func parsePrintfVerb()

in fmt.go [136:147]

• 11 lines of code
• 3 McCabe index (conditional complexity)

func parsePrintfVerb(s string) (int, bool) {
	// Assume only that the directive is a sequence of non-letters followed by a single letter.
	sz := 0
	var r rune
	for i := 1; i < len(s); i += sz {
		r, sz = utf8.DecodeRuneInString(s[i:])
		if unicode.IsLetter(r) {
			return i + sz, r == 'w'
		}
	}
	return len(s), false
}