Many languages now have the ability to treat a text string as a sequence or collection of extended grapheme clusters, rather than Unicode code points. Is there an equivalent in Crystal? Examples: Ruby: String#grapheme_clusters (and String#each_grapheme_cluster). Julia: Unicode.graphemes Swift: t…

There’s no such thing yet. In the meantime you can use a regex like this one: crystal-lang/crystal/blob/18c8a35baffd6c61af72d14f99db9838805132aa/src/string.cr#L4060 bytesize.times do |i| buffer[i] = self.to_unsafe[bytesize - i - 1] end {@bytesize, @length} end …

Thanks! I’m not much of a Rubyist… would something like this be considered idiomatic? def each_grapheme(s : String, &) s.scan(/\X/) do |match| yield match[0] end end def graphemes(s : String) : Array(String) result = Array(String).new each_grapheme(s) do |g| result << g end re…

I think it’s a good API. The main reason we didn’t do it in the standard library like that is lack of time and not wanting to depend on the regex engine. Maybe also a grapheme type would be nice to have. So for now all of that is pending. There’s no good way to do Enumerator like in Ruby. There are…

Iterate over "extended grapheme clusters" in a String

Help & Support

Blacksmoke16 May 22, 2021, 4:02pm 5

@anodize See Unicode Text Segmentation - Grapheme clusters and https://github.com/crystal-lang/crystal/pull/10721

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Iterate over "extended grapheme clusters" in a String

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