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// Copyright 2015 The Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package linkify
func digit(b byte) bool {
return b >= '0' && b <= '9'
}
func hexDigit(b byte) bool {
return digit(b) || b >= 'a' && b <= 'f' || b >= 'A' && b <= 'F'
}
func byteToLower(b byte) byte {
if b >= 'A' && b <= 'Z' {
return b - 'A' + 'a'
}
return b
}
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