fix: check if no command passed to exec (#310)

* fix: check if no command passed to exec

* docs: add exec fixes

* chore: remove extra space

CHANGELOG.md

@@ -30,6 +30,7 @@ hilbish.run('wc -l', {
 
 ### Fixed
 - Fix ansi attributes causing issues with text when cut off in greenhouse
+- `exec` command should return if no arg presented
 
 ## [2.2.3] - 2024-04-27
 ### Fixed

nature/commands/exec.lua

@@ -1,5 +1,8 @@
 local commander = require 'commander'
 
 commander.register('exec', function(args)
+	if #args == 0 then
+		return
+	end
 	hilbish.exec(args[1])
 end)