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In order to support languages with "rare" unicode chars, we cannot force encoding always from
binary
.Instead, we can try to detect if the string is an explicit ASCII encoding, so then we force from
binary
. And if not, we just encode the string with the same options:{ :invalid => :replace, :undef => :replace, :replace => '' }
.Note:
force_to_ascii
helper in tests is just to enforce to ascii for rubies > 1.8.