hugo/docs/content/en/functions/countrunes.md

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countrunes	Determines the number of runes in a string excluding any whitespace.	functions	docs parent functions	counting word count	countrunes INPUT strings.CountRunes INPUT

In contrast with countwords function, which counts every word in a string, the countrunes function determines the number of runes in the content and excludes any whitespace. This has specific utility if you are dealing with CJK-like languages.

{{ "Hello, 世界" | countrunes }}
<!-- outputs a content length of 8 runes. -->