I don't recall if this has come up before.
I'm sometimes mildly annoyed when I get on a new system and find the username missing in my psql prompt. Or if a customer shows me a screen and I have to ask "which user is this". If we're dealing with several roles it can get confusing. My usual .psqlrc has
\set PROMPT1 '%n@%~%R%x%# '
So my suggestion is that we prepend '%n@' to the default psql PROMPT1 (and maybe PROMPT2).
I realize it's not exactly earth-shattering, but I think it's a bit more user-friendly.
(Would be a good beginner project, the code change would be tiny but there are lots of docs / examples that we might want to change if we did it.)
cheers
andrew
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Andrew Dunstan
EDB: https://www.enterprisedb.com