2.11BSD/src/ucb/window/alias.h

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/*
 * @(#)alias.h	3.4 4/24/85
 */

/*
 * Copyright (c) 1983 Regents of the University of California,
 * All rights reserved.  Redistribution permitted subject to
 * the terms of the Berkeley Software License Agreement.
 */

#define alias var
#define a_name r_name
#define a_buf r_val.v_str
#define a_flags r_val.v_type

	/* a_flags bits, must not interfere with v_type values */
#define A_INUSE		0x010	/* already inuse */

#define alias_set(n, s)		var_setstr1(&alias_head, n, s)
#define alias_walk(f, a)	var_walk1(alias_head, f, a)
#define alias_unset(n)		var_unset1(&alias_head, n)
#define alias_lookup(n)		(*var_lookup1(&alias_head, n))

struct var *alias_head;