Replace "iff" with "if and only if" #54
Merged
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iff means if and only if, but readers without that knowledge might assume this to be a spelling mistake. To me, this seems like exclusionary language that is unnecessary. Simply using "if and only if" instead should suffice.
Logger changes from ruby/ruby#4035. I had originally issued the patch on ruby/ruby to fix this in the docs. I assume making the change here will find its way into the docs for future releases.