Multiline editing doesn't fix cursor when user hits enter with cursor halfway up

[dragoncoder047]

So I'm working on a little terminal-based REPL for my programming language Phoo and I found this for the input part. So far works great (though I did have to apply the patch described in #24 to be able to use color prompts and a similar patch as the one in #31 for custom is-complete handlers).

One big problem is when a multiline edit is triggered, the user can move their cursor up, but it isn't moved back down again when they press enter and the command is already complete.

In the screenshot I just had the terminal set up to prompt in blue (-> and ..), and then echo the output back again in red.

I typed the first few lines, hit enter with the cursor at the bottom, and it worked fine. I hit 'up', moved the cursor to the middle of the b's, and hit enter from there, and you can see it clobbered over the input prompt and text!

How do I fix this?

[dragoncoder047]

I'm pretty sure it's somewhere in here:

https://github.com/wavesoft/local-echo/blob/8d0b7f55c5cf4b0b5f7c5132825dc5bd984bf017/lib/LocalEchoController.js#L424-L434