58 static struct subshell  struct
61 	struct subshell	*prev;	/* previous subshell data */  argument
62 	struct subshell	*pipe;	/* subshell where output goes to pipe on fork */  argument
106 	register struct subshell *sp = subshell_data->pipe;  in sh_subtmpfile()  argument
189 	register struct subshell *sp = subshell_data;  in sh_subfork()
219 		shp->subshell = 0;  in sh_subfork()
228 	register struct subshell	*sp;  in nv_subsaved()
230 	for(sp = (struct subshell*)subshell_data; sp; sp=sp->prev)  in nv_subsaved()
250 	register struct subshell *sp = (struct subshell*)subshell_data;  in sh_assignok()
267 		if(mp || !np->nvfun || np->nvfun->subshell>=sh.subshell)   in sh_assignok()
311 	save = shp->subshell;  in sh_assignok()
312 	shp->subshell = 0;  in sh_assignok()
315 	shp->subshell = save;  in sh_assignok()
322 static void nv_restore(struct subshell *sp)  in nv_restore()
385 	register struct subshell *sp = subshell_data;  in sh_subaliastree()
403 	register struct subshell *sp = subshell_data;  in sh_subfuntree()
436 	register struct subshell *sp = subshell_data;  in sh_subsavefd()
448 	register struct subshell *sp = subshell_data;  in sh_subjobcheck()
472 	struct subshell sub_data;  in sh_subshell()
473 	register struct subshell *sp = &sub_data;  in sh_subshell()
477 	int16_t subshell;  in sh_subshell()  local
495 	subshell = shp->subshell+1;  in sh_subshell()
496 	SH_SUBSHELLNOD->nvalue.s = subshell;  in sh_subshell()
497 	shp->subshell = subshell;  in sh_subshell()
575 	if(comsub!=2 && jmpval!=SH_JMPSUB && shp->st.trapcom[0] && shp->subshell)  in sh_subshell()
585 	if(shp->subshell==0)	/* must be child process */  in sh_subshell()
721 	if(shp->subshell)  in sh_subshell()
722 		SH_SUBSHELLNOD->nvalue.s = --shp->subshell;  in sh_subshell()
723 	subshell = shp->subshell;  in sh_subshell()