So far the contenders are test x`which sdl-config | 2>&1 grep -v
^no` != x and a shell function that implements a properly quiet
which. David Snider leans towards the first and I lean towards the
second.
Probably just a typo with your pipe, but I would write the shell code
as test x$(which sdl-config 2>&1 | grep -v ^no) != x. I like the $
( ) syntax rather than the back ticks ` ` as it is a little easier to
read, IMO. To be honest, you folks are the developers, I'm just a
sysadmin with a small bit of shell scripting ability, I'd go with
whatever the two of you choose for maintainability.
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