semicolon output suppression in stream REPL

[iwelch]

refers to https://discourse.julialang.org/t/force-interactive/9479/4.

$ cat > a.jl
x=[1,2,3]
x+22
$ julia -i < a.jl
$ cat a.jl | julia -i
3-element Array{Int64,1}:
 1
 2
 3
3-element Array{Int64,1}:
 23
 24
 25

perhaps related, trailing semi-colon is treated differently in -i batch mode from real interactive mode (where it would suppress output):

$ echo "1+2;;;" | julia -i
3

Another difference between julia -i and true interactive emulation is that exceptions terminate the julia process, while a true REPL prints the exception and then waits for the next input.

[yuyichao]

Another difference between julia -i and true interactive emulation is that exceptions terminate the julia process, while a true REPL prints the exception and then waits for the next input.

This one is expected since the input is terminated.

[JeffBezanson]

On master redirect and cat behave the same for me.

[vtjnash]

That was fixed by e7a2da7#diff-3779573011725ad47bfa3f6644536342R490. We can still add some form of trailing-semicolon output suppression though.

[Benoit9]

Another difference between julia -i and true interactive emulation is that exceptions terminate the julia process, while a true REPL prints the exception and then waits for the next input.

This one is expected since the input is terminated.

Is there any chance this could be changed? It's really handy to be able to examine/change the variables that caused an exception. I do it all the time with python -i