From ef467fd428a26f93d498ef6c3cfb6aa57f9f49c9 Mon Sep 17 00:00:00 2001
From: Bimba Shrestha <bimbashrestha@fb.com>
Date: Mon, 11 May 2020 12:22:45 -0500
Subject: [PATCH] documenting non-supported grep options for zstdgrep

---
 programs/README.md | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/programs/README.md b/programs/README.md
index 53706de72..63ce79fc1 100644
--- a/programs/README.md
+++ b/programs/README.md
@@ -272,6 +272,19 @@ It's used the same way as normal `grep`, for example :
 `zstdgrep pattern file.zst`
 
 `zstdgrep` is _not_ compatible with dictionary compression.
+`zstdgrep` does not support the following grep options
+
+```
+--dereference-recursive (-R)
+    --directories (-d)
+    --exclude
+    --exclude-from
+    --exclude-dir
+    --include
+    --null (-Z),
+    --null-data (-z)
+    --recursive (-r)
+```
 
 To search into a file compressed with a dictionary,
 it's necessary to decompress it using `zstd` or `zstdcat`,
-- 
2.47.2