4.7 base64

Base64 is an encoding that encodes three bytes into four characters, thereby increasing the size by about 33%. The alphabet used for encoding is very resistant to mangling during transit.

The following functions are defined by this library:

base64-encode-region

base64 encode the selected region. Return the length of the encoded text. Optional third argument no-line-break means do not break long lines into shorter lines.

base64-encode-string

base64 encode a string and return the result.

base64-decode-region

base64 decode the selected region. Return the length of the decoded text. If the region can’t be decoded, return nil and don’t modify the buffer.

base64-decode-string

base64 decode a string and return the result. If the string can’t be decoded, nil is returned.

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