ansible: ignore _ansible parameters and don't emit trailing newlines

src/ansible.lua

@@ -19,10 +19,8 @@ end
 local function split(str, delimiter)
 	local toks = {}
 
-	local i = 0
 	for tok in string.gmatch(str, "[^".. delimiter .. "]+") do
-		toks[i] = tok
+		toks[#toks + 1] = tok
-		i = i + 1
 	end
 
 	return toks
@@ -67,13 +65,17 @@ local function canonicalize(params, spec)
 	for k,v in pairs(params) do
 		local desc = findspec(k, spec)
 		if not desc then
+			-- ignore _ansible parameters
+			if 1 ~= string.find(k, "_ansible") then
 				return nil, "no such parameter " .. k
 			end
+		else
 			if copy[desc['name']] then
 				return nil, "duplicate parameter " .. desc['name']
 			end
 			copy[desc['name']] = v
 		end
+	end
 
 	params = copy
 
@@ -346,7 +348,7 @@ function Ansible:fail_json(kwargs)
 		kwargs['invocations'] = {module_args=self.params}
 	end
 
-	print(json.encode(kwargs, {indent=true}))
+	io.write(json.encode(kwargs))
 	os.exit(1)
 end
 
@@ -359,7 +361,7 @@ function Ansible:exit_json(kwargs)
 		kwargs['invocations'] = {module_args=self:get_params()}
 	end
 
-	print(json.encode(kwargs, {indent=true}))
+	io.write(json.encode(kwargs))
 	os.exit(0)
 end