From fdec2d722d2b81e7bdbdfec2209a9df28d10dde0 Mon Sep 17 00:00:00 2001
From: Onran <kotshel2009@gmail.com>
Date: Sun, 21 Jun 2026 19:20:37 +0900
Subject: [PATCH] fix of io_stream:read_fully for binary and yield mode

---
 res/modules/io_stream.lua | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/res/modules/io_stream.lua b/res/modules/io_stream.lua
index b608a22a9..5350abb9f 100644
--- a/res/modules/io_stream.lua
+++ b/res/modules/io_stream.lua
@@ -145,8 +145,12 @@ function io_stream:__update_read_buffer()
     end
 end
 
-function io_stream:__read(length)
+function io_stream:__read(length, fromReadFully)
     if self.mode == YIELD_MODE then
+        if fromReadFully then
+            return self.ioLib.read(self.descriptor, length)
+        end
+
         local buffer = Bytearray()
 
         while #buffer < length do
@@ -203,7 +207,9 @@ function io_stream:read_fully(useTable)
     if self.binaryMode then
         local result = useTable and Bytearray() or { }
 
-        readFully(result, function() return self:__read(self.maxBufferSize) end)
+        readFully(result, function() return self:__read(self.maxBufferSize, true) end)
+
+        return result
     else
         if useTable then
             local lines = { }