System.IO.latin1 docs

Simon Marlow marlowsd at
Tue Jan 4 15:50:20 CET 2011

On 27/12/2010 17:51, Ross Paterson wrote:
> On Mon, Dec 27, 2010 at 09:04:41AM -0800, Mark Lentczner wrote:
>> On Dec 25, 2010, at 7:34 AM, Wolfgang Jeltsch wrote:
>>> The documentation of hSetBinaryMode says:
>>>     This has the same effect as calling hSetEncoding with latin1,
>>>     together with hSetNewlineMode with noNewlineTranslation.
>>> It seems that this sentence is wrong.
>> It seems wrong to me in intent. When a handle is in "binary" mode, it shouldn't have any encoding. If things were different, I'd want to propose that doing String I/O to such handles should fail, and that you should only be able to use ByteString with them. But I suppose that isn't viable...
> That sounds like a very good idea.  Even better, flag this error at
> compile time by having a different type for unencoded handles.

Good plan.  I'll make a proposal to add System.IO.binary.  A different 
type for binary handles is the right thing, but it's a larger 
undertaking so I don't plan to attack it right now (someone else is 
welcome to do so).


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