheck
+++ b/bin/cancheck
@@ -1,17 +1,60 @@
 #!/usr/bin/env lua
 
+--[[
+Based on luacheck: https://github.com/luarocks/luacheck
+
+The MIT License (MIT)
+
+Copyright (c) 2014 - 2018 Peter Melnichenko
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+]]
+
 -- Monkey patch Luacheck (tested against version 0.23.0) to support Candran files
 local candran = require("candran")
 local util = require("candran.util")
 
+-- set a function upvalues (if several names are given, will go up the upvalue chain)
+local function setupvalue(fn, val, name, ...)
+	for i=1, debug.getinfo(fn, "u").nups do
+		local n, v = debug.getupvalue(fn, i)
+		if n == name then
+			if not ... then
+				debug.setupvalue(fn, i, val)
+			else
+				setupvalue(v, val, ...)
+			end
+		end
+	end
+end
+
+-- escape a string to be used as a pattern
 local function escape(str)
 	return str:gsub("[^%w]", "%%%0")
 end
 
+-- returns a pattern that find start and stop position of a token
 local function pattern(token)
 	return "()"..escape(token).."()"
 end
 
+-- token aliases
 local tokenAlias = {
 	["self"] = { "@", ":" }
 }
@@ -135,18 +178,6 @@ local function format_location(file, location, opts)
    end
    return res
 end
-local function setupvalue(fn, val, name, ...)
-	for i=1, debug.getinfo(fn, "u").nups do
-		local n, v = debug.getupvalue(fn, i)
-		if n == name then
-			if not ... then
-				debug.setupvalue(fn, i, val)
-			else
-				setupvalue(v, val, ...)
-			end
-		end
-	end
-end
 setupvalue(format.builtin_formatters.plain, format_location, "format_event", "format_location")
 
 -- Fix some Luacheck messages and run
diff --git a/rockspec/candran-0.11.0-1.rockspec b/rockspec/candran-0.12.0-1.rockspec
similarity index 87%
rename from rockspec/candran-0.11.0-1.rockspec
rename to rockspec/candran-0.12.0-1.rockspec
index fb04283..6e2588d 100644
--- a/rockspec/candran-0.11.0-1.rockspec
+++ b/rockspec/candran-0.12.0-1.rockspec
@@ -2,7 +2,7 @@ rockspec_format = "3.0"
 
 package = "candran"
 
-version = "0.11.0-1"
+version = "0.12.0-1"
 
 description = {
 	summary = "A simple Lua dialect and preprocessor.",
@@ -19,13 +19,14 @@ description = {
 
 source = {
 	url = "git://github.com/Reuh/candran",
-	tag = "v0.11.0"
+	tag = "v0.12.0"
 }
 
 dependencies = {
 	"lua >= 5.1",
 	"lpeglabel >= 1.5.0",
-	"linenoise >= 0.9"
+	"linenoise >= 0.9",
+	"luacheck >= 0.23.0"
 }
 
 build = {
@@ -34,6 +35,6 @@ build = {
 		candran = "candran.lua"
 	},
 	install = {
-		bin = { "bin/can", "bin/canc" }
+		bin = { "bin/can", "bin/canc", "bin/cancheck" }
 	}
 }