add support for 'replay' function (play current song from the beginning)

src/help.cpp

@@ -172,6 +172,7 @@ void Help::GetKeybindings()
 	*w << DisplayKeys(Key.Pause)			<< "Pause\n";
 	*w << DisplayKeys(Key.Next)			<< "Next track\n";
 	*w << DisplayKeys(Key.Prev)			<< "Previous track\n";
+	*w << DisplayKeys(Key.Replay)			<< "Play current track from the beginning\n";
 	*w << DisplayKeys(Key.SeekForward)		<< "Seek forward\n";
 	*w << DisplayKeys(Key.SeekBackward)		<< "Seek backward\n";
 	*w << DisplayKeys(Key.VolumeDown)		<< "Decrease volume\n";

src/ncmpcpp.cpp

@@ -551,7 +551,13 @@ int main(int argc, char *argv[])
 			design_changed = 1;
 			resize_screen();
 		}
-		else if (Keypressed(input, Key.GoToParentDir))
+		else if (Keypressed(input, Key.GoToParentDir)
+		     &&  (myScreen == myBrowser
+#			ifdef HAVE_TAGLIB_H
+		        || myScreen == myTagEditor
+#			endif // HAVE_TAGLIB_H
+			 )
+			)
 		{
 			if (myScreen == myBrowser && myBrowser->CurrentDir() != "/")
 			{
@@ -797,6 +803,14 @@ int main(int argc, char *argv[])
 				}
 			}
 		}
+		else if (Keypressed(input, Key.Replay))
+		{
+			if (Mpd.isPlaying())
+			{
+				Mpd.Seek(0);
+				UpdateStatusImmediately = 1;
+			}
+		}
 		else if (Keypressed(input, Key.Prev))
 		{
 			Mpd.Prev();

src/settings.cpp

@@ -184,6 +184,7 @@ void NcmpcppKeys::SetDefaults()
 	Pause[0] = 'P';
 	Next[0] = '>';
 	Prev[0] = '<';
+	Replay[0] = KEY_BACKSPACE;
 	SeekForward[0] = 'f';
 	SeekBackward[0] = 'b';
 	ToggleRepeat[0] = 'r';
@@ -268,6 +269,7 @@ void NcmpcppKeys::SetDefaults()
 	Pause[1] = NullKey;
 	Next[1] = NullKey;
 	Prev[1] = NullKey;
+	Replay[1] = 127;
 	SeekForward[1] = NullKey;
 	SeekBackward[1] = NullKey;
 	ToggleRepeat[1] = NullKey;
@@ -503,6 +505,8 @@ void NcmpcppKeys::Read()
 				GetKeys(key, Next);
 			else if (key.find("key_prev ") != std::string::npos)
 				GetKeys(key, Prev);
+			else if (key.find("key_replay ") != std::string::npos)
+				GetKeys(key, Replay);
 			else if (key.find("key_seek_forward ") != std::string::npos)
 				GetKeys(key, SeekForward);
 			else if (key.find("key_seek_backward ") != std::string::npos)

src/settings.h

@@ -89,6 +89,7 @@ struct NcmpcppKeys
 	int Pause[2];
 	int Next[2];
 	int Prev[2];
+	int Replay[2];
 	int SeekForward[2];
 	int SeekBackward[2];
 	int ToggleRepeat[2];