fix(commands/cd): set oldpwd when cd-ing with no args (fixes #225)

nature/commands/cd.lua

@@ -8,14 +8,14 @@ commander.register('cd', function (args)
 	if #args > 1 then
 		print("cd: too many arguments")
 		return 1
-	elseif #args > 0 then
+	end
-		local path = args[1]:gsub('$%$','\0'):gsub('${([%w_]+)}', os.getenv)
-		:gsub('$([%w_]+)', os.getenv):gsub('%z','$'):gsub('^%s*(.-)%s*$', '%1')
 
+	local path = args[1] and args[1] or hilbish.home
 	if path == '-' then
 		path = dirs.old
 		print(path)
 	end
+
 	dirs.setOld(hilbish.cwd())
 	dirs.push(path)
 
@@ -25,11 +25,4 @@ commander.register('cd', function (args)
 		return 1
 	end
 	bait.throw('cd', path)
-
-		return
-	end
-	fs.cd(hilbish.home)
-	bait.throw('cd', hilbish.home)
-
-	dirs.push(hilbish.home)
 end)