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diff -up ksh-20120801/src/cmd/ksh93/include/name.h.memlik3 ksh-20120801/src/cmd/ksh93/include/name.h
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--- ksh-20120801/src/cmd/ksh93/include/name.h.memlik3	2012-05-10 18:33:41.000000000 +0200
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+++ ksh-20120801/src/cmd/ksh93/include/name.h	2014-01-22 14:14:32.774483776 +0100
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@@ -215,7 +215,7 @@ extern Namval_t		*nv_mount(Namval_t*, co
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 extern Namval_t		*nv_arraychild(Namval_t*, Namval_t*, int);
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 extern int		nv_compare(Dt_t*, Void_t*, Void_t*, Dtdisc_t*);
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 extern void		nv_outnode(Namval_t*,Sfio_t*, int, int);
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-extern int		nv_subsaved(Namval_t*);
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+extern int		nv_subsaved(Namval_t*,int);
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 extern void		nv_typename(Namval_t*, Sfio_t*);
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 extern void		nv_newtype(Namval_t*);
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 extern int		nv_istable(Namval_t*);
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diff -up ksh-20120801/src/cmd/ksh93/sh/name.c.memlik3 ksh-20120801/src/cmd/ksh93/sh/name.c
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--- ksh-20120801/src/cmd/ksh93/sh/name.c.memlik3	2014-01-22 14:14:32.751483987 +0100
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+++ ksh-20120801/src/cmd/ksh93/sh/name.c	2014-01-22 14:14:32.775483767 +0100
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@@ -1297,7 +1297,7 @@ void nv_delete(Namval_t* np, Dt_t *root,
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 	{
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 		if(dtdelete(root,np))
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 		{
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-			if(!(flags&NV_NOFREE) && ((flags&NV_FUNCTION) || !nv_subsaved(np)))
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+			if(!(flags&NV_NOFREE) && ((flags&NV_FUNCTION) || !nv_subsaved(np,flags&NV_TABLE)))
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 				free((void*)np);
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 		}
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 #if 0
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@@ -2461,14 +2461,14 @@ static void table_unset(Shell_t *shp, re
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 			{
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 				_nv_unset(nq,flags);
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 				npnext = (Namval_t*)dtnext(root,nq);
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-				nv_delete(nq,root,0);
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+				nv_delete(nq,root,NV_TABLE);
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 			}
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 		}
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 		npnext = (Namval_t*)dtnext(root,np);
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                if(nv_arrayptr(np))
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                        nv_putsub(np,NIL(char*),ARRAY_SCAN);
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 		_nv_unset(np,flags);
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-		nv_delete(np,root,0);
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+		nv_delete(np,root,NV_TABLE);
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 	}
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 }
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diff -up ksh-20120801/src/cmd/ksh93/sh/subshell.c.memlik3 ksh-20120801/src/cmd/ksh93/sh/subshell.c
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--- ksh-20120801/src/cmd/ksh93/sh/subshell.c.memlik3	2014-01-22 14:14:32.768483831 +0100
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+++ ksh-20120801/src/cmd/ksh93/sh/subshell.c	2014-01-22 14:20:50.810236676 +0100
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@@ -218,16 +218,28 @@ void sh_subfork(void)
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 	}
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 }
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-int nv_subsaved(register Namval_t *np)
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+int nv_subsaved(register Namval_t *np,int table)
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 {
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 	register struct subshell	*sp;
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-	register struct Link		*lp;
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+	register struct Link		*lp, *lpprev;
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 	for(sp = (struct subshell*)subshell_data; sp; sp=sp->prev)
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 	{
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-		for(lp=sp->svar; lp; lp = lp->next)
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+		lpprev = 0;
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+		for(lp=sp->svar; lp; lpprev=lp, lp=lp->next)
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 		{
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 			if(lp->node==np)
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+			{
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+				if(table&NV_TABLE)
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+				{
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+					if(lpprev)
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+						lpprev->next = lp->next;
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+					else
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+						sp->svar = lp->next;
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+					free((void*)np);
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+					free((void*)lp);
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+				}
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 				return(1);
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+			}
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 		}
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 	}
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 	return(0);