Entering 0 exprs (whitespace or the empty string) at the REPL gives
an error from `swank:listener-eval`, which subscripts the parse tree
with index 1. (Entering more than one simply ignores all after the
Entering 0 exprs (whitespace or the empty string) at the REPL gives
an error from `swank:listener-eval`, which subscripts the parse tree
with index 1. (Entering more than one simply ignores all after the