diff --git a/src/executing/here_doc/here_doc.c b/src/executing/here_doc/here_doc.c
index c1c8d25..eb8582e 100644
--- a/src/executing/here_doc/here_doc.c
+++ b/src/executing/here_doc/here_doc.c
@@ -6,7 +6,7 @@
 /*   By: khais <marvin@42.fr>                       +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2025/03/07 11:42:29 by khais             #+#    #+#             */
-/*   Updated: 2025/03/11 11:22:54 by khais            ###   ########.fr       */
+/*   Updated: 2025/03/11 11:24:30 by khais            ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -55,3 +55,17 @@ char	*here_doc_random_filename(void)
 	close(randomfd);
 	return (ft_buffer_to_charptr(filename));
 }
+
+/*
+** Read from STDIN into some file until a line that is exactly equal to the
+** marker is read.
+**
+** Then unlink the file, and return a filedescriptor to it, seeked to the start.
+**
+** If NULL is given as argument, or any other error occurs, return -1.
+*/
+int	here_doc(t_worddesc *marker)
+{
+	(void)marker;
+	return (-1);
+}
diff --git a/src/executing/here_doc/here_doc.h b/src/executing/here_doc/here_doc.h
index 9b8ba1c..8d60f16 100644
--- a/src/executing/here_doc/here_doc.h
+++ b/src/executing/here_doc/here_doc.h
@@ -6,13 +6,16 @@
 /*   By: khais <marvin@42.fr>                       +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2025/03/07 11:41:27 by khais             #+#    #+#             */
-/*   Updated: 2025/03/11 10:58:19 by khais            ###   ########.fr       */
+/*   Updated: 2025/03/11 11:18:47 by khais            ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
 #ifndef HERE_DOC_H
 # define HERE_DOC_H
 
+# include "../../parser/worddesc/worddesc.h"
+
+int		here_doc(t_worddesc *marker);
 char	*here_doc_random_filename(void);
 
 #endif // HERE_DOC_H
diff --git a/tests/test_here_doc.c b/tests/test_here_doc.c
index 40d4255..1c5019d 100644
--- a/tests/test_here_doc.c
+++ b/tests/test_here_doc.c
@@ -6,7 +6,7 @@
 /*   By: khais <marvin@42.fr>                       +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2025/03/07 11:43:32 by khais             #+#    #+#             */
-/*   Updated: 2025/03/10 18:23:36 by khais            ###   ########.fr       */
+/*   Updated: 2025/03/11 11:19:16 by khais            ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -34,7 +34,15 @@ static void	test_here_doc_filename_generation(void)
 	do_leak_check();
 }
 
+static void	test_here_doc_null_args(void)
+{
+	ft_dprintf(STDERR_FILENO, "==> %s <==\n", __FUNCTION__);
+	assert(-1 == here_doc(NULL));
+	do_leak_check();
+}
+
 int main(void) {
 	test_here_doc_filename_generation();
+	test_here_doc_null_args();
 	return (0);
 }