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Diffstat (limited to 'src/encoding/base64/base64.go')
-rw-r--r-- | src/encoding/base64/base64.go | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/encoding/base64/base64.go b/src/encoding/base64/base64.go index 0e12d90d29..6aa8a15bdc 100644 --- a/src/encoding/base64/base64.go +++ b/src/encoding/base64/base64.go @@ -54,7 +54,8 @@ const encodeURL = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz012345678 // NewEncoding returns a new padded Encoding defined by the given alphabet, // which must be a 64-byte string that does not contain the padding character -// or CR / LF ('\r', '\n'). +// or CR / LF ('\r', '\n'). The alphabet is treated as sequence of byte values +// without any special treatment for multi-byte UTF-8. // The resulting Encoding uses the default padding character ('='), // which may be changed or disabled via WithPadding. func NewEncoding(encoder string) *Encoding { @@ -83,6 +84,8 @@ func NewEncoding(encoder string) *Encoding { // The padding character must not be '\r' or '\n', must not // be contained in the encoding's alphabet and must be a rune equal or // below '\xff'. +// Padding characters above '\x7f' are encoded as their exact byte value +// rather than using the UTF-8 representation of the codepoint. func (enc Encoding) WithPadding(padding rune) *Encoding { if padding == '\r' || padding == '\n' || padding > 0xff { panic("invalid padding") |