From 92bfee04245a05d760ffba9da0bd230a76701ffb Mon Sep 17 00:00:00 2001
From: Fangjun Kuang <csukuangfj@gmail.com>
Date: Wed, 9 Aug 2023 15:33:01 +0800
Subject: [PATCH] Flush stderr on write (#248)

---
 sherpa-onnx/csrc/sherpa-onnx-alsa.cc       | 1 +
 sherpa-onnx/csrc/sherpa-onnx-microphone.cc | 4 +++-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/sherpa-onnx/csrc/sherpa-onnx-alsa.cc b/sherpa-onnx/csrc/sherpa-onnx-alsa.cc
index c468f01b..835a772b 100644
--- a/sherpa-onnx/csrc/sherpa-onnx-alsa.cc
+++ b/sherpa-onnx/csrc/sherpa-onnx-alsa.cc
@@ -142,6 +142,7 @@ as the device_name.
                      [](auto c) { return std::tolower(c); });
 
       display.Print(segment_index, text);
+      fflush(stderr);
     }
 
     if (is_endpoint) {
diff --git a/sherpa-onnx/csrc/sherpa-onnx-microphone.cc b/sherpa-onnx/csrc/sherpa-onnx-microphone.cc
index a8d5c3b3..bdb43a20 100644
--- a/sherpa-onnx/csrc/sherpa-onnx-microphone.cc
+++ b/sherpa-onnx/csrc/sherpa-onnx-microphone.cc
@@ -139,12 +139,14 @@ for a list of pre-trained models to download.
       std::transform(text.begin(), text.end(), text.begin(),
                      [](auto c) { return std::tolower(c); });
 
-      display.Print(segment_index, text);
+      fprintf(stderr, "\r%d: %s", segment_index, text.c_str());
+      fflush(stderr);
     }
 
     if (is_endpoint) {
       if (!text.empty()) {
         ++segment_index;
+        fprintf(stderr, "\n");
       }
 
       recognizer.Reset(s.get());