feat: export handling, except exec

src/parser/grammar_advanced.c

@@ -71,7 +71,7 @@ struct ast *parse_prefix(struct lexer_context *ctx)
     if (token->type == TOKEN_ASSIGNMENT_WORD)
     {
         token = POP_TOKEN();
-        return ast_create_assignment(token->data);
+        return ast_create_assignment(token->data, false);
     }
     else if (is_first(*token, RULE_REDIRECTION))
         return parse_redirection(ctx);