echoing of stdin

[Alastair Reid]

I think runhugs should follow the report or what ghc does.

I think it may be reasonable that interactive Haskell systems (e.g., Hugs) 
should behave differently from batch mode Haskell systems (e.g., ghc).  At 
least, that's what I concluded 5+ years ago when I looked at it thoroughly.

But, I think any difference can (and should) be restricted to changing the 
default echoing and buffering behaviour and should be changeable by calling 
hSetEcho and friends.  

--
Alastair Reid



On Friday 01 August 2003 6:06 pm, Ross Paterson wrote:
> Hugs currently turns off echoing of stdin before evaluation, and turns
> it on again afterwards.  In partial compensation, getChar echoes chars
> to stdout (which is wierd if either stdin or stdout is redirected)
> but getContents doesn't.
>
> Is there any reason to retain this behaviour, rather than treating
> stdin like any other handle?  For applications that don't want echoing,
> we could provide implementations of the System.IO functions hSetEcho,
> hGetEcho and hIsTerminalDevice.