bytea_output output of base64

Currently bytea_output supports values of 'hex' (the default) and
'escape' (octal). 'hex' uses two characters per byte, while escape uses
three (ignoring the prefix overhead of \x or \[0-9].)

It is my understanding that base64 uses 1.37 characters per byte:

https://en.wikipedia.org/wiki/Base64

Is there a reason we don't support base64 as a bytea_output output
option, except that no one has implemented it?

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Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com

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