From b54f0119fc14626ac72662aea0fec4661de4b975 Mon Sep 17 00:00:00 2001
From: Gregory Gauthier <gregory.gauthier@perspectum.com>
Date: Wed, 4 Feb 2026 16:20:29 +0000
Subject: [PATCH] use older stat tools. TurboC doesn't know what S_ISDIR is

---
 .gitignore  | 1 +
 src/cnadd.c | 4 ++--
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/.gitignore b/.gitignore
index fb12ca9..48900b0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,4 +2,5 @@
 .grok/
 .idea/
 .vscode/
+.DS_Store
 build/
diff --git a/src/cnadd.c b/src/cnadd.c
index 32a3d03..4413542 100644
--- a/src/cnadd.c
+++ b/src/cnadd.c
@@ -11,8 +11,8 @@ int ensure_directory_exists(const char *path) {
     struct stat st;
     
     if (stat(path, &st) == 0) {
-        /* Path exists, check if it's a directory */
-        if (S_ISDIR(st.st_mode)) {
+        /* Path exists, check if it's a directory using bit test */
+        if ((st.st_mode & S_IFMT) == S_IFDIR) {
             return 1;
         } else {
             fprintf(stderr, "Error: %s exists but is not a directory\n", path);