From 30e436bba66673e17728e3ba3291b58dd16c1696 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Sat, 7 Jul 2018 10:46:25 +0200
Subject: Add optional message to invalid_option exception

---
 cli/options.cxx | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'cli/options.cxx')

diff --git a/cli/options.cxx b/cli/options.cxx
index b64c26a..809b588 100644
--- a/cli/options.cxx
+++ b/cli/options.cxx
@@ -91,6 +91,9 @@ namespace cli
   {
     os << "invalid value '" << value ().c_str () << "' for option '"
        << option ().c_str () << "'";
+
+    if (!message ().empty ())
+      os << ": " << message ().c_str ();
   }
 
   const char* invalid_value::
-- 
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