From ae68d3d3190f4d259442eb8b98362a43b49d47b8 Mon Sep 17 00:00:00 2001
From: Cristy <urban-warrior@imagemagick.org>
Date: Sun, 17 Dec 2017 10:08:40 -0500
Subject: [PATCH] Return non-linear gray for gray50

---
 MagickCore/property.c | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/MagickCore/property.c b/MagickCore/property.c
index a36b8841b..72eb5a858 100644
--- a/MagickCore/property.c
+++ b/MagickCore/property.c
@@ -2801,10 +2801,20 @@ MagickExport const char *GetMagickProperty(ImageInfo *image_info,
         }
       if (LocaleCompare("colorspace",property) == 0)
         {
+          ColorspaceType
+            colorspace;
+
+          ImageType
+            type;
+
+          colorspace=image->colorspace;
+          type=IdentifyImageType(image,exception);
+          if ((type == BilevelType) || (type == GrayscaleType) ||
+              (type == GrayscaleAlphaType))
+            colorspace=GRAYColorspace;
           WarnNoImageReturn("\"%%[%s]\"",property);
-          /* FUTURE: return actual colorspace - no 'gray' stuff */
           string=CommandOptionToMnemonic(MagickColorspaceOptions,(ssize_t)
-            image->colorspace);
+            colorspace);
           break;
         }
       if (LocaleCompare("compose",property) == 0)
-- 
2.50.1