diff -up ksh-20120801/src/cmd/ksh93/sh/xec.c.nohupfork ksh-20120801/src/cmd/ksh93/sh/xec.c

--- ksh-20120801/src/cmd/ksh93/sh/xec.c.nohupfork	2015-08-27 14:25:38.925378019 +0200

+++ ksh-20120801/src/cmd/ksh93/sh/xec.c	2015-08-27 14:30:42.267058087 +0200

@@ -2067,6 +2067,7 @@ int sh_exec(register const Shnode_t *t,

 				{

 					sh_exec(t->par.partre,flags);

 					shp->st.trapcom[0]=0;

+					sh_offoption(SH_INTERACTIVE);

 					sh_done(shp,0);

 				}

 			}