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diff --git a/bin/catsh/var.h b/bin/catsh/var.h
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--- a/bin/catsh/var.h
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@@ -1,140 +0,0 @@
-/*-
- * SPDX-License-Identifier: BSD-3-Clause
- *
- * Copyright (c) 1991, 1993
- *	The Regents of the University of California.  All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- *	@(#)var.h	8.2 (Berkeley) 5/4/95
- * $FreeBSD: releng/12.0/bin/sh/var.h 326025 2017-11-20 19:49:47Z pfg $
- */
-
-/*
- * Shell variables.
- */
-
-/* flags */
-#define VEXPORT		0x01	/* variable is exported */
-#define VREADONLY	0x02	/* variable cannot be modified */
-#define VSTRFIXED	0x04	/* variable struct is statically allocated */
-#define VTEXTFIXED	0x08	/* text is statically allocated */
-#define VSTACK		0x10	/* text is allocated on the stack */
-#define VUNSET		0x20	/* the variable is not set */
-#define VNOFUNC		0x40	/* don't call the callback function */
-#define VNOSET		0x80	/* do not set variable - just readonly test */
-#define VNOLOCAL	0x100	/* ignore forcelocal */
-
-
-struct var {
-	struct var *next;		/* next entry in hash list */
-	int flags;			/* flags are defined above */
-	int name_len;			/* length of name */
-	char *text;			/* name=value */
-	void (*func)(const char *);
-					/* function to be called when  */
-					/* the variable gets set/unset */
-};
-
-
-struct localvar {
-	struct localvar *next;		/* next local variable in list */
-	struct var *vp;			/* the variable that was made local */
-	int flags;			/* saved flags */
-	char *text;			/* saved text */
-};
-
-
-extern struct localvar *localvars;
-extern int forcelocal;
-
-extern struct var vifs;
-extern struct var vmail;
-extern struct var vmpath;
-extern struct var vpath;
-extern struct var vps0;
-extern struct var vps1;
-extern struct var vps2;
-extern struct var vps4;
-extern struct var vrps1;
-extern struct var vrps2;
-extern struct var vdisvfork;
-#ifndef NO_HISTORY
-extern struct var vhistfile;
-extern struct var vhistsize;
-extern struct var vterm;
-#endif
-
-extern int localeisutf8;
-/* The parser uses the locale that was in effect at startup. */
-extern int initial_localeisutf8;
-
-/*
- * The following macros access the values of the above variables.
- * They have to skip over the name.  They return the null string
- * for unset variables.
- */
-
-#define ifsval()	(vifs.text + 4)
-#define ifsset()	((vifs.flags & VUNSET) == 0)
-#define mailval()	(vmail.text + 5)
-#define mpathval()	(vmpath.text + 9)
-#define pathval()	(vpath.text + 5)
-#define ps0val()	(vps0.text + 4)
-#define ps1val()	(vps1.text + 4)
-#define ps2val()	(vps2.text + 4)
-#define ps4val()	(vps4.text + 4)
-#define rps1val()	(vrps1.text + 5)
-#define rps2val()	(vrps2.text + 5)
-#define optindval()	(voptind.text + 7)
-#ifndef NO_HISTORY
-#define histfileval()	(vhistfile.text + 9)
-#define histsizeval()	(vhistsize.text + 9)
-#define termval()	(vterm.text + 5)
-#endif
-
-#define mpathset()	((vmpath.flags & VUNSET) == 0)
-#define disvforkset()	((vdisvfork.flags & VUNSET) == 0)
-
-void initvar(void);
-void setvar(const char *, const char *, int);
-void setvareq(char *, int);
-struct arglist;
-void listsetvar(struct arglist *, int);
-char *lookupvar(const char *);
-char *bltinlookup(const char *, int);
-void bltinsetlocale(void);
-void bltinunsetlocale(void);
-void updatecharset(void);
-void initcharset(void);
-char **environment(void);
-int showvarscmd(int, char **);
-void mklocal(char *);
-void poplocalvars(void);
-int unsetvar(const char *);
-int setvarsafe(const char *, const char *, int);