With the attached patch, it is now possible to lauch a selective gaussian
blur with a radius less than 1.

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--- ../gimp-1.3.7/plug-ins/common/sel_gauss.c   Sat May 11 06:41:53 2002
+++ sel_gauss.c Fri Aug 16 11:01:50 2002
@@ -105,7 +105,7 @@ query (void)
     { GIMP_PDB_INT32, "run_mode", "Interactive, non-interactive" },
     { GIMP_PDB_IMAGE, "image", "Input image (unused)" },
     { GIMP_PDB_DRAWABLE, "drawable", "Input drawable" },
-    { GIMP_PDB_FLOAT, "radius", "Radius of gaussian blur (in pixels > 1.0)" },
+    { GIMP_PDB_FLOAT, "radius", "Radius of gaussian blur (in pixels >=
0.1)" },
     { GIMP_PDB_INT32, "maxdelta", "Maximum delta" }
   };

@@ -171,7 +171,7 @@ run (gchar      *name,
          bvals.radius   = param[3].data.d_float;
          bvals.maxdelta = CLAMP (param[4].data.d_int32, 0, 255);
        }
-      if (status == GIMP_PDB_SUCCESS && (bvals.radius < 1.0))
+      if (status == GIMP_PDB_SUCCESS && (bvals.radius < 0.1))
        status = GIMP_PDB_CALLING_ERROR;
       break;

@@ -264,7 +264,7 @@ sel_gauss_dialog (void)
   gtk_container_add (GTK_CONTAINER (frame), table);

   spinbutton = gimp_spin_button_new (&adj,
-                                    bvals.radius, 1.0, G_MAXINT, 1.0, 5.0,
+                                    bvals.radius, 0.1, G_MAXINT, 0.1, 5.0,
                                     0, 1, 2);
   gimp_table_attach_aligned (GTK_TABLE (table), 0, 0,
                             _("_Blur Radius:"), 1.0, 0.5,
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