Function IsLineBreak

internal/stringutil/util.go:49–69

(ch rune)

}

func IsLineBreak(ch rune) bool {
	// ES5 7.3:
	// The ECMAScript line terminator characters are listed in Table 3.
	//     Table 3: Line Terminator Characters
	//     Code Unit Value     Name                    Formal Name
	//     \u000A              Line Feed               <LF>
	//     \u000D              Carriage Return         <CR>
	//     \u2028              Line separator          <LS>
	//     \u2029              Paragraph separator     <PS>
	// Only the characters in Table 3 are treated as line terminators. Other new line or line
	// breaking characters are treated as white space but not as line terminators.
	switch ch {
	case
		'\n',   // lineFeed
		'\r',   // carriageReturn
		0x2028, // lineSeparator
		0x2029: // paragraphSeparator
		return true
	}
	return false
}

func IsDigit(ch rune) bool {
	return ch >= '0' && ch <= '9'