Weird string slicing in korean

[stevengj]

See also this discussion:

Substring function?

Not efficiently. The basic argument is that a variable-width encoding with non-consecutive codepoint indices is a good tradeoff to make (memory efficiency + speed, at the cost of less-intuitive indexing) because “give me the m-th codepoint” or “or give me the substring from codepoints m to n” is extremely uncommon in (correct) string-handling code, as opposed to “give me the substring at opaque indices I found in a previous search/loop”. That’s why, in my previous post, I asked you where your…