19 Sep
2005
19 Sep
'05
9:22 a.m.
Frederik Eaton wrote:
In addition to the stack trace problems, I found: (1) a problem where output freezes when it is being piped through 'tee' and the user presses ^S and then ^Q
That's the terminal driver; use "stty -ixon" to disable that.
If your program requires "raw" keyboard input, you should explicitly
disable canonical mode on the terminal using setTerminalAttributes.
However, note that this will also disable ^C, ^Z etc.
The GHC runtime *might* do this implicitly if you make stdin
unbuffered (I know it messes around with the terminal state if you
change the buffering for a handle which is associated with a terminal,
but I don't remember the specifics).
--
Glynn Clements