maint: start %!demo or %!test blocks 2 newlines after endfunction. * vectorize.m, ismethod.m, optimset.m, ostreamtube.m, streamribbon.m, streamtube.m, graphics_toolkit.m, deconv.m, gmres.m, tfqmr.m: Start %!demo or %!test blocks 2 newlines after endfunction.

--- a/scripts/legacy/vectorize.m	Wed Oct 14 13:14:02 2020 -0700
+++ b/scripts/legacy/vectorize.m	Wed Oct 14 14:38:00 2020 -0700
@@ -70,6 +70,7 @@
   endif
 endfunction
 
+
 %!assert (vectorize ("x.^2 + 1"), "x.^2 + 1")
 %!test
 %! fh = @(x) x.^2 + 1;