Fully integrate apropos(1) into mandoc(1).

Switch the argmode on the progname, including man(1).
Provide -f and -k options to switch the argmode.
Store the argmode inside struct search, generalizing the flags.
Derive the deftype from the argmode when needed instead of storing it.
Store the outkey inside struct search instead of passing it alone.
While here, get rid of the trailing blanks in Makefile.depend.

8 files changed, 189 insertions, 219 deletions

diff --git a/Makefile b/Makefile
index 0a699c62..cf68fa72 100644
--- a/Makefile
+++ b/Makefile
@@ -35,8 +35,7 @@ TESTSRCS	 = test-dirent-namlen.c \
 		   test-strsep.c \
 		   test-wchar.c
 
-SRCS		 = apropos.c \
-		   arch.c \
+SRCS		 = arch.c \
 		   att.c \
 		   cgi.c \
 		   chars.c \
@@ -228,7 +227,7 @@ MAKEWHATIS_OBJS	 = mandocdb.o mansearch_const.o manpath.o
 
 PRECONV_OBJS	 = preconv.o
 
-APROPOS_OBJS	 = apropos.o mansearch.o mansearch_const.o manpath.o
+APROPOS_OBJS	 = mansearch.o mansearch_const.o manpath.o
 
 CGI_OBJS	 = $(MANDOC_HTML_OBJS) \
 		   cgi.o \
@@ -369,7 +368,8 @@ Makefile.local config.h: configure ${TESTSRCS}
 depend: config.h
 	mkdep -f Makefile.depend $(CFLAGS) $(SRCS)
 	perl -e 'undef $$/; $$_ = <>; s|/usr/include/\S+||g; \
-		s|\\\n||g; s|  +| |g; print;' Makefile.depend > Makefile.tmp
+		s|\\\n||g; s|  +| |g; s| $$||mg; print;' \
+		Makefile.depend > Makefile.tmp
 	mv Makefile.tmp Makefile.depend
 
 libmandoc.a: $(COMPAT_OBJS) $(LIBMANDOC_OBJS)
diff --git a/Makefile.depend b/Makefile.depend
index 5f2e40fa..9ac53738 100644
--- a/Makefile.depend
+++ b/Makefile.depend
@@ -1,4 +1,3 @@
-apropos.o: apropos.c config.h manpath.h mansearch.h
 arch.o: arch.c config.h mdoc.h libmdoc.h arch.in
 att.o: att.c config.h mdoc.h libmdoc.h att.in
 cgi.o: cgi.c config.h mandoc.h mandoc_aux.h main.h manpath.h mansearch.h cgi.h
@@ -6,7 +5,7 @@ chars.o: chars.c config.h mandoc.h mandoc_aux.h libmandoc.h chars.in
 compat_fgetln.o: compat_fgetln.c config.h
 compat_fts.o: compat_fts.c config.h compat_fts.h
 compat_getsubopt.o: compat_getsubopt.c config.h
-compat_ohash.o: compat_ohash.c config.h
+compat_ohash.o: compat_ohash.c config.h compat_ohash.h
 compat_reallocarray.o: compat_reallocarray.c config.h
 compat_sqlite3_errstr.o: compat_sqlite3_errstr.c config.h
 compat_strcasestr.o: compat_strcasestr.c config.h
@@ -19,7 +18,7 @@ eqn_html.o: eqn_html.c config.h mandoc.h out.h html.h
 eqn_term.o: eqn_term.c config.h mandoc.h out.h term.h
 html.o: html.c config.h mandoc.h mandoc_aux.h libmandoc.h out.h html.h main.h
 lib.o: lib.c config.h mdoc.h libmdoc.h lib.in
-main.o: main.c config.h mandoc.h mandoc_aux.h main.h mdoc.h man.h
+main.o: main.c config.h mandoc.h mandoc_aux.h main.h mdoc.h man.h manpath.h mansearch.h
 man.o: man.c config.h man.h mandoc.h mandoc_aux.h libman.h libmandoc.h
 man_hash.o: man_hash.c config.h man.h mandoc.h libman.h
 man_html.o: man_html.c config.h mandoc.h mandoc_aux.h out.h html.h man.h main.h
@@ -28,10 +27,10 @@ man_term.o: man_term.c config.h mandoc.h mandoc_aux.h out.h man.h term.h main.h
 man_validate.o: man_validate.c config.h man.h mandoc.h mandoc_aux.h libman.h libmandoc.h
 mandoc.o: mandoc.c config.h mandoc.h mandoc_aux.h libmandoc.h
 mandoc_aux.o: mandoc_aux.c config.h mandoc.h mandoc_aux.h
-mandocdb.o: mandocdb.c config.h compat_fts.h mdoc.h man.h mandoc.h mandoc_aux.h manpath.h mansearch.h
+mandocdb.o: mandocdb.c config.h compat_fts.h compat_ohash.h mdoc.h man.h mandoc.h mandoc_aux.h manpath.h mansearch.h
 manpage.o: manpage.c config.h manpath.h mansearch.h
 manpath.o: manpath.c config.h mandoc_aux.h manpath.h
-mansearch.o: mansearch.c config.h mandoc.h mandoc_aux.h manpath.h mansearch.h
+mansearch.o: mansearch.c config.h compat_ohash.h mandoc.h mandoc_aux.h manpath.h mansearch.h
 mansearch_const.o: mansearch_const.c config.h manpath.h mansearch.h
 mdoc.o: mdoc.c config.h mdoc.h mandoc.h mandoc_aux.h libmdoc.h libmandoc.h
 mdoc_argv.o: mdoc_argv.c config.h mdoc.h mandoc.h mandoc_aux.h libmdoc.h libmandoc.h
@@ -43,7 +42,7 @@ mdoc_term.o: mdoc_term.c config.h mandoc.h mandoc_aux.h out.h term.h mdoc.h main
 mdoc_validate.o: mdoc_validate.c config.h mdoc.h mandoc.h mandoc_aux.h libmdoc.h libmandoc.h
 msec.o: msec.c config.h mandoc.h libmandoc.h msec.in
 out.o: out.c config.h mandoc_aux.h mandoc.h out.h
-preconv.o: preconv.c config.h 
+preconv.o: preconv.c config.h
 read.o: read.c config.h mandoc.h mandoc_aux.h libmandoc.h mdoc.h man.h main.h
 roff.o: roff.c config.h mandoc.h mandoc_aux.h libroff.h libmandoc.h predefs.in
 st.o: st.c config.h mdoc.h libmdoc.h st.in
@@ -58,14 +57,18 @@ term_ascii.o: term_ascii.c config.h mandoc.h mandoc_aux.h out.h term.h main.h
 term_ps.o: term_ps.c config.h mandoc.h mandoc_aux.h out.h main.h term.h
 tree.o: tree.c config.h mandoc.h mdoc.h man.h main.h
 vol.o: vol.c config.h mdoc.h libmdoc.h vol.in
-test-fgetln.o: test-fgetln.c 
-test-getsubopt.o: test-getsubopt.c 
-test-mmap.o: test-mmap.c 
-test-ohash.o: test-ohash.c 
-test-reallocarray.o: test-reallocarray.c 
-test-sqlite3_errstr.o: test-sqlite3_errstr.c 
-test-strcasestr.o: test-strcasestr.c 
-test-strlcat.o: test-strlcat.c 
-test-strlcpy.o: test-strlcpy.c 
-test-strptime.o: test-strptime.c 
-test-strsep.o: test-strsep.c 
+test-dirent-namlen.o: test-dirent-namlen.c
+test-fgetln.o: test-fgetln.c
+test-fts.o: test-fts.c
+test-getsubopt.o: test-getsubopt.c
+test-mmap.o: test-mmap.c
+test-ohash.o: test-ohash.c
+test-reallocarray.o: test-reallocarray.c
+test-sqlite3.o: test-sqlite3.c
+test-sqlite3_errstr.o: test-sqlite3_errstr.c
+test-strcasestr.o: test-strcasestr.c
+test-strlcat.o: test-strlcat.c
+test-strlcpy.o: test-strlcpy.c
+test-strptime.o: test-strptime.c
+test-strsep.o: test-strsep.c
+test-wchar.o: test-wchar.c
diff --git a/apropos.c b/apropos.c
deleted file mode 100644
index 66a83733..00000000
--- a/apropos.c
+++ /dev/null
@@ -1,123 +0,0 @@
-/*	$Id$ */
-/*
- * Copyright (c) 2012 Kristaps Dzonsons <kristaps@bsd.lv>
- * Copyright (c) 2013 Ingo Schwarze <schwarze@openbsd.org>
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-#include "config.h"
-
-#include <sys/param.h>
-#include <sys/types.h>
-
-#include <assert.h>
-#include <getopt.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include "manpath.h"
-#include "mansearch.h"
-
-
-int
-apropos(int argc, char *argv[])
-{
-	int		 ch, whatis;
-	struct mansearch search;
-	size_t		 i, sz;
-	struct manpage	*res;
-	struct manpaths	 paths;
-	char		*defpaths, *auxpaths;
-	char		*conf_file;
-	char		*progname;
-	const char	*outkey;
-	extern char	*optarg;
-	extern int	 optind;
-
-	progname = strrchr(argv[0], '/');
-	if (progname == NULL)
-		progname = argv[0];
-	else
-		++progname;
-
-	whatis = (0 == strncmp(progname, "whatis", 6));
-
-	memset(&paths, 0, sizeof(struct manpaths));
-	memset(&search, 0, sizeof(struct mansearch));
-
-	auxpaths = defpaths = NULL;
-	conf_file = NULL;
-	outkey = "Nd";
-
-	while (-1 != (ch = getopt(argc, argv, "C:M:m:O:S:s:")))
-		switch (ch) {
-		case 'C':
-			conf_file = optarg;
-			break;
-		case 'M':
-			defpaths = optarg;
-			break;
-		case 'm':
-			auxpaths = optarg;
-			break;
-		case 'O':
-			outkey = optarg;
-			break;
-		case 'S':
-			search.arch = optarg;
-			break;
-		case 's':
-			search.sec = optarg;
-			break;
-		default:
-			goto usage;
-		}
-
-	argc -= optind;
-	argv += optind;
-
-	if (0 == argc)
-		goto usage;
-
-	search.deftype = whatis ? TYPE_Nm : TYPE_Nm | TYPE_Nd;
-	search.flags = whatis ? MANSEARCH_WHATIS : 0;
-
-	manpath_parse(&paths, conf_file, defpaths, auxpaths);
-	mansearch_setup(1);
-	ch = mansearch(&search, &paths, argc, argv, outkey, &res, &sz);
-	manpath_free(&paths);
-
-	if (0 == ch)
-		goto usage;
-
-	for (i = 0; i < sz; i++) {
-		printf("%s - %s\n", res[i].names,
-		    NULL == res[i].output ? "" : res[i].output);
-		free(res[i].file);
-		free(res[i].names);
-		free(res[i].output);
-	}
-
-	free(res);
-	mansearch_setup(0);
-	return(sz ? EXIT_SUCCESS : EXIT_FAILURE);
-usage:
-	fprintf(stderr, "usage: %s [-C file] [-M path] [-m path] "
-			"[-O outkey] "
-			"[-S arch] [-s section]%s ...\n", progname,
-			whatis ? " name" : "\n               expression");
-	return(EXIT_FAILURE);
-}
diff --git a/cgi.c b/cgi.c
index 4f8339e2..42457840 100644
--- a/cgi.c
+++ b/cgi.c
@@ -973,8 +973,8 @@ pg_search(const struct req *req)
 
 	search.arch = req->q.arch;
 	search.sec = req->q.sec;
-	search.deftype = req->q.equal ? TYPE_Nm : (TYPE_Nm | TYPE_Nd);
-	search.flags = req->q.equal ? MANSEARCH_MAN : 0;
+	search.outkey = "Nd";
+	search.argmode = req->q.equal ? ARG_NAME : ARG_EXPR;
 
 	paths.sz = 1;
 	paths.paths = mandoc_malloc(sizeof(char *));
@@ -1003,7 +1003,7 @@ pg_search(const struct req *req)
 			ep++;
 	}
 
-	if (0 == mansearch(&search, &paths, sz, cp, "Nd", &res, &ressz))
+	if (0 == mansearch(&search, &paths, sz, cp, &res, &ressz))
 		pg_noresult(req, "You entered an invalid query.");
 	else if (0 == ressz)
 		pg_noresult(req, "No results found.");
diff --git a/main.c b/main.c
index de1f33f4..88947d97 100644
--- a/main.c
+++ b/main.c
@@ -32,6 +32,8 @@
 #include "main.h"
 #include "mdoc.h"
 #include "man.h"
+#include "manpath.h"
+#include "mansearch.h"
 
 #if !defined(__GNUC__) || (__GNUC__ < 2)
 # if !defined(lint)
@@ -68,17 +70,13 @@ struct	curparse {
 	char		  outopts[BUFSIZ]; /* buf of output opts */
 };
 
-#if HAVE_SQLITE3
-int			  apropos(int, char**);
-#endif
-
 static	int		  moptions(int *, char *);
 static	void		  mmsg(enum mandocerr, enum mandoclevel,
 				const char *, int, int, const char *);
 static	void		  parse(struct curparse *, int,
 				const char *, enum mandoclevel *);
 static	int		  toptions(struct curparse *, char *);
-static	void		  usage(void) __attribute__((noreturn));
+static	void		  usage(enum argmode) __attribute__((noreturn));
 static	void		  version(void) __attribute__((noreturn));
 static	int		  woptions(struct curparse *, char *);
 
@@ -88,11 +86,19 @@ static	const char	 *progname;
 int
 main(int argc, char *argv[])
 {
-	int		 c;
 	struct curparse	 curp;
-	int		 options;
-	enum mandoclevel rc;
+	struct mansearch search;
+	struct manpaths	 paths;
+	char		*conf_file, *defpaths, *auxpaths;
 	char		*defos;
+#if HAVE_SQLITE3
+	struct manpage	*res;
+	size_t		 i, sz;
+#endif
+	enum mandoclevel rc;
+	int		 show_usage;
+	int		 options;
+	int		 c;
 
 	progname = strrchr(argv[0], '/');
 	if (progname == NULL)
@@ -100,21 +106,40 @@ main(int argc, char *argv[])
 	else
 		++progname;
 
-#if HAVE_SQLITE3
-	if (0 == strncmp(progname, "apropos", 7) ||
-	    0 == strncmp(progname, "whatis", 6))
-		return(apropos(argc, argv));
-#endif
+	/* Search options. */
 
-	memset(&curp, 0, sizeof(struct curparse));
+	memset(&paths, 0, sizeof(struct manpaths));
+	conf_file = defpaths = auxpaths = NULL;
 
-	options = MPARSE_SO;
+	memset(&search, 0, sizeof(struct mansearch));
+	search.outkey = "Nd";
+
+	if (strcmp(progname, "man") == 0)
+		search.argmode = ARG_NAME;
+	else if (strncmp(progname, "apropos", 7) == 0)
+		search.argmode = ARG_EXPR;
+	else if (strncmp(progname, "whatis", 6) == 0)
+		search.argmode = ARG_WORD;
+	else
+		search.argmode = ARG_FILE;
+
+	/* Parser and formatter options. */
+
+	memset(&curp, 0, sizeof(struct curparse));
 	curp.outtype = OUTT_ASCII;
 	curp.wlevel  = MANDOCLEVEL_FATAL;
+	options = MPARSE_SO;
 	defos = NULL;
 
-	while (-1 != (c = getopt(argc, argv, "I:m:O:T:VW:")))
+	show_usage = 0;
+	while (-1 != (c = getopt(argc, argv, "C:fI:kM:m:O:S:s:T:VW:"))) {
 		switch (c) {
+		case 'C':
+			conf_file = optarg;
+			break;
+		case 'f':
+			search.argmode = ARG_WORD;
+			break;
 		case 'I':
 			if (strncmp(optarg, "os=", 3)) {
 				fprintf(stderr,
@@ -130,14 +155,26 @@ main(int argc, char *argv[])
 			}
 			defos = mandoc_strdup(optarg + 3);
 			break;
+		case 'k':
+			search.argmode = ARG_EXPR;
+			break;
+		case 'M':
+			defpaths = optarg;
+			break;
 		case 'm':
-			if ( ! moptions(&options, optarg))
-				return((int)MANDOCLEVEL_BADARG);
+			auxpaths = optarg;
 			break;
 		case 'O':
+			search.outkey = optarg;
 			(void)strlcat(curp.outopts, optarg, BUFSIZ);
 			(void)strlcat(curp.outopts, ",", BUFSIZ);
 			break;
+		case 'S':
+			search.arch = optarg;
+			break;
+		case 's':
+			search.sec = optarg;
+			break;
 		case 'T':
 			if ( ! toptions(&curp, optarg))
 				return((int)MANDOCLEVEL_BADARG);
@@ -150,9 +187,45 @@ main(int argc, char *argv[])
 			version();
 			/* NOTREACHED */
 		default:
-			usage();
-			/* NOTREACHED */
+			show_usage = 1;
+			break;
 		}
+	}
+
+	if (show_usage)
+		usage(search.argmode);
+
+	argc -= optind;
+	argv += optind;
+
+	/* man(1), whatis(1), apropos(1) */
+
+	if (search.argmode != ARG_FILE) {
+#if HAVE_SQLITE3
+		if (argc == 0)
+			usage(search.argmode);
+		manpath_parse(&paths, conf_file, defpaths, auxpaths);
+		mansearch_setup(1);
+		if( ! mansearch(&search, &paths, argc, argv, &res, &sz))
+			usage(search.argmode);
+		manpath_free(&paths);
+		for (i = 0; i < sz; i++)
+			printf("%s - %s\n", res[i].names,
+			    res[i].output == NULL ? "" : res[i].output);
+		mansearch_free(res, sz);
+		mansearch_setup(0);
+		return((int)MANDOCLEVEL_OK);
+#else
+		fputs("mandoc: database support not compiled in\n",
+		    stderr);
+		return((int)MANDOCLEVEL_BADARG);
+#endif
+	}
+
+	/* mandoc(1) */
+
+	if ( ! moptions(&options, auxpaths))
+		return((int)MANDOCLEVEL_BADARG);
 
 	curp.mp = mparse_alloc(options, curp.wlevel, mmsg, defos);
 
@@ -162,9 +235,6 @@ main(int argc, char *argv[])
 	if (OUTT_MAN == curp.outtype)
 		mparse_keep(curp.mp);
 
-	argc -= optind;
-	argv += optind;
-
 	rc = MANDOCLEVEL_OK;
 
 	if (NULL == *argv)
@@ -190,24 +260,35 @@ static void
 version(void)
 {
 
-	printf("%s %s\n", progname, VERSION);
+	printf("mandoc %s\n", VERSION);
 	exit((int)MANDOCLEVEL_OK);
 }
 
 static void
-usage(void)
+usage(enum argmode argmode)
 {
 
-	fprintf(stderr, "usage: %s "
-			"[-V] "
-			"[-Ios=name] "
-			"[-mformat] "
-			"[-Ooption] "
-			"[-Toutput] "
-			"[-Wlevel]\n"
-			"\t      [file ...]\n",
-			progname);
-
+	switch (argmode) {
+	case ARG_FILE:
+		fputs("usage: mandoc [-V] [-Ios=name] [-mformat]"
+		    " [-Ooption] [-Toutput] [-Wlevel]\n"
+		    "\t      [file ...]\n", stderr);
+		break;
+	case ARG_NAME:
+		fputs("usage: man [-acfhkVw] [-C file] "
+		    "[-M path] [-m path] [-S arch] [-s section]\n"
+		    "\t   [section] name ...\n", stderr);
+		break;
+	case ARG_WORD:
+		fputs("usage: whatis [-V] [-C file] [-M path] [-m path] "
+		    "[-S arch] [-s section] name ...\n", stderr);
+		break;
+	case ARG_EXPR:
+		fputs("usage: apropos [-V] [-C file] [-M path] [-m path] "
+		    "[-O outkey] [-S arch]\n"
+		    "\t       [-s section] expression ...\n", stderr);
+		break;
+	}
 	exit((int)MANDOCLEVEL_BADARG);
 }
 
@@ -328,7 +409,9 @@ static int
 moptions(int *options, char *arg)
 {
 
-	if (0 == strcmp(arg, "doc"))
+	if (arg == NULL)
+		/* nothing to do */;
+	else if (0 == strcmp(arg, "doc"))
 		*options |= MPARSE_MDOC;
 	else if (0 == strcmp(arg, "andoc"))
 		/* nothing to do */;
diff --git a/manpage.c b/manpage.c
index 28d1c3d8..27ffd392 100644
--- a/manpage.c
+++ b/manpage.c
@@ -87,10 +87,11 @@ main(int argc, char *argv[])
 	if (0 == argc)
 		goto usage;
 
-	search.deftype = TYPE_Nm | TYPE_Nd;
+	search.outkey = "Nd";
+	search.argmode = ARG_EXPR;
 
 	manpath_parse(&paths, conf_file, defpaths, auxpaths);
-	ch = mansearch(&search, &paths, argc, argv, "Nd", &res, &sz);
+	ch = mansearch(&search, &paths, argc, argv, &res, &sz);
 	manpath_free(&paths);
 
 	if (0 == ch)
diff --git a/mansearch.c b/mansearch.c
index 4a74d0db..a4d03d08 100644
--- a/mansearch.c
+++ b/mansearch.c
@@ -159,7 +159,6 @@ int
 mansearch(const struct mansearch *search,
 		const struct manpaths *paths,
 		int argc, char *argv[],
-		const char *outkey,
 		struct manpage **res, size_t *sz)
 {
 	int		 fd, rc, c, indexbit;
@@ -195,11 +194,11 @@ mansearch(const struct mansearch *search,
 		goto out;
 
 	outbit = 0;
-	if (NULL != outkey) {
+	if (NULL != search->outkey) {
 		for (indexbit = 0, iterbit = 1;
 		     indexbit < mansearch_keymax;
 		     indexbit++, iterbit <<= 1) {
-			if (0 == strcasecmp(outkey,
+			if (0 == strcasecmp(search->outkey,
 			    mansearch_keynames[indexbit])) {
 				outbit = iterbit;
 				break;
@@ -367,6 +366,19 @@ out:
 	return(rc);
 }
 
+void
+mansearch_free(struct manpage *res, size_t sz)
+{
+	size_t	 i;
+
+	for (i = 0; i < sz; i++) {
+		free(res[i].file);
+		free(res[i].names);
+		free(res[i].output);
+	}
+	free(res);
+}
+
 static int
 manpage_compare(const void *vp1, const void *vp2)
 {
@@ -739,35 +751,29 @@ exprterm(const struct mansearch *search, char *buf, int cs)
 
 	e = mandoc_calloc(1, sizeof(struct expr));
 
-	if (MANSEARCH_MAN & search->flags) {
-		e->bits = search->deftype;
+	if (search->argmode == ARG_NAME) {
+		e->bits = TYPE_Nm;
 		e->substr = buf;
 		e->equal = 1;
 		return(e);
 	}
 
 	/*
-	 * Look for an '=' or '~' operator,
-	 * unless forced to some fixed macro keys.
+	 * Separate macro keys from search string.
+	 * If needed, request regular expression handling
+	 * by setting e->substr to NULL.
 	 */
 
-	if (MANSEARCH_WHATIS & search->flags)
-		val = NULL;
-	else
-		val = strpbrk(buf, "=~");
-
-	if (NULL == val) {
-		e->bits = search->deftype;
+	if (search->argmode == ARG_WORD) {
+		e->bits = TYPE_Nm;
+		e->substr = NULL;
+		mandoc_asprintf(&val, "[[:<:]]%s[[:>:]]", buf);
+	} else if ((val = strpbrk(buf, "=~")) == NULL) {
+		e->bits = TYPE_Nm | TYPE_Nd;
 		e->substr = buf;
-
-	/*
-	 * Found an operator.
-	 * Regexp search is requested by !e->substr.
-	 */
-
 	} else {
 		if (val == buf)
-			e->bits = search->deftype;
+			e->bits = TYPE_Nm | TYPE_Nd;
 		if ('=' == *val)
 			e->substr = val + 1;
 		*val++ = '\0';
@@ -777,15 +783,10 @@ exprterm(const struct mansearch *search, char *buf, int cs)
 
 	/* Compile regular expressions. */
 
-	if (MANSEARCH_WHATIS & search->flags) {
-		e->substr = NULL;
-		mandoc_asprintf(&val, "[[:<:]]%s[[:>:]]", buf);
-	}
-
 	if (NULL == e->substr) {
 		irc = regcomp(&e->regexp, val,
 		    REG_EXTENDED | REG_NOSUB | (cs ? 0 : REG_ICASE));
-		if (MANSEARCH_WHATIS & search->flags)
+		if (search->argmode == ARG_WORD)
 			free(val);
 		if (irc) {
 			regerror(irc, &e->regexp, errbuf, sizeof(errbuf));
diff --git a/mansearch.h b/mansearch.h
index 7c5a7c00..d36173fd 100644
--- a/mansearch.h
+++ b/mansearch.h
@@ -68,7 +68,12 @@
 #define	NAME_HEAD	 0x0000004000000010ULL
 #define	NAME_MASK	 0x000000000000001fULL
 
-__BEGIN_DECLS
+enum	argmode {
+	ARG_FILE = 0,
+	ARG_NAME,
+	ARG_WORD,
+	ARG_EXPR
+};
 
 struct	manpage {
 	char		*file; /* to be prefixed by manpath */
@@ -81,21 +86,21 @@ struct	manpage {
 struct	mansearch {
 	const char	*arch; /* architecture/NULL */
 	const char	*sec; /* mansection/NULL */
-	uint64_t	 deftype; /* type if no key  */
-	int		 flags;
-#define	MANSEARCH_WHATIS 0x01 /* whatis(1) mode: whole words, no keys */
-#define	MANSEARCH_MAN    0x02 /* man(1) mode: string equality, no keys */
+	const char	*outkey; /* show content of this macro */
+	enum argmode	 argmode; /* interpretation of arguments */
 };
 
+__BEGIN_DECLS
+
 int	mansearch_setup(int);
 int	mansearch(const struct mansearch *cfg, /* options */
 		const struct manpaths *paths, /* manpaths */
 		int argc, /* size of argv */
 		char *argv[],  /* search terms */
-		const char *outkey, /* name of additional output key */
 		struct manpage **res, /* results */
 		size_t *ressz); /* results returned */
+void	mansearch_free(struct manpage *, size_t);
 
 __END_DECLS
 
-#endif /*!MANSEARCH_H*/
+#endif /* MANSEARCH_H */