https://www.imagemagick.org/discourse-server/viewtopic.php?f=3&t=33466

diff --git a/MagickWand/operation.c b/MagickWand/operation.c
index 76748d703effe49d8dec1901600b153909b7f9e6..4f7e045d87cdcb75af622f0efc6fcbea095c99d8 100644 (file)
--- a/MagickWand/operation.c
+++ b/MagickWand/operation.c
@@ -3115,14 +3115,14 @@ static MagickBooleanType CLISimpleOperatorImage(MagickCLI *cli_wand,
         }
       if (LocaleCompare("region",option+1) == 0)
         {
-          if (IsGeometry(arg1) == MagickFalse)
-            CLIWandExceptArgBreak(OptionError,"InvalidArgument",option,arg1);
           if (*option == '+')
             {
               (void) SetImageRegionMask(_image,WritePixelMask,
                 (const RectangleInfo *) NULL,_exception);
               break;
             }
+          if (IsGeometry(arg1) == MagickFalse)
+            CLIWandExceptArgBreak(OptionError,"InvalidArgument",option,arg1);
           (void) ParseGravityGeometry(_image,arg1,&geometry,_exception);
           (void) SetImageRegionMask(_image,WritePixelMask,&geometry,_exception);
           break;