GlobPosixClassName

GlobPosixClassName = "alnum" | "alpha" | "blank" | "cntrl" | "digit" | "graph" | "lower" | "print" | "punct" | "space" | "upper" | "xdigit"

Defined in: packages/format-glob/src/ast.ts:43

A POSIX character class, spelled without its [: :] delimiters.

Interpreted in the C locale, the way glob(7) and fnmatch(3) specify them, so [[:alpha:]] is A-Za-z rather than every Unicode letter.