shouldhavebroken.js

updateSelector() {
    if (this.running) {
        return this.selector.style.display = 'none';
    }
    let lines = this.lines;
    let length = this.input.value.length;
    if (!this.running) {
        length += this.prefix.length;
    }
    length -= this.input.value.length - this.input.selectionStart;
    let moved = (length * 9) - window.innerWidth;
    if (moved > 0) { // we're wrapping the line
        lines += Math.ceil(moved / window.innerWidth);
        moved = moved % window.innerWidth;
        moved = moved / 9; // how many spaces
        length = Math.ceil(moved);
    }
    this.selector.style.left = (9 * length) + 'px';
    this.selector.style.top = ((20 * lines) + 5 - window.scrollY) + 'px';
}