Michael Fuhr <mike(at)fuhr(dot)org> writes: > If you think this behavior should be changed then propose it on > pgsql-hackers and discuss it with the developers.
I doubt we'll consider changing it. If I haven't missed any of the details, the critical points here are
(1) User names containing trailing (or embedded) spaces are legal. Not a very good idea maybe, but legal both per SQL spec and per our historical practice.
(2) Making ECPG strip trailing spaces would render it unable to connect as such a user.
I don't think ECPG has any business deciding that trailing spaces are insignificant. If that's the case in your application environment, fine: strip the spaces at the application level. But don't expect a general-purpose library to make that policy choice for you.