builtin unset + fixed builtin export

srcs/parsing/expansions/expand_token.c

@@ -6,7 +6,7 @@
 /*   By: lperrey <lperrey@student.42.fr>            +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2021/11/07 02:01:33 by lperrey           #+#    #+#             */
-/*   Updated: 2021/11/30 18:35:44 by lperrey          ###   ########.fr       */
+/*   Updated: 2021/12/05 18:14:24 by lperrey          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -105,3 +105,10 @@ static t_list	*ret_parameter_expansion(char *content, int *i)
 		return (ft_retp_free(NULL, expand, free));
 	return (expand);
 }
+
+/*
+environment variables must be POSIX NAME :
+	3.235 Name
+https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap03.html
+#tag_03_235
+*/