Dispose of ash.

We haven't used ash for several releases. Remove ash and its
companion liblinenoise.

I've left the support for an alternative shell here for now,
but we can move that out to external/mksh later if we want.
(For now this seemed like a somewhat useful signpost to the real shell.)

Change-Id: I634c7969f6cbe375a2bc56fc1077e64888380f3d

1 files changed, 0 insertions, 425 deletions

diff --git a/sh/show.c b/sh/show.c
deleted file mode 100644
index e92aa51..0000000
--- a/sh/show.c
+++ /dev/null
@@ -1,425 +0,0 @@
-/*	$NetBSD: show.c,v 1.26 2003/11/14 10:46:13 dsl Exp $	*/
-
-/*-
- * 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.
- */
-
-#include <sys/cdefs.h>
-#ifndef lint
-#if 0
-static char sccsid[] = "@(#)show.c	8.3 (Berkeley) 5/4/95";
-#else
-__RCSID("$NetBSD: show.c,v 1.26 2003/11/14 10:46:13 dsl Exp $");
-#endif
-#endif /* not lint */
-
-#include <stdio.h>
-#include <stdarg.h>
-#include <stdlib.h>
-
-#include "shell.h"
-#include "parser.h"
-#include "nodes.h"
-#include "mystring.h"
-#include "show.h"
-#include "options.h"
-
-
-#ifdef DEBUG
-static void shtree(union node *, int, char *, FILE*);
-static void shcmd(union node *, FILE *);
-static void sharg(union node *, FILE *);
-static void indent(int, char *, FILE *);
-static void trstring(char *);
-
-
-void
-showtree(union node *n)
-{
-	trputs("showtree called\n");
-	shtree(n, 1, NULL, stdout);
-}
-
-
-static void
-shtree(union node *n, int ind, char *pfx, FILE *fp)
-{
-	struct nodelist *lp;
-	const char *s;
-
-	if (n == NULL)
-		return;
-
-	indent(ind, pfx, fp);
-	switch(n->type) {
-	case NSEMI:
-		s = "; ";
-		goto binop;
-	case NAND:
-		s = " && ";
-		goto binop;
-	case NOR:
-		s = " || ";
-binop:
-		shtree(n->nbinary.ch1, ind, NULL, fp);
-	   /*    if (ind < 0) */
-			fputs(s, fp);
-		shtree(n->nbinary.ch2, ind, NULL, fp);
-		break;
-	case NCMD:
-		shcmd(n, fp);
-		if (ind >= 0)
-			putc('\n', fp);
-		break;
-	case NPIPE:
-		for (lp = n->npipe.cmdlist ; lp ; lp = lp->next) {
-			shcmd(lp->n, fp);
-			if (lp->next)
-				fputs(" | ", fp);
-		}
-		if (n->npipe.backgnd)
-			fputs(" &", fp);
-		if (ind >= 0)
-			putc('\n', fp);
-		break;
-	default:
-		fprintf(fp, "<node type %d>", n->type);
-		if (ind >= 0)
-			putc('\n', fp);
-		break;
-	}
-}
-
-
-
-static void
-shcmd(union node *cmd, FILE *fp)
-{
-	union node *np;
-	int first;
-	const char *s;
-	int dftfd;
-
-	first = 1;
-	for (np = cmd->ncmd.args ; np ; np = np->narg.next) {
-		if (! first)
-			putchar(' ');
-		sharg(np, fp);
-		first = 0;
-	}
-	for (np = cmd->ncmd.redirect ; np ; np = np->nfile.next) {
-		if (! first)
-			putchar(' ');
-		switch (np->nfile.type) {
-			case NTO:	s = ">";  dftfd = 1; break;
-			case NCLOBBER:	s = ">|"; dftfd = 1; break;
-			case NAPPEND:	s = ">>"; dftfd = 1; break;
-			case NTOFD:	s = ">&"; dftfd = 1; break;
-			case NFROM:	s = "<";  dftfd = 0; break;
-			case NFROMFD:	s = "<&"; dftfd = 0; break;
-			case NFROMTO:	s = "<>"; dftfd = 0; break;
-			default:  	s = "*error*"; dftfd = 0; break;
-		}
-		if (np->nfile.fd != dftfd)
-			fprintf(fp, "%d", np->nfile.fd);
-		fputs(s, fp);
-		if (np->nfile.type == NTOFD || np->nfile.type == NFROMFD) {
-			fprintf(fp, "%d", np->ndup.dupfd);
-		} else {
-			sharg(np->nfile.fname, fp);
-		}
-		first = 0;
-	}
-}
-
-
-
-static void
-sharg(union node *arg, FILE *fp)
-{
-	char *p;
-	struct nodelist *bqlist;
-	int subtype;
-
-	if (arg->type != NARG) {
-		printf("<node type %d>\n", arg->type);
-		abort();
-	}
-	bqlist = arg->narg.backquote;
-	for (p = arg->narg.text ; *p ; p++) {
-		switch (*p) {
-		case CTLESC:
-			putc(*++p, fp);
-			break;
-		case CTLVAR:
-			putc('$', fp);
-			putc('{', fp);
-			subtype = *++p;
-			if (subtype == VSLENGTH)
-				putc('#', fp);
-
-			while (*p != '=')
-				putc(*p++, fp);
-
-			if (subtype & VSNUL)
-				putc(':', fp);
-
-			switch (subtype & VSTYPE) {
-			case VSNORMAL:
-				putc('}', fp);
-				break;
-			case VSMINUS:
-				putc('-', fp);
-				break;
-			case VSPLUS:
-				putc('+', fp);
-				break;
-			case VSQUESTION:
-				putc('?', fp);
-				break;
-			case VSASSIGN:
-				putc('=', fp);
-				break;
-			case VSTRIMLEFT:
-				putc('#', fp);
-				break;
-			case VSTRIMLEFTMAX:
-				putc('#', fp);
-				putc('#', fp);
-				break;
-			case VSTRIMRIGHT:
-				putc('%', fp);
-				break;
-			case VSTRIMRIGHTMAX:
-				putc('%', fp);
-				putc('%', fp);
-				break;
-			case VSLENGTH:
-				break;
-			default:
-				printf("<subtype %d>", subtype);
-			}
-			break;
-		case CTLENDVAR:
-		     putc('}', fp);
-		     break;
-		case CTLBACKQ:
-		case CTLBACKQ|CTLQUOTE:
-			putc('$', fp);
-			putc('(', fp);
-			shtree(bqlist->n, -1, NULL, fp);
-			putc(')', fp);
-			break;
-		default:
-			putc(*p, fp);
-			break;
-		}
-	}
-}
-
-
-static void
-indent(int amount, char *pfx, FILE *fp)
-{
-	int i;
-
-	for (i = 0 ; i < amount ; i++) {
-		if (pfx && i == amount - 1)
-			fputs(pfx, fp);
-		putc('\t', fp);
-	}
-}
-#endif
-
-
-
-/*
- * Debugging stuff.
- */
-
-
-FILE *tracefile;
-
-
-#ifdef DEBUG
-void
-trputc(int c)
-{
-	if (debug != 1)
-		return;
-	putc(c, tracefile);
-}
-#endif
-
-void
-trace(const char *fmt, ...)
-{
-#ifdef DEBUG
-	va_list va;
-
-	if (debug != 1)
-		return;
-	va_start(va, fmt);
-	(void) vfprintf(tracefile, fmt, va);
-	va_end(va);
-#endif
-}
-
-void
-tracev(const char *fmt, va_list va)
-{
-#ifdef DEBUG
-	if (debug != 1)
-		return;
-	(void) vfprintf(tracefile, fmt, va);
-#endif
-}
-
-
-#ifdef DEBUG
-void
-trputs(const char *s)
-{
-	if (debug != 1)
-		return;
-	fputs(s, tracefile);
-}
-
-
-static void
-trstring(char *s)
-{
-	char *p;
-	char c;
-
-	if (debug != 1)
-		return;
-	putc('"', tracefile);
-	for (p = s ; *p ; p++) {
-		switch (*p) {
-		case '\n':  c = 'n';  goto backslash;
-		case '\t':  c = 't';  goto backslash;
-		case '\r':  c = 'r';  goto backslash;
-		case '"':  c = '"';  goto backslash;
-		case '\\':  c = '\\';  goto backslash;
-		case CTLESC:  c = 'e';  goto backslash;
-		case CTLVAR:  c = 'v';  goto backslash;
-		case CTLVAR+CTLQUOTE:  c = 'V';  goto backslash;
-		case CTLBACKQ:  c = 'q';  goto backslash;
-		case CTLBACKQ+CTLQUOTE:  c = 'Q';  goto backslash;
-backslash:	  putc('\\', tracefile);
-			putc(c, tracefile);
-			break;
-		default:
-			if (*p >= ' ' && *p <= '~')
-				putc(*p, tracefile);
-			else {
-				putc('\\', tracefile);
-				putc(*p >> 6 & 03, tracefile);
-				putc(*p >> 3 & 07, tracefile);
-				putc(*p & 07, tracefile);
-			}
-			break;
-		}
-	}
-	putc('"', tracefile);
-}
-#endif
-
-
-void
-trargs(char **ap)
-{
-#ifdef DEBUG
-	if (debug != 1)
-		return;
-	while (*ap) {
-		trstring(*ap++);
-		if (*ap)
-			putc(' ', tracefile);
-		else
-			putc('\n', tracefile);
-	}
-#endif
-}
-
-
-#ifdef DEBUG
-void
-opentrace(void)
-{
-	char s[100];
-#ifdef O_APPEND
-	int flags;
-#endif
-
-	if (debug != 1) {
-		if (tracefile)
-			fflush(tracefile);
-		/* leave open because libedit might be using it */
-		return;
-	}
-#ifdef not_this_way
-	{
-		char *p;
-		if ((p = getenv("HOME")) == NULL) {
-			if (geteuid() == 0)
-				p = "/";
-			else
-				p = "/tmp";
-		}
-		scopy(p, s);
-		strcat(s, "/trace");
-	}
-#else
-	scopy("./trace", s);
-#endif /* not_this_way */
-	if (tracefile) {
-		if (!freopen(s, "a", tracefile)) {
-			fprintf(stderr, "Can't re-open %s\n", s);
-			debug = 0;
-			return;
-		}
-	} else {
-		if ((tracefile = fopen(s, "a")) == NULL) {
-			fprintf(stderr, "Can't open %s\n", s);
-			debug = 0;
-			return;
-		}
-	}
-#ifdef O_APPEND
-	if ((flags = fcntl(fileno(tracefile), F_GETFL, 0)) >= 0)
-		fcntl(fileno(tracefile), F_SETFL, flags | O_APPEND);
-#endif
-	setlinebuf(tracefile);
-	fputs("\nTracing started.\n", tracefile);
-}
-#endif /* DEBUG */