Yes, this is technically user error: the shell has not yet invoked eval "$(plenv init - [...])"
...but we know what the user was trying to do, so we can & should provide a friendly/helpful error message.
Something like:
This shell is not configured to use plenv.
To fix, run this command now (or add the command to your shell config and start a new shell):
eval "$(plenv init -)"
Yes, this is technically user error: the shell has not yet invoked
eval "$(plenv init - [...])"...but we know what the user was trying to do, so we can & should provide a friendly/helpful error message. Something like:(I'll try to send a MR, after vacation ;-)