#!/bin/rc
# def: print C function definition
rfork e
if(~ $#* 0){
	echo 'usage: def function [ path ... ]' >[1=2]
	exit usage
}
pat='^'$1'\('
shift
if(~ $#* 0)
	*=/sys/src/lib*
*=`{rgrep -np '\.c$' $pat $* | awk -F : '{ print $1, $2 }'}
while(~ $#1 1 && ~ $#2 1){
	file=$1
	line=$2
	prev=`{echo $line - 1 | bc}
	if(~ $prev 0) prev=1
	echo $file:$line
	sed -n $prev',/^}[ 	]*$/p' $file
	shift 2
}