From 8f14f422e053646a1b171a87f696d9d7f232e3bf Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Sun, 17 Apr 2016 14:01:57 +0200
Subject: [PATCH] unhardcode "Program Name" string length

---
 gtk2_ardour/mixer_strip.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/gtk2_ardour/mixer_strip.cc b/gtk2_ardour/mixer_strip.cc
index 999208562f..db5d70bc85 100644
--- a/gtk2_ardour/mixer_strip.cc
+++ b/gtk2_ardour/mixer_strip.cc
@@ -1365,7 +1365,8 @@ MixerStrip::update_io_button (boost::shared_ptr<ARDOUR::Route> route, Width widt
 			// "ardour:Master/" -> "Master"
 			string::size_type slash = ardour_track_name.find("/");
 			if (slash != string::npos) {
-				label << ardour_track_name.substr(7, slash - 7);
+				const size_t ppps = RouteUI::program_port_prefix.size () + 1; // "ardour:"
+				label << ardour_track_name.substr (ppps, slash - ppps);
 				have_label = true;
 			}
 		}