heredoc and builtins fix

src/parser/parser_expand_fields.c

@@ -63,6 +63,20 @@ static bool	process_word_fields(
 	return (true);
 }
 
+static bool	set_empty_word_field(
+	t_list **fields,
+	t_minishell *minishell
+)
+{
+	t_list	*node;
+
+	node = ft_lstnew(ft_strdup(""));
+	if (node == NULL || node->content == NULL)
+		return (free(node), parser_expand_malloc_error(minishell), false);
+	*fields = node;
+	return (true);
+}
+
 bool	parser_expand_word_fields(
 	const char *word,
 	t_minishell *minishell,
@@ -75,6 +89,8 @@ bool	parser_expand_word_fields(
 	t_fields_ctx	ctx;
 
 	*fields = NULL;
+	if (word[0] == '\0')
+		return (set_empty_word_field(fields, minishell));
 	current = ft_strdup("");
 	if (current == NULL)
 		return (parser_expand_malloc_error(minishell), false);