Simple method to implement multiple-line inputs in interactive terminal (not in ml_selection)

[RibomBalt]

Hello, in issue #3 you did a good job dealing with multiple-line inputs in selected scripts by cacheing them into a temp file. But in the interactive shell it's still not possible to run multiple-line scripts, especially those with for/if/while/try etc. (v0.3.2)

I have an idea: we can cache the inputs and execute them all when an empty line is input. To better explain this idea a python pseudo-code is presented below:

# what it used to be
def loop(inputs):
    run(inputs)
# what it can be better
def loop(inputs):
    global buffer
    if(inputs == ''):
        run(buffer)
        buffer=''
    else:
        buffer = '\n'.join([buffer, inputs]) # '\n' may be changed to ';'

With this method, we can run multiple-line script interactively just like in original MATLAB shells, e.g. like this:

>> for i=1:5
>> s=s+i
>> end
>> 
% protential outputs

I'm not familiar with Typescript so I can't do it myself, but I suppose this can be done by reusing the method and codes you dealt with issue #3.

Best Wishes!

[apommel]

If using your idea, that would mean someone would have to press enter twice in order to execute a single line instruction? I don't like the idea that much. I though about implementing that but there's really no clean way of doing it. Trying to detect when instructions blocks are "complete" would likely introduce a ton of bugs.