don't modify the exit status in fn sigexit; if we leave it alone the
correct status will come through.  if we modify it, lookman in
rc always prints that ugly status message.

Notes:
Sat May 10 14:43:30 EDT 2008 geoff
    not quite right; notes should cause bad exit status.
    applied a variant.


Reference: /n/sources/patch/applied/lookmanexit
Date: Fri May  9 17:38:16 CES 2008
Signed-off-by: quanstro@quanstro.net
Reviewed-by: geoff

--- /rc/bin/lookman	Fri May  9 17:37:46 2008
+++ /rc/bin/lookman	Fri May  9 17:37:45 2008
@@ -6,12 +6,11 @@
 t2=/tmp/look2.$pid
 fn sigexit sigint sighup sigterm{
 	rm -f $t1 $t2
-	exit 1
 }
 *=`{echo $*|tr A-Z a-z|tr -dc 'a-z0-9_. \012'}	# fold case, delete funny chars
 if(~ $#* 0){
 	echo Usage: lookman key ... >/fd/2
-	exit 1
+	exit usage
 }
 look $1 $index|sed 's/.*	//'|sort -u >$t1
 shift
@@ -26,5 +25,4 @@
 }
 sort $t1 | sed 's;/sys/man/;;
 	s;(.*)/(.*);man \1 \2 # \2(\1);'
-rm -f $t1 $t2
-exit 0
+exit ''