fix a bug with space

[miladkdz]

Along with the recent changes in #3707, found a bug with various cases when the string contains a space. So wrote a quick fix for it.

[bhousel]

I see the additions of || nextCode === 32

Should we maybe do /\s/.test(String.fromCharCode(nextCode)) to catch any kind of whitespace (tabs, spaces, etc)?

[miladkdz]

Are we supposed to support Tabs? Regex test might be much more expensive here.

[bhousel]

Are we supposed to support Tabs? Regex test might be much more expensive here.

I'm not sure whether it matters, so I'll merge it as-is and we can reticket later if there are issues with other whitespace characters.. Thanks!