On Tue, Apr 02, 2019 at 01:43:09PM +0200, Mojca Miklavec wrote:

Off-list: please try to remove the old/regular installation from path, just for the test; it's probably interfering and you get one executable from one path and the other one from another.

Success! Yes, both executables must have interfered. Now it works with the long command as well with the short "context" one. Thank you Hans and Mojca! Rudolf