From 3ae916cbfc7346b2ac05993d19105e94fea71846 Mon Sep 17 00:00:00 2001
From: Yan Pas <yanp.bugz@gmail.com>
Date: Sat, 19 Jan 2019 17:28:01 +0300
Subject: [PATCH] log to stderr to forward to lsp client

---
 src/log.cc | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/src/log.cc b/src/log.cc
index a10a4a7d..38a71342 100644
--- a/src/log.cc
+++ b/src/log.cc
@@ -67,11 +67,14 @@ Message::Message(Verbosity verbosity, const char *file, int line)
 }
 
 Message::~Message() {
-  if (!file)
-    return;
   std::lock_guard<std::mutex> lock(mtx);
   stream_ << '\n';
-  fputs(stream_.str().c_str(), file);
+  if (file) {
+    fputs(stream_.str().c_str(), file);
+    fflush(file);
+  }
+  fputs(stream_.str().c_str(), stderr);
+  fflush(stderr); // stderr is redirected to LSP client
   if (verbosity_ == Verbosity_FATAL)
     abort();
 }