[BUILTIN] Return without arguments in a trap should use status outside traps

POSIX now requires that return without arguments in a trap should
return the last command status prior to executing traps.  This
patch implements this behaviour.

Incidentally this also changes the behaviour of return without
arguments in a loop conditional to use the last exit status in
the body as opposed to the last command in the conditional when
there is one.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 1 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index 297b81a..aa230ab 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -4,6 +4,7 @@
 	* Do not allow break to break across function calls.
 	* Move common skipcount logic into skiploop.
 	* Allow return in loop conditional to set exit status.
+	* Return without arguments in a trap should use status outside traps.
 
 2014-10-03  Herbert Xu <herbert@gondor.apana.org.au>