Index: lib/Support/Unix/Process.inc
===================================================================
--- lib/Support/Unix/Process.inc
+++ lib/Support/Unix/Process.inc
@@ -369,6 +369,10 @@
   // Return true if we found a color capabilities for the current terminal.
   if (HasColors)
     return true;
+#else
+  if (const char *TermStr = std::getenv("TERM"))
+    if (strcmp(TermStr, "dumb") != 0)
+      return true;
 #endif
 
   // Otherwise, be conservative.