#!/bin/rc
if(! ~ $#* 1){
	echo usage: $0 fn >[2=1]
	exit usage
}
res=`{grep -n '^'$1'\(' *.c | sed -n 's/^([^:]*:[^:]*).*$/\1/gp' }
ifs='
'
for(i in $res)
	echo $i
switch($#res){
case 0
	echo $1: not found >[2=1]
case 1
	plumb $res
}