(no commit message)

diff --git a/MagickCore/fx.c b/MagickCore/fx.c
index c25452c73ca9cbd3882f8f25aef926d5c276a998..e21f4f941e0e2cc5331bd9442cc69f56895e041c 100644 (file)
--- a/MagickCore/fx.c
+++ b/MagickCore/fx.c
@@ -2719,6 +2719,12 @@ static MagickRealType FxEvaluateSubexpression(FxInfo *fx_info,
     case 'N':
     case 'n':
     {
+      if (LocaleNCompare(expression,"not",3) == 0)
+        {
+          alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+3,beta,
+            exception);
+          return((MagickRealType) (alpha < MagickEpsilon));
+        }
       if (LocaleCompare(expression,"n") == 0)
         return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
       break;