Add tmux and tmux-256color to the colored terminal list.

googletest/src/gtest.cc

@@ -2930,6 +2930,8 @@ bool ShouldUseColor(bool stdout_is_tty) {
         String::CStringEquals(term, "xterm-256color") ||
         String::CStringEquals(term, "screen") ||
         String::CStringEquals(term, "screen-256color") ||
+        String::CStringEquals(term, "tmux") ||
+        String::CStringEquals(term, "tmux-256color") ||
         String::CStringEquals(term, "rxvt-unicode") ||
         String::CStringEquals(term, "rxvt-unicode-256color") ||
         String::CStringEquals(term, "linux") ||

googletest/test/gtest_unittest.cc

@@ -6840,6 +6840,12 @@ TEST(ColoredOutputTest, UsesColorsWhenTermSupportsColors) {
   SetEnv("TERM", "screen-256color");  // TERM supports colors.
   EXPECT_TRUE(ShouldUseColor(true));  // Stdout is a TTY.
 
+  SetEnv("TERM", "tmux");  // TERM supports colors.
+  EXPECT_TRUE(ShouldUseColor(true));  // Stdout is a TTY.
+
+  SetEnv("TERM", "tmux-256color");  // TERM supports colors.
+  EXPECT_TRUE(ShouldUseColor(true));  // Stdout is a TTY.
+
   SetEnv("TERM", "rxvt-unicode");  // TERM supports colors.
   EXPECT_TRUE(ShouldUseColor(true));  // Stdout is a TTY.