From 24594c747e7d516baa6dac0113e81f3bfd1970b6 Mon Sep 17 00:00:00 2001
From: Nicolas <Rakete1111@users.noreply.github.com>
Date: Mon, 10 Dec 2018 00:57:20 +0100
Subject: [PATCH] Disable printing the reset escape code when no style
 modifiers where applied. (#973)

---
 include/fmt/color.h      | 8 +++++++-
 test/format-impl-test.cc | 1 +
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/include/fmt/color.h b/include/fmt/color.h
index c5e30168..78b78956 100644
--- a/include/fmt/color.h
+++ b/include/fmt/color.h
@@ -438,20 +438,26 @@ template <
   typename S, typename Char = typename internal::char_t<S>::type>
 void vprint(std::FILE *f, const text_style &ts, const S &format,
             basic_format_args<typename buffer_context<Char>::type> args) {
+  bool has_style = false;
   if (ts.has_emphasis()) {
+    has_style = true;
     internal::fputs<Char>(
           internal::make_emphasis<Char>(ts.get_emphasis()), f);
   }
   if (ts.has_foreground()) {
+    has_style = true;
     internal::fputs<Char>(
           internal::make_foreground_color<Char>(ts.get_foreground()), f);
   }
   if (ts.has_background()) {
+    has_style = true;
     internal::fputs<Char>(
         internal::make_background_color<Char>(ts.get_background()), f);
   }
   vprint(f, format, args);
-  internal::reset_color<Char>(f);
+  if (has_style) {
+    internal::reset_color<Char>(f);
+  }
 }
 
 /**
diff --git a/test/format-impl-test.cc b/test/format-impl-test.cc
index 9774c33a..f4d75aae 100644
--- a/test/format-impl-test.cc
+++ b/test/format-impl-test.cc
@@ -232,4 +232,5 @@ TEST(ColorsTest, Colors) {
                "\x1b[1mbold error\x1b[0m");
   EXPECT_WRITE(stderr, fmt::print(stderr, fg(fmt::color::blue), "blue log"),
                  "\x1b[38;2;000;000;255mblue log\x1b[0m");
+  EXPECT_WRITE(stdout, fmt::print(fmt::text_style(), "hi"), "hi");
 }