From 4b427b2d0c2445234b7cdfe06ebb45b2fb611023 Mon Sep 17 00:00:00 2001
From: Jeff Young <jeff@rokeby.ie>
Date: Sat, 25 Feb 2023 16:30:51 +0000
Subject: [PATCH] Add second instance of "don't mess up user formatting" fix.

Fixes https://gitlab.com/kicad/code/kicad/issues/13989
---
 eeschema/sim/sim_property.cpp | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/eeschema/sim/sim_property.cpp b/eeschema/sim/sim_property.cpp
index 24df31f0c5..ab902c386b 100644
--- a/eeschema/sim/sim_property.cpp
+++ b/eeschema/sim/sim_property.cpp
@@ -112,7 +112,18 @@ bool SIM_STRING_PROPERTY::OnEvent( wxPropertyGrid* propgrid, wxWindow* wnd_prima
 
         if( textEntry && m_eval.Process( textEntry->GetValue() ) )
         {
-            SetValueInEvent( m_eval.Result() );
+            double value = SIM_VALUE::ToDouble( m_eval.Result().ToStdString() );
+
+            if( isnan( value )
+                    || value == SIM_VALUE::ToDouble( textEntry->GetValue().ToStdString() ) )
+            {
+                // Don't mess up user formatting if eval'ing didn't actually change the value.
+            }
+            else
+            {
+                SetValueInEvent( m_eval.Result() );
+            }
+
             m_needsEval = false;
             return true;
         }