From 6faf91a8068a14ce0fd5ac9695b567a569cad2c1 Mon Sep 17 00:00:00 2001
From: Emil Lerch <emil@lerch.org>
Date: Thu, 9 Nov 2023 12:26:33 -0800
Subject: [PATCH] add an ignore filter based on substring of the file

---
 src/drv_maildir.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/drv_maildir.c b/src/drv_maildir.c
index f916632..6080877 100644
--- a/src/drv_maildir.c
+++ b/src/drv_maildir.c
@@ -991,9 +991,12 @@ maildir_scan( maildir_store_t *ctx, msg_t_array_alloc_t *msglist )
 #endif /* USE_DB */
 				return DRV_BOX_BAD;
 			}
+			const char *filter = getenv("MBSYNC_MAILDIR_IGNORE");
 			while ((e = readdir( d ))) {
 				if (*e->d_name == '.')
 					continue;
+				if (filter && strstr(e->d_name, filter))
+					continue;
 				ctx->total_msgs++;
 				ctx->recent_msgs += i;
 #ifdef USE_DB