From 4da9e41e0376ac26c65d18c9557faf691bc06457 Mon Sep 17 00:00:00 2001
From: James Crook <james.k.crook@gmail.com>
Date: Sun, 17 Dec 2017 16:49:35 +0000
Subject: [PATCH] Bug 1799 - Un-muting with a single track unnecessarily
 activates the Solo button

---
 src/Project.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/Project.cpp b/src/Project.cpp
index 0ff601c1f..e07646073 100644
--- a/src/Project.cpp
+++ b/src/Project.cpp
@@ -5566,12 +5566,15 @@ void AudacityProject::HandleTrackMute(Track *t, const bool exclusive)
          TrackListIterator iter(GetTracks());
          Track *i = iter.First();
          int nPlaying=0;
+         int nPlayableTracks =0;
 
          // We also set a solo indicator if we have just one track / stereo pair playing.
+         // in a group of more than one playable tracks.
          // otherwise clear solo on everything.
          while (i) {
             auto pi = dynamic_cast<PlayableTrack *>( i );
             if (pi) {
+               nPlayableTracks++;
                if( !pi->GetMute())
                {
                   nPlaying += 1;
@@ -5586,7 +5589,7 @@ void AudacityProject::HandleTrackMute(Track *t, const bool exclusive)
          while (i) {
             auto pi = dynamic_cast<PlayableTrack *>( i );
             if (pi)
-               pi->SetSolo( (nPlaying==1) && !pi->GetMute() );   // will set both of a stereo pair
+               pi->SetSolo( (nPlaying==1) && (nPlayableTracks > 1 ) && !pi->GetMute() );   // will set both of a stereo pair
             i = iter.Next();
          }
       }