On Tue, Apr 29, 2008 at 08:58:19PM +0100, Neil Mitchell wrote:

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How about two separate versions? In which case, what should they be called?

The current proposal feels very good. You have the "I expect it to fail" and the "I expect it to succeed". If you introduce another variant, it suddenly becomes much less clear.

I agree. The only improvement I can think of is that it'd be nicer if the first function readProcess were to put stderr in the exception thrown, but there are reasons not to do that (e.g. if stderr is very long). In any case, these are pretty simple functions to implement in terms of createProcess (I think that was what it was called), and if there are less-simple "simple" functions that would be useful, they could always be implemented outside System.Process. -- David Roundy Department of Physics Oregon State University