Sort plugin presets by default

libs/ardour/ardour/plugin.h

@@ -228,6 +228,14 @@ public:
 			return uri != a.uri || label != a.label;
 		}
 
+		bool operator< (PresetRecord const& a) const
+		{
+			if (label == a.label) {
+				return uri < a.uri;
+			}
+			return label < a.label;
+		}
+
 		std::string uri;
 		std::string label;
 		std::string description;

libs/ardour/audio_unit.cc

@@ -2424,6 +2424,7 @@ AUPluginInfo::get_presets (bool user_only) const
 	}
 
 	if (user_only) {
+		std::sort (p.begin (), p.end();
 		return p;
 	}
 
@@ -2460,6 +2461,7 @@ AUPluginInfo::get_presets (bool user_only) const
 	CFRelease (presets);
 	unit->Uninitialize ();
 
+	std::sort (p.begin (), p.end ());
 	return p;
 }
 

libs/ardour/ladspa_plugin.cc

@@ -727,6 +727,8 @@ LadspaPluginInfo::get_presets (bool /*user_only*/) const
 		}
 		lrdf_free_uris(set_uris);
 	}
+
+	std::sort (p.begin (), p.end ());
 #endif
 	return p;
 }

libs/ardour/lv2_plugin.cc

@@ -3720,6 +3720,8 @@ LV2PluginInfo::get_presets (bool user_only) const
 	lilv_node_free(pset_Preset);
 	lilv_node_free(lv2_appliesTo);
 
+	std::sort (p.begin (), p.end ());
+
 	return p;
 }
 

libs/ardour/plugin.cc

@@ -477,6 +477,8 @@ Plugin::get_presets ()
 		p.push_back (i->second);
 	}
 
+	std::sort (p.begin(), p.end());
+
 	return p;
 }
 

libs/ardour/vst3_plugin.cc

@@ -1002,6 +1002,8 @@ VST3PluginInfo::get_presets (bool user_only) const
 		p.push_back (Plugin::PresetRecord (uri, preset_name, is_user));
 	}
 
+	std::sort (p.begin (), p.end ());
+
 	return p;
 }