[erlang-patches] base64:decode trailing whitespace patch for otp_src_R13B/lib/stdlib/src/base64.erl

[Christopher Stelma]

Trailing whitespace (after "=") is stripped, but the return value from
base64:strip_spaces is not in the same format expected by
base64:decode.

example of the problem:

----------------------------------------------------------------------
3> base64:decode("cXV1eA==").
<<"quux">>
4> base64:decode("cXV1eA==\n").
** exception error: no function clause matching
base64:decode([61,"=Ae1VXc"],

{-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,

-1,-1,-1,-1,-1,-1,-1,-1,...},
                                                              [])
    in function  base64:decode/1
----------------------------------------------------------------------

more specifically to the internal api:
----------------------------------------------------------------------
7> base64:strip_spaces("foo==\n", []).
[61,"=oof"]
8> base64:strip_spaces("foo==", []).
"==oof"
----------------------------------------------------------------------

patch attached.


-- 
Christopher Stelma
chris@REDACTED
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