func visualLength()

in terminal.go [432:450]

• 17 lines of code
• 7 McCabe index (conditional complexity)

func visualLength(runes []rune) int {
	inEscapeSeq := false
	length := 0

	for _, r := range runes {
		switch {
		case inEscapeSeq:
			if (r >= 'a' && r <= 'z') || (r >= 'A' && r <= 'Z') {
				inEscapeSeq = false
			}
		case r == '\x1b':
			inEscapeSeq = true
		default:
			length++
		}
	}

	return length
}