Fix feedrate after toolchange

The fix is simple. Most changes are because of changed indendation,
bacause of leaving early for wrong tool number

Marlin/Marlin_main.cpp

@@ -6304,23 +6304,23 @@ inline void gcode_T(uint8_t tmp_extruder) {
     SERIAL_CHAR('T');
     SERIAL_PROTOCOL_F(tmp_extruder, DEC);
     SERIAL_ECHOLN(MSG_INVALID_EXTRUDER);
+    return;
   }
-  else {
-    target_extruder = tmp_extruder;
 
-    #if EXTRUDERS > 1
-      bool make_move = false;
-    #endif
+  float stored_feedrate = feedrate;
 
   if (code_seen('F')) {
-
-      #if EXTRUDERS > 1
-        make_move = true;
-      #endif
-
     float next_feedrate = code_value();
-      if (next_feedrate > 0.0) feedrate = next_feedrate;
+    if (next_feedrate > 0.0) stored_feedrate = feedrate = next_feedrate;
   }
+  else {
+    #ifdef XY_TRAVEL_SPEED
+      feedrate = XY_TRAVEL_SPEED;
+    #else
+      feedrate = min(max_feedrate[X_AXIS], max_feedrate[Y_AXIS]);
+    #endif
+  }
+
   #if EXTRUDERS > 1
     if (tmp_extruder != active_extruder) {
       // Save current position to return to after applying extruder offset
@@ -6352,7 +6352,7 @@ inline void gcode_T(uint8_t tmp_extruder) {
         }
         else if (dual_x_carriage_mode == DXC_DUPLICATION_MODE) {
           active_extruder_parked = (active_extruder == 0); // this triggers the second extruder to move into the duplication position
-            if (active_extruder == 0 || active_extruder_parked)
+          if (active_extruder_parked)
             current_position[X_AXIS] = inactive_extruder_x_pos;
           else
             current_position[X_AXIS] = destination[X_AXIS] + duplicate_extruder_x_offset;
@@ -6366,6 +6366,7 @@ inline void gcode_T(uint8_t tmp_extruder) {
           active_extruder_parked = true;
           delayed_move_time = 0;
         }
+        // No extra case for AUTO_BED_LEVELING_FEATURE in DUAL_X_CARRIAGE. Does that mean they don't work together?
       #else // !DUAL_X_CARRIAGE
         #if ENABLED(AUTO_BED_LEVELING_FEATURE)
           // Offset extruder, make sure to apply the bed level rotation matrix
@@ -6414,9 +6415,9 @@ inline void gcode_T(uint8_t tmp_extruder) {
       #else
         sync_plan_position();
       #endif
-        // Move to the old position if 'F' was in the parameters
-        if (make_move && IsRunning()) prepare_move();
-      }
+      // Move to the old position
+      if (IsRunning()) prepare_move();
+    } // (tmp_extruder != active_extruder)
 
     #if ENABLED(EXT_SOLENOID)
       st_synchronize();
@@ -6425,11 +6426,13 @@ inline void gcode_T(uint8_t tmp_extruder) {
     #endif // EXT_SOLENOID
 
   #endif // EXTRUDERS > 1
+
+  feedrate = stored_feedrate;
+
   SERIAL_ECHO_START;
   SERIAL_ECHO(MSG_ACTIVE_EXTRUDER);
   SERIAL_PROTOCOLLN((int)active_extruder);
 }
-}
 
 /**
  * Process a single command and dispatch it to its handler