Leading space not honored

[JakeWharton]

I'm not sure exactly the underlying cause, but I do have a reproducer:

echo -e "\e[30;43m RUNS \e[39;49m tests/\e[1mlogin.kt\e[22m"

The terminal looks like this:

The Asciinema looks like this:
https://asciinema.org/a/YXcL46YjbPxvrvbEiCUkW5lq7

The Asciinema JSON contains the correct output:

[1.025222, "o", "\u001b[30;43m RUNS \u001b[39;49m tests/\u001b[1mlogin.kt\u001b[22m\r\n"]

svg-term (via svg-term-cli) looks like this:

This is a gif recording of Firefox rendering. Chrome renders the same.

[JakeWharton]

Looks related to what's happening in #11?