diff --git a/regress/lib/libc/regex/Makefile b/regress/lib/libc/regex/Makefile
deleted file mode 100644
index 7da7590c4331..000000000000
--- a/regress/lib/libc/regex/Makefile
+++ /dev/null
@@ -1,18 +0,0 @@
-#	$NetBSD: Makefile,v 1.6 2002/09/18 04:16:01 lukem Exp $
-
-NOMAN=		# defined
-
-.include <bsd.own.mk>
-
-PROG=		re
-SRCS=		main.c split.c debug.c
-CPPFLAGS+=	-I${NETBSDSRCDIR}/lib/libc/regex
-
-TESTS=		${.CURDIR}/tests
-
-regress:
-	./re < ${TESTS}
-	./re -el < ${TESTS}
-	./re -er < ${TESTS}
-
-.include <bsd.prog.mk>
diff --git a/regress/lib/libc/regex/debug.c b/regress/lib/libc/regex/debug.c
deleted file mode 100644
index 49e20bb69af9..000000000000
--- a/regress/lib/libc/regex/debug.c
+++ /dev/null
@@ -1,270 +0,0 @@
-/*	$NetBSD: debug.c,v 1.5 2008/04/28 20:23:05 martin Exp $	*/
-
-/*-
- * Copyright (c) 1993 The NetBSD Foundation, Inc.
- * All rights reserved.
- *
- * 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.
- *
- * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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 <stdio.h>
-#include <string.h>
-#include <ctype.h>
-#include <limits.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <regex.h>
-
-#include "utils.h"
-#include "regex2.h"
-#include "debug.ih"
-
-/*
- - regprint - print a regexp for debugging
- == void regprint(regex_t *r, FILE *d);
- */
-void
-regprint(r, d)
-regex_t *r;
-FILE *d;
-{
-	struct re_guts *g = r->re_g;
-	int i;
-	int c;
-	int last;
-	int nincat[NC];
-
-	fprintf(d, "%ld states, %d categories", (long)g->nstates,
-							g->ncategories);
-	fprintf(d, ", first %ld last %ld", (long)g->firststate,
-						(long)g->laststate);
-	if (g->iflags&USEBOL)
-		fprintf(d, ", USEBOL");
-	if (g->iflags&USEEOL)
-		fprintf(d, ", USEEOL");
-	if (g->iflags&BAD)
-		fprintf(d, ", BAD");
-	if (g->nsub > 0)
-		fprintf(d, ", nsub=%ld", (long)g->nsub);
-	if (g->must != NULL)
-		fprintf(d, ", must(%ld) `%*s'", (long)g->mlen, (int)g->mlen,
-								g->must);
-	if (g->backrefs)
-		fprintf(d, ", backrefs");
-	if (g->nplus > 0)
-		fprintf(d, ", nplus %ld", (long)g->nplus);
-	fprintf(d, "\n");
-	s_print(g, d);
-	for (i = 0; i < g->ncategories; i++) {
-		nincat[i] = 0;
-		for (c = CHAR_MIN; c <= CHAR_MAX; c++)
-			if (g->categories[c] == i)
-				nincat[i]++;
-	}
-	fprintf(d, "cc0#%d", nincat[0]);
-	for (i = 1; i < g->ncategories; i++)
-		if (nincat[i] == 1) {
-			for (c = CHAR_MIN; c <= CHAR_MAX; c++)
-				if (g->categories[c] == i)
-					break;
-			fprintf(d, ", %d=%s", i, regchar(c));
-		}
-	fprintf(d, "\n");
-	for (i = 1; i < g->ncategories; i++)
-		if (nincat[i] != 1) {
-			fprintf(d, "cc%d\t", i);
-			last = -1;
-			for (c = CHAR_MIN; c <= CHAR_MAX+1; c++)	/* +1 does flush */
-				if (c <= CHAR_MAX && g->categories[c] == i) {
-					if (last < 0) {
-						fprintf(d, "%s", regchar(c));
-						last = c;
-					}
-				} else {
-					if (last >= 0) {
-						if (last != c-1)
-							fprintf(d, "-%s",
-								regchar(c-1));
-						last = -1;
-					}
-				}
-			fprintf(d, "\n");
-		}
-}
-
-/*
- - s_print - print the strip for debugging
- == static void s_print(struct re_guts *g, FILE *d);
- */
-static void
-s_print(g, d)
-struct re_guts *g;
-FILE *d;
-{
-	sop *s;
-	cset *cs;
-	int i;
-	int done = 0;
-	sop opnd;
-	int col = 0;
-	int last;
-	sopno offset = 2;
-#	define	GAP()	{	if (offset % 5 == 0) { \
-					if (col > 40) { \
-						fprintf(d, "\n\t"); \
-						col = 0; \
-					} else { \
-						fprintf(d, " "); \
-						col++; \
-					} \
-				} else \
-					col++; \
-				offset++; \
-			}
-
-	if (OP(g->strip[0]) != OEND)
-		fprintf(d, "missing initial OEND!\n");
-	for (s = &g->strip[1]; !done; s++) {
-		opnd = OPND(*s);
-		switch (OP(*s)) {
-		case OEND:
-			fprintf(d, "\n");
-			done = 1;
-			break;
-		case OCHAR:
-			if (strchr("\\|()^$.[+*?{}!<> ", (char)opnd) != NULL)
-				fprintf(d, "\\%c", (char)opnd);
-			else
-				fprintf(d, "%s", regchar((char)opnd));
-			break;
-		case OBOL:
-			fprintf(d, "^");
-			break;
-		case OEOL:
-			fprintf(d, "$");
-			break;
-		case OBOW:
-			fprintf(d, "\\{");
-			break;
-		case OEOW:
-			fprintf(d, "\\}");
-			break;
-		case OANY:
-			fprintf(d, ".");
-			break;
-		case OANYOF:
-			fprintf(d, "[(%ld)", (long)opnd);
-			cs = &g->sets[opnd];
-			last = -1;
-			for (i = 0; i < g->csetsize+1; i++)	/* +1 flushes */
-				if (CHIN(cs, i) && i < g->csetsize) {
-					if (last < 0) {
-						fprintf(d, "%s", regchar(i));
-						last = i;
-					}
-				} else {
-					if (last >= 0) {
-						if (last != i-1)
-							fprintf(d, "-%s",
-								regchar(i-1));
-						last = -1;
-					}
-				}
-			fprintf(d, "]");
-			break;
-		case OBACK_:
-			fprintf(d, "(\\<%ld>", (long)opnd);
-			break;
-		case O_BACK:
-			fprintf(d, "<%ld>\\)", (long)opnd);
-			break;
-		case OPLUS_:
-			fprintf(d, "(+");
-			if (OP(*(s+opnd)) != O_PLUS)
-				fprintf(d, "<%ld>", (long)opnd);
-			break;
-		case O_PLUS:
-			if (OP(*(s-opnd)) != OPLUS_)
-				fprintf(d, "<%ld>", (long)opnd);
-			fprintf(d, "+)");
-			break;
-		case OQUEST_:
-			fprintf(d, "(?");
-			if (OP(*(s+opnd)) != O_QUEST)
-				fprintf(d, "<%ld>", (long)opnd);
-			break;
-		case O_QUEST:
-			if (OP(*(s-opnd)) != OQUEST_)
-				fprintf(d, "<%ld>", (long)opnd);
-			fprintf(d, "?)");
-			break;
-		case OLPAREN:
-			fprintf(d, "((<%ld>", (long)opnd);
-			break;
-		case ORPAREN:
-			fprintf(d, "<%ld>))", (long)opnd);
-			break;
-		case OCH_:
-			fprintf(d, "<");
-			if (OP(*(s+opnd)) != OOR2)
-				fprintf(d, "<%ld>", (long)opnd);
-			break;
-		case OOR1:
-			if (OP(*(s-opnd)) != OOR1 && OP(*(s-opnd)) != OCH_)
-				fprintf(d, "<%ld>", (long)opnd);
-			fprintf(d, "|");
-			break;
-		case OOR2:
-			fprintf(d, "|");
-			if (OP(*(s+opnd)) != OOR2 && OP(*(s+opnd)) != O_CH)
-				fprintf(d, "<%ld>", (long)opnd);
-			break;
-		case O_CH:
-			if (OP(*(s-opnd)) != OOR1)
-				fprintf(d, "<%ld>", (long)opnd);
-			fprintf(d, ">");
-			break;
-		default:
-			fprintf(d, "!%d(%d)!", OP(*s), opnd);
-			break;
-		}
-		if (!done)
-			GAP();
-	}
-}
-
-/*
- - regchar - make a character printable
- == static char *regchar(int ch);
- */
-static char *			/* -> representation */
-regchar(ch)
-int ch;
-{
-	static char buf[10];
-
-	if (isprint(ch) || ch == ' ')
-		sprintf(buf, "%c", ch);
-	else
-		sprintf(buf, "\\%o", ch);
-	return(buf);
-}
diff --git a/regress/lib/libc/regex/debug.ih b/regress/lib/libc/regex/debug.ih
deleted file mode 100644
index 66e14d8e227c..000000000000
--- a/regress/lib/libc/regex/debug.ih
+++ /dev/null
@@ -1,16 +0,0 @@
-/*	$NetBSD: debug.ih,v 1.3 2005/02/06 06:05:19 perry Exp $	*/
-
-/* ========= begin header generated by ./mkh ========= */
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/* === debug.c === */
-void regprint(regex_t *r, FILE *d);
-static void s_print(struct re_guts *g, FILE *d);
-static char *regchar(int ch);
-
-#ifdef __cplusplus
-}
-#endif
-/* ========= end header generated by ./mkh ========= */
diff --git a/regress/lib/libc/regex/main.c b/regress/lib/libc/regex/main.c
deleted file mode 100644
index 8c1bd8fb8e38..000000000000
--- a/regress/lib/libc/regex/main.c
+++ /dev/null
@@ -1,539 +0,0 @@
-/*	$NetBSD: main.c,v 1.8 2008/04/28 20:23:05 martin Exp $	*/
-
-/*-
- * Copyright (c) 1993 The NetBSD Foundation, Inc.
- * All rights reserved.
- *
- * 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.
- *
- * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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 <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/types.h>
-#include <regex.h>
-#include <assert.h>
-
-#include "main.ih"
-
-char *progname;
-int debug = 0;
-int line = 0;
-int status = 0;
-
-int copts = REG_EXTENDED;
-int eopts = 0;
-regoff_t startoff = 0;
-regoff_t endoff = 0;
-
-
-extern int split();
-extern void regprint();
-
-/*
- - main - do the simple case, hand off to regress() for regression
- */
-main(argc, argv)
-int argc;
-char *argv[];
-{
-	regex_t re;
-#	define	NS	10
-	regmatch_t subs[NS];
-	char erbuf[100];
-	int err;
-	size_t len;
-	int c;
-	int errflg = 0;
-	int i;
-	extern int optind;
-	extern char *optarg;
-
-	progname = argv[0];
-
-	while ((c = getopt(argc, argv, "c:e:S:E:x")) != -1)
-		switch (c) {
-		case 'c':	/* compile options */
-			copts = options('c', optarg);
-			break;
-		case 'e':	/* execute options */
-			eopts = options('e', optarg);
-			break;
-		case 'S':	/* start offset */
-			startoff = (regoff_t)atoi(optarg);
-			break;
-		case 'E':	/* end offset */
-			endoff = (regoff_t)atoi(optarg);
-			break;
-		case 'x':	/* Debugging. */
-			debug++;
-			break;
-		case '?':
-		default:
-			errflg++;
-			break;
-		}
-	if (errflg) {
-		fprintf(stderr, "usage: %s ", progname);
-		fprintf(stderr, "[-c copt][-C][-d] [re]\n");
-		exit(2);
-	}
-
-	if (optind >= argc) {
-		regress(stdin);
-		exit(status);
-	}
-
-	err = regcomp(&re, argv[optind++], copts);
-	if (err) {
-		len = regerror(err, &re, erbuf, sizeof(erbuf));
-		fprintf(stderr, "error %s, %d/%d `%s'\n",
-			eprint(err), len, sizeof(erbuf), erbuf);
-		exit(status);
-	}
-	regprint(&re, stdout);	
-
-	if (optind >= argc) {
-		regfree(&re);
-		exit(status);
-	}
-
-	if (eopts&REG_STARTEND) {
-		subs[0].rm_so = startoff;
-		subs[0].rm_eo = strlen(argv[optind]) - endoff;
-	}
-	err = regexec(&re, argv[optind], (size_t)NS, subs, eopts);
-	if (err) {
-		len = regerror(err, &re, erbuf, sizeof(erbuf));
-		fprintf(stderr, "error %s, %d/%d `%s'\n",
-			eprint(err), len, sizeof(erbuf), erbuf);
-		exit(status);
-	}
-	if (!(copts&REG_NOSUB)) {
-		len = (int)(subs[0].rm_eo - subs[0].rm_so);
-		if (subs[0].rm_so != -1) {
-			if (len != 0)
-				printf("match `%.*s'\n", len,
-					argv[optind] + subs[0].rm_so);
-			else
-				printf("match `'@%.1s\n",
-					argv[optind] + subs[0].rm_so);
-		}
-		for (i = 1; i < NS; i++)
-			if (subs[i].rm_so != -1)
-				printf("(%d) `%.*s'\n", i,
-					(int)(subs[i].rm_eo - subs[i].rm_so),
-					argv[optind] + subs[i].rm_so);
-	}
-	exit(status);
-}
-
-/*
- - regress - main loop of regression test
- == void regress(FILE *in);
- */
-void
-regress(in)
-FILE *in;
-{
-	char inbuf[1000];
-#	define	MAXF	10
-	char *f[MAXF];
-	int nf;
-	int i;
-	char erbuf[100];
-	size_t ne;
-	char *badpat = "invalid regular expression";
-#	define	SHORT	10
-	char *bpname = "REG_BADPAT";
-	regex_t re;
-
-	while (fgets(inbuf, sizeof(inbuf), in) != NULL) {
-		line++;
-		if (inbuf[0] == '#' || inbuf[0] == '\n')
-			continue;			/* NOTE CONTINUE */
-		inbuf[strlen(inbuf)-1] = '\0';	/* get rid of stupid \n */
-		if (debug)
-			fprintf(stdout, "%d:\n", line);
-		nf = split(inbuf, f, MAXF, "\t\t");
-		if (nf < 3) {
-			fprintf(stderr, "bad input, line %d\n", line);
-			exit(1);
-		}
-		for (i = 0; i < nf; i++)
-			if (strcmp(f[i], "\"\"") == 0)
-				f[i] = "";
-		if (nf <= 3)
-			f[3] = NULL;
-		if (nf <= 4)
-			f[4] = NULL;
-		try(f[0], f[1], f[2], f[3], f[4], options('c', f[1]));
-		if (opt('&', f[1]))	/* try with either type of RE */
-			try(f[0], f[1], f[2], f[3], f[4],
-					options('c', f[1]) &~ REG_EXTENDED);
-	}
-
-	ne = regerror(REG_BADPAT, (regex_t *)NULL, erbuf, sizeof(erbuf));
-	if (strcmp(erbuf, badpat) != 0 || ne != strlen(badpat)+1) {
-		fprintf(stderr, "end: regerror() test gave `%s' not `%s'\n",
-							erbuf, badpat);
-		status = 1;
-	}
-	ne = regerror(REG_BADPAT, (regex_t *)NULL, erbuf, (size_t)SHORT);
-	if (strncmp(erbuf, badpat, SHORT-1) != 0 || erbuf[SHORT-1] != '\0' ||
-						ne != strlen(badpat)+1) {
-		fprintf(stderr, "end: regerror() short test gave `%s' not `%.*s'\n",
-						erbuf, SHORT-1, badpat);
-		status = 1;
-	}
-	ne = regerror(REG_ITOA|REG_BADPAT, (regex_t *)NULL, erbuf, sizeof(erbuf));
-	if (strcmp(erbuf, bpname) != 0 || ne != strlen(bpname)+1) {
-		fprintf(stderr, "end: regerror() ITOA test gave `%s' not `%s'\n",
-						erbuf, bpname);
-		status = 1;
-	}
-	re.re_endp = bpname;
-	ne = regerror(REG_ATOI, &re, erbuf, sizeof(erbuf));
-	if (atoi(erbuf) != (int)REG_BADPAT) {
-		fprintf(stderr, "end: regerror() ATOI test gave `%s' not `%ld'\n",
-						erbuf, (long)REG_BADPAT);
-		status = 1;
-	} else if (ne != strlen(erbuf)+1) {
-		fprintf(stderr, "end: regerror() ATOI test len(`%s') = %ld\n",
-						erbuf, (long)REG_BADPAT);
-		status = 1;
-	}
-}
-
-/*
- - try - try it, and report on problems
- == void try(char *f0, char *f1, char *f2, char *f3, char *f4, int opts);
- */
-void
-try(f0, f1, f2, f3, f4, opts)
-char *f0;
-char *f1;
-char *f2;
-char *f3;
-char *f4;
-int opts;			/* may not match f1 */
-{
-	regex_t re;
-#	define	NSUBS	10
-	regmatch_t subs[NSUBS];
-#	define	NSHOULD	15
-	char *should[NSHOULD];
-	int nshould;
-	char erbuf[100];
-	int err;
-	int len;
-	char *type = (opts & REG_EXTENDED) ? "ERE" : "BRE";
-	int i;
-	char *grump;
-	char f0copy[1000];
-	char f2copy[1000];
-
-	strcpy(f0copy, f0);
-	re.re_endp = (opts&REG_PEND) ? f0copy + strlen(f0copy) : NULL;
-	fixstr(f0copy);
-	err = regcomp(&re, f0copy, opts);
-	if (err != 0 && (!opt('C', f1) || err != efind(f2))) {
-		/* unexpected error or wrong error */
-		len = regerror(err, &re, erbuf, sizeof(erbuf));
-		fprintf(stderr, "%d: %s error %s, %d/%d `%s'\n",
-					line, type, eprint(err), len,
-					sizeof(erbuf), erbuf);
-		status = 1;
-	} else if (err == 0 && opt('C', f1)) {
-		/* unexpected success */
-		fprintf(stderr, "%d: %s should have given REG_%s\n",
-						line, type, f2);
-		status = 1;
-		err = 1;	/* so we won't try regexec */
-	}
-
-	if (err != 0) {
-		regfree(&re);
-		return;
-	}
-
-	strcpy(f2copy, f2);
-	fixstr(f2copy);
-
-	if (options('e', f1)&REG_STARTEND) {
-		if (strchr(f2, '(') == NULL || strchr(f2, ')') == NULL)
-			fprintf(stderr, "%d: bad STARTEND syntax\n", line);
-		subs[0].rm_so = strchr(f2, '(') - f2 + 1;
-		subs[0].rm_eo = strchr(f2, ')') - f2;
-	}
-	err = regexec(&re, f2copy, NSUBS, subs, options('e', f1));
-
-	if (err != 0 && (f3 != NULL || err != REG_NOMATCH)) {
-		/* unexpected error or wrong error */
-		len = regerror(err, &re, erbuf, sizeof(erbuf));
-		fprintf(stderr, "%d: %s exec error %s, %d/%d `%s'\n",
-					line, type, eprint(err), len,
-					sizeof(erbuf), erbuf);
-		status = 1;
-	} else if (err != 0) {
-		/* nothing more to check */
-	} else if (f3 == NULL) {
-		/* unexpected success */
-		fprintf(stderr, "%d: %s exec should have failed\n",
-						line, type);
-		status = 1;
-		err = 1;		/* just on principle */
-	} else if (opts&REG_NOSUB) {
-		/* nothing more to check */
-	} else if ((grump = check(f2, subs[0], f3)) != NULL) {
-		fprintf(stderr, "%d: %s %s\n", line, type, grump);
-		status = 1;
-		err = 1;
-	}
-
-	if (err != 0 || f4 == NULL) {
-		regfree(&re);
-		return;
-	}
-
-	for (i = 1; i < NSHOULD; i++)
-		should[i] = NULL;
-	nshould = split(f4, should+1, NSHOULD-1, ",");
-	if (nshould == 0) {
-		nshould = 1;
-		should[1] = "";
-	}
-	for (i = 1; i < NSUBS; i++) {
-		grump = check(f2, subs[i], should[i]);
-		if (grump != NULL) {
-			fprintf(stderr, "%d: %s $%d %s\n", line,
-							type, i, grump);
-			status = 1;
-			err = 1;
-		}
-	}
-
-	regfree(&re);
-}
-
-/*
- - options - pick options out of a regression-test string
- == int options(int type, char *s);
- */
-int
-options(type, s)
-int type;			/* 'c' compile, 'e' exec */
-char *s;
-{
-	char *p;
-	int o = (type == 'c') ? copts : eopts;
-	char *legal = (type == 'c') ? "bisnmp" : "^$#tl";
-
-	for (p = s; *p != '\0'; p++)
-		if (strchr(legal, *p) != NULL)
-			switch (*p) {
-			case 'b':
-				o &= ~REG_EXTENDED;
-				break;
-			case 'i':
-				o |= REG_ICASE;
-				break;
-			case 's':
-				o |= REG_NOSUB;
-				break;
-			case 'n':
-				o |= REG_NEWLINE;
-				break;
-			case 'm':
-				o &= ~REG_EXTENDED;
-				o |= REG_NOSPEC;
-				break;
-			case 'p':
-				o |= REG_PEND;
-				break;
-			case '^':
-				o |= REG_NOTBOL;
-				break;
-			case '$':
-				o |= REG_NOTEOL;
-				break;
-			case '#':
-				o |= REG_STARTEND;
-				break;
-			case 't':	/* trace */
-				o |= REG_TRACE;
-				break;
-			case 'l':	/* force long representation */
-				o |= REG_LARGE;
-				break;
-			case 'r':	/* force backref use */
-				o |= REG_BACKR;
-				break;
-			}
-	return(o);
-}
-
-/*
- - opt - is a particular option in a regression string?
- == int opt(int c, char *s);
- */
-int				/* predicate */
-opt(c, s)
-int c;
-char *s;
-{
-	return(strchr(s, c) != NULL);
-}
-
-/*
- - fixstr - transform magic characters in strings
- == void fixstr(char *p);
- */
-void
-fixstr(p)
-char *p;
-{
-	if (p == NULL)
-		return;
-
-	for (; *p != '\0'; p++)
-		if (*p == 'N')
-			*p = '\n';
-		else if (*p == 'T')
-			*p = '\t';
-		else if (*p == 'S')
-			*p = ' ';
-		else if (*p == 'Z')
-			*p = '\0';
-}
-
-/*
- - check - check a substring match
- == char *check(char *str, regmatch_t sub, char *should);
- */
-char *				/* NULL or complaint */
-check(str, sub, should)
-char *str;
-regmatch_t sub;
-char *should;
-{
-	int len;
-	int shlen;
-	char *p;
-	static char grump[500];
-	char *at = NULL;
-
-	if (should != NULL && strcmp(should, "-") == 0)
-		should = NULL;
-	if (should != NULL && should[0] == '@') {
-		at = should + 1;
-		should = "";
-	}
-
-	/* check rm_so and rm_eo for consistency */
-	if (sub.rm_so > sub.rm_eo || (sub.rm_so == -1 && sub.rm_eo != -1) ||
-				(sub.rm_so != -1 && sub.rm_eo == -1) ||
-				(sub.rm_so != -1 && sub.rm_so < 0) ||
-				(sub.rm_eo != -1 && sub.rm_eo < 0) ) {
-		sprintf(grump, "start %ld end %ld", (long)sub.rm_so,
-							(long)sub.rm_eo);
-		return(grump);
-	}
-
-	/* check for no match */
-	if (sub.rm_so == -1 && should == NULL)
-		return(NULL);
-	if (sub.rm_so == -1)
-		return("did not match");
-
-	/* check for in range */
-	if (sub.rm_eo > strlen(str)) {
-		sprintf(grump, "start %ld end %ld, past end of string",
-					(long)sub.rm_so, (long)sub.rm_eo);
-		return(grump);
-	}
-
-	len = (int)(sub.rm_eo - sub.rm_so);
-	p = str + sub.rm_so;
-
-	/* check for not supposed to match */
-	if (should == NULL) {
-		sprintf(grump, "matched `%.*s'", len, p);
-		return(grump);
-	}
-
-	/* check for wrong match */
-	shlen = (int)strlen(should);
-	if (len != shlen || strncmp(p, should, (size_t)shlen) != 0) {
-		sprintf(grump, "matched `%.*s' instead", len, p);
-		return(grump);
-	}
-	if (shlen > 0)
-		return(NULL);
-
-	/* check null match in right place */
-	if (at == NULL)
-		return(NULL);
-	shlen = strlen(at);
-	if (shlen == 0)
-		shlen = 1;	/* force check for end-of-string */
-	if (strncmp(p, at, shlen) != 0) {
-		sprintf(grump, "matched null at `%.20s'", p);
-		return(grump);
-	}
-	return(NULL);
-}
-
-/*
- - eprint - convert error number to name
- == static char *eprint(int err);
- */
-static char *
-eprint(err)
-int err;
-{
-	static char epbuf[100];
-	size_t len;
-
-	len = regerror(REG_ITOA|err, (regex_t *)NULL, epbuf, sizeof(epbuf));
-	assert(len <= sizeof(epbuf));
-	return(epbuf);
-}
-
-/*
- - efind - convert error name to number
- == static int efind(char *name);
- */
-static int
-efind(name)
-char *name;
-{
-	static char efbuf[100];
-	size_t n;
-	regex_t re;
-
-	sprintf(efbuf, "REG_%s", name);
-	assert(strlen(efbuf) < sizeof(efbuf));
-	re.re_endp = efbuf;
-	(void) regerror(REG_ATOI, &re, efbuf, sizeof(efbuf));
-	return(atoi(efbuf));
-}
diff --git a/regress/lib/libc/regex/main.ih b/regress/lib/libc/regex/main.ih
deleted file mode 100644
index 6baa0d76a392..000000000000
--- a/regress/lib/libc/regex/main.ih
+++ /dev/null
@@ -1,21 +0,0 @@
-/*	$NetBSD: main.ih,v 1.3 2005/02/06 06:05:19 perry Exp $	*/
-
-/* ========= begin header generated by ./mkh ========= */
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/* === main.c === */
-void regress(FILE *in);
-void try(char *f0, char *f1, char *f2, char *f3, char *f4, int opts);
-int options(int type, char *s);
-int opt(int c, char *s);
-void fixstr(char *p);
-char *check(char *str, regmatch_t sub, char *should);
-static char *eprint(int err);
-static int efind(char *name);
-
-#ifdef __cplusplus
-}
-#endif
-/* ========= end header generated by ./mkh ========= */
diff --git a/regress/lib/libc/regex/split.c b/regress/lib/libc/regex/split.c
deleted file mode 100644
index 0a0b09f933da..000000000000
--- a/regress/lib/libc/regex/split.c
+++ /dev/null
@@ -1,344 +0,0 @@
-/*	$NetBSD: split.c,v 1.5 2008/04/28 20:23:05 martin Exp $	*/
-
-/*-
- * Copyright (c) 1993 The NetBSD Foundation, Inc.
- * All rights reserved.
- *
- * 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.
- *
- * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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 <stdio.h>
-#include <string.h>
-
-/*
- - split - divide a string into fields, like awk split()
- = int split(char *string, char *fields[], int nfields, char *sep);
- */
-int				/* number of fields, including overflow */
-split(string, fields, nfields, sep)
-char *string;
-char *fields[];			/* list is not NULL-terminated */
-int nfields;			/* number of entries available in fields[] */
-char *sep;			/* "" white, "c" single char, "ab" [ab]+ */
-{
-	char *p = string;
-	char c;			/* latest character */
-	char sepc = sep[0];
-	char sepc2;
-	int fn;
-	char **fp = fields;
-	char *sepp;
-	int trimtrail;
-
-	/* white space */
-	if (sepc == '\0') {
-		while ((c = *p++) == ' ' || c == '\t')
-			continue;
-		p--;
-		trimtrail = 1;
-		sep = " \t";	/* note, code below knows this is 2 long */
-		sepc = ' ';
-	} else
-		trimtrail = 0;
-	sepc2 = sep[1];		/* now we can safely pick this up */
-
-	/* catch empties */
-	if (*p == '\0')
-		return(0);
-
-	/* single separator */
-	if (sepc2 == '\0') {
-		fn = nfields;
-		for (;;) {
-			*fp++ = p;
-			fn--;
-			if (fn == 0)
-				break;
-			while ((c = *p++) != sepc)
-				if (c == '\0')
-					return(nfields - fn);
-			*(p-1) = '\0';
-		}
-		/* we have overflowed the fields vector -- just count them */
-		fn = nfields;
-		for (;;) {
-			while ((c = *p++) != sepc)
-				if (c == '\0')
-					return(fn);
-			fn++;
-		}
-		/* not reached */
-	}
-
-	/* two separators */
-	if (sep[2] == '\0') {
-		fn = nfields;
-		for (;;) {
-			*fp++ = p;
-			fn--;
-			while ((c = *p++) != sepc && c != sepc2)
-				if (c == '\0') {
-					if (trimtrail && **(fp-1) == '\0')
-						fn++;
-					return(nfields - fn);
-				}
-			if (fn == 0)
-				break;
-			*(p-1) = '\0';
-			while ((c = *p++) == sepc || c == sepc2)
-				continue;
-			p--;
-		}
-		/* we have overflowed the fields vector -- just count them */
-		fn = nfields;
-		while (c != '\0') {
-			while ((c = *p++) == sepc || c == sepc2)
-				continue;
-			p--;
-			fn++;
-			while ((c = *p++) != '\0' && c != sepc && c != sepc2)
-				continue;
-		}
-		/* might have to trim trailing white space */
-		if (trimtrail) {
-			p--;
-			while ((c = *--p) == sepc || c == sepc2)
-				continue;
-			p++;
-			if (*p != '\0') {
-				if (fn == nfields+1)
-					*p = '\0';
-				fn--;
-			}
-		}
-		return(fn);
-	}
-
-	/* n separators */
-	fn = 0;
-	for (;;) {
-		if (fn < nfields)
-			*fp++ = p;
-		fn++;
-		for (;;) {
-			c = *p++;
-			if (c == '\0')
-				return(fn);
-			sepp = sep;
-			while ((sepc = *sepp++) != '\0' && sepc != c)
-				continue;
-			if (sepc != '\0')	/* it was a separator */
-				break;
-		}
-		if (fn < nfields)
-			*(p-1) = '\0';
-		for (;;) {
-			c = *p++;
-			sepp = sep;
-			while ((sepc = *sepp++) != '\0' && sepc != c)
-				continue;
-			if (sepc == '\0')	/* it wasn't a separator */
-				break;
-		}
-		p--;
-	}
-
-	/* not reached */
-}
-
-#ifdef TEST_SPLIT
-
-
-/*
- * test program
- * pgm		runs regression
- * pgm sep	splits stdin lines by sep
- * pgm str sep	splits str by sep
- * pgm str sep n	splits str by sep n times
- */
-int
-main(argc, argv)
-int argc;
-char *argv[];
-{
-	char buf[512];
-	int n;
-#	define	MNF	10
-	char *fields[MNF];
-
-	if (argc > 4)
-		for (n = atoi(argv[3]); n > 0; n--) {
-			(void) strcpy(buf, argv[1]);
-		}
-	else if (argc > 3)
-		for (n = atoi(argv[3]); n > 0; n--) {
-			(void) strcpy(buf, argv[1]);
-			(void) split(buf, fields, MNF, argv[2]);
-		}
-	else if (argc > 2)
-		dosplit(argv[1], argv[2]);
-	else if (argc > 1)
-		while (fgets(buf, sizeof(buf), stdin) != NULL) {
-			buf[strlen(buf)-1] = '\0';	/* stomp newline */
-			dosplit(buf, argv[1]);
-		}
-	else
-		regress();
-
-	exit(0);
-}
-
-dosplit(string, seps)
-char *string;
-char *seps;
-{
-#	define	NF	5
-	char *fields[NF];
-	int nf;
-
-	nf = split(string, fields, NF, seps);
-	print(nf, NF, fields);
-}
-
-print(nf, nfp, fields)
-int nf;
-int nfp;
-char *fields[];
-{
-	int fn;
-	int bound;
-
-	bound = (nf > nfp) ? nfp : nf;
-	printf("%d:\t", nf);
-	for (fn = 0; fn < bound; fn++)
-		printf("\"%s\"%s", fields[fn], (fn+1 < nf) ? ", " : "\n");
-}
-
-#define	RNF	5		/* some table entries know this */
-struct {
-	char *str;
-	char *seps;
-	int nf;
-	char *fi[RNF];
-} tests[] = {
-	"",		" ",	0,	{ "" },
-	" ",		" ",	2,	{ "", "" },
-	"x",		" ",	1,	{ "x" },
-	"xy",		" ",	1,	{ "xy" },
-	"x y",		" ",	2,	{ "x", "y" },
-	"abc def  g ",	" ",	5,	{ "abc", "def", "", "g", "" },
-	"  a bcd",	" ",	4,	{ "", "", "a", "bcd" },
-	"a b c d e f",	" ",	6,	{ "a", "b", "c", "d", "e f" },
-	" a b c d ",	" ",	6,	{ "", "a", "b", "c", "d " },
-
-	"",		" _",	0,	{ "" },
-	" ",		" _",	2,	{ "", "" },
-	"x",		" _",	1,	{ "x" },
-	"x y",		" _",	2,	{ "x", "y" },
-	"ab _ cd",	" _",	2,	{ "ab", "cd" },
-	" a_b  c ",	" _",	5,	{ "", "a", "b", "c", "" },
-	"a b c_d e f",	" _",	6,	{ "a", "b", "c", "d", "e f" },
-	" a b c d ",	" _",	6,	{ "", "a", "b", "c", "d " },
-
-	"",		" _~",	0,	{ "" },
-	" ",		" _~",	2,	{ "", "" },
-	"x",		" _~",	1,	{ "x" },
-	"x y",		" _~",	2,	{ "x", "y" },
-	"ab _~ cd",	" _~",	2,	{ "ab", "cd" },
-	" a_b  c~",	" _~",	5,	{ "", "a", "b", "c", "" },
-	"a b_c d~e f",	" _~",	6,	{ "a", "b", "c", "d", "e f" },
-	"~a b c d ",	" _~",	6,	{ "", "a", "b", "c", "d " },
-
-	"",		" _~-",	0,	{ "" },
-	" ",		" _~-",	2,	{ "", "" },
-	"x",		" _~-",	1,	{ "x" },
-	"x y",		" _~-",	2,	{ "x", "y" },
-	"ab _~- cd",	" _~-",	2,	{ "ab", "cd" },
-	" a_b  c~",	" _~-",	5,	{ "", "a", "b", "c", "" },
-	"a b_c-d~e f",	" _~-",	6,	{ "a", "b", "c", "d", "e f" },
-	"~a-b c d ",	" _~-",	6,	{ "", "a", "b", "c", "d " },
-
-	"",		"  ",	0,	{ "" },
-	" ",		"  ",	2,	{ "", "" },
-	"x",		"  ",	1,	{ "x" },
-	"xy",		"  ",	1,	{ "xy" },
-	"x y",		"  ",	2,	{ "x", "y" },
-	"abc def  g ",	"  ",	4,	{ "abc", "def", "g", "" },
-	"  a bcd",	"  ",	3,	{ "", "a", "bcd" },
-	"a b c d e f",	"  ",	6,	{ "a", "b", "c", "d", "e f" },
-	" a b c d ",	"  ",	6,	{ "", "a", "b", "c", "d " },
-
-	"",		"",	0,	{ "" },
-	" ",		"",	0,	{ "" },
-	"x",		"",	1,	{ "x" },
-	"xy",		"",	1,	{ "xy" },
-	"x y",		"",	2,	{ "x", "y" },
-	"abc def  g ",	"",	3,	{ "abc", "def", "g" },
-	"\t a bcd",	"",	2,	{ "a", "bcd" },
-	"  a \tb\t c ",	"",	3,	{ "a", "b", "c" },
-	"a b c d e ",	"",	5,	{ "a", "b", "c", "d", "e" },
-	"a b\tc d e f",	"",	6,	{ "a", "b", "c", "d", "e f" },
-	" a b c d e f ",	"",	6,	{ "a", "b", "c", "d", "e f " },
-
-	NULL,		NULL,	0,	{ NULL },
-};
-
-regress()
-{
-	char buf[512];
-	int n;
-	char *fields[RNF+1];
-	int nf;
-	int i;
-	int printit;
-	char *f;
-
-	for (n = 0; tests[n].str != NULL; n++) {
-		(void) strcpy(buf, tests[n].str);
-		fields[RNF] = NULL;
-		nf = split(buf, fields, RNF, tests[n].seps);
-		printit = 0;
-		if (nf != tests[n].nf) {
-			printf("split `%s' by `%s' gave %d fields, not %d\n",
-				tests[n].str, tests[n].seps, nf, tests[n].nf);
-			printit = 1;
-		} else if (fields[RNF] != NULL) {
-			printf("split() went beyond array end\n");
-			printit = 1;
-		} else {
-			for (i = 0; i < nf && i < RNF; i++) {
-				f = fields[i];
-				if (f == NULL)
-					f = "(NULL)";
-				if (strcmp(f, tests[n].fi[i]) != 0) {
-					printf("split `%s' by `%s', field %d is `%s', not `%s'\n",
-						tests[n].str, tests[n].seps,
-						i, fields[i], tests[n].fi[i]);
-					printit = 1;
-				}
-			}
-		}
-		if (printit)
-			print(nf, RNF, fields);
-	}
-}
-#endif
diff --git a/regress/lib/libc/regex/tests b/regress/lib/libc/regex/tests
deleted file mode 100644
index 8e89f161b1ca..000000000000
--- a/regress/lib/libc/regex/tests
+++ /dev/null
@@ -1,477 +0,0 @@
-#	$NetBSD: tests,v 1.5 1995/04/20 22:40:00 cgd Exp $
-
-# regular expression test set
-# Lines are at least three fields, separated by one or more tabs.  "" stands
-# for an empty field.  First field is an RE.  Second field is flags.  If
-# C flag given, regcomp() is expected to fail, and the third field is the
-# error name (minus the leading REG_).
-#
-# Otherwise it is expected to succeed, and the third field is the string to
-# try matching it against.  If there is no fourth field, the match is
-# expected to fail.  If there is a fourth field, it is the substring that
-# the RE is expected to match.  If there is a fifth field, it is a comma-
-# separated list of what the subexpressions should match, with - indicating
-# no match for that one.  In both the fourth and fifth fields, a (sub)field
-# starting with @ indicates that the (sub)expression is expected to match
-# a null string followed by the stuff after the @; this provides a way to
-# test where null strings match.  The character `N' in REs and strings
-# is newline, `S' is space, `T' is tab, `Z' is NUL.
-#
-# The full list of flags:
-#	-	placeholder, does nothing
-#	b	RE is a BRE, not an ERE
-#	&	try it as both an ERE and a BRE
-#	C	regcomp() error expected, third field is error name
-#	i	REG_ICASE
-#	m	("mundane") REG_NOSPEC
-#	s	REG_NOSUB (not really testable)
-#	n	REG_NEWLINE
-#	^	REG_NOTBOL
-#	$	REG_NOTEOL
-#	#	REG_STARTEND (see below)
-#	p	REG_PEND
-#
-# For REG_STARTEND, the start/end offsets are those of the substring
-# enclosed in ().
-
-# basics
-a		&	a	a
-abc		&	abc	abc
-abc|de		-	abc	abc
-a|b|c		-	abc	a
-
-# parentheses and perversions thereof
-a(b)c		-	abc	abc
-a\(b\)c		b	abc	abc
-a(		C	EPAREN
-a(		b	a(	a(
-a\(		-	a(	a(
-a\(		bC	EPAREN
-a\(b		bC	EPAREN
-a(b		C	EPAREN
-a(b		b	a(b	a(b
-# gag me with a right parenthesis -- 1003.2 goofed here (my fault, partly)
-a)		-	a)	a)
-)		-	)	)
-# end gagging (in a just world, those *should* give EPAREN)
-a)		b	a)	a)
-a\)		bC	EPAREN
-\)		bC	EPAREN
-a()b		-	ab	ab
-a\(\)b		b	ab	ab
-
-# anchoring and REG_NEWLINE
-^abc$		&	abc	abc
-a^b		-	a^b
-a^b		b	a^b	a^b
-a$b		-	a$b
-a$b		b	a$b	a$b
-^		&	abc	@abc
-$		&	abc	@
-^$		&	""	@
-$^		-	""	@
-\($\)\(^\)	b	""	@
-# stop retching, those are legitimate (although disgusting)
-^^		-	""	@
-$$		-	""	@
-b$		&	abNc
-b$		&n	abNc	b
-^b$		&	aNbNc
-^b$		&n	aNbNc	b
-^$		&n	aNNb	@Nb
-^$		n	abc
-^$		n	abcN	@
-$^		n	aNNb	@Nb
-\($\)\(^\)	bn	aNNb	@Nb
-^^		n^	aNNb	@Nb
-$$		n	aNNb	@NN
-^a		^	a
-a$		$	a
-^a		^n	aNb
-^b		^n	aNb	b
-a$		$n	bNa
-b$		$n	bNa	b
-a*(^b$)c*	-	b	b
-a*\(^b$\)c*	b	b	b
-
-# certain syntax errors and non-errors
-|		C	EMPTY
-|		b	|	|
-*		C	BADRPT
-*		b	*	*
-+		C	BADRPT
-?		C	BADRPT
-""		&C	EMPTY
-()		-	abc	@abc
-\(\)		b	abc	@abc
-a||b		C	EMPTY
-|ab		C	EMPTY
-ab|		C	EMPTY
-(|a)b		C	EMPTY
-(a|)b		C	EMPTY
-(*a)		C	BADRPT
-(+a)		C	BADRPT
-(?a)		C	BADRPT
-({1}a)		C	BADRPT
-\(\{1\}a\)	bC	BADRPT
-(a|*b)		C	BADRPT
-(a|+b)		C	BADRPT
-(a|?b)		C	BADRPT
-(a|{1}b)	C	BADRPT
-^*		C	BADRPT
-^*		b	*	*
-^+		C	BADRPT
-^?		C	BADRPT
-^{1}		C	BADRPT
-^\{1\}		bC	BADRPT
-
-# metacharacters, backslashes
-a.c		&	abc	abc
-a[bc]d		&	abd	abd
-a\*c		&	a*c	a*c
-a\\b		&	a\b	a\b
-a\\\*b		&	a\*b	a\*b
-a\bc		&	abc	abc
-a\		&C	EESCAPE
-a\\bc		&	a\bc	a\bc
-\{		bC	BADRPT
-a\[b		&	a[b	a[b
-a[b		&C	EBRACK
-# trailing $ is a peculiar special case for the BRE code
-a$		&	a	a
-a$		&	a$
-a\$		&	a
-a\$		&	a$	a$
-a\\$		&	a
-a\\$		&	a$
-a\\$		&	a\$
-a\\$		&	a\	a\
-
-# back references, ugh
-a\(b\)\2c	bC	ESUBREG
-a\(b\1\)c	bC	ESUBREG
-a\(b*\)c\1d	b	abbcbbd	abbcbbd	bb
-a\(b*\)c\1d	b	abbcbd
-a\(b*\)c\1d	b	abbcbbbd
-^\(.\)\1	b	abc
-a\([bc]\)\1d	b	abcdabbd	abbd	b
-a\(\([bc]\)\2\)*d	b	abbccd	abbccd
-a\(\([bc]\)\2\)*d	b	abbcbd
-# actually, this next one probably ought to fail, but the spec is unclear
-a\(\(b\)*\2\)*d		b	abbbd	abbbd
-# here is a case that no NFA implementation does right
-\(ab*\)[ab]*\1	b	ababaaa	ababaaa	a
-# check out normal matching in the presence of back refs
-\(a\)\1bcd	b	aabcd	aabcd
-\(a\)\1bc*d	b	aabcd	aabcd
-\(a\)\1bc*d	b	aabd	aabd
-\(a\)\1bc*d	b	aabcccd	aabcccd
-\(a\)\1bc*[ce]d	b	aabcccd	aabcccd
-^\(a\)\1b\(c\)*cd$	b	aabcccd	aabcccd
-
-# ordinary repetitions
-ab*c		&	abc	abc
-ab+c		-	abc	abc
-ab?c		-	abc	abc
-a\(*\)b		b	a*b	a*b
-a\(**\)b	b	ab	ab
-a\(***\)b	bC	BADRPT
-*a		b	*a	*a
-**a		b	a	a
-***a		bC	BADRPT
-
-# the dreaded bounded repetitions
-{		&	{	{
-{abc		&	{abc	{abc
-{1		C	BADRPT
-{1}		C	BADRPT
-a{b		&	a{b	a{b
-a{1}b		-	ab	ab
-a\{1\}b		b	ab	ab
-a{1,}b		-	ab	ab
-a\{1,\}b	b	ab	ab
-a{1,2}b		-	aab	aab
-a\{1,2\}b	b	aab	aab
-a{1		C	EBRACE
-a\{1		bC	EBRACE
-a{1a		C	EBRACE
-a\{1a		bC	EBRACE
-a{1a}		C	BADBR
-a\{1a\}		bC	BADBR
-a{,2}		-	a{,2}	a{,2}
-a\{,2\}		bC	BADBR
-a{,}		-	a{,}	a{,}
-a\{,\}		bC	BADBR
-a{1,x}		C	BADBR
-a\{1,x\}	bC	BADBR
-a{1,x		C	EBRACE
-a\{1,x		bC	EBRACE
-a{300}		C	BADBR
-a\{300\}	bC	BADBR
-a{1,0}		C	BADBR
-a\{1,0\}	bC	BADBR
-ab{0,0}c	-	abcac	ac
-ab\{0,0\}c	b	abcac	ac
-ab{0,1}c	-	abcac	abc
-ab\{0,1\}c	b	abcac	abc
-ab{0,3}c	-	abbcac	abbc
-ab\{0,3\}c	b	abbcac	abbc
-ab{1,1}c	-	acabc	abc
-ab\{1,1\}c	b	acabc	abc
-ab{1,3}c	-	acabc	abc
-ab\{1,3\}c	b	acabc	abc
-ab{2,2}c	-	abcabbc	abbc
-ab\{2,2\}c	b	abcabbc	abbc
-ab{2,4}c	-	abcabbc	abbc
-ab\{2,4\}c	b	abcabbc	abbc
-((a{1,10}){1,10}){1,10}	-	a	a	a,a
-
-# multiple repetitions
-a**		&C	BADRPT
-a++		C	BADRPT
-a??		C	BADRPT
-a*+		C	BADRPT
-a*?		C	BADRPT
-a+*		C	BADRPT
-a+?		C	BADRPT
-a?*		C	BADRPT
-a?+		C	BADRPT
-a{1}{1}		C	BADRPT
-a*{1}		C	BADRPT
-a+{1}		C	BADRPT
-a?{1}		C	BADRPT
-a{1}*		C	BADRPT
-a{1}+		C	BADRPT
-a{1}?		C	BADRPT
-a*{b}		-	a{b}	a{b}
-a\{1\}\{1\}	bC	BADRPT
-a*\{1\}		bC	BADRPT
-a\{1\}*		bC	BADRPT
-
-# brackets, and numerous perversions thereof
-a[b]c		&	abc	abc
-a[ab]c		&	abc	abc
-a[^ab]c		&	adc	adc
-a[]b]c		&	a]c	a]c
-a[[b]c		&	a[c	a[c
-a[-b]c		&	a-c	a-c
-a[^]b]c		&	adc	adc
-a[^-b]c		&	adc	adc
-a[b-]c		&	a-c	a-c
-a[b		&C	EBRACK
-a[]		&C	EBRACK
-a[1-3]c		&	a2c	a2c
-a[3-1]c		&C	ERANGE
-a[1-3-5]c	&C	ERANGE
-a[[.-.]--]c	&	a-c	a-c
-a[1-		&C	ERANGE
-a[[.		&C	EBRACK
-a[[.x		&C	EBRACK
-a[[.x.		&C	EBRACK
-a[[.x.]		&C	EBRACK
-a[[.x.]]	&	ax	ax
-a[[.x,.]]	&C	ECOLLATE
-a[[.one.]]b	&	a1b	a1b
-a[[.notdef.]]b	&C	ECOLLATE
-a[[.].]]b	&	a]b	a]b
-a[[:alpha:]]c	&	abc	abc
-a[[:notdef:]]c	&C	ECTYPE
-a[[:		&C	EBRACK
-a[[:alpha	&C	EBRACK
-a[[:alpha:]	&C	EBRACK
-a[[:alpha,:]	&C	ECTYPE
-a[[:]:]]b	&C	ECTYPE
-a[[:-:]]b	&C	ECTYPE
-a[[:alph:]]	&C	ECTYPE
-a[[:alphabet:]]	&C	ECTYPE
-[[:alnum:]]+	-	-%@a0X-	a0X
-[[:alpha:]]+	-	-%@aX0-	aX
-[[:blank:]]+	-	aSSTb	SST
-[[:cntrl:]]+	-	aNTb	NT
-[[:digit:]]+	-	a019b	019
-[[:graph:]]+	-	Sa%bS	a%b
-[[:lower:]]+	-	AabC	ab
-[[:print:]]+	-	NaSbN	aSb
-[[:punct:]]+	-	S%-&T	%-&
-[[:space:]]+	-	aSNTb	SNT
-[[:upper:]]+	-	aBCd	BC
-[[:xdigit:]]+	-	p0f3Cq	0f3C
-a[[=b=]]c	&	abc	abc
-a[[=		&C	EBRACK
-a[[=b		&C	EBRACK
-a[[=b=		&C	EBRACK
-a[[=b=]		&C	EBRACK
-a[[=b,=]]	&C	ECOLLATE
-a[[=one=]]b	&	a1b	a1b
-
-# complexities
-a(((b)))c	-	abc	abc
-a(b|(c))d	-	abd	abd
-a(b*|c)d	-	abbd	abbd
-# just gotta have one DFA-buster, of course
-a[ab]{20}	-	aaaaabaaaabaaaabaaaab	aaaaabaaaabaaaabaaaab
-# and an inline expansion in case somebody gets tricky
-a[ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab]	-	aaaaabaaaabaaaabaaaab	aaaaabaaaabaaaabaaaab
-# and in case somebody just slips in an NFA...
-a[ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab](wee|week)(knights|night)	-	aaaaabaaaabaaaabaaaabweeknights	aaaaabaaaabaaaabaaaabweeknights
-# fish for anomalies as the number of states passes 32
-12345678901234567890123456789	-	a12345678901234567890123456789b	12345678901234567890123456789
-123456789012345678901234567890	-	a123456789012345678901234567890b	123456789012345678901234567890
-1234567890123456789012345678901	-	a1234567890123456789012345678901b	1234567890123456789012345678901
-12345678901234567890123456789012	-	a12345678901234567890123456789012b	12345678901234567890123456789012
-123456789012345678901234567890123	-	a123456789012345678901234567890123b	123456789012345678901234567890123
-# and one really big one, beyond any plausible word width
-1234567890123456789012345678901234567890123456789012345678901234567890	-	a1234567890123456789012345678901234567890123456789012345678901234567890b	1234567890123456789012345678901234567890123456789012345678901234567890
-# fish for problems as brackets go past 8
-[ab][cd][ef][gh][ij][kl][mn]	-	xacegikmoq	acegikm
-[ab][cd][ef][gh][ij][kl][mn][op]	-	xacegikmoq	acegikmo
-[ab][cd][ef][gh][ij][kl][mn][op][qr]	-	xacegikmoqy	acegikmoq
-[ab][cd][ef][gh][ij][kl][mn][op][q]	-	xacegikmoqy	acegikmoq
-
-# subtleties of matching
-abc		&	xabcy	abc
-a\(b\)?c\1d	b	acd
-aBc		i	Abc	Abc
-a[Bc]*d		i	abBCcd	abBCcd
-0[[:upper:]]1	&i	0a1	0a1
-0[[:lower:]]1	&i	0A1	0A1
-a[^b]c		&i	abc
-a[^b]c		&i	aBc
-a[^b]c		&i	adc	adc
-[a]b[c]		-	abc	abc
-[a]b[a]		-	aba	aba
-[abc]b[abc]	-	abc	abc
-[abc]b[abd]	-	abd	abd
-a(b?c)+d	-	accd	accd
-(wee|week)(knights|night)	-	weeknights	weeknights
-(we|wee|week|frob)(knights|night|day)	-	weeknights	weeknights
-a[bc]d		-	xyzaaabcaababdacd	abd
-a[ab]c		-	aaabc	abc
-abc		s	abc	abc
-a*		&	b	@b
-
-# Let's have some fun -- try to match a C comment.
-# first the obvious, which looks okay at first glance...
-/\*.*\*/	-	/*x*/	/*x*/
-# but...
-/\*.*\*/	-	/*x*/y/*z*/	/*x*/y/*z*/
-# okay, we must not match */ inside; try to do that...
-/\*([^*]|\*[^/])*\*/	-	/*x*/	/*x*/
-/\*([^*]|\*[^/])*\*/	-	/*x*/y/*z*/	/*x*/
-# but...
-/\*([^*]|\*[^/])*\*/	-	/*x**/y/*z*/	/*x**/y/*z*/
-# and a still fancier version, which does it right (I think)...
-/\*([^*]|\*+[^*/])*\*+/	-	/*x*/	/*x*/
-/\*([^*]|\*+[^*/])*\*+/	-	/*x*/y/*z*/	/*x*/
-/\*([^*]|\*+[^*/])*\*+/	-	/*x**/y/*z*/	/*x**/
-/\*([^*]|\*+[^*/])*\*+/	-	/*x****/y/*z*/	/*x****/
-/\*([^*]|\*+[^*/])*\*+/	-	/*x**x*/y/*z*/	/*x**x*/
-/\*([^*]|\*+[^*/])*\*+/	-	/*x***x/y/*z*/	/*x***x/y/*z*/
-
-# subexpressions
-a(b)(c)d	-	abcd	abcd	b,c
-a(((b)))c	-	abc	abc	b,b,b
-a(b|(c))d	-	abd	abd	b,-
-a(b*|c|e)d	-	abbd	abbd	bb
-a(b*|c|e)d	-	acd	acd	c
-a(b*|c|e)d	-	ad	ad	@d
-a(b?)c		-	abc	abc	b
-a(b?)c		-	ac	ac	@c
-a(b+)c		-	abc	abc	b
-a(b+)c		-	abbbc	abbbc	bbb
-a(b*)c		-	ac	ac	@c
-(a|ab)(bc([de]+)f|cde)	-	abcdef	abcdef	a,bcdef,de
-# the regression tester only asks for 9 subexpressions
-a(b)(c)(d)(e)(f)(g)(h)(i)(j)k	-	abcdefghijk	abcdefghijk	b,c,d,e,f,g,h,i,j
-a(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)l	-	abcdefghijkl	abcdefghijkl	b,c,d,e,f,g,h,i,j,k
-a([bc]?)c	-	abc	abc	b
-a([bc]?)c	-	ac	ac	@c
-a([bc]+)c	-	abc	abc	b
-a([bc]+)c	-	abcc	abcc	bc
-a([bc]+)bc	-	abcbc	abcbc	bc
-a(bb+|b)b	-	abb	abb	b
-a(bbb+|bb+|b)b	-	abb	abb	b
-a(bbb+|bb+|b)b	-	abbb	abbb	bb
-a(bbb+|bb+|b)bb	-	abbb	abbb	b
-(.*).*		-	abcdef	abcdef	abcdef
-(a*)*		-	bc	@b	@b
-
-# do we get the right subexpression when it is used more than once?
-a(b|c)*d	-	ad	ad	-
-a(b|c)*d	-	abcd	abcd	c
-a(b|c)+d	-	abd	abd	b
-a(b|c)+d	-	abcd	abcd	c
-a(b|c?)+d	-	ad	ad	@d
-a(b|c?)+d	-	abcd	abcd	@d
-a(b|c){0,0}d	-	ad	ad	-
-a(b|c){0,1}d	-	ad	ad	-
-a(b|c){0,1}d	-	abd	abd	b
-a(b|c){0,2}d	-	ad	ad	-
-a(b|c){0,2}d	-	abcd	abcd	c
-a(b|c){0,}d	-	ad	ad	-
-a(b|c){0,}d	-	abcd	abcd	c
-a(b|c){1,1}d	-	abd	abd	b
-a(b|c){1,1}d	-	acd	acd	c
-a(b|c){1,2}d	-	abd	abd	b
-a(b|c){1,2}d	-	abcd	abcd	c
-a(b|c){1,}d	-	abd	abd	b
-a(b|c){1,}d	-	abcd	abcd	c
-a(b|c){2,2}d	-	acbd	acbd	b
-a(b|c){2,2}d	-	abcd	abcd	c
-a(b|c){2,4}d	-	abcd	abcd	c
-a(b|c){2,4}d	-	abcbd	abcbd	b
-a(b|c){2,4}d	-	abcbcd	abcbcd	c
-a(b|c){2,}d	-	abcd	abcd	c
-a(b|c){2,}d	-	abcbd	abcbd	b
-a(b+|((c)*))+d	-	abd	abd	@d,@d,-
-a(b+|((c)*))+d	-	abcd	abcd	@d,@d,-
-
-# check out the STARTEND option
-[abc]		&#	a(b)c	b
-[abc]		&#	a(d)c
-[abc]		&#	a(bc)d	b
-[abc]		&#	a(dc)d	c
-.		&#	a()c
-b.*c		&#	b(bc)c	bc
-b.*		&#	b(bc)c	bc
-.*c		&#	b(bc)c	bc
-
-# plain strings, with the NOSPEC flag
-abc		m	abc	abc
-abc		m	xabcy	abc
-abc		m	xyz
-a*b		m	aba*b	a*b
-a*b		m	ab
-""		mC	EMPTY
-
-# cases involving NULs
-aZb		&	a	a
-aZb		&p	a
-aZb		&p#	(aZb)	aZb
-aZ*b		&p#	(ab)	ab
-a.b		&#	(aZb)	aZb
-a.*		&#	(aZb)c	aZb
-
-# word boundaries (ick)
-[[:<:]]a	&	a	a
-[[:<:]]a	&	ba
-[[:<:]]a	&	-a	a
-a[[:>:]]	&	a	a
-a[[:>:]]	&	ab
-a[[:>:]]	&	a-	a
-[[:<:]]a.c[[:>:]]	&	axcd-dayc-dazce-abc	abc
-[[:<:]]a.c[[:>:]]	&	axcd-dayc-dazce-abc-q	abc
-[[:<:]]a.c[[:>:]]	&	axc-dayc-dazce-abc	axc
-[[:<:]]b.c[[:>:]]	&	a_bxc-byc_d-bzc-q	bzc
-[[:<:]].x..[[:>:]]	&	y_xa_-_xb_y-_xc_-axdc	_xc_
-[[:<:]]a_b[[:>:]]	&	x_a_b
-
-# past problems, and suspected problems
-(A[1])|(A[2])|(A[3])|(A[4])|(A[5])|(A[6])|(A[7])|(A[8])|(A[9])|(A[A])	-	A1	A1
-abcdefghijklmnop	i	abcdefghijklmnop	abcdefghijklmnop
-abcdefghijklmnopqrstuv	i	abcdefghijklmnopqrstuv	abcdefghijklmnopqrstuv
-(ALAK)|(ALT[AB])|(CC[123]1)|(CM[123]1)|(GAMC)|(LC[23][EO ])|(SEM[1234])|(SL[ES][12])|(SLWW)|(SLF )|(SLDT)|(VWH[12])|(WH[34][EW])|(WP1[ESN])	-	CC11	CC11
-CC[13]1|a{21}[23][EO][123][Es][12]a{15}aa[34][EW]aaaaaaa[X]a	-	CC11	CC11
-Char \([a-z0-9_]*\)\[.*	b	Char xyz[k	Char xyz[k	xyz
-a?b	-	ab	ab
--\{0,1\}[0-9]*$	b	-5	-5