runCommand/waitForProcess don't respect text printing order whenstdout is redirected

[Bayley, Alistair]

> From: libraries-bounces at haskell.org 
> [mailto:libraries-bounces at haskell.org] On Behalf Of Alfonso Acosta
> 
> The following program behaves as expected when run on a terminal.
> 
> However, when stdout is redirected to a file, the order is no 
> longer respected:


Possibly buffering? I think the terminal has line buffering by default,
whereas files are usually block-buffered. Try changing the buffering to
line:

  hSetBuffering stdout LineBuffering

Alistair
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