Input lag?

[s4y]

I'm running into a strange problem with pty.js 0.2.7-1 and node v0.12.2: sometimes, input (or possibly output?) gets stuck in a buffer, and doesn't come out until I hit another key. Here's my test case:

var pty = require('pty.js');

var winsize = process.stdout.getWindowSize();

term = pty.spawn(process.env.SHELL || '/bin/sh', [], {
    name: process.env.TERM || 'xterm',
    rows: winsize[1],
    cols: winsize[0]
});

process.stdin.setRawMode(true);
process.stdin.pipe(term);
term.pipe(process.stdout);

In the below gif, I type exit at a slow but regular pace: about two characters a second. But it comes out two characters at a time. Then I hit enter, and the program doesn't exit until I hit enter again several seconds later.

Any idea what's happening here?

[chjj]

I'm getting this on only my macbook. Not sure. Will investigate.

[chjj]

This problem seems to have disappeared for me. I don't know if it was updates to OSX or what, but it's gone. I can't reproduce it anymore.

[s4y]

Same. Weird stuff! It still doesn't exit when I run exit until I hit another character, but I bet that's unrelated and/or not a bug.