From b7d966ecb3e7180342706c7d4e906f6138254e05 Mon Sep 17 00:00:00 2001
From: Tino Reichardt <milky-7zip@mcmilk.de>
Date: Thu, 29 Sep 2016 21:53:48 +0200
Subject: [PATCH] major fix, detect skippable frames in .zst files

---
 CPP/7zip/Archive/ZstdHandler.cpp | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/CPP/7zip/Archive/ZstdHandler.cpp b/CPP/7zip/Archive/ZstdHandler.cpp
index 281273e5..2b7a698e 100644
--- a/CPP/7zip/Archive/ZstdHandler.cpp
+++ b/CPP/7zip/Archive/ZstdHandler.cpp
@@ -107,12 +107,13 @@ API_FUNC_static_IsArc IsArc_zstd(const Byte *p, size_t size)
   if (size < 4)
     return k_IsArc_Res_NEED_MORE;
 
-  // 0xFD2FB525 = 0.5
-  // ..
-  // 0xFD2FB528 = 0.8
   UInt32 magic = GetUi32(p);
+  // zstd magic's
   if (magic >= 0xFD2FB525 && magic <= 0xFD2FB528)
     return k_IsArc_Res_YES;
+  // skippable frames
+  if (magic >= 0x184D2A50 && magic <= 0x184D2A5F)
+    return k_IsArc_Res_YES;
 
   return k_IsArc_Res_NO;
 }