Broken $.terminal.substring when text have formatting and brackets

[jcubic]

Issue summary

Broken typing animation when echoing text that has brackets and formatting

Expected behavior

The whole text should be animated

Actual behavior

Text prints a bug chunk at once

Steps to reproduce

1. Open Gaiman Playground
2. Change echo result["def"] with echo* result["def"], 0

[jcubic]

The issue is still present. Typing animation was fixed and performance was improved but $.terminal.substring is still broken.

Use case:

function substr(text) {
    var len = $.terminal.length(text);
    var result = [];
    for (var i = 0; i < len; ++i) {
        result.push($.terminal.substring(text, i,i+1));
    }
    return result;
}

var text = '[hello] this is formatting [[;red;]text]';
console.log(substr(text));
/*
[
    "[",
    "h",
    "e",
    "l",
    "l",
    "o] this is formatting [[;red;]text]",
    "",
    " ",
    "t",
    "h",
    "i",
    "s",
    " ",
    "i",
    "s",
    " ",
    "f",
    "o",
    "r",
    "m",
    "a",
    "t",
    "t",
    "i",
    "n",
    "g",
    " ",
    "[[;red;]t]",
    "[[;red;]e]",
    "[[;red;]x]",
    "[[;red;]t]"
]

*/

I was not able to fix the issue, maybe I'm bad with Algo.