From ad628da44dd28757f2880577766b3168d7c44a8e Mon Sep 17 00:00:00 2001
From: Takase <20792268+takase1121@users.noreply.github.com>
Date: Tue, 3 Dec 2024 22:47:58 +0800
Subject: [PATCH] process: do not return nil until process exited (#1973)

---
 src/api/process.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/api/process.c b/src/api/process.c
index 50fe6e2..497663e 100644
--- a/src/api/process.c
+++ b/src/api/process.c
@@ -615,7 +615,8 @@ static int g_read(lua_State* L, int stream, unsigned long read_size) {
           length = bytesTransferred;
           memset(&self->overlapped[writable_stream_idx], 0, sizeof(self->overlapped[writable_stream_idx]));
         }
-      } else {
+      } else if (GetLastError() != ERROR_HANDLE_EOF || !poll_process(self, WAIT_NONE)) {
+        // emulate POSIX behavior in the code below by returning empty string until process exits
         signal_process(self, SIGNAL_TERM);
         return 0;
       }