diff --git a/parser/src/passes.c b/parser/src/passes.c
index 03a04a47..ab8445d9 100644
--- a/parser/src/passes.c
+++ b/parser/src/passes.c
@@ -6,7 +6,7 @@
 /*   By: maiboyer <maiboyer@student.42.fr>          +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2024/10/02 18:41:16 by maiboyer          #+#    #+#             */
-/*   Updated: 2024/10/06 14:43:56 by rparodi          ###   ########.fr       */
+/*   Updated: 2024/10/06 14:53:20 by rparodi          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -56,7 +56,7 @@ static const struct s_ts_pass_def	g_ts_passes[] = {\
 	{ts_double_lcarret, "double lcarret => dlcarret"}, \
 	{ts_double_rcarret, "double rcarrer => drcarret"}, \
 	// there should be an ts_fold_arith here
-	{ts_split_paren, "split double parenthesis"}, \
+{ts_split_paren, "split double parenthesis"}, \
 	{ts_fold_redir, "fold redir+argument"}, \
 };
 
diff --git a/parser/src/passes/fold_double_quote.c b/parser/src/passes/fold_double_quote.c
new file mode 100644
index 00000000..565a9dbc
--- /dev/null
+++ b/parser/src/passes/fold_double_quote.c
@@ -0,0 +1,65 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   fold_double_quote.c                                :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: maiboyer <maiboyer@student.42.fr>          +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/10/02 19:04:32 by maiboyer          #+#    #+#             */
+/*   Updated: 2024/10/06 15:13:45 by rparodi          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "me/string/string.h"
+#include "parser/passes.h"
+#include "me/types.h"
+#include "me/vec/vec_token.h"
+#include "parser/token.h"
+#include "stdbool.h"
+
+/// This is a sample pass
+///
+/// There is a few rules the rest of the tokenizer machinery assumes
+/// theses function follows:
+/// 	- the input vec WILL be freed when the function return, even in
+/// 		case of error
+/// 	- the output vector isn't populated if the function returns an error,
+/// 		thus it shouldn't be freed in case of error
+/// 	- the output tokens may not be direct copy of the input tokens,
+/// 		but need to be cloned (different allocations for stuff)
+
+bool	_type_extansion(enum e_token type)
+{
+	if (type == TOK_DOLLAR || type == TOK_DQUOTE || type == TOK_SQUOTE)
+		return (true);
+	return (false);
+}
+
+t_error	ts_fold_double_quote(t_vec_token input, t_vec_token *output)
+{
+	t_vec_token	out;
+	t_usize		i;
+	t_usize		j;
+	t_token		tmp;
+
+	i = 0;
+	out = vec_token_new(input.len, token_free);
+	while (i < input.len)
+	{
+		if (token_is_noquote(input.buffer[i].type))
+		{
+			j = 0;
+			tmp = token_new(TOK_NQUOTE);
+			while (i + j < input.len \
+					&& token_is_noquote(input.buffer[i + j].type))
+				if (type_extansion(input.buffer->type))
+				string_push(&tmp.string, input.buffer[i + j++].subtokens.buffer);
+			vec_token_push(&out, tmp);
+			i += j;
+		}
+		else
+			vec_token_push(&out, token_clone(&input.buffer[i++]));
+	}
+	vec_token_free(input);
+	return (*output = out, NO_ERROR);
+}