[ale] Awk quoting within shell scripts (was X window to foreground)

[brian at polibyte.com (Brian Pitts)]

The wmctrl program is packaged for debian and ubuntu and seems pretty 
cool. I was trying to write a script with it when I ran into some issues 
with shell quoting and awk.

#!/bin/sh
for PID in $(pgrep $1)
do
   for WINDOW in $(wmctrl -lp | awk '/$PID/ {print $1}')
   do
     wmctrl -iR $WINDOW
   done
done

The above shows what I tried to accomplish: given a process name as the 
argument, for every PID it has raise the associated windows. Of course 
it doesn't work since $PID isn't expanded within single-quotes. However, 
I can't make awk work with double-quotes no matter how creative I get. 
My workaround is

wmctrl -lp | grep $PID | cut -d " " -f 1

but I'd love to know how to do it right with awk. Suggestions?

-Brian