#2228: runghc screws up terminal buffering mode and doesn't reset it
-------------------------------+--------------------------------------------
Reporter: guest | Owner:
Type: bug | Status: new
Priority: normal | Component: GHCi
Version: 6.8.2 | Severity: major
Keywords: | Testcase:
Architecture: x86_64 (amd64) | Os: Linux
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If I use runghc to run a Haskell script that reads from stdin, my terminal
gets put into a strange buffering mode. This makes the script essentially
unusable: characters are echoed twice, and Backspace and EOF don't work.
The state is not even reset afterwards, so future non-Haskell programs act
strangely as well.
{{{
$ cat cat.hs
main = putStr =<< getContents
$ stty
speed 38400 baud; line = 0;
eol = M-^?; eol2 = M-^?; swtch = M-^?;
iutf8
$ runghc cat.hs
hheelllloo
^D^?^D^D^C
cat.hs: exception :: GhcException
$ stty
speed 38400 baud; line = 0;
eol = M-^?; eol2 = M-^?; swtch = M-^?; min = 1; time = 0;
iutf8
-icanon
}}}
There is no problem if the script is compiled with ghc instead of
interpreted with runghc.
I'm using ghc 6.8.2-2ubuntu1 on hardy amd64.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2228>
GHC <http://www.haskell.org/ghc/>
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