From f7f22db6030464f63eb942da04b3d5e10351f770 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Wed, 2 Nov 2022 09:56:31 +0200
Subject: More work on child process diagnostics buffering

---
 libbuild2/script/run.cxx | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'libbuild2/script')

diff --git a/libbuild2/script/run.cxx b/libbuild2/script/run.cxx
index 1971bd1..0d9e472 100644
--- a/libbuild2/script/run.cxx
+++ b/libbuild2/script/run.cxx
@@ -1015,6 +1015,8 @@ namespace build2
       //
       // Set the empty_ flag to false after the first character is read.
       //
+      // @@ PERF: reading one character at a time is not ideal.
+      //
       auto get = [this] () -> optional<char>
       {
         char r;
-- 
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