Merged revision(s) 20702 from trunk/OpenMPT:

[Mod] MDL: Command 9 is not Set Envelope Position, it select a different envelope instead. As we only have one envelope per type per instrument, instead do the only thing we can do for now: Assume that the instrument envelope was disabled and enable it.
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git-svn-id: https://source.openmpt.org/svn/openmpt/branches/OpenMPT-1.28@20775 56274372-70c3-4bfc-bfc3-4c3a0b034d27

soundlib/Load_mdl.cpp

@@ -169,7 +169,7 @@ static const ModCommand::COMMAND MDLEffTrans[] =
 	/* Either column */
 	/* 7 */ CMD_TEMPO,
 	/* 8 */ CMD_PANNING8,
-	/* 9 */ CMD_SETENVPOSITION,
+	/* 9 */ CMD_S3MCMDEX,
 	/* A */ CMD_NONE,
 	/* B */ CMD_POSITIONJUMP,
 	/* C */ CMD_GLOBALVOLUME,
@@ -206,6 +206,16 @@ static void ConvertMDLCommand(uint8_t &cmd, uint8_t &param)
 	case 0x08: // Panning
 		param = (param & 0x7F) * 2u;
 		break;
+	case 0x09: // Set Envelope (we can only have one envelope per type...)
+		if(param < 0x40)
+			param = 0x78;  // Enable the one volume envelope we have
+		else if (param < 0x80)
+			param = 0x7A;  // Enable the one panning envelope we have
+		else if(param < 0xC0)
+			param = 0x7C;  // Enable the one pitch envelope we have
+		else
+			cmd = CMD_NONE;
+		break;
 	case 0x0C:	// Global volume
 		param = (param + 1) / 2u;
 		break;