usr.bin/unifdef: this somehow missed the not-POSIX purge

3 files changed, 0 insertions, 1413 deletions

diff --git a/usr.bin/unifdef/unifdef.1 b/usr.bin/unifdef/unifdef.1
deleted file mode 100644
index 7319245..0000000
--- a/usr.bin/unifdef/unifdef.1
+++ /dev/null
@@ -1,347 +0,0 @@
-.\"	$NetBSD: unifdef.1,v 1.13 2017/07/03 21:34:22 wiz Exp $
-.\"
-.\" Copyright (c) 1985, 1991, 1993
-.\"	The Regents of the University of California.  All rights reserved.
-.\"
-.\" This code is derived from software contributed to Berkeley by
-.\" Dave Yost.
-.\"
-.\" 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.
-.\"
-.\" Portions of this code (support for #if and #elif) are Copyright (c)
-.\" 2002, 2003 Tony Finch.
-.\"
-.\" 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.
-.\"
-.\"     @(#)unifdef.1	8.2 (Berkeley) 4/1/94
-.\"	$dotat: things/unifdef.1,v 1.45 2003/01/20 14:37:08 fanf2 Exp $
-.\" $FreeBSD: src/usr.bin/unifdef/unifdef.1,v 1.19 2003/01/20 12:41:41 fanf Exp $
-.\"
-.Dd June 5, 2009
-.Dt UNIFDEF 1
-.Os
-.Sh NAME
-.Nm unifdef ,
-.Nm unifdefall
-.Nd remove preprocessor conditionals from code
-.Sh SYNOPSIS
-.Nm
-.Op Fl ceklst
-.Op Fl I Ns Ar path
-.Op Fl D Ns Ar sym Ns Op = Ns Ar val
-.Op Fl U Ns Ar sym
-.Op Fl iD Ns Ar sym Ns Op = Ns Ar val
-.Op Fl iU Ns Ar sym
-.Ar ...
-.Op Fl o Ar output
-.Op Ar file
-.Nm unifdefall
-.Op Fl I Ns Ar path
-.Ar ...
-.Ar file
-.Sh DESCRIPTION
-The
-.Nm
-utility selectively processes conditional
-.Xr cpp 1
-directives.
-It removes from a file both the directives and any additional text
-that they specify should be removed, while otherwise leaving the
-file alone.
-.Pp
-The
-.Nm
-utility acts on
-.Ic #if , #ifdef , #ifndef , #elif , #else ,
-and
-.Ic #endif
-lines,
-and it understands only the commonly-used subset
-of the expression syntax for
-.Ic #if
-and
-.Ic #elif
-lines.
-It handles
-integer values of symbols defined on the command line,
-the
-.Fn defined
-operator applied to symbols defined or undefined on the command line,
-the operators
-.Ic \&! , < , > , <= , >= , == , != , && , || ,
-and parenthesized expressions.
-Anything that it does not understand is passed through unharmed.
-It only processes
-.Ic #ifdef
-and
-.Ic #ifndef
-directives if the symbol is specified on the command line,
-otherwise they are also passed through unchanged.
-By default, it ignores
-.Ic #if
-and
-.Ic #elif
-lines with constant expressions,
-or they may be processed by specifying the
-.Fl k
-flag on the command line.
-.Pp
-The
-.Nm
-utility also understands just enough about C
-to know when one of the directives is inactive
-because it is inside
-a comment,
-or affected by a backslash-continued line.
-It spots unusually-formatted preprocessor directives
-and knows when the layout is too odd to handle.
-.Pp
-A script called
-.Nm unifdefall
-can be used to remove all conditional
-.Xr cpp 1
-directives from a file.
-It uses
-.Nm Fl s
-and
-.Nm cpp Fl dM
-to get lists of all the controlling symbols
-and their definitions (or lack thereof),
-then invokes
-.Nm
-with appropriate arguments to process the file.
-.Pp
-Available options:
-.Bl -tag -width indent -compact
-.It Fl D Ns Ar sym Ns Op = Ns Ar val
-Specify that a symbol is defined,
-and optionally specify what value to give it
-for the purpose of handling
-.Ic #if
-and
-.Ic #elif
-directives.
-.It Fl U Ns Ar sym
-Specify that a symbol is undefined.
-If the same symbol appears in more than one argument,
-the last occurrence dominates.
-.It Fl c
-If the
-.Fl c
-flag is specified,
-then the operation of
-.Nm
-is complemented,
-i.e., the lines that would have been removed or blanked
-are retained and vice versa.
-.It Fl e
-Because
-.Nm
-processes its input one line at a time,
-it cannot remove preprocessor directives that span more than one line.
-The most common example of this is a directive with a multi-line
-comment hanging off its right hand end.
-By default,
-if
-.Nm
-has to process such a directive,
-it will complain that the line is too obfuscated.
-The
-.Fl e
-option changes the behaviour so that,
-where possible,
-such lines are left unprocessed instead of reporting an error.
-.It Fl k
-Process
-.Ic #if
-and
-.Ic #elif
-lines with constant expressions.
-By default, sections controlled by such lines are passed through unchanged
-because they typically start
-.Dq Li "#if 0"
-and are used as a kind of comment to sketch out future or past development.
-It would be rude to strip them out, just as it would be for normal comments.
-.It Fl l
-Replace removed lines with blank lines
-instead of deleting them.
-.It Fl o Ar output
-The argument given is the name of an
-.Ar output
-file to be used instead of the standard output.
-This file can be the same as the input file.
-.It Fl s
-Instead of processing the input file as usual,
-this option causes
-.Nm
-to produce a list of symbols that appear in expressions
-that
-.Nm
-understands.
-It is useful in conjunction with the
-.Fl dM
-option of
-.Xr cpp 1
-for creating
-.Nm
-command lines.
-.It Fl t
-Disables parsing for C comments
-and line continuations,
-which is useful
-for plain text.
-.It Fl iD Ns Ar sym Ns Op = Ns Ar val
-.It Fl iU Ns Ar sym
-Ignore
-.Ic #ifdef Ns s .
-If your C code uses
-.Ic #ifdef Ns s
-to delimit non-C lines,
-such as comments
-or code which is under construction,
-then you must tell
-.Nm
-which symbols are used for that purpose so that it will not try to parse
-comments
-and line continuations
-inside those
-.Ic #ifdef Ns s .
-One specifies ignored symbols with
-.Fl iD Ns Ar sym Ns Oo = Ns Ar val Oc
-and
-.Fl iU Ns Ar sym
-similar to
-.Fl D Ns Ar sym Ns Op = Ns Ar val
-and
-.Fl U Ns Ar sym
-above.
-.It Fl I Ns Ar path
-Specifies to
-.Nm unifdefall
-an additional place to look for
-.Ic #include
-files.
-This option is ignored by
-.Nm
-for compatibility with
-.Xr cpp 1
-and to simplify the implementation of
-.Nm unifdefall .
-.El
-.Pp
-The
-.Nm
-utility copies its output to
-.Em stdout
-and will take its input from
-.Em stdin
-if no
-.Ar file
-argument is given.
-.Pp
-The
-.Nm
-utility works nicely with the
-.Fl D Ns Ar sym
-option of
-.Xr diff 1 .
-.Sh DIAGNOSTICS
-.Bl -item
-.It
-Too many levels of nesting.
-.It
-Inappropriate
-.Ic #elif ,
-.Ic #else
-or
-.Ic #endif .
-.It
-Obfuscated preprocessor control line.
-.It
-Premature
-.Dv EOF
-(with the line number of the most recent unterminated
-.Ic #if ) .
-.It
-.Dv EOF
-in comment.
-.El
-.Pp
-The
-.Nm
-utility exits 0 if the output is an exact copy of the input,
-1 if not, and 2 if in trouble.
-.Sh SEE ALSO
-.Xr cpp 1 ,
-.Xr diff 1
-.Sh HISTORY
-The
-.Nm
-command appeared in
-.Bx 4.3 .
-.Tn ANSI\~C
-support was added in
-.Fx 4.7 .
-.Sh BUGS
-Expression evaluation is very limited.
-.Pp
-Preprocessor control lines split across more than one physical line
-(because of comments or backslash-newline)
-cannot be handled in every situation.
-.Pp
-Trigraphs are not recognized.
-.Pp
-There is no support for symbols with different definitions at
-different points in the source file.
-.Pp
-The text-mode and ignore functionality does not correspond to modern
-.Xr cpp 1
-behaviour.
diff --git a/usr.bin/unifdef/unifdef.c b/usr.bin/unifdef/unifdef.c
deleted file mode 100644
index 702e3ec..0000000
--- a/usr.bin/unifdef/unifdef.c
+++ /dev/null
@@ -1,1037 +0,0 @@
-/*	$NetBSD: unifdef.c,v 1.22 2012/10/13 18:26:03 christos Exp $	*/
-
-/*
- * Copyright (c) 1985, 1993
- *	The Regents of the University of California.  All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Dave Yost. It was rewritten to support ANSI C by Tony Finch.
- *
- * 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.
- */
-
-/*
- * Copyright (c) 2002, 2003 Tony Finch <dot@dotat.at>
- *
- * This code is derived from software contributed to Berkeley by
- * Dave Yost. It was rewritten to support ANSI C by Tony Finch.
- *
- * 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.
- */
-
-#include <sys/cdefs.h>
-
-#ifndef lint
-#if 0
-static const char copyright[] =
-"@(#) Copyright (c) 1985, 1993\n\
-	The Regents of the University of California.  All rights reserved.\n";
-#endif
-#ifdef __IDSTRING
-__IDSTRING(Berkeley, "@(#)unifdef.c	8.1 (Berkeley) 6/6/93");
-__IDSTRING(NetBSD, "$NetBSD: unifdef.c,v 1.22 2012/10/13 18:26:03 christos Exp $");
-__IDSTRING(dotat, "$dotat: things/unifdef.c,v 1.161 2003/07/01 15:32:48 fanf2 Exp $");
-#endif
-#endif /* not lint */
-#ifdef __FBSDID
-__FBSDID("$FreeBSD: src/usr.bin/unifdef/unifdef.c,v 1.18 2003/07/01 15:30:43 fanf Exp $");
-#endif
-
-/*
- * unifdef - remove ifdef'ed lines
- *
- *  Wishlist:
- *      provide an option which will append the name of the
- *        appropriate symbol after #else's and #endif's
- *      provide an option which will check symbols after
- *        #else's and #endif's to see that they match their
- *        corresponding #ifdef or #ifndef
- *      generate #line directives in place of deleted code
- *
- *   The first two items above require better buffer handling, which would
- *     also make it possible to handle all "dodgy" directives correctly.
- */
-
-#include <ctype.h>
-#include <err.h>
-#include <libgen.h>
-#include <stdarg.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include <sys/param.h>
-#include <sys/stat.h>
-
-#include "stdbool.h"
-
-/* types of input lines: */
-typedef enum {
-	LT_TRUEI,		/* a true #if with ignore flag */
-	LT_FALSEI,		/* a false #if with ignore flag */
-	LT_IF,			/* an unknown #if */
-	LT_TRUE,		/* a true #if */
-	LT_FALSE,		/* a false #if */
-	LT_ELIF,		/* an unknown #elif */
-	LT_ELTRUE,		/* a true #elif */
-	LT_ELFALSE,		/* a false #elif */
-	LT_ELSE,		/* #else */
-	LT_ENDIF,		/* #endif */
-	LT_DODGY,		/* flag: directive is not on one line */
-	LT_DODGY_LAST = LT_DODGY + LT_ENDIF,
-	LT_PLAIN,		/* ordinary line */
-	LT_EOF,			/* end of file */
-	LT_COUNT
-} Linetype;
-
-static char const * const linetype_name[] = {
-	"TRUEI", "FALSEI", "IF", "TRUE", "FALSE",
-	"ELIF", "ELTRUE", "ELFALSE", "ELSE", "ENDIF",
-	"DODGY TRUEI", "DODGY FALSEI",
-	"DODGY IF", "DODGY TRUE", "DODGY FALSE",
-	"DODGY ELIF", "DODGY ELTRUE", "DODGY ELFALSE",
-	"DODGY ELSE", "DODGY ENDIF",
-	"PLAIN", "EOF"
-};
-
-/* state of #if processing */
-typedef enum {
-	IS_OUTSIDE,
-	IS_FALSE_PREFIX,	/* false #if followed by false #elifs */
-	IS_TRUE_PREFIX,		/* first non-false #(el)if is true */
-	IS_PASS_MIDDLE,		/* first non-false #(el)if is unknown */
-	IS_FALSE_MIDDLE,	/* a false #elif after a pass state */
-	IS_TRUE_MIDDLE,		/* a true #elif after a pass state */
-	IS_PASS_ELSE,		/* an else after a pass state */
-	IS_FALSE_ELSE,		/* an else after a true state */
-	IS_TRUE_ELSE,		/* an else after only false states */
-	IS_FALSE_TRAILER,	/* #elifs after a true are false */
-	IS_COUNT
-} Ifstate;
-
-static char const * const ifstate_name[] = {
-	"OUTSIDE", "FALSE_PREFIX", "TRUE_PREFIX",
-	"PASS_MIDDLE", "FALSE_MIDDLE", "TRUE_MIDDLE",
-	"PASS_ELSE", "FALSE_ELSE", "TRUE_ELSE",
-	"FALSE_TRAILER"
-};
-
-/* state of comment parser */
-typedef enum {
-	NO_COMMENT = false,	/* outside a comment */
-	C_COMMENT,		/* in a comment like this one */
-	CXX_COMMENT,		/* between // and end of line */
-	STARTING_COMMENT,	/* just after slash-backslash-newline */
-	FINISHING_COMMENT	/* star-backslash-newline in a C comment */
-} Comment_state;
-
-static char const * const comment_name[] = {
-	"NO", "C", "CXX", "STARTING", "FINISHING"
-};
-
-/* state of preprocessor line parser */
-typedef enum {
-	LS_START,		/* only space and comments on this line */
-	LS_HASH,		/* only space, comments, and a hash */
-	LS_DIRTY		/* this line can't be a preprocessor line */
-} Line_state;
-
-static char const * const linestate_name[] = {
-	"START", "HASH", "DIRTY"
-};
-
-/*
- * Minimum translation limits from ISO/IEC 9899:1999 5.2.4.1
- */
-#define	MAXDEPTH        64			/* maximum #if nesting */
-#define	MAXLINE         4096			/* maximum length of line */
-#define	MAXSYMS         4096			/* maximum number of symbols */
-
-/*
- * Sometimes when editing a keyword the replacement text is longer, so
- * we leave some space at the end of the tline buffer to accommodate this.
- */
-#define	EDITSLOP        10
-
-/*
- * Globals.
- */
-
-static bool             complement;		/* -c: do the complement */
-static bool             debugging;		/* -d: debugging reports */
-static bool             iocccok;		/* -e: fewer IOCCC errors */
-static bool             killconsts;		/* -k: eval constant #ifs */
-static bool             lnblank;		/* -l: blank deleted lines */
-static bool             symlist;		/* -s: output symbol list */
-static bool             text;			/* -t: this is a text file */
-
-static const char      *symname[MAXSYMS];	/* symbol name */
-static const char      *value[MAXSYMS];		/* -Dsym=value */
-static bool             ignore[MAXSYMS];	/* -iDsym or -iUsym */
-static int              nsyms;			/* number of symbols */
-
-static FILE            *input;			/* input file pointer */
-static FILE            *output;			/* output file pointer */
-static const char      *filename;		/* input file name */
-static char            *ofilename;		/* output file name */
-static char             tmpname[MAXPATHLEN];	/* used when overwriting */
-static int              linenum;		/* current line number */
-static int              overwriting;		/* output overwrites input */
-
-static char             tline[MAXLINE+EDITSLOP];/* input buffer plus space */
-static char            *keyword;		/* used for editing #elif's */
-
-static Comment_state    incomment;		/* comment parser state */
-static Line_state       linestate;		/* #if line parser state */
-static Ifstate          ifstate[MAXDEPTH];	/* #if processor state */
-static bool             ignoring[MAXDEPTH];	/* ignore comments state */
-static int              stifline[MAXDEPTH];	/* start of current #if */
-static int              depth;			/* current #if nesting */
-static bool             keepthis;		/* don't delete constant #if */
-
-static int              exitstat;		/* program exit status */
-
-static void             addsym(bool, bool, char *);
-static void             debug(const char *, ...) __printflike(1, 2);
-__dead static void      done(void);
-__dead static void      error(const char *);
-static int              findsym(const char *);
-static void             flushline(bool);
-static Linetype         get_line(void);
-static Linetype         ifeval(const char **);
-static void             ignoreoff(void);
-static void             ignoreon(void);
-static void             keywordedit(const char *);
-static void             nest(void);
-__dead static void      process(void);
-static const char      *skipcomment(const char *);
-static const char      *skipsym(const char *);
-static void             state(Ifstate);
-static int              strlcmp(const char *, const char *, size_t);
-__dead static void      usage(void);
-
-#define endsym(c) (!isalpha((unsigned char)c) && !isdigit((unsigned char)c) && c != '_')
-
-/*
- * The main program.
- */
-int
-main(int argc, char *argv[])
-{
-	int opt;
-	struct stat isb, osb;
-
-	while ((opt = getopt(argc, argv, "i:D:U:I:o:cdeklst")) != -1)
-		switch (opt) {
-		case 'i': /* treat stuff controlled by these symbols as text */
-			/*
-			 * For strict backwards-compatibility the U or D
-			 * should be immediately after the -i but it doesn't
-			 * matter much if we relax that requirement.
-			 */
-			opt = *optarg++;
-			if (opt == 'D')
-				addsym(true, true, optarg);
-			else if (opt == 'U')
-				addsym(true, false, optarg);
-			else
-				usage();
-			break;
-		case 'D': /* define a symbol */
-			addsym(false, true, optarg);
-			break;
-		case 'U': /* undef a symbol */
-			addsym(false, false, optarg);
-			break;
-		case 'I':
-			/* no-op for compatibility with cpp */
-			break;
-		case 'c': /* treat -D as -U and vice versa */
-			complement = true;
-			break;
-		case 'd':
-			debugging = true;
-			break;
-		case 'e': /* fewer errors from dodgy lines */
-			iocccok = true;
-			break;
-		case 'k': /* process constant #ifs */
-			killconsts = true;
-			break;
-		case 'l': /* blank deleted lines instead of omitting them */
-			lnblank = true;
-			break;
-		case 'o': /* output to a file */
-			ofilename = optarg;
-			break;
-		case 's': /* only output list of symbols that control #ifs */
-			symlist = true;
-			break;
-		case 't': /* don't parse C comments */
-			text = true;
-			break;
-		default:
-			usage();
-		}
-	argc -= optind;
-	argv += optind;
-	if (nsyms == 0 && !symlist) {
-		warnx("must -D or -U at least one symbol");
-		usage();
-	}
-	if (argc > 1) {
-		errx(2, "can only do one file");
-	} else if (argc == 1 && strcmp(*argv, "-") != 0) {
-		filename = *argv;
-		input = fopen(filename, "r");
-		if (input == NULL)
-			err(2, "can't open %s", filename);
-	} else {
-		filename = "[stdin]";
-		input = stdin;
-	}
-	if (ofilename == NULL) {
-		output = stdout;
-	} else {
-		if (stat(ofilename, &osb) == 0) {
-			if (fstat(fileno(input), &isb) != 0)
-				err(2, "can't fstat %s", filename);
-
-			overwriting = (osb.st_dev == isb.st_dev &&
-			    osb.st_ino == isb.st_ino);
-		}
-		if (overwriting) {
-			int ofd;
-
-			snprintf(tmpname, sizeof(tmpname), "%s/unifdef.XXXXXX",
-				 dirname(ofilename));
-			if ((ofd = mkstemp(tmpname)) != -1)
-				output = fdopen(ofd, "w+");
-			if (output == NULL)
-				err(2, "can't create temporary file");
-			fchmod(ofd, isb.st_mode & ACCESSPERMS);
-		} else {
-			output = fopen(ofilename, "w");
-			if (output == NULL)
-				err(2, "can't open %s", ofilename);
-		}
-	}
-	process();
-	abort(); /* bug */
-}
-
-static void
-usage(void)
-{
-	fprintf(stderr, "usage: unifdef [-cdeklst] [-o output]"
-	    " [-Dsym[=val]] [-Usym] [-iDsym[=val]] [-iUsym] ... [file]\n");
-	exit(2);
-}
-
-/*
- * A state transition function alters the global #if processing state
- * in a particular way. The table below is indexed by the current
- * processing state and the type of the current line.
- *
- * Nesting is handled by keeping a stack of states; some transition
- * functions increase or decrease the depth. They also maintain the
- * ignore state on a stack. In some complicated cases they have to
- * alter the preprocessor directive, as follows.
- *
- * When we have processed a group that starts off with a known-false
- * #if/#elif sequence (which has therefore been deleted) followed by a
- * #elif that we don't understand and therefore must keep, we edit the
- * latter into a #if to keep the nesting correct.
- *
- * When we find a true #elif in a group, the following block will
- * always be kept and the rest of the sequence after the next #elif or
- * #else will be discarded. We edit the #elif into a #else and the
- * following directive to #endif since this has the desired behaviour.
- *
- * "Dodgy" directives are split across multiple lines, the most common
- * example being a multi-line comment hanging off the right of the
- * directive. We can handle them correctly only if there is no change
- * from printing to dropping (or vice versa) caused by that directive.
- * If the directive is the first of a group we have a choice between
- * failing with an error, or passing it through unchanged instead of
- * evaluating it. The latter is not the default to avoid questions from
- * users about unifdef unexpectedly leaving behind preprocessor directives.
- */
-typedef void state_fn(void);
-
-/* report an error */
-__dead static void Eelif (void) { error("Inappropriate #elif"); }
-__dead static void Eelse (void) { error("Inappropriate #else"); }
-__dead static void Eendif(void) { error("Inappropriate #endif"); }
-__dead static void Eeof  (void) { error("Premature EOF"); }
-__dead static void Eioccc(void) { error("Obfuscated preprocessor control line"); }
-/* plain line handling */
-static void print (void) { flushline(true); }
-static void drop  (void) { flushline(false); }
-/* output lacks group's start line */
-static void Strue (void) { drop();  ignoreoff(); state(IS_TRUE_PREFIX); }
-static void Sfalse(void) { drop();  ignoreoff(); state(IS_FALSE_PREFIX); }
-static void Selse (void) { drop();               state(IS_TRUE_ELSE); }
-/* print/pass this block */
-static void Pelif (void) { print(); ignoreoff(); state(IS_PASS_MIDDLE); }
-static void Pelse (void) { print();              state(IS_PASS_ELSE); }
-static void Pendif(void) { print(); --depth; }
-/* discard this block */
-static void Dfalse(void) { drop();  ignoreoff(); state(IS_FALSE_TRAILER); }
-static void Delif (void) { drop();  ignoreoff(); state(IS_FALSE_MIDDLE); }
-static void Delse (void) { drop();               state(IS_FALSE_ELSE); }
-static void Dendif(void) { drop();  --depth; }
-/* first line of group */
-static void Fdrop (void) { nest();  Dfalse(); }
-static void Fpass (void) { nest();  Pelif(); }
-static void Ftrue (void) { nest();  Strue(); }
-static void Ffalse(void) { nest();  Sfalse(); }
-/* variable pedantry for obfuscated lines */
-static void Oiffy (void) { if (iocccok) Fpass(); else Eioccc(); ignoreon(); }
-static void Oif   (void) { if (iocccok) Fpass(); else Eioccc(); }
-static void Oelif (void) { if (iocccok) Pelif(); else Eioccc(); }
-/* ignore comments in this block */
-static void Idrop (void) { Fdrop();  ignoreon(); }
-static void Itrue (void) { Ftrue();  ignoreon(); }
-static void Ifalse(void) { Ffalse(); ignoreon(); }
-/* edit this line */
-static void Mpass (void) { strncpy(keyword, "if  ", 4); Pelif(); }
-static void Mtrue (void) { keywordedit("else\n");  state(IS_TRUE_MIDDLE); }
-static void Melif (void) { keywordedit("endif\n"); state(IS_FALSE_TRAILER); }
-static void Melse (void) { keywordedit("endif\n"); state(IS_FALSE_ELSE); }
-
-static state_fn * const trans_table[IS_COUNT][LT_COUNT] = {
-/* IS_OUTSIDE */
-{ Itrue, Ifalse,Fpass, Ftrue, Ffalse,Eelif, Eelif, Eelif, Eelse, Eendif,
-  Oiffy, Oiffy, Fpass, Oif,   Oif,   Eelif, Eelif, Eelif, Eelse, Eendif,
-  print, done },
-/* IS_FALSE_PREFIX */
-{ Idrop, Idrop, Fdrop, Fdrop, Fdrop, Mpass, Strue, Sfalse,Selse, Dendif,
-  Idrop, Idrop, Fdrop, Fdrop, Fdrop, Mpass, Eioccc,Eioccc,Eioccc,Eioccc,
-  drop,  Eeof },
-/* IS_TRUE_PREFIX */
-{ Itrue, Ifalse,Fpass, Ftrue, Ffalse,Dfalse,Dfalse,Dfalse,Delse, Dendif,
-  Oiffy, Oiffy, Fpass, Oif,   Oif,   Eioccc,Eioccc,Eioccc,Eioccc,Eioccc,
-  print, Eeof },
-/* IS_PASS_MIDDLE */
-{ Itrue, Ifalse,Fpass, Ftrue, Ffalse,Pelif, Mtrue, Delif, Pelse, Pendif,
-  Oiffy, Oiffy, Fpass, Oif,   Oif,   Pelif, Oelif, Oelif, Pelse, Pendif,
-  print, Eeof },
-/* IS_FALSE_MIDDLE */
-{ Idrop, Idrop, Fdrop, Fdrop, Fdrop, Pelif, Mtrue, Delif, Pelse, Pendif,
-  Idrop, Idrop, Fdrop, Fdrop, Fdrop, Eioccc,Eioccc,Eioccc,Eioccc,Eioccc,
-  drop,  Eeof },
-/* IS_TRUE_MIDDLE */
-{ Itrue, Ifalse,Fpass, Ftrue, Ffalse,Melif, Melif, Melif, Melse, Pendif,
-  Oiffy, Oiffy, Fpass, Oif,   Oif,   Eioccc,Eioccc,Eioccc,Eioccc,Pendif,
-  print, Eeof },
-/* IS_PASS_ELSE */
-{ Itrue, Ifalse,Fpass, Ftrue, Ffalse,Eelif, Eelif, Eelif, Eelse, Pendif,
-  Oiffy, Oiffy, Fpass, Oif,   Oif,   Eelif, Eelif, Eelif, Eelse, Pendif,
-  print, Eeof },
-/* IS_FALSE_ELSE */
-{ Idrop, Idrop, Fdrop, Fdrop, Fdrop, Eelif, Eelif, Eelif, Eelse, Dendif,
-  Idrop, Idrop, Fdrop, Fdrop, Fdrop, Eelif, Eelif, Eelif, Eelse, Eioccc,
-  drop,  Eeof },
-/* IS_TRUE_ELSE */
-{ Itrue, Ifalse,Fpass, Ftrue, Ffalse,Eelif, Eelif, Eelif, Eelse, Dendif,
-  Oiffy, Oiffy, Fpass, Oif,   Oif,   Eelif, Eelif, Eelif, Eelse, Eioccc,
-  print, Eeof },
-/* IS_FALSE_TRAILER */
-{ Idrop, Idrop, Fdrop, Fdrop, Fdrop, Dfalse,Dfalse,Dfalse,Delse, Dendif,
-  Idrop, Idrop, Fdrop, Fdrop, Fdrop, Dfalse,Dfalse,Dfalse,Delse, Eioccc,
-  drop,  Eeof }
-/*TRUEI  FALSEI IF     TRUE   FALSE  ELIF   ELTRUE ELFALSE ELSE  ENDIF
-  TRUEI  FALSEI IF     TRUE   FALSE  ELIF   ELTRUE ELFALSE ELSE  ENDIF (DODGY)
-  PLAIN  EOF */
-};
-
-/*
- * State machine utility functions
- */
-static void
-done(void)
-{
-	if (incomment)
-		error("EOF in comment");
-	if (fclose(output)) {
-		if (overwriting) {
-			unlink(tmpname);
-			errx(2, "%s unchanged", ofilename);
-		}
-	}
-	if (overwriting && rename(tmpname, ofilename)) {
-		unlink(tmpname);
-		errx(2, "%s unchanged", ofilename);
-	}
-	exit(exitstat);
-}
-static void
-ignoreoff(void)
-{
-	ignoring[depth] = ignoring[depth-1];
-}
-static void
-ignoreon(void)
-{
-	ignoring[depth] = true;
-}
-static void
-keywordedit(const char *replacement)
-{
-	strlcpy(keyword, replacement, tline + sizeof(tline) - keyword);
-	print();
-}
-static void
-nest(void)
-{
-	depth += 1;
-	if (depth >= MAXDEPTH)
-		error("Too many levels of nesting");
-	stifline[depth] = linenum;
-}
-static void
-state(Ifstate is)
-{
-	ifstate[depth] = is;
-}
-
-/*
- * Write a line to the output or not, according to command line options.
- */
-static void
-flushline(bool keep)
-{
-	if (symlist)
-		return;
-	if (keep ^ complement)
-		fputs(tline, output);
-	else {
-		if (lnblank)
-			putc('\n', output);
-		exitstat = 1;
-	}
-}
-
-/*
- * The driver for the state machine.
- */
-static void
-process(void)
-{
-	Linetype lineval;
-
-	for (;;) {
-		linenum++;
-		lineval = get_line();
-		trans_table[ifstate[depth]][lineval]();
-		debug("process %s -> %s depth %d",
-		    linetype_name[lineval],
-		    ifstate_name[ifstate[depth]], depth);
-	}
-}
-
-/*
- * Parse a line and determine its type. We keep the preprocessor line
- * parser state between calls in the global variable linestate, with
- * help from skipcomment().
- */
-static Linetype
-get_line(void)
-{
-	const char *cp;
-	int cursym;
-	int kwlen;
-	Linetype retval;
-	Comment_state wascomment;
-
-	if (fgets(tline, MAXLINE, input) == NULL)
-		return (LT_EOF);
-	retval = LT_PLAIN;
-	wascomment = incomment;
-	cp = skipcomment(tline);
-	if (linestate == LS_START) {
-		if (*cp == '#') {
-			linestate = LS_HASH;
-			cp = skipcomment(cp + 1);
-		} else if (*cp != '\0')
-			linestate = LS_DIRTY;
-	}
-	if (!incomment && linestate == LS_HASH) {
-		keyword = tline + (cp - tline);
-		cp = skipsym(cp);
-		kwlen = cp - keyword;
-		/* no way can we deal with a continuation inside a keyword */
-		if (strncmp(cp, "\\\n", 2) == 0)
-			Eioccc();
-		if (strlcmp("ifdef", keyword, kwlen) == 0 ||
-		    strlcmp("ifndef", keyword, kwlen) == 0) {
-			cp = skipcomment(cp);
-			if ((cursym = findsym(cp)) < 0)
-				retval = LT_IF;
-			else {
-				retval = (keyword[2] == 'n')
-				    ? LT_FALSE : LT_TRUE;
-				if (value[cursym] == NULL)
-					retval = (retval == LT_TRUE)
-					    ? LT_FALSE : LT_TRUE;
-				if (ignore[cursym])
-					retval = (retval == LT_TRUE)
-					    ? LT_TRUEI : LT_FALSEI;
-			}
-			cp = skipsym(cp);
-		} else if (strlcmp("if", keyword, kwlen) == 0)
-			retval = ifeval(&cp);
-		else if (strlcmp("elif", keyword, kwlen) == 0)
-			retval = ifeval(&cp) - LT_IF + LT_ELIF;
-		else if (strlcmp("else", keyword, kwlen) == 0)
-			retval = LT_ELSE;
-		else if (strlcmp("endif", keyword, kwlen) == 0)
-			retval = LT_ENDIF;
-		else {
-			linestate = LS_DIRTY;
-			retval = LT_PLAIN;
-		}
-		cp = skipcomment(cp);
-		if (*cp != '\0') {
-			linestate = LS_DIRTY;
-			if (retval == LT_TRUE || retval == LT_FALSE ||
-			    retval == LT_TRUEI || retval == LT_FALSEI)
-				retval = LT_IF;
-			if (retval == LT_ELTRUE || retval == LT_ELFALSE)
-				retval = LT_ELIF;
-		}
-		if (retval != LT_PLAIN && (wascomment || incomment)) {
-			retval += LT_DODGY;
-			if (incomment)
-				linestate = LS_DIRTY;
-		}
-	}
-	if (linestate == LS_DIRTY) {
-		while (*cp != '\0')
-			cp = skipcomment(cp + 1);
-	}
-	debug("parser %s comment %s line",
-	    comment_name[incomment], linestate_name[linestate]);
-	return (retval);
-}
-
-/*
- * These are the binary operators that are supported by the expression
- * evaluator. Note that if support for division is added then we also
- * need short-circuiting booleans because of divide-by-zero.
- */
-static int op_lt(int a, int b) { return (a < b); }
-static int op_gt(int a, int b) { return (a > b); }
-static int op_le(int a, int b) { return (a <= b); }
-static int op_ge(int a, int b) { return (a >= b); }
-static int op_eq(int a, int b) { return (a == b); }
-static int op_ne(int a, int b) { return (a != b); }
-static int op_or(int a, int b) { return (a || b); }
-static int op_and(int a, int b) { return (a && b); }
-
-/*
- * An evaluation function takes three arguments, as follows: (1) a pointer to
- * an element of the precedence table which lists the operators at the current
- * level of precedence; (2) a pointer to an integer which will receive the
- * value of the expression; and (3) a pointer to a char* that points to the
- * expression to be evaluated and that is updated to the end of the expression
- * when evaluation is complete. The function returns LT_FALSE if the value of
- * the expression is zero, LT_TRUE if it is non-zero, or LT_IF if the
- * expression could not be evaluated.
- */
-struct ops;
-
-typedef Linetype eval_fn(const struct ops *, int *, const char **);
-
-static eval_fn eval_table, eval_unary;
-
-/*
- * The precedence table. Expressions involving binary operators are evaluated
- * in a table-driven way by eval_table. When it evaluates a subexpression it
- * calls the inner function with its first argument pointing to the next
- * element of the table. Innermost expressions have special non-table-driven
- * handling.
- */
-static const struct ops {
-	eval_fn *inner;
-	struct op {
-		const char *str;
-		int (*fn)(int, int);
-	} op[5];
-} eval_ops[] = {
-	{ eval_table, { { "||", op_or } } },
-	{ eval_table, { { "&&", op_and } } },
-	{ eval_table, { { "==", op_eq },
-			{ "!=", op_ne } } },
-	{ eval_unary, { { "<=", op_le },
-			{ ">=", op_ge },
-			{ "<", op_lt },
-			{ ">", op_gt } } }
-};
-
-/*
- * Function for evaluating the innermost parts of expressions,
- * viz. !expr (expr) defined(symbol) symbol number
- * We reset the keepthis flag when we find a non-constant subexpression.
- */
-static Linetype
-eval_unary(const struct ops *ops, int *valp, const char **cpp)
-{
-	const char *cp;
-	char *ep;
-	int sym;
-
-	cp = skipcomment(*cpp);
-	if (*cp == '!') {
-		debug("eval%td !", ops - eval_ops);
-		cp++;
-		if (eval_unary(ops, valp, &cp) == LT_IF)
-			return (LT_IF);
-		*valp = !*valp;
-	} else if (*cp == '(') {
-		cp++;
-		debug("eval%td (", ops - eval_ops);
-		if (eval_table(eval_ops, valp, &cp) == LT_IF)
-			return (LT_IF);
-		cp = skipcomment(cp);
-		if (*cp++ != ')')
-			return (LT_IF);
-	} else if (isdigit((unsigned char)*cp)) {
-		debug("eval%td number", ops - eval_ops);
-		*valp = strtol(cp, &ep, 0);
-		cp = skipsym(cp);
-	} else if (strncmp(cp, "defined", 7) == 0 && endsym(cp[7])) {
-		cp = skipcomment(cp+7);
-		debug("eval%td defined", ops - eval_ops);
-		if (*cp++ != '(')
-			return (LT_IF);
-		cp = skipcomment(cp);
-		sym = findsym(cp);
-		if (sym < 0 || symlist)
-			return (LT_IF);
-		*valp = (value[sym] != NULL);
-		cp = skipsym(cp);
-		cp = skipcomment(cp);
-		if (*cp++ != ')')
-			return (LT_IF);
-		keepthis = false;
-	} else if (!endsym(*cp)) {
-		debug("eval%td symbol", ops - eval_ops);
-		sym = findsym(cp);
-		if (sym < 0 || symlist)
-			return (LT_IF);
-		if (value[sym] == NULL)
-			*valp = 0;
-		else {
-			*valp = strtol(value[sym], &ep, 0);
-			if (*ep != '\0' || ep == value[sym])
-				return (LT_IF);
-		}
-		cp = skipsym(cp);
-		keepthis = false;
-	} else {
-		debug("eval%td bad expr", ops - eval_ops);
-		return (LT_IF);
-	}
-
-	*cpp = cp;
-	debug("eval%td = %d", ops - eval_ops, *valp);
-	return (*valp ? LT_TRUE : LT_FALSE);
-}
-
-/*
- * Table-driven evaluation of binary operators.
- */
-static Linetype
-eval_table(const struct ops *ops, int *valp, const char **cpp)
-{
-	const struct op *op;
-	const char *cp;
-	int val;
-
-	debug("eval%td", ops - eval_ops);
-	cp = *cpp;
-	if (ops->inner(ops+1, valp, &cp) == LT_IF)
-		return (LT_IF);
-	for (;;) {
-		cp = skipcomment(cp);
-		for (op = ops->op; op->str != NULL; op++)
-			if (strncmp(cp, op->str, strlen(op->str)) == 0)
-				break;
-		if (op->str == NULL)
-			break;
-		cp += strlen(op->str);
-		debug("eval%td %s", ops - eval_ops, op->str);
-		if (ops->inner(ops+1, &val, &cp) == LT_IF)
-			return (LT_IF);
-		*valp = op->fn(*valp, val);
-	}
-
-	*cpp = cp;
-	debug("eval%td = %d", ops - eval_ops, *valp);
-	return (*valp ? LT_TRUE : LT_FALSE);
-}
-
-/*
- * Evaluate the expression on a #if or #elif line. If we can work out
- * the result we return LT_TRUE or LT_FALSE accordingly, otherwise we
- * return just a generic LT_IF.
- */
-static Linetype
-ifeval(const char **cpp)
-{
-	int ret;
-	int val;
-
-	debug("eval %s", *cpp);
-	keepthis = killconsts ? false : true;
-	ret = eval_table(eval_ops, &val, cpp);
-	debug("eval = %d", val);
-	return (keepthis ? LT_IF : ret);
-}
-
-/*
- * Skip over comments and stop at the next character position that is
- * not whitespace. Between calls we keep the comment state in the
- * global variable incomment, and we also adjust the global variable
- * linestate when we see a newline.
- * XXX: doesn't cope with the buffer splitting inside a state transition.
- */
-static const char *
-skipcomment(const char *cp)
-{
-	if (text || ignoring[depth]) {
-		for (; isspace((unsigned char)*cp); cp++)
-			if (*cp == '\n')
-				linestate = LS_START;
-		return (cp);
-	}
-	while (*cp != '\0')
-		/* don't reset to LS_START after a line continuation */
-		if (strncmp(cp, "\\\n", 2) == 0)
-			cp += 2;
-		else switch (incomment) {
-		case NO_COMMENT:
-			if (strncmp(cp, "/\\\n", 3) == 0) {
-				incomment = STARTING_COMMENT;
-				cp += 3;
-			} else if (strncmp(cp, "/*", 2) == 0) {
-				incomment = C_COMMENT;
-				cp += 2;
-			} else if (strncmp(cp, "//", 2) == 0) {
-				incomment = CXX_COMMENT;
-				cp += 2;
-			} else if (strncmp(cp, "\n", 1) == 0) {
-				linestate = LS_START;
-				cp += 1;
-			} else if (strchr(" \t", *cp) != NULL) {
-				cp += 1;
-			} else
-				return (cp);
-			continue;
-		case CXX_COMMENT:
-			if (strncmp(cp, "\n", 1) == 0) {
-				incomment = NO_COMMENT;
-				linestate = LS_START;
-			}
-			cp += 1;
-			continue;
-		case C_COMMENT:
-			if (strncmp(cp, "*\\\n", 3) == 0) {
-				incomment = FINISHING_COMMENT;
-				cp += 3;
-			} else if (strncmp(cp, "*/", 2) == 0) {
-				incomment = NO_COMMENT;
-				cp += 2;
-			} else
-				cp += 1;
-			continue;
-		case STARTING_COMMENT:
-			if (*cp == '*') {
-				incomment = C_COMMENT;
-				cp += 1;
-			} else if (*cp == '/') {
-				incomment = CXX_COMMENT;
-				cp += 1;
-			} else {
-				incomment = NO_COMMENT;
-				linestate = LS_DIRTY;
-			}
-			continue;
-		case FINISHING_COMMENT:
-			if (*cp == '/') {
-				incomment = NO_COMMENT;
-				cp += 1;
-			} else
-				incomment = C_COMMENT;
-			continue;
-		default:
-			abort(); /* bug */
-		}
-	return (cp);
-}
-
-/*
- * Skip over an identifier.
- */
-static const char *
-skipsym(const char *cp)
-{
-	while (!endsym(*cp))
-		++cp;
-	return (cp);
-}
-
-/*
- * Look for the symbol in the symbol table. If it is found, we return
- * the symbol table index, else we return -1.
- */
-static int
-findsym(const char *str)
-{
-	const char *cp;
-	int symind;
-
-	cp = skipsym(str);
-	if (cp == str)
-		return (-1);
-	if (symlist)
-		printf("%.*s\n", (int)(cp-str), str);
-	for (symind = 0; symind < nsyms; ++symind) {
-		if (strlcmp(symname[symind], str, cp-str) == 0) {
-			debug("findsym %s %s", symname[symind],
-			    value[symind] ? value[symind] : "");
-			return (symind);
-		}
-	}
-	return (-1);
-}
-
-/*
- * Add a symbol to the symbol table.
- */
-static void
-addsym(bool ignorethis, bool definethis, char *sym)
-{
-	int symind;
-	char *val;
-
-	symind = findsym(sym);
-	if (symind < 0) {
-		if (nsyms >= MAXSYMS)
-			errx(2, "too many symbols");
-		symind = nsyms++;
-	}
-	symname[symind] = sym;
-	ignore[symind] = ignorethis;
-	val = sym + (skipsym(sym) - sym);
-	if (definethis) {
-		if (*val == '=') {
-			value[symind] = val+1;
-			*val = '\0';
-		} else if (*val == '\0')
-			value[symind] = "";
-		else
-			usage();
-	} else {
-		if (*val != '\0')
-			usage();
-		value[symind] = NULL;
-	}
-}
-
-/*
- * Compare s with n characters of t.
- * The same as strncmp() except that it checks that s[n] == '\0'.
- */
-static int
-strlcmp(const char *s, const char *t, size_t n)
-{
-	while (n-- && *t != '\0')
-		if (*s != *t)
-			return ((unsigned char)*s - (unsigned char)*t);
-		else
-			++s, ++t;
-	return ((unsigned char)*s);
-}
-
-/*
- * Diagnostics.
- */
-static void
-debug(const char *msg, ...)
-{
-	va_list ap;
-
-	if (debugging) {
-		va_start(ap, msg);
-		vwarnx(msg, ap);
-		va_end(ap);
-	}
-}
-
-static void
-error(const char *msg)
-{
-	if (depth == 0)
-		warnx("%s: %d: %s", filename, linenum, msg);
-	else
-		warnx("%s: %d: %s (#if line %d depth %d)",
-		    filename, linenum, msg, stifline[depth], depth);
-	fclose(output);
-	if (overwriting) {
-		unlink(tmpname);
-		errx(2, "%s unchanged", ofilename);
-	}
-	errx(2, "output may be truncated");
-}
diff --git a/usr.bin/unifdef/unifdefall.sh b/usr.bin/unifdef/unifdefall.sh
deleted file mode 100644
index 7c1d643..0000000
--- a/usr.bin/unifdef/unifdefall.sh
+++ /dev/null
@@ -1,29 +0,0 @@
-#!/bin/sh
-#
-# remove all the #if's from a source file
-#
-#	$dotat: things/unifdefall.sh,v 1.10 2002/09/24 19:52:11 fanf2 Exp $
-# $FreeBSD: src/usr.bin/unifdef/unifdefall.sh,v 1.2 2002/09/24 19:50:03 fanf Exp $
-
-set -e
-
-basename=`basename $0`
-tmp=`mktemp -d -t $basename` || exit 2
-
-unifdef -s "$@" | sort | uniq > $tmp/ctrl
-cpp -dM "$@" | sort |
-	sed -Ee 's/^#define[ 	]+(.*[^	 ])[ 	]*$/\1/' > $tmp/hashdefs
-sed -Ee 's/^([A-Za-z0-9_]+).*$/\1/' $tmp/hashdefs > $tmp/alldef
-comm -23 $tmp/ctrl $tmp/alldef > $tmp/undef
-comm -12 $tmp/ctrl $tmp/alldef > $tmp/def
-
-echo unifdef -k \\ > $tmp/cmd
-sed -Ee 's/^(.*)$/-U\1 \\/' $tmp/undef >> $tmp/cmd
-while read sym
-do	sed -Ee '/^('"$sym"')([(][^)]*[)])?([ 	]+(.*))?$/!d;s//-D\1=\4/' $tmp/hashdefs
-done < $tmp/def |
-	sed -Ee 's/\\/\\\\/g;s/"/\\"/g;s/^/"/;s/$/" \\/' >> $tmp/cmd
-echo '"$@"' >> $tmp/cmd
-sh $tmp/cmd "$@"
-
-rm -r $tmp