zgrep: don't assume traditional behavior with signal numbers

* zgrep.in: Don't assume the exit status is the signal number plus
128, as POSIX doesn't require this.  No need to kill self; exiting
with large status is enough.  Propagate all exit statuses greater
than 1, not merely those in the range 129..143, as there's no need
to treat that range specially (and it's not portable anyway).

diff --git a/zgrep.in b/zgrep.in
index 68396dbfcbbbf8de623d53c5aa77b5c11f993e89..d0dea154734e9111b43c7c80ee6fa039b6aeca07 100644 (file)
--- a/zgrep.in
+++ b/zgrep.in
@@ -210,14 +210,11 @@ do
         (eval "$grep" 4>&-; echo $? >&4) 3>&- | sed "$sed_script" >&3 4>&-
       ) && exit $r
       r=$?
-      test $r -gt 128 && test $r -le 143 && exit $r || exit 2
+      test 1 -lt $r && exit $r || exit 2
     fi >&3 5>&-
   )
   r=$?
-  if test $r -gt 128 && test $r -le 143; then
-    kill -$(($r-128)) $$
-    exit $r
-  fi
+  test 128 -lt $r && exit $r
   test "$gzip_status" -eq 0 || test "$gzip_status" -eq 2 || r=2
   test $res -lt $r && res=$r
 done