Don't double-escape netnames.

Netnames in wxChoice or wxListBox are already in internal format
and don't need escaping again.

Fixes: lp:1823863
* https://bugs.launchpad.net/kicad/+bug/1823863

common/string.cpp

@@ -59,14 +59,9 @@ wxString EscapeString( const wxString& aSource, ESCAPE_CONTEXT aContext )
         }
         else if( aContext == CTX_NETNAME )
         {
-// Currently, modifying a netname creates mubh more issues than it fixes.
-// Especially the netnames shown on screen are not those living in netlists
-// breaking net info in Spice, Gerber X2 and IPC356 for instance
-#if 0
             if( c == '/' )
                 converted += "{slash}";
             else
-#endif
                 converted += c;
         }
         else if( aContext == CTX_LIBID )

common/widgets/net_selector.cpp

@@ -189,8 +189,7 @@ public:
         }
         else
         {
-            wxString netname = EscapeString( selectedNetName, CTX_NETNAME );
-            NETINFO_ITEM* netInfo = m_netinfoList->GetNetItem( netname );
+            NETINFO_ITEM* netInfo = m_netinfoList->GetNetItem( selectedNetName );
 
             if( netInfo == nullptr || netInfo->GetNet() == 0 )
             {

gerbview/events_called_functions.cpp

@@ -317,7 +317,7 @@ void GERBVIEW_FRAME::OnSelectHighlightChoice( wxCommandEvent& event )
             break;
 
         case ID_GBR_AUX_TOOLBAR_PCB_NET_CHOICE:
-            settings->m_netHighlightString = EscapeString( m_SelNetnameBox->GetStringSelection(), CTX_NETNAME );
+            settings->m_netHighlightString = m_SelNetnameBox->GetStringSelection();
             break;
 
         case ID_GBR_AUX_TOOLBAR_PCB_APERATTRIBUTES_CHOICE:

gerbview/gbr_layout.cpp

@@ -99,7 +99,7 @@ void GBR_LAYOUT::Draw( EDA_DRAW_PANEL* aPanel, wxDC* aDC, GR_DRAWMODE aDrawMode,
     wxString netHighlight;
 
     if( gerbFrame->m_SelNetnameBox->GetSelection() > 0 )
-        netHighlight = EscapeString( gerbFrame->m_SelNetnameBox->GetStringSelection(), CTX_NETNAME );
+        netHighlight = gerbFrame->m_SelNetnameBox->GetStringSelection();
 
     wxString aperAttrHighlight = gerbFrame->m_SelAperAttributesBox->GetStringSelection();
 

pcbnew/dialogs/dialog_copper_zones.cpp

@@ -396,7 +396,7 @@ bool DIALOG_COPPER_ZONE::AcceptOptions( bool aUseExportableSetupOnly )
     // Search net_code for this net, if a net was selected
     if( m_ListNetNameSelection->GetSelection() > 0 )
     {
-        wxString netname = EscapeString( m_ListNetNameSelection->GetStringSelection(), CTX_NETNAME );
+        wxString netname = m_ListNetNameSelection->GetStringSelection();
         net = m_Parent->GetBoard()->FindNet( netname );
     }
 

pcbnew/dialogs/panel_setup_netclasses.cpp

@@ -265,7 +265,7 @@ bool PANEL_SETUP_NETCLASSES::TransferDataFromWindow()
         NETCLASSPTR nc = netclasses.Find( m_membershipGrid->GetCellValue( row, 1 ) );
 
         if( nc )
-            nc->Add( EscapeString( m_membershipGrid->GetCellValue( row, 0 ), CTX_NETNAME ) );
+            nc->Add( m_membershipGrid->GetCellValue( row, 0 ) );
     }
 
     m_Pcb->SynchronizeNetsAndNetClasses();