snoyberg/conduit — comment on commit 1c33b95f1675df06494e656c30195069dbd7120a
File: conduit/Data/Conduit/Types/Source.hs line 213
By meteficha:

Also I'd write here that `@bufferSource . unbufferSource@ is not the identity function`, or using other words that `applying 'bufferSource' to the result of 'unbufferSource' does not undo the effects of 'unbufferSource'`, something along these lines.