When working with a component that contains multiple independent units,
KiCad warns about pin locations being occupied even if the conflicting
pin is in a different unit.

I've attached a patch that suppresses the warning if the pins are in
different units and if we're in pin-by-pin mode, and thus conflicts
can neither occur at the GUI nor in the underlying model.

- Werner

---

Index: kicad/eeschema/pinedit.cpp
===================================================================
--- kicad.orig/eeschema/pinedit.cpp	2010-04-28 04:34:54.000000000 -0300
+++ kicad/eeschema/pinedit.cpp	2010-04-28 05:35:24.000000000 -0300
@@ -231,6 +231,11 @@
         if( Pin == CurrentPin || newpos != Pin->m_Pos || Pin->m_Flags )
             continue;
 
+	if( g_EditPinByPinIsOn &&
+	    Pin->m_Unit != CurrentPin->m_Unit &&
+	    Pin->m_Unit && CurrentPin->m_Unit )
+	    continue;
+
         if( ask_for_pin && !g_EditPinByPinIsOn )
         {
             DrawPanel->m_IgnoreMouseEvents = true;