[Xmonad] darcs patch: make spawn redirect std* to /dev/null

[Xiao-Yong Jin]

Bruce Stephens <xmonad at cenderis.demon.co.uk> writes:

> Bruce Stephens <xmonad at cenderis.demon.co.uk> writes:
>
> [...]
>
>> That would do.  Would be cleaner, IMHO, for the logHook output to go
>> somewhere else.  Then in a normal setup you'd get the logging from
>> clients in .xsession-errors, whether those started before xmonad or by
>> xmonad.
>
> I guess the simplest way would be to use the more conventional
> arrangement of xmonad starting the program (whether dzen2 or something
> else) that displays the information?

Most of the programs by convention expect output from a
sub-shell to also contain the output from the sub-shells
within that sub-shell.  Usually xdm or alike redirect those
outputs from programs started by it and ~/.xsession and
subsequent calls to ~/.xsession-errors.  Normally, it's
useless, but when something goes wrong, that is the first
place to seek for insights.  So I would think that
redirecting the std{out,err} to /dev/null is bad.  Since we
can not force all other programs to make their own log
files, the best way I believe is that to redirect the output
of logHook.  And I would suggest using FIFOs (named pipes)
as a good solution for logHook to give its information to
various displaying programs like dzen, xmobar or something
similar.
-- 
    c/*    __o/*
    <\     * (__
    */\      <