POSIX ed version 0.6 by Andrew Moore (alm@netcom.com).

svn path=/cvs2svn/branches/unlabeled-1.1.1/; revision=16

bin/ed/Makefile

@@ -0,0 +1,7 @@
+PROG=	ed
+CFLAGS+=-I${.CURDIR} -DVI_BANG -DDES -DGNU_REGEX -DHAVE_STRING_H=1
+SRCS=	ed.c re.c buf.c cbc.c regex.c
+LINKS=	${BINDIR}/ed ${BINDIR}/red
+MLINKS=	ed.1 red.1
+
+.include <bsd.prog.mk>

bin/ed/POSIX

@@ -0,0 +1,50 @@
+This version of ed is not strictly POSIX compliant, as described in the
+POSIX 1003.2 Draft 11.2 document.  BSD commands have been implemented
+wherever they do not conflict with the POSIX standard.  For backwards
+compatibility, the POSIX rule that says a range of addresses cannot be
+used where only a single address is expected has been relaxed.
+
+The BSD commands included are:
+	1) `s' (i.e., s[rgp]*) to repeat a previous substitution,
+	2) `W' for appending text to an existing file,
+	3) `wq' for exiting after a write, and
+	4) `z' for scrolling through the buffer.
+BSD line addressing syntax (i.e., `^' and `%').  is also recognized.
+
+The POSIX interactive global commands `G' and `V' are extended to support
+multiple commands, including `a', `i' and `c'.  The command format is the
+same as for the global commands `g' and `v', i.e., one command per line
+with each line, except for the last, ending in a backslash (\).
+
+If crypt is available, files can be read and written using DES encryption.
+The `x' command prompts the user to enter a key used for encrypting/
+decrypting subsequent reads and writes.  If only a newline is entered as
+the key, then encryption is disabled.  Otherwise, a key is read in the
+same manner as a password entry.  The key remains in effect until
+encryption is disabled.  For more information on the encryption algorithm,
+see the bdes(1) man page.  Encryption/decryption should be fully compatible
+with SunOS DES.
+
+An extension to the POSIX file commands `E', `e', `r', `W' and `w' is that
+<file> arguments are processed for backslash escapes, i.e.,  any character
+preceded by a backslash is interpreted literally.  If the first unescaped
+character of a <file> argument is a bang (!), then the rest of the line
+is interpreted as a shell command, and no escape processing is performed
+by ed.
+
+The vi editor's bang command syntax is supported, i.e.,
+(addr1,addr2) !<shell-cmd> replaces the addressed lines with the output of 
+	the command <shell-cmd>.
+[rwe] !! reads/writes/edits the previous !<shell-cmd>.
+
+If ed is invoked with a name argument prefixed by a bang, then the
+remainder of the argument is interpreted as a shell command.  To invoke
+ed on a file whose name starts with bang, prefix the name with a backslash.
+
+ed runs in restricted mode if invoked as red.  This limits editing of
+files in the local directory only and prohibits !<shell-cmd> commands.
+
+Though ed is not a binary editor, it can be used (if painfully) to edit
+binary files.  To assist in binary editing, when a file containing at
+least one ASCII NUL character is written, a newline is not appended
+if it did not already contain one upon reading.

bin/ed/README

@@ -0,0 +1,22 @@
+ed is an 8-bit-clean, POSIX-compliant line editor.  It should work with
+any regular expression package that conforms to the POSIX interface
+standard, such as GNU regex(3).
+
+If reliable signals are supported (e.g., POSIX sigaction(2)), it should
+compile with little trouble.  Otherwise, the macros spl1() and spl0()
+should be redefined to disable interrupts.
+
+The following compiler directives are recognized:
+GNU_REGEX	- use with GNU regex(3)
+DES		- use to add encryption support (requires crypt(3))
+NO_REALLOC_NULL	- use if realloc(3) does not accept a NULL pointer
+BACKWARDS	- use for backwards compatibility
+
+The file `POSIX' describes extensions to and deviations from the POSIX
+standard.
+
+The ./test directory contains regression tests for ed. The README
+file in that directory explains how to run these.
+
+For a description of the ed algorithm, see Kernighan and Plauger's book
+"Software Tools in Pascal," Addison-Wesley, 1981.

bin/ed/buf.c

@@ -0,0 +1,246 @@
+/* buf.c: This file contains the scratch-file buffer rountines for the
+   ed line editor. */
+/*-
+ * Copyright (c) 1992 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Rodney Ruddock of the University of Guelph.
+ *
+ * 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. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. 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.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)buf.c	5.5 (Berkeley) 3/28/93";
+#endif /* not lint */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/file.h>
+#include <unistd.h>
+
+#include "ed.h"
+
+extern char errmsg[];
+extern line_t line0;
+
+FILE *sfp;				/* scratch file pointer */
+char *sfbuf = NULL;			/* scratch file input buffer */
+int sfbufsz = 0;			/* scratch file input buffer size */
+off_t sfseek;				/* scratch file position */
+int seek_write;				/* seek before writing */
+
+/* gettxt: get a line of text from the scratch file; return pointer
+   to the text */
+char *
+gettxt(lp)
+	line_t *lp;
+{
+	int len, ct;
+
+	if (lp == &line0)
+		return NULL;
+	seek_write = 1;				/* force seek on write */
+	/* out of position */
+	if (sfseek != lp->seek) {
+		sfseek = lp->seek;
+		if (fseek(sfp, sfseek, SEEK_SET) < 0) {
+			fprintf(stderr, "%s\n", strerror(errno));
+			sprintf(errmsg, "cannot seek temp file");
+			return NULL;
+		}
+	}
+	len = lp->len & ~ACTV;
+	CKBUF(sfbuf, sfbufsz, len + 1, NULL);
+	if ((ct = fread(sfbuf, sizeof(char), len, sfp)) <  0 || ct != len) {
+		fprintf(stderr, "%s\n", strerror(errno));
+		sprintf(errmsg, "cannot read temp file");
+		return NULL;
+	}
+	sfseek += len;				/* update file position */
+	sfbuf[len] = '\0';
+	return sfbuf;
+}
+
+
+extern long curln;
+extern long lastln;
+
+/* puttxt: write a line of text to the scratch file and add a line node
+   to the editor buffer;  return a pointer to the end of the text */
+char *
+puttxt(cs)
+	char *cs;
+{
+	line_t *lp;
+	int len, ct;
+	char *s;
+
+	if ((lp = (line_t *) malloc(sizeof(line_t))) == NULL) {
+		fprintf(stderr, "%s\n", strerror(errno));
+		sprintf(errmsg, "out of memory");
+		return NULL;
+	}
+	/* assert: cs is '\n' terminated */
+	for (s = cs; *s != '\n'; s++)
+		;
+	if (s - cs >= LINECHARS) {
+		sprintf(errmsg, "line too long");
+		return NULL;
+	}
+	len = (s - cs) & ~ACTV;
+	/* out of position */
+	if (seek_write) {
+		if (fseek(sfp, 0L, SEEK_END) < 0) {
+			fprintf(stderr, "%s\n", strerror(errno));
+			sprintf(errmsg, "cannot seek temp file");
+			return NULL;
+		}
+		sfseek = ftell(sfp);
+		seek_write = 0;
+	}
+	/* assert: spl1() */
+	if ((ct = fwrite(cs, sizeof(char), len, sfp)) < 0 || ct != len) {
+		sfseek = -1;
+		fprintf(stderr, "%s\n", strerror(errno));
+		sprintf(errmsg, "cannot write temp file");
+		return NULL;
+	}
+	lp->len = len;
+	lp->seek  = sfseek;
+	lpqueue(lp);
+	sfseek += len;			/* update file position */
+	return ++s;
+}
+
+
+/* lpqueue: add a line node in the editor buffer after the current line */
+void
+lpqueue(lp)
+	line_t *lp;
+{
+	line_t *cp;
+
+	cp = getlp(curln);				/* this getlp last! */
+	insqueue(lp, cp);
+	lastln++;
+	curln++;
+}
+
+
+/* getaddr: return line number of pointer */
+long
+getaddr(lp)
+	line_t *lp;
+{
+	line_t *cp = &line0;
+	long n = 0;
+
+	while (cp != lp && (cp = cp->next) != &line0)
+		n++;
+	return (cp != &line0) ? n : 0;
+}
+
+
+/* getlp: return pointer to a line node in the editor buffer */
+line_t *
+getlp(n)
+	long n;
+{
+	static line_t *lp = &line0;
+	static long on = 0;
+
+	spl1();
+	if (n > on)
+		if (n <= (on + lastln) >> 1)
+			for (; on < n; on++)
+				lp = lp->next;
+		else {
+			lp = line0.prev;
+			for (on = lastln; on > n; on--)
+				lp = lp->prev;
+		}
+	else
+		if (n >= on >> 1)
+			for (; on > n; on--)
+				lp = lp->prev;
+		else {
+			lp = &line0;
+			for (on = 0; on < n; on++)
+				lp = lp->next;
+		}
+	spl0();
+	return lp;
+}
+
+
+char sfn[15] = "";				/* scratch file name */
+
+/* sbopen: open scratch file */
+sbopen()
+{
+	strcpy(sfn, "/tmp/ed.XXXXXX");
+	if (mktemp(sfn) == NULL || (sfp = fopen(sfn, "w+")) == NULL) {
+		fprintf(stderr, "%s: %s\n", sfn, strerror(errno));
+		sprintf(errmsg, "cannot open temp file");
+		return ERR;
+	}
+	return 0;
+}
+
+
+/* sbclose: close scratch file */
+sbclose()
+{
+	if (sfp) {
+		if (fclose(sfp) < 0) {
+			fprintf(stderr, "%s: %s\n", sfn, strerror(errno));
+			sprintf(errmsg, "cannot close temp file");
+			return ERR;
+		}
+		sfp = NULL;
+		unlink(sfn);
+	}
+	sfseek = seek_write = 0;
+	return 0;
+}
+
+
+/* quit: remove scratch file and exit */
+void
+quit(n)
+	int n;
+{
+	if (sfp) {
+		fclose(sfp);
+		unlink(sfn);
+	}
+	exit(n);
+}

bin/ed/cbc.c

@@ -0,0 +1,435 @@
+/* cbc.c: This file contains the encryption routines for the ed line editor */
+/*-
+ * Copyright (c) 1991 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Matt Bishop of Dartmouth College.
+ *
+ * The United States Government has rights in this work pursuant
+ * to contract no. NAG 2-680 between the National Aeronautics and
+ * Space Administration and Dartmouth College.
+ *
+ * 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. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. 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.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)cbc.c	5.5 (Berkeley) 6/27/91";
+#endif /* not lint */
+
+/* Author: Matt Bishop
+ *	   Department of Mathematics and Computer Science
+ *	   Dartmouth College
+ *	   Hanover, NH  03755
+ * Email:  Matt.Bishop@dartmouth.edu
+ *	   ...!decvax!dartvax!Matt.Bishop
+ *
+ * See Technical Report PCS-TR91-158, Department of Mathematics and Computer
+ * Science, Dartmouth College, for a detailed description of the implemen-
+ * tation and differences between it and Sun's.  The DES is described in
+ * FIPS PUB 46, and the modes in FIPS PUB 81 (see either the manual page
+ * or the technical report for a complete reference).
+ */
+
+#include <errno.h>
+#include <pwd.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <ctype.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+
+#include "ed.h"
+
+/*
+ * Define a divisor for rand() that yields a uniform distribution in the
+ * range 0-255.
+ */
+#define	RAND_DIV (((unsigned) RAND_MAX + 1) >> 8)
+
+/*
+ * BSD and System V systems offer special library calls that do
+ * block moves and fills, so if possible we take advantage of them
+ */
+#define	MEMCPY(dest,src,len)	memcpy((dest),(src),(len))
+#define	MEMZERO(dest,len)	memset((dest), 0, (len))
+
+/* Hide the calls to the primitive encryption routines. */
+#define	DES_KEY(buf) \
+	if (des_setkey(buf)) \
+		err("des_setkey");
+#define	DES_XFORM(buf) \
+	if (des_cipher(buf, buf, 0L, (inverse ? -1 : 1))) \
+		err("des_cipher");
+
+/*
+ * read/write - no error checking
+ */
+#define	READ(buf, n, fp)	fread(buf, sizeof(char), n, fp)
+#define WRITE(buf, n, fp)	fwrite(buf, sizeof(char), n, fp)
+
+/*
+ * some things to make references easier
+ */
+typedef char Desbuf[8];
+#define	CHAR(x,i)	(x[i])
+#define	UCHAR(x,i)	(x[i])
+#define	BUFFER(x)	(x)
+#define	UBUFFER(x)	(x)
+
+/*
+ * global variables and related macros
+ */
+
+enum { 					/* encrypt, decrypt, authenticate */
+	MODE_ENCRYPT, MODE_DECRYPT, MODE_AUTHENTICATE
+} mode = MODE_ENCRYPT;
+
+Desbuf ivec;				/* initialization vector */
+Desbuf pvec;				/* padding vector */
+char bits[] = {				/* used to extract bits from a char */
+	'\200', '\100', '\040', '\020', '\010', '\004', '\002', '\001'
+};
+int pflag;				/* 1 to preserve parity bits */
+
+char des_buf[8];		/* shared buffer for desgetc/desputc */
+int des_ct = 0;			/* count for desgetc/desputc */
+int des_n = 0;			/* index for desputc/desgetc */
+
+
+/* desinit: initialize DES */
+void
+desinit()
+{
+#ifdef DES
+	int i;
+
+	des_ct = des_n = 0;
+
+	/* initialize the initialization vctor */
+	MEMZERO(ivec, 8);
+
+	/* intialize the padding vector */
+	srand((unsigned) time((time_t *) 0));
+	for (i = 0; i < 8; i++)
+		CHAR(pvec, i) = (char) (rand()/RAND_DIV);
+#endif
+}
+
+
+/* desgetc: return next char in an encrypted file */
+desgetc(fp)
+	FILE *fp;
+{
+#ifdef DES
+	if (des_n >= des_ct) {
+		des_n = 0;
+		des_ct = cbcdec(des_buf, fp);
+	}
+	return (des_ct > 0) ? des_buf[des_n++] : EOF;
+#endif
+}
+
+
+/* desputc: write a char to an encrypted file; return char written */
+desputc(c, fp)
+	int c;
+	FILE *fp;
+{
+#ifdef DES
+	if (des_n == sizeof des_buf) {
+		des_ct = cbcenc(des_buf, des_n, fp);
+		des_n = 0;
+	}
+	return (des_ct >= 0) ? (des_buf[des_n++] = c) : EOF;
+#endif
+}
+
+
+/* desflush: flush an encrypted file's output; return status */
+desflush(fp)
+	FILE *fp;
+{
+#ifdef DES
+	if (des_n == sizeof des_buf) {
+		des_ct = cbcenc(des_buf, des_n, fp);
+		des_n = 0;
+	}
+	return (des_ct >= 0 && cbcenc(des_buf, des_n, fp) >= 0) ? 0 : EOF;
+#endif
+}
+
+#ifdef DES
+/*
+ * get keyword from tty or stdin
+ */
+getkey()
+{
+	register char *p;		/* used to obtain the key */
+	Desbuf msgbuf;			/* I/O buffer */
+
+	/*
+	 * get the key
+	 */
+	if (*(p = getpass("Enter key: "))) {
+
+		/*
+		 * copy it, nul-padded, into the key area
+		 */
+		cvtkey(BUFFER(msgbuf), p);
+		MEMZERO(p, _PASSWORD_LEN);
+		makekey(msgbuf);
+		MEMZERO(msgbuf, sizeof msgbuf);
+		return 1;
+	}
+	return 0;
+}
+
+
+extern char errmsg[];
+
+/*
+ * print a warning message and, possibly, terminate
+ */
+void
+err(s)
+	char *s;		/* the message */
+{
+	(void)sprintf(errmsg, "%s", s ? s : strerror(errno));
+}
+
+/*
+ * map a hex character to an integer
+ */
+tobinhex(c, radix)
+	int c;			/* char to be converted */
+	int radix;		/* base (2 to 16) */
+{
+	switch(c) {
+	case '0':		return(0x0);
+	case '1':		return(0x1);
+	case '2':		return(radix > 2 ? 0x2 : -1);
+	case '3':		return(radix > 3 ? 0x3 : -1);
+	case '4':		return(radix > 4 ? 0x4 : -1);
+	case '5':		return(radix > 5 ? 0x5 : -1);
+	case '6':		return(radix > 6 ? 0x6 : -1);
+	case '7':		return(radix > 7 ? 0x7 : -1);
+	case '8':		return(radix > 8 ? 0x8 : -1);
+	case '9':		return(radix > 9 ? 0x9 : -1);
+	case 'A': case 'a':	return(radix > 10 ? 0xa : -1);
+	case 'B': case 'b':	return(radix > 11 ? 0xb : -1);
+	case 'C': case 'c':	return(radix > 12 ? 0xc : -1);
+	case 'D': case 'd':	return(radix > 13 ? 0xd : -1);
+	case 'E': case 'e':	return(radix > 14 ? 0xe : -1);
+	case 'F': case 'f':	return(radix > 15 ? 0xf : -1);
+	}
+	/*
+	 * invalid character
+	 */
+	return(-1);
+}
+
+/*
+ * convert the key to a bit pattern
+ */
+void
+cvtkey(obuf, ibuf)
+	char *obuf;			/* bit pattern */
+	char *ibuf;			/* the key itself */
+{
+	register int i, j;		/* counter in a for loop */
+	int nbuf[64];			/* used for hex/key translation */
+
+	/*
+	 * leading '0x' or '0X' == hex key
+	 */
+	if (ibuf[0] == '0' && (ibuf[1] == 'x' || ibuf[1] == 'X')) {
+		ibuf = &ibuf[2];
+		/*
+		 * now translate it, bombing on any illegal hex digit
+		 */
+		for (i = 0; ibuf[i] && i < 16; i++)
+			if ((nbuf[i] = tobinhex((int) ibuf[i], 16)) == -1)
+				err("bad hex digit in key");
+		while (i < 16)
+			nbuf[i++] = 0;
+		for (i = 0; i < 8; i++)
+			obuf[i] =
+			    ((nbuf[2*i]&0xf)<<4) | (nbuf[2*i+1]&0xf);
+		/* preserve parity bits */
+		pflag = 1;
+		return;
+	}
+	/*
+	 * leading '0b' or '0B' == binary key
+	 */
+	if (ibuf[0] == '0' && (ibuf[1] == 'b' || ibuf[1] == 'B')) {
+		ibuf = &ibuf[2];
+		/*
+		 * now translate it, bombing on any illegal binary digit
+		 */
+		for (i = 0; ibuf[i] && i < 16; i++)
+			if ((nbuf[i] = tobinhex((int) ibuf[i], 2)) == -1)
+				err("bad binary digit in key");
+		while (i < 64)
+			nbuf[i++] = 0;
+		for (i = 0; i < 8; i++)
+			for (j = 0; j < 8; j++)
+				obuf[i] = (obuf[i]<<1)|nbuf[8*i+j];
+		/* preserve parity bits */
+		pflag = 1;
+		return;
+	}
+	/*
+	 * no special leader -- ASCII
+	 */
+	(void)strncpy(obuf, ibuf, 8);
+}
+
+/*****************
+ * DES FUNCTIONS *
+ *****************/
+/*
+ * This sets the DES key and (if you're using the deszip version)
+ * the direction of the transformation.  This uses the Sun
+ * to map the 64-bit key onto the 56 bits that the key schedule
+ * generation routines use: the old way, which just uses the user-
+ * supplied 64 bits as is, and the new way, which resets the parity
+ * bit to be the same as the low-order bit in each character.  The
+ * new way generates a greater variety of key schedules, since many
+ * systems set the parity (high) bit of each character to 0, and the
+ * DES ignores the low order bit of each character.
+ */
+void
+makekey(buf)
+	Desbuf buf;				/* key block */
+{
+	register int i, j;			/* counter in a for loop */
+	register int par;			/* parity counter */
+
+	/*
+	 * if the parity is not preserved, flip it
+	 */
+	if (!pflag) {
+		for (i = 0; i < 8; i++) {
+			par = 0;
+			for (j = 1; j < 8; j++)
+				if ((bits[j]&UCHAR(buf, i)) != 0)
+					par++;
+			if ((par&01) == 01)
+				UCHAR(buf, i) = UCHAR(buf, i)&0177;
+			else
+				UCHAR(buf, i) = (UCHAR(buf, i)&0177)|0200;
+		}
+	}
+
+	DES_KEY(UBUFFER(buf));
+}
+
+
+/*
+ * This encrypts using the Cipher Block Chaining mode of DES
+ */
+cbcenc(msgbuf, n, fp)
+	char *msgbuf;
+	int n;
+	FILE *fp;
+{
+	int inverse = 0;	/* 0 to encrypt, 1 to decrypt */
+
+	/*
+	 * do the transformation
+	 */
+	if (n == 8) {
+		for (n = 0; n < 8; n++)
+			CHAR(msgbuf, n) ^= CHAR(ivec, n);
+		DES_XFORM(UBUFFER(msgbuf));
+		MEMCPY(BUFFER(ivec), BUFFER(msgbuf), 8);
+		return WRITE(BUFFER(msgbuf), 8, fp);
+	}
+	/*
+	 * at EOF or last block -- in either case, the last byte contains
+	 * the character representation of the number of bytes in it
+	 */
+/*
+	MEMZERO(msgbuf +  n, 8 - n);
+*/
+	/*
+	 *  Pad the last block randomly
+	 */
+	(void)MEMCPY(BUFFER(msgbuf + n), BUFFER(pvec), 8 - n);
+	CHAR(msgbuf, 7) = n;
+	for (n = 0; n < 8; n++)
+		CHAR(msgbuf, n) ^= CHAR(ivec, n);
+	DES_XFORM(UBUFFER(msgbuf));
+	return WRITE(BUFFER(msgbuf), 8, fp);
+}
+
+/*
+ * This decrypts using the Cipher Block Chaining mode of DES
+ */
+cbcdec(msgbuf, fp)
+	char *msgbuf;		/* I/O buffer */
+	FILE *fp;			/* input file descriptor */
+{
+	Desbuf ibuf;	/* temp buffer for initialization vector */
+	register int n;		/* number of bytes actually read */
+	register int c;		/* used to test for EOF */
+	int inverse = 1;	/* 0 to encrypt, 1 to decrypt */
+
+	if ((n = READ(BUFFER(msgbuf), 8, fp)) == 8) {
+		/*
+		 * do the transformation
+		 */
+		MEMCPY(BUFFER(ibuf), BUFFER(msgbuf), 8);
+		DES_XFORM(UBUFFER(msgbuf));
+		for (c = 0; c < 8; c++)
+			UCHAR(msgbuf, c) ^= UCHAR(ivec, c);
+		MEMCPY(BUFFER(ivec), BUFFER(ibuf), 8);
+		/*
+		 * if the last one, handle it specially
+		 */
+		if ((c = fgetc(fp)) == EOF) {
+			n = CHAR(msgbuf, 7);
+			if (n < 0 || n > 7) {
+				err("decryption failed (block corrupted)");
+				return EOF;
+			}
+		} else
+			(void)ungetc(c, fp);
+		return n;
+	}
+	if (n > 0)
+		err("decryption failed (incomplete block)");
+	else if (n < 0)
+		err("cannot read file");
+	return EOF;
+}
+#endif	/* DES */

bin/ed/ed.1

@@ -0,0 +1,980 @@
+.TH ED 1 "21 May 1993"
+.SH NAME
+ed, red \- text editor
+.SH SYNOPSIS
+ed [-] [-sx] [-p \fIstring\fR] [\fIfile\fR]
+.LP
+red [-] [-sx] [-p \fIstring\fR] [\fIfile\fR]
+.SH DESCRIPTION
+.B ed
+is a line-oriented text editor.
+It is used to create, display, modify and otherwise manipulate text
+files.
+.B red
+is a restricted
+.BR ed :
+it can only edit files in the current
+directory and cannot execute shell commands.
+
+If invoked with a
+.I file
+argument, then a copy of
+.I file
+is read into the editor's buffer.
+Changes are made to this copy and not directly to
+.I file
+itself.
+Upon quitting
+.BR ed ,
+any changes not explicitly saved  with a
+.I `w'
+command are lost.
+
+Editing is done in two distinct modes:
+.I command
+and
+.IR input .
+When first invoked,
+.B ed
+is in command mode.
+In this mode commands are read from the standard input and
+executed to manipulate the contents of the editor buffer.
+A typical command might look like:
+.sp
+.RS
+,s/\fIold\fR/\fInew\fR/g
+.RE
+.sp
+which replaces all occurences of the string
+.I old
+with
+.IR new .
+
+When an input command, such as
+.I `a'
+(append),
+.I `i'
+(insert) or
+.I `c'
+(change), is given,
+.B ed
+enters input mode.  This is the primary means
+of adding text to a file.
+In this mode, no commands are available;
+instead, the standard input is written
+directly to the editor buffer.  Lines consist of text up to and
+including a
+.IR newline
+character.
+Input mode is terminated by
+entering a single period  (\fI.\fR) on a line.
+
+All
+.B ed
+commands operate on whole lines or ranges of lines; e.g.,
+the
+.I `d'
+command deletes lines; the
+.I `m'
+command moves lines, and so on.
+It is possible to modify only a portion of a line by means of replacement,
+as in the example above.  However even here, the
+.I `s'
+command is applied to whole lines at a time.
+
+In general,
+.B ed
+commands consist of zero or more line addresses, followed by a single
+character command and possibly additional parameters; i.e.,
+commands have the structure:
+.sp
+.RS
+.I [address [,address]]command[parameters]
+.RE
+.sp
+The address(es) indicate the line(s) to be affected by the command.
+If fewer addresses are given than the command accepts, then default
+addresses are supplied.
+
+.SS OPTIONS
+.TP 8
+-s
+Suppresses diagnostics. This should be used if
+.BR ed 's
+standard input is from a script.
+
+.TP 8
+-x
+Prompts for an encryption key to be used in subsequent reads and writes
+(see the
+.I `x'
+command).
+
+.TP 8
+.RI \-p \ string
+Specifies a command prompt.  This may be toggled on and off with the
+.I `P'
+command.
+
+.TP 8
+.I file
+Specifies the name of a file to read.  If
+.I file
+is prefixed with a
+bang (!), then it is interpreted as a shell command.  In this case,
+what is read is
+the standard output of
+.I file
+executed via
+.IR sh (1).
+To read a file whose name begins with a bang, prefix the
+name with a backslash (\\).
+The default filename is set to
+.I file
+only if it is not prefixed with a bang.
+
+.SS LINE ADDRESSING
+An address represents the number of line in the buffer.
+.B ed
+maintains a
+.I current address
+which is
+typically supplied to commands as the default address when none is specified.
+When a file is first read,  the current address is set to the last line
+of the file.  In general, the current address is set to the last line
+affected by a command.
+
+A line address is
+constructed from one of the bases in the list below, optionally followed
+by a numeric offset.  The offset may include any combination
+of digits, operators (i.e.,
+.IR + ,
+.I -
+and
+.IR ^ )
+and whitespace.
+Addresses are read from left to right, and their values are computed
+relative to the current address.
+
+One exception to the rule that addresses represent line numbers is the
+address
+.I 0
+(zero).
+This means "before the first line,"
+and is legal wherever it makes sense.
+
+An address range is two addresses separated either by a comma or
+semi-colon. The value of the first address in a range cannot exceed the
+value of the the second.  If an
+.IR n- tuple
+of addresses is given where
+.I n > 2,
+then the corresponding range is determined by the last two addresses
+in the
+.IR n- tuple.
+If only one address is expected, then the last
+address is used.
+
+Each address in a comma-delimited range is interpreted relative to the
+current address.  In a semi-colon-delimited range, the first address is
+used to set the current address, and the second address is interpreted
+relative to the first.
+
+The following address symbols are recognized.
+
+.TP 8
+\fR.\fR
+The current line (address) in the buffer.
+
+.TP 8
+$
+The last line in the buffer.
+
+.TP 8
+n
+The
+.IR n th,
+line in the buffer
+where
+.I n
+is a number in the range
+.I [0,$].
+
+.TP 8
+- or ^
+The previous line.
+This is equivalent to
+.I -1
+and may be repeated with cumulative effect.
+
+.TP 8
+-\fIn\fR or ^\fIn\fR
+The
+.IR n th
+previous line, where
+.I n
+is a non-negative number.
+
+.TP 8
++
+The
+next line.
+This is equivalent to
+.I +1
+and may be repeated with cumulative effect.
+
+.TP 8
++\fIn\fR or whitespace\fIn\fR
+The
+.IR n th
+next line, where
+.I n
+is a non-negative number.
+.I whitespace
+followed by a number
+.I n
+is interpreted as
+.IR +n .
+
+.TP 8
+, \fRor\fB %
+The first through last lines in the buffer.  This is equivalent to
+the address range
+.I 1,$.
+
+.TP 8
+;
+The
+current through last lines in the buffer.  This is equivalent to
+the address range
+.I .,$.
+
+.TP 8
+.RI / re/
+The
+next line containing the regular expression
+.IR re .
+The search wraps to the beginning of the buffer and continues down to the
+current line, if necessary.
+// repeats the last search.
+
+.TP 8
+.RI ? re?
+The
+previous line containing the regular expression
+.IR re .
+The search wraps to the end of the buffer and continues up to the
+current line, if necessary.
+?? repeats the last search.
+
+.TP 8
+.RI \' lc
+The
+line previously marked by a
+.I `k'
+(mark) command, where
+.I lc
+is a lower case letter.
+
+.SS REGULAR EXPRESSIONS
+Regular expressions are patterns used in selecting text.
+For example, the
+.B ed
+command
+.sp
+.RS
+g/\fIstring\fR/
+.RE
+.sp
+prints all lines containing
+.IR string .
+Regular expressions are also
+used by the
+.I `s'
+command for selecting old text to be replaced with new.
+
+In addition to a specifying string literals, regular expressions can
+represent
+classes of strings.  Strings thus represented are said to be matched
+by the corresponding regular expression.
+If it is possible for a regular expression
+to match several strings in a line, then the left-most longest match is
+the one selected.
+
+The following symbols are used in constructing regular expressions:
+
+.TP 8
+c
+Any character
+.I c
+not listed below, including `{', '}', `(', `)', `<' and `>',
+matches itself.
+
+.TP 8
+\fR\\\fIc\fR
+Any backslash-escaped character
+.IR c ,
+except for `{', '}', `(', `)', `<' and `>',
+matches itself.
+
+.TP 8
+\fR.\fR
+Matches any single character.
+
+.TP 8
+.I [char-class]
+Matches any single character in
+.IR char-class .
+To include a  `]'
+in
+.IR char-class ,
+it must be the first character.
+A range of characters may be specified by separating the end characters
+of the range with a `-', e.g., `a-z' specifies the lower case characters.
+The following literal expressions can also be used in
+.I char-class
+to specify sets of characters:
+.sp
+\ \ [:alnum:]\ \ [:cntrl:]\ \ [:lower:]\ \ [:space:]
+.PD 0
+\ \ [:alpha:]\ \ [:digit:]\ \ [:print:]\ \ [:upper:]
+.PD 0
+\ \ [:blank:]\ \ [:graph:]\ \ [:punct:]\ \ [:xdigit:]
+.sp
+If `-' appears as the first or last
+character of
+.IR char-class ,
+then it matches itself.
+All other characters in
+.I char-class
+match themselves.
+.sp
+Patterns in
+.I char-class
+of the form:
+.sp
+\ \ [.\fIcol-elm\fR.] or,
+.PD 0
+\ \ [=\fIcol-elm\fR=]
+.sp
+where
+.I col-elm
+is a
+.I collating element
+are interpreted according to
+.IR locale (5)
+(not currently supported).
+See
+.IR regex (3)
+for an explanation of these constructs.
+
+.TP 8
+[^\fIchar-class\fR]
+Matches any single character, other than newline, not in
+.IR char-class .
+.IR char-class
+is defined
+as above.
+
+.TP 8
+^
+If `^' is the first character of a regular expression, then it
+anchors the regular expression to the beginning of a line.
+Otherwise, it matches itself.
+
+.TP 8
+$
+If `$' is the last character of a regular expression, it
+anchors the regular expression to the end of a line.
+Otherwise, it matches itself.
+
+.TP 8
+\fR\\<\fR
+Anchors the single character regular expression or subexpression
+immediately following it to the beginning of a word.
+(This may not be available)
+
+.TP 8
+\fR\\>\fR
+Anchors the single character regular expression or subexpression
+immediately following it to the end of a word.
+(This may not be available)
+
+.TP 8
+\fR\\(\fIre\fR\\)\fR
+Defines a subexpression
+.IR re .
+Subexpressions may be nested.
+A subsequent backreference of the form \fI`\\n'\fR, where
+.I n
+is a number in the range [1,9], expands to the text matched by the
+.IR n th
+subexpression.
+For example, the regular expression `\\(.*\\)\\1' matches any string
+consisting of identical adjacent substrings.
+Subexpressions are ordered relative to
+their left delimiter.
+
+.TP 8
+*
+Matches the single character regular expression or subexpression
+immediately preceding it zero or more times.  If '*' is the first
+character of a regular expression or subexpression, then it matches
+itself.  The `*' operator sometimes yields unexpected results.
+For example, the regular expression `b*' matches the beginning of
+the string `abbb' (as opposed to the substring `bbb'), since a null match
+is the only left-most match.
+
+.TP 8
+\fR\\{\fIn,m\fR\\}\fR or \fR\\{\fIn,\fR\\}\fR or \fR\\{\fIn\fR\\}\fR
+Matches the single character regular expression or subexpression
+immediately preceding it at least
+.I n
+and at most
+.I m
+times.
+If
+.I m
+is omitted, then it matches at least
+.I n
+times.
+If the comma is also omitted, then it matches exactly
+.I n
+times.
+
+.LP
+Additional regular expression operators may be defined depending on the
+particular
+.IR regex (3)
+implementation.
+
+.SS COMMANDS
+All
+.B ed
+commands are single characters, though some require additonal parameters.
+If a command's parameters extend over several lines, then
+each line except for the last
+must be terminated with a backslash (\\).
+
+In general, at most one command is allowed per line.
+However, most commands accept a print suffix, which is any of
+.I `p'
+(print),
+.I `l'
+(list) ,
+or
+.I `n'
+(enumerate),
+to print the last line affected by the command.
+
+An interrupt (typically ^C) has the effect of aborting the current command
+and returning the editor to command mode.
+
+.B ed
+recognizes the following commands.  The commands are shown together with
+the default address or address range supplied if none is
+specified (in parenthesis).
+
+.TP 8
+(.)a
+Appends text to the buffer after the addressed line.
+Text is entered in input mode.
+The current address is set to last line entered.
+
+.TP 8
+(.,.)c
+Changes lines in the buffer.  The addressed lines are deleted
+from the buffer, and text is appended in their place.
+Text is entered in input mode.
+The current address is set to last line entered.
+
+.TP 8
+(.,.)d
+Deletes the addressed lines from the buffer.
+If there is a line after the deleted range, then the current address is set
+to this line. Otherwise the current address is set to the line
+before the deleted range.
+
+.TP 8
+.RI e \ file
+Edits
+.IR file ,
+and sets the default filename.
+If
+.I file
+is not specified, then the  default filename is used.
+Any lines in the buffer are deleted before
+the new file is read.
+The current address is set to the last line read.
+
+.TP 8
+.RI e \ !command
+Edits the standard output of
+.IR `!command' ,
+executed as described below.
+The default filename is unchanged.
+Any lines in the buffer are deleted before the output of
+.I command
+is read.
+The current address is set to the last line read.
+
+.TP 8
+.RI E \ file
+Edits
+.I file
+unconditionally.
+This is similar to the
+.I e
+command,
+except that unwritten changes are discarded without warning.
+The current address is set to the last line read.
+
+.TP 8
+.RI f \ file
+Sets the default filename to
+.IR file .
+If
+.I file
+is not specified, then the default unescaped filename is printed.
+
+.TP 8
+.RI (1,$)g /re/command-list
+Applies
+.I command-list
+to each of the addressed lines matching a regular expression
+.IR re .
+The current address is set to the
+line currently matched before
+.I command-list
+is executed.
+At the end of the
+.I `g'
+command, the current address is set to the last line affected by
+.IR command-list .
+
+Each command in
+.I command-list
+must be on a separate line,
+and every line except for the last must be terminated by a backslash
+(\\).
+Any commands are allowed, except for
+.IR `g' ,
+.IR `G' ,
+.IR `v' ,
+and
+.IR `V' .
+A newline alone in
+.I command-list
+is equivalent to a 
+.I `p'
+command.
+
+.TP 8
+.RI (1,$)G /re/
+Interactively edits the addressed lines matching a regular expression
+.IR re.
+For each matching line,
+the line is printed,
+the current address is set,
+and the user is prompted to enter a 
+.IR command-list .
+At the end of the
+.I `G'
+command, the current address
+is set to the last line affected by (the last)
+.IR command-list .
+
+The format of
+.I command-list
+is the same as that of the
+.I `g'
+command.  A newline alone acts as a null command list.
+A single `&' repeats the last non-null command list.
+
+.TP 8
+H
+Toggles the printing of error explanations.
+By default, explanations are not printed.
+It is recommended that ed scripts begin with this command to
+aid in debugging.
+
+.TP 8
+h
+Prints an explanation of the last error.
+
+.TP 8
+(.)i
+Inserts text in the buffer before the current line.
+Text is entered in input mode.
+The current address is set to the last line entered.
+
+.TP 8
+(.,.+1)j
+Joins the addressed lines.  The addressed lines are
+deleted from the buffer and replaced by a single
+line containing their joined text.
+The current address is set to the resultant line.
+
+.TP 8
+.RI (.)k lc
+Marks a line with a lower case letter
+.IR lc .
+The  line can then be addressed as
+.I 'lc
+(i.e., a single quote followed by
+.I lc
+) in subsequent commands.  The mark is not cleared until the line is
+deleted or otherwise modified.
+
+.TP 8
+(.,.)l
+Prints the addressed lines unambiguously.
+The current address is set to the last line
+printed.
+
+.TP 8
+(.,.)m(.)
+Moves lines in the buffer.  The addressed lines are moved to after the
+right-hand destination address, which may be the address
+.IR 0
+(zero).
+The current address is set to the
+last line moved.
+
+.TP 8
+(.,.)n
+Prints the addressed lines along with
+their line numbers.  The current address is set to the last line
+printed.
+
+.TP 8
+(.,.)p
+Prints the addressed lines. The current address is set to the last line
+printed.
+
+.TP 8
+P
+Toggles the command prompt on and off.
+Unless a prompt was specified by with command-line option
+\fI-p string\fR, the command prompt is by default turned off.
+
+.TP 8
+q
+Quits ed.
+
+.TP 8
+Q
+Quits ed unconditionally.
+This is similar to the
+.I q
+command,
+except that unwritten changes are discarded without warning.
+
+.TP 8
+.RI ($)r \ file
+Reads
+.I file
+to after the addressed line.  If
+.I file
+is not specified, then the default
+filename is used.  If there was no default filename prior to the command,
+then the default filename is set to
+.IR file .
+Otherwise, the default filename is unchanged.
+The current address is set to the last line read.
+
+.TP 8
+.RI ($)r \ !command
+Reads
+to after the addressed line
+the standard output of
+.IR `!command' ,
+executed as described below.
+The default filename is unchanged.
+The current address is set to the last line read.
+
+.HP
+.RI (.,.)s /re/replacement/
+.PD 0
+.HP
+.RI (.,.)s  /re/replacement/\fRg\fR
+.HP
+.RI (.,.)s  /re/replacement/n
+.br
+Replaces text in the addressed lines
+matching a regular expression
+.I re
+with
+.IR replacement .
+By default, only the first match in each line is replaced.
+The
+.I `g'
+(global) suffix causes every match to be replaced.
+The
+.I `n'
+suffix, where
+.I n
+is a postive number, causes only the
+.IR n th
+match to be replaced.
+It is an error if no substitutions are performed on any of the addressed
+lines.
+The current address is set the last line affected.
+
+.I re
+and
+.I replacement
+may be delimited by any character other than space and newline.
+If one or two of the last delimiters is omitted, then the last line
+affected is printed as though the print suffix
+.I `p'
+were specified.
+
+
+An unescaped `&' in
+.I replacement
+is replaced by the currently matched text.
+The character sequence
+\fI`\\m'\fR,
+where
+.I m
+is a number in the range [1,9], is replaced by the
+.IR m th
+backreference expression of the matched text.
+If
+.I replacement
+consists of a single `%', then
+.I replacement
+from the last substitution is used.
+Newlines may be embedded in
+.I replacement
+if they are escaped with a backslash (\\).
+
+.TP 8
+(.,.)s
+Repeats the last substitution.
+This form of the
+.I `s'
+command may be suffixed with
+any combination of the characters
+.IR `r' ,
+.IR `g' ,
+and
+.IR `p' .
+The
+.I `r'
+suffix causes
+the regular expression of the last search to be used instead of the
+that of the last substitution.
+The
+.I `g'
+suffix toggles the global suffix of the last substitution.
+The
+.I `p'
+suffix toggles the print suffix of the last substitution
+The current address is set to the last line affected.
+
+.TP 8
+(.,.)t(.)
+Copies (i.e., transfers) the addressed lines to after the right-hand
+destination address, which may be the address
+.IR 0
+(zero).
+The current address is set to the last line
+copied.
+
+.TP 8
+u
+Undoes the last command and restores the current address
+to what it was before the command.
+The global commands
+.IR `g' ,
+.IR `G' ,
+.IR `v' ,
+and
+.IR `V' .
+are treated as a single command by undo.
+.I `u'
+is its own inverse.
+
+.TP 8
+.RI (1,$)v /pat/command-list
+Applies
+.I command-list
+to each of the addressed lines not matching a regular expression
+.IR re .
+This is similar to the
+.I `g'
+command.
+
+.TP 8
+.RI (1,$)V /re/
+Interactively edits the addressed lines not matching a regular expression
+.IR re.
+This is similar to the
+.I `G'
+command.
+
+.TP 8
+.RI (1,$)w \ file
+Writes the addressed lines to
+.IR file .
+Any previous contents of
+.I file
+is lost without warning.
+If there is no default filename, then the default filename is set to
+.IR file,
+otherwise it is unchanged.  If no filename is specified, then the default
+filename is used.
+The current address is unchanged.
+
+.TP 8
+.RI (1,$)wq \ file
+Writes the addressed lines to
+.IR file ,
+and then executes a
+.I `q'
+command.
+
+.TP 8
+.RI (1,$)w \ !command
+Writes the addressed lines to the standard input of
+.IR `!command' ,
+executed as described below.
+The default filename and current address are unchanged.
+
+.TP 8
+.RI (1,$)W \ file
+Appends the addressed lines to the end of
+.IR file .
+This is similar to the
+.I `w'
+command, expect that the previous contents of file is not clobbered.
+The current address is unchanged.
+
+.TP 8
+x
+Prompts for an encryption key which is used in subsequent reads and
+writes.  If a newline alone is entered as the key, then encryption is
+turned off.  Otherwise, echoing is disabled while a key is read.
+Encryption/decryption is done using the bdes(1) algorithm.
+
+.TP 8
+.RI (.+1)z n
+Scrolls
+.I n
+lines at a time starting at addressed line.  If
+.I n
+is not specified, then the current window size is used.
+The current address is set to the last line printed.
+
+.TP 8
+.RI ! command
+Executes
+.I command
+via
+.IR sh (1).
+If the first character of
+.I command
+is `!', then it is replaced by text of the
+previous
+.IR `!command' .
+.B ed
+does not process
+.I command
+for backslash (\\) escapes.
+However, an unescaped
+.I `%'
+is replaced by the default filename.
+When the shell returns from execution, a `!'
+is printed to the standard output.
+The current line is unchanged.
+
+.TP 8
+.RI (.,.)! command
+Replaces the addressed lines with the output of
+.I `!command'
+as described above.
+The current address is set to the last line read.
+
+.TP 8
+($)=
+Prints the line number of the addressed line.
+
+.TP 8
+(.+1)newline
+Prints the addressed line, and sets the current address to
+that line.
+
+.SH FILES
+.TP 20
+/tmp/ed.*
+Buffer file
+.PD 0
+.TP 20
+\fR./ed.hup\fR, $HOME/ed.hup
+First and second files to which
+.B ed
+attempts to write the  buffer if the terminal hangs up.
+
+.SH SEE ALSO
+
+.IR vi (1),
+.IR sed (1),
+.IR regex (3),
+.IR bdes (1),
+.IR sh (1).
+
+USD:12-13
+
+B. W. Kernighan and P. J. Plauger,
+.I Software Tools in Pascal ,
+Addison-Wesley, 1981.
+
+.SH LIMITATIONS
+.B ed
+processes
+.I file
+arguments for backslash escapes, i.e.,  in a filename,
+any characters preceded by a backslash (\\) are
+interpreted literally.
+
+If a text (non-binary) file is not terminated by a newline character,
+then
+.B ed
+appends one on reading/writing it.  In the case of a binary file,
+.B ed
+does not append a newline on reading/writing.
+
+per line overhead: 4 ints
+
+.SH DIAGNOSTICS
+When an error occurs,
+.B ed
+prints a `?' and either returns to command mode
+or exits if its input is from a script.
+An explanation of the last error can be
+printed with the
+.I `h'
+(help) command.
+
+Since the 
+.I `g'
+(global) command  masks any errors from failed searches and substitutions,
+it can be used to perform conditional operations in scripts; e.g.,
+.sp
+.RS
+g/\fIold\fR/s//\fInew\fR/
+.RE
+.sp
+replaces any occurrences of
+.I old
+with
+.IR new .
+
+If diagnostics are not disabled, attempting to quit
+.B ed
+or edit another file before writing a modified buffer
+results in an error.
+If the command is entered a second time, it succeeds,
+but any changes to the buffer are lost.

bin/ed/ed.h

@@ -0,0 +1,263 @@
+/* ed.h: type and constant definitions for the ed editor. */
+/*
+ * Copyright (c) 1993 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Andrew Moore, Talke Studio.
+ *
+ * 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. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. 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.
+ *
+ *	@(#)ed.h	5.5 (Berkeley) 3/28/93
+ */
+
+#include <unistd.h>
+#include <errno.h>
+#if defined(BSD) && BSD >= 199103 || defined(__386BSD__)
+# include <sys/param.h>		/* for MAXPATHLEN */
+#endif
+#include <regex.h>
+#include <signal.h>
+
+#define BITSPERBYTE 8
+#define BITS(type)  (BITSPERBYTE * (int)sizeof(type))
+#define CHARBITS    BITS(char)
+#define INTBITS     BITS(int)
+#define INTHIBIT    (1 << (INTBITS - 1))
+
+#define ERR		(-2)
+#define EMOD		(-3)
+#define FATAL		(-4)
+
+#ifndef MAXPATHLEN
+# define MAXPATHLEN 255		/* _POSIX_PATH_MAX */
+#endif
+
+#define MAXFNAME MAXPATHLEN	/* max file name size */
+#define MINBUFSZ 512		/* minimum buffer size - must be > 0 */
+#define LINECHARS (INTHIBIT - 1) /* max chars per line */
+#define SE_MAX 30		/* max subexpressions in a regular expression */
+
+typedef regex_t pattern_t;
+
+/* Line node */
+typedef struct	line {
+	struct line	*next;
+	struct line	*prev;
+	off_t		seek;		/* address of line in scratch buffer */
+
+#define ACTV INTHIBIT			/* active bit: high bit of len */
+
+	int		len;		/* length of line */
+} line_t;
+
+
+typedef struct undo {
+
+/* type of undo nodes */
+#define UADD	0
+#define UDEL 	1
+#define UMOV	2
+#define VMOV	3
+
+	int type;			/* command type */
+	line_t	*h;			/* head of list */
+	line_t  *t;			/* tail of list */
+} undo_t;
+
+#ifndef max
+# define max(a,b) ((a) > (b) ? (a) : (b))
+#endif
+#ifndef min
+# define min(a,b) ((a) < (b) ? (a) : (b))
+#endif
+
+/* nextln: return line after l mod k */
+#define nextln(l,k)	((l)+1 > (k) ? 0 : (l)+1)
+
+/* nextln: return line before l mod k */
+#define prevln(l,k)	((l)-1 < 0 ? (k) : (l)-1)
+
+#define	skipblanks() while (isspace(*ibufp) && *ibufp != '\n') ibufp++
+
+/* spl1: disable some interrupts (requires reliable signals) */
+#define spl1() mutex++
+
+/* spl0: enable all interrupts; check sigflags (requires reliable signals) */
+#define spl0() \
+if (--mutex == 0) { \
+	if (sigflags & (1 << SIGHUP)) dohup(SIGHUP); \
+	if (sigflags & (1 << SIGINT)) dointr(SIGINT); \
+}
+
+#if defined(sun) || defined(NO_REALLOC_NULL)
+/* CKBUF: assure at least a minimum size for buffer b */
+#define CKBUF(b,n,i,err) \
+if ((i) > (n)) { \
+	int ti = (n); \
+	char *ts; \
+	spl1(); \
+	if ((b) != NULL) { \
+		if ((ts = (char *) realloc((b), ti += max((i), MINBUFSZ))) == NULL) { \
+			fprintf(stderr, "%s\n", strerror(errno)); \
+			sprintf(errmsg, "out of memory"); \
+			spl0(); \
+			return err; \
+		} \
+	} else { \
+		if ((ts = (char *) malloc(ti += max((i), MINBUFSZ))) == NULL) { \
+			fprintf(stderr, "%s\n", strerror(errno)); \
+			sprintf(errmsg, "out of memory"); \
+			spl0(); \
+			return err; \
+		} \
+	} \
+	(n) = ti; \
+	(b) = ts; \
+	spl0(); \
+}
+#else /* NO_REALLOC_NULL */
+/* CKBUF: assure at least a minimum size for buffer b */
+#define CKBUF(b,n,i,err) \
+if ((i) > (n)) { \
+	int ti = (n); \
+	char *ts; \
+	spl1(); \
+	if ((ts = (char *) realloc((b), ti += max((i), MINBUFSZ))) == NULL) { \
+		fprintf(stderr, "%s\n", strerror(errno)); \
+		sprintf(errmsg, "out of memory"); \
+		spl0(); \
+		return err; \
+	} \
+	(n) = ti; \
+	(b) = ts; \
+	spl0(); \
+}
+#endif /* NO_REALLOC_NULL */
+
+/* requeue: link pred before succ */
+#define requeue(pred, succ) (pred)->next = (succ), (succ)->prev = (pred)
+
+/* insqueue: insert elem in circular queue after pred */
+#define insqueue(elem, pred) \
+{ \
+	requeue((elem), (pred)->next); \
+	requeue((pred), elem); \
+}
+
+/* remqueue: remove elem from circular queue */
+#define remqueue(elem) requeue((elem)->prev, (elem)->next);
+
+/* nultonl: overwrite ASCII NULs with newlines */
+#define nultonl(s, l) translit(s, l, '\0', '\n')
+
+/* nltonul: overwrite newlines with ASCII NULs */
+#define nltonul(s, l) translit(s, l, '\n', '\0')
+
+#ifndef strerror
+# define strerror(n) sys_errlist[n]
+#endif
+
+#ifndef __P
+# ifndef __STDC__
+#  define __P(proto) ()
+# else
+#  define __P(proto) proto
+# endif
+#endif
+
+/* local function declarations */
+int append __P((long, int));
+int cbcdec __P((char *, FILE *));
+int cbcenc __P((char *, int, FILE *));
+char *ckfn __P((char *));
+int ckglob __P((void));
+int ckrange __P((long, long));
+int desflush __P((FILE *));
+int desgetc __P((FILE *));
+void desinit __P((void));
+int desputc __P((int, FILE *));
+int docmd __P((int));
+void err __P((char *));
+char *ccl __P((char *));
+void cvtkey __P((char *, char *));
+long doglob __P((int));
+void dohup __P((int));
+void dointr __P((int));
+void dowinch __P((int));
+int doprint __P((long, long, int));
+long doread __P((long, char *));
+long dowrite __P((long, long, char *, char *));
+char *esctos __P((char *));
+long patscan __P((pattern_t *, int));
+long getaddr __P((line_t *));
+char *getcmdv __P((int *, int));
+char *getfn __P((void));
+int getkey __P((void));
+char *getlhs __P((int));
+int getline __P((void));
+int getlist __P((void));
+long getnum __P((int));
+long getone __P((void));
+line_t *getlp __P((long));
+int getrhs __P((int));
+int getshcmd __P((void));
+char *gettxt __P((line_t *));
+void init_buf __P((void));
+int join __P((long, long));
+int lndelete __P((long, long));
+line_t *lpdup __P((line_t *));
+void lpqueue __P((line_t *));
+void makekey __P((char *));
+char *makesub __P((int));
+char *translit __P((char *, int, int, int));
+int move __P((long));
+int oddesc __P((char *, char *));
+void onhup __P((int));
+void onintr __P((int));
+pattern_t *optpat __P((void));
+void putstr __P((char *, int, long, int));
+char *puttxt __P((char *));
+void quit __P((int));
+int regsub __P((pattern_t *, line_t *, int));
+int sbclose __P((void));
+int sbopen __P((void));
+int sgetline __P((FILE *));
+int catsub __P((char *, regmatch_t *, int));
+int subst __P((pattern_t *, int));
+int tobinhex __P((int, int));
+int transfer __P((long));
+int undo __P((void));
+undo_t *upush __P((int, long, long));
+void ureset __P((void));
+
+
+extern char *sys_errlist[];
+extern int mutex;
+extern int sigflags;

bin/ed/re.c

@@ -0,0 +1,156 @@
+/* re.c: This file contains the regular expression interface routines for
+   the ed line editor. */
+/*-
+ * Copyright (c) 1993 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley
+ * by Andrew Moore, Talke Studio.
+ *
+ * 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. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. 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.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)re.c	5.5 (Berkeley) 3/28/93";
+#endif /* not lint */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "ed.h"
+
+extern char *lhbuf;
+extern int lhbufsz;
+extern char *ibufp;
+extern int ibufsz;
+extern int patlock;
+
+char errmsg[MAXFNAME + 40] = "";
+
+/* optpat: return pointer to compiled pattern from command buffer */
+pattern_t *
+optpat()
+{
+	static pattern_t *exp = NULL;
+
+	char *exps;
+	char delim;
+	int n;
+
+	if ((delim = *ibufp) == '\n') {
+		if (!exp) sprintf(errmsg, "no previous pattern");
+		return exp;
+	} else if (delim == ' ' || *++ibufp == '\n') {
+		sprintf(errmsg, "invalid pattern delimiter");
+		return NULL;
+	} else if (*ibufp == delim) {
+		sprintf(errmsg, "no previous pattern");
+		return exp;
+	} else if ((exps = getlhs(delim)) == NULL)
+		return NULL;
+	/* buffer alloc'd && not reserved */
+	if (exp && !patlock)
+		regfree(exp);
+	else if ((exp = (pattern_t *) malloc(sizeof(pattern_t))) == NULL) {
+		fprintf(stderr, "%s\n", strerror(errno));
+		sprintf(errmsg, "out of memory");
+		return NULL;
+	}
+	patlock = 0;
+#ifdef GNU_REGEX
+	/* initialize pattern buffer */
+	exp->buffer = NULL;
+	exp->allocated = 0L;
+	exp->fastmap = 0;		/* not used by GNU regex after 0.12 */
+	exp->translate = 0;
+#endif
+	if (n = regcomp(exp, exps, 0)) {
+		regerror(n, exp, errmsg, sizeof errmsg);
+		return NULL;
+	}
+	return exp;
+}
+
+
+extern int isbinary;
+
+/* getlhs: copy a pattern string from the command buffer; return pointer
+   to the copy */
+char *
+getlhs(delim)
+	int delim;
+{
+	char *nd;
+	int len;
+
+	for (nd = ibufp; *nd != delim && *nd != '\n'; nd++)
+		switch (*nd) {
+		default:
+			break;
+		case '[':
+			if ((nd = ccl(++nd)) == NULL) {
+				sprintf(errmsg, "unbalanced brackets ([])");
+				return NULL;
+			}
+			break;
+		case '\\':
+			if (*++nd == '\n') {
+				sprintf(errmsg, "trailing backslash (\\)");
+				return NULL;
+			}
+			break;
+		}
+	len = nd - ibufp;
+	CKBUF(lhbuf, lhbufsz, len + 1, NULL);
+	memcpy(lhbuf, ibufp, len);
+	lhbuf[len] = '\0';
+	ibufp = nd;
+	return (isbinary) ? nultonl(lhbuf, len) : lhbuf;
+}
+
+
+/* ccl: expand a POSIX character class */
+char *
+ccl(s)
+	char *s;
+{
+	int c, d;
+
+	if (*s == '^')
+		s++;
+	if (*s == ']')
+		s++;
+	for (; *s != ']' && *s != '\n'; s++)
+		if (*s == '[' && ((d = *(s+1)) == '.' || d == ':' || d == '='))
+			for (s++, c = *++s; *s != ']' || c != d; s++)
+				if ((c = *s) == '\n')
+					return NULL;
+	return  (*s == ']') ? s : NULL;
+}

bin/ed/test/=.err

@@ -0,0 +1 @@
+1,$=

bin/ed/test/Makefile

@@ -0,0 +1,17 @@
+ED=	../obj/ed
+
+all: build test
+	@echo done
+
+build: mkscripts.sh
+	@echo building test scripts...
+	@chmod +x mkscripts.sh
+	@mkscripts.sh ${ED}
+
+test: build ckscripts.sh
+	@echo running test scripts...
+	@chmod +x ckscripts.sh
+	@ckscripts.sh ${ED}
+
+clean:
+	rm -f *.ed *.[oz] *~

bin/ed/test/README

@@ -0,0 +1,41 @@
+The files in this directory with suffixes `.t', `.d', `.r' and `.err' are
+used for testing ed.  To run the tests, set the ED variable in the Makefile
+for the path name of the program to be tested (e.g., /bin/ed), and type
+`make'.  The tests do not exhaustively verify POSIX compliance nor do
+they verify correct 8-bit or long line support.
+
+The test file suffixes have the following meanings:
+.t    Template - a list of ed commands from which an ed script is
+      constructed
+.d    Data - read by an ed script
+.r    Result - the expected output after processing data via an ed
+      script.
+.err  Error - invalid ed commands that should generate an error
+
+The output of the tests is written to the two files err.o and scripts.o.
+At the end of the tests, these files are grep'ed for error messages,
+which look like:
+	*** The script u.ed exited abnormally ***
+or:
+	*** Output u.o of script u.ed is incorrect ***
+
+It is assumed that the ed being tested processes escapes (\) in file names.
+This is so that a name starting with bang (!) can be read, via:
+	r \!file
+Without the escape, a POSIX ed would attempt to read the output of
+the shell command `file'.  If the ed being tested does not support escape
+processing on file names, then the script `mkscripts.sh' should be modified
+accordingly.
+
+The POSIX requirement that an address range not be used where at most
+a single address is expected has been relaxed in this version of ed.
+Therefore, the  following scripts  which test for compliance with this
+POSIX rule exit abnormally:
+=-err.ed
+a1-err.ed
+i1-err.ed
+k1-err.ed
+r1-err.ed
+
+In addition, one of !1-err.ed or !2.ed will fail, depending on whether or
+not ed was compiled with the VI_BANG directive.

bin/ed/test/TODO

@@ -0,0 +1,15 @@
+Some missing tests:
+0) g/./s^@^@	- okay: NULs in commands
+1) g/./s/^@/	- okay: NULs in patterns
+2) a
+   hello^V^Jworld	
+   .		- okay: embedded newlines in insert mode
+3) ed ""	- error: invalid filename
+4) red ..	- error: restricted
+5) red /	- error: restricted
+5) red !xx	- error: restricted
+6) ed -x 	- verify: 8-bit clean
+7) ed		- verify: long-line support
+8) ed		- verify: interactive/help mode
+9) G/pat/	- verify: global interactive command
+10) V/pat/	- verify: global interactive command

bin/ed/test/a.d

@@ -0,0 +1,5 @@
+line 1
+line 2
+line 3
+line 4
+line5

bin/ed/test/a.r

@@ -0,0 +1,8 @@
+hello world
+line 1
+hello world!
+line 2
+line 3
+line 4
+line5
+hello world!!

bin/ed/test/a.t

@@ -0,0 +1,9 @@
+0a
+hello world
+.
+2a
+hello world!
+.
+$a
+hello world!!
+.

bin/ed/test/a1.err

@@ -0,0 +1,3 @@
+1,$a
+hello world
+.

bin/ed/test/a2.err

@@ -0,0 +1,3 @@
+aa
+hello world
+.

bin/ed/test/addr1.err

@@ -0,0 +1 @@
+100

bin/ed/test/addr2.err

@@ -0,0 +1 @@
+-100

bin/ed/test/c.d

@@ -0,0 +1,5 @@
+line 1
+line 2
+line 3
+line 4
+line5

bin/ed/test/c.r

@@ -0,0 +1,4 @@
+at the top
+between top/middle
+in the middle
+at the bottom

bin/ed/test/c.t

@@ -0,0 +1,12 @@
+1c
+at the top
+.
+4c
+in the middle
+.
+$c
+at the bottom
+.
+2,3c
+between top/middle
+.

bin/ed/test/c1.err

@@ -0,0 +1,3 @@
+cc
+hello world
+.

bin/ed/test/c2.err

@@ -0,0 +1,3 @@
+0c
+hello world
+.

bin/ed/test/ckscripts.sh

@@ -0,0 +1,37 @@
+#!/bin/sh -
+# This script runs the .ed scripts generated by mkscripts.sh
+# and compares their output against the .r files, which contain
+# the correct output
+
+PATH="/bin:/usr/bin:/usr/local/bin/:."
+ED=$1
+[ X"$ED" = X -o ! -x $ED ] && ED="../ed"
+[ ! -x $ED ] && { echo "$ED: cannot execute"; exit 1; }
+
+# Run the *-err.ed scripts first, since these don't generate output;
+# rename then to *-err.ed~; they exit with non-zero status
+for i in *-err.ed; do
+	echo $i~
+	if $i; then
+		echo "*** The script $i~ exited abnormally  ***"
+	fi
+	mv $i $i~
+done >errs.o 2>&1
+
+# Run the remainding scripts; they exit with zero status
+for i in *.ed; do
+	base=`expr $i : '\([^.]*\)'`
+#	base=`echo $i | sed 's/\..*//'`
+#	base=`$ED - \!"echo \\\\$i" <<-EOF
+#		s/\..*
+#	EOF`
+	if $base.ed; then
+		if cmp -s $base.o $base.r; then :; else
+			echo "*** Output $base.o of script $i is incorrect ***"
+		fi
+	else
+		echo "*** The script $i exited abnormally ***"
+	fi
+done >scripts.o 2>&1
+
+grep -h '\*\*\*' errs.o scripts.o

bin/ed/test/d.d

@@ -0,0 +1,5 @@
+line 1
+line 2
+line 3
+line 4
+line5

bin/ed/test/d.err

@@ -0,0 +1 @@
+dd

bin/ed/test/d.r

@@ -0,0 +1 @@
+line 2

bin/ed/test/d.t

@@ -0,0 +1,3 @@
+1d
+2;+1d
+$d

bin/ed/test/e1.d

@@ -0,0 +1 @@
+hello world

bin/ed/test/e1.err

@@ -0,0 +1 @@
+ee e1.err

bin/ed/test/e1.r

@@ -0,0 +1 @@
+E e1.t

bin/ed/test/e1.t

@@ -0,0 +1 @@
+E e1.t

bin/ed/test/e2.d

@@ -0,0 +1 @@
+E !echo hello world-

bin/ed/test/e2.err

@@ -0,0 +1 @@
+.e e2.err

bin/ed/test/e2.r

@@ -0,0 +1 @@
+hello world-

bin/ed/test/e2.t

@@ -0,0 +1 @@
+E !echo hello world-

bin/ed/test/e3.d

@@ -0,0 +1 @@
+E !echo hello world-

bin/ed/test/e3.err

@@ -0,0 +1 @@
+ee.err

bin/ed/test/e3.r

@@ -0,0 +1 @@
+E !echo hello world-

bin/ed/test/e3.t

@@ -0,0 +1 @@
+E

bin/ed/test/e4.d

@@ -0,0 +1 @@
+E !echo hello world-

bin/ed/test/e4.r

@@ -0,0 +1 @@
+E !echo hello world-

bin/ed/test/e4.t

@@ -0,0 +1 @@
+e

bin/ed/test/f1.err

@@ -0,0 +1 @@
+.f f1.err

bin/ed/test/f2.err

@@ -0,0 +1 @@
+ff1.err

bin/ed/test/g1.d

@@ -0,0 +1,5 @@
+line 1
+line 2
+line 3
+line 4
+line5

bin/ed/test/g1.err

@@ -0,0 +1 @@
+g/./s //x/

bin/ed/test/g1.r

@@ -0,0 +1,15 @@
+line5
+help! world
+order
+line 4
+help! world
+order
+line 3
+help! world
+order
+line 2
+help! world
+order
+line 1
+help! world
+order

bin/ed/test/g1.t

@@ -0,0 +1,6 @@
+g/./m0
+g/./s/$/\
+hello world
+g/hello /s/lo/p!/\
+a\
+order

bin/ed/test/g2.d

@@ -0,0 +1,5 @@
+line 1
+line 2
+line 3
+line 4
+line5

bin/ed/test/g2.err

@@ -0,0 +1 @@
+g//s/./x/

bin/ed/test/g2.r

@@ -0,0 +1 @@
+hello world

bin/ed/test/g2.t

@@ -0,0 +1,2 @@
+g/[2-4]/-1,+1c\
+hello world

bin/ed/test/g3.err

@@ -0,0 +1 @@
+g

bin/ed/test/h.err

@@ -0,0 +1 @@
+.h

bin/ed/test/i.d

@@ -0,0 +1,5 @@
+line 1
+line 2
+line 3
+line 4
+line5

bin/ed/test/i.r

@@ -0,0 +1,8 @@
+hello world
+hello world!
+line 1
+line 2
+line 3
+line 4
+hello world!!
+line5

bin/ed/test/i.t

@@ -0,0 +1,9 @@
+1i
+hello world
+.
+2i
+hello world!
+.
+$i
+hello world!!
+.

bin/ed/test/i1.err

@@ -0,0 +1,3 @@
+1,$i
+hello world
+.

bin/ed/test/i2.err

@@ -0,0 +1,3 @@
+ii
+hello world
+.

bin/ed/test/i3.err

@@ -0,0 +1,3 @@
+0i
+hello world
+.

bin/ed/test/j.d

@@ -0,0 +1,5 @@
+line 1
+line 2
+line 3
+line 4
+line5

bin/ed/test/j.r

@@ -0,0 +1,4 @@
+line 1
+line 2line 3
+line 4
+line5

bin/ed/test/j.t

@@ -0,0 +1,2 @@
+1,1j
+2,3j

bin/ed/test/k.d

@@ -0,0 +1,5 @@
+line 1
+line 2
+line 3
+line 4
+line5

bin/ed/test/k.r

@@ -0,0 +1,5 @@
+line 3
+hello world
+line 4
+line5
+line 2

bin/ed/test/k.t

@@ -0,0 +1,10 @@
+2ka
+1d
+'am$
+1ka
+0a
+hello world
+.
+'ad
+u
+'am0

bin/ed/test/k1.err

@@ -0,0 +1 @@
+1,$ka

bin/ed/test/k2.err

@@ -0,0 +1 @@
+kA

bin/ed/test/k3.err

@@ -0,0 +1 @@
+0ka

bin/ed/test/k4.err

@@ -0,0 +1,6 @@
+a
+hello
+.
+.ka
+'ad
+'ap

bin/ed/test/m.d

@@ -0,0 +1,5 @@
+line 1
+line 2
+line 3
+line 4
+line5

bin/ed/test/m.err

@@ -0,0 +1,4 @@
+a
+hello world
+.
+1,$m1

bin/ed/test/m.r

@@ -0,0 +1,5 @@
+line5
+line 1
+line 2
+line 3
+line 4

bin/ed/test/m.t

@@ -0,0 +1,7 @@
+1,2m$
+1,2m$
+1,2m$
+$m0
+$m0
+2,3m1
+2,3m3

bin/ed/test/mkscripts.sh

@@ -0,0 +1,71 @@
+#!/bin/sh -
+# This script generates ed test scripts (.ed) from .t files
+
+PATH="/bin:/usr/bin:/usr/local/bin/:."
+ED=$1
+[ X"$ED" = X -o ! -x $ED ] && ED="../ed"
+[ ! -x $ED ] && { echo "$ED: cannot execute"; exit 1; }
+
+for i in *.t; do
+#	base=${i%.*}
+#	base=`echo $i | sed 's/\..*//'`
+	base=`expr $i : '\([^.]*\)'`
+	(
+	echo "#!/bin/sh -"
+	echo "$ED - <<\EOT"
+	echo "r \\$base.d"
+	cat $i
+	echo "w \\$base.o"
+	echo EOT
+	) >$base.ed
+	chmod +x $base.ed
+# The following is pretty ugly and not appropriate use of ed
+# but the point is that it can be done...
+#	base=`$ED - \!"echo \\\\$i" <<-EOF
+#		s/\..*
+#	EOF`
+#	$ED - <<-EOF
+#		a
+#		#!/bin/sh -
+#		$ED - <<\EOT
+#		r \\$base.d
+#		w \\$base.o
+#		EOT
+#		.
+#		-2r \\$i
+#		w \\$base.ed
+#		!chmod +x \\$base.ed
+#	EOF
+done
+
+for i in *.err; do
+#	base=${i%.*}
+#	base=`echo $i | sed 's/\..*//'`
+	base=`expr $i : '\([^.]*\)'`
+	(
+	echo "#!/bin/sh -"
+	echo "$ED - <<\EOT"
+	echo H
+	echo "r \\$base.err"
+	cat $i
+	echo "w \\$base.o"
+	echo EOT
+	) >$base-err.ed
+	chmod +x $base-err.ed
+#	base=`$ED - \!"echo \\\\$i" <<-EOF
+#		s/\..*
+#	EOF`
+#	$ED - <<-EOF
+#		a
+#		#!/bin/sh -
+#		$ED - <<\EOT
+#		H
+#		r \\$base.err
+#		w \\$base.o
+#		EOT
+#		.
+#		-2r \\$i
+#		w \\${base}-err.ed
+#		!chmod +x ${base}-err.ed
+#	EOF
+done

bin/ed/test/q.t

@@ -0,0 +1,5 @@
+w q.o
+a
+hello
+.
+q

bin/ed/test/q1.err

@@ -0,0 +1 @@
+.q

bin/ed/test/r1.d

@@ -0,0 +1,5 @@
+line 1
+line 2
+line 3
+line 4
+line5

bin/ed/test/r1.err

@@ -0,0 +1 @@
+1,$r r1.err

bin/ed/test/r1.r

@@ -0,0 +1,7 @@
+line 1
+hello world
+line 2
+line 3
+line 4
+line5
+hello world

bin/ed/test/r1.t

@@ -0,0 +1,3 @@
+1;r !echo hello world
+1
+r !echo hello world

bin/ed/test/r2.d

@@ -0,0 +1,5 @@
+line 1
+line 2
+line 3
+line 4
+line5

bin/ed/test/r2.err

@@ -0,0 +1 @@
+r a-good-book

bin/ed/test/r2.r

@@ -0,0 +1,10 @@
+line 1
+line 2
+line 3
+line 4
+line5
+line 1
+line 2
+line 3
+line 4
+line5