Looks good to me based on https://tools.ietf.org/html/rfc4648#section-5 and the "padding" section of http://en.wikipedia.org/wiki/Base64

A strict reading of RFC4648 (section 3.2 in particular) might imply that one should allow the caller of these methods to decide whether they want to generate/require padding, but in the urlsafe case it seems better to omit padding, since including it defeats the point of making the encoding urlsafe.

+1

Pushed a change, waiting for CI. I don't actually know how to run the tests locally. :/

Travis doesn't run the unit tests. make test for all tests, make test TESTS=subdir to run just the tests in that subdirectory IIRC, make help should say

Thanks so much, make test-all TESTS=test/base64 did it for me. Should be good to go now.

@mame

merged at 6b66809