Clarify definition of “whitespace” / “blank characters” about klog HOT 4 CLOSED

tl;dr: in the whitespace definition, replace another character with any other characters.

Good point, that should be fixed. I’m not determined yet what protocol to follow regarding spec changes now that we track versions, because I don’t just want to commit to master and cut a new version for every tiny change. I’ll come up with a procedure.

And I would like to mention (even though this is overkill), with a custom typeface, any character could appear blank.

Appreciate the nit-pick, you are spot on actually. This phrasing was intentionally sloppy, not for a good reason but more out of laziness back then. Since the spec refers to unicode character classes for what a “letter” is, I think it’s best to base the definition of whitespace on that as well. (See https://en.wikipedia.org/wiki/Whitespace_character#Unicode).

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And I would like to mention (even though this is overkill), with a custom typeface, any character could appear blank. Eg. if I make my own font "vladde.ttf" and made the letter a appear as a blank character, this specification would allow it.

However, going this far is overkill, in my opinion.

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Also, linebreaks are technically whitespace as well, but that’s not how the term is used in the spec.

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Fixed via #119.

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