ParseError when typing multi-line input with comment

[benlorenz]

Since the backport of #397 to release-0.4 (julia nightly since JuliaLang/julia#56110) and also on main, I cannot enter multi-line input which contains comments. Once I press return after the comment it directly aborts with a ParseError instead of letting me continue the input in the next line:

julia> function bla()
       a=1
       b=2 #a comment
ERROR: ParseError:
# Error @ REPL[2]:3:4
a=1
b=2 #a comment
#  └ ── Expected `end`
Stacktrace:
 [1] top-level scope
   @ REPL:1

The same happens when entering an array in multiple lines:

julia> arr = [
       1,
       2,
       3, # i like this number
ERROR: ParseError:
# Error @ REPL[3]:4:3
2,
3, # i like this number
# └ ── Expected `]` or `,`
Stacktrace:
 [1] top-level scope
   @ REPL:1

Note that this applies only to entering this manually line by line, pasting multi-line strings with comments works fine.

With previous julia nightly (or JuliaSyntax.jl) versions the error appears only on the second consecutive empty line:

julia> arr = [
       1,
       2,
       3, # i like this number
       
       
ERROR: ParseError:
# Error @ REPL[33]:5:2
3, # i like this number

#└ ── Expected `]`
Stacktrace:
 [1] top-level scope
   @ REPL:1