add missing HISTORY information

[mandoc.git] / main.c

diff --git a/main.c b/main.c
index 6785ed8117cfbdcc87881f3a6c05711f38ca877e..1b1b5b73a11a8c1b16a85cf709affcd88c35927c 100644 (file)
--- a/main.c
+++ b/main.c
@@ -1,51 +1,72 @@
-/*     $Id: main.c,v 1.157 2011/03/21 12:04:26 kristaps Exp $ */
+/*     $Id: main.c,v 1.280 2017/01/27 13:47:10 schwarze Exp $ */

 /*
 /*

- * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
- * Copyright (c) 2010, 2011 Ingo Schwarze <schwarze@openbsd.org>
+ * Copyright (c) 2008-2012 Kristaps Dzonsons <kristaps@bsd.lv>
+ * Copyright (c) 2010-2012, 2014-2017 Ingo Schwarze <schwarze@openbsd.org>
+ * Copyright (c) 2010 Joerg Sonnenberger <joerg@netbsd.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.
  *
  *
  * 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
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES

  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF

- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS 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.
  */
  * 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.
  */

-#ifdef HAVE_CONFIG_H

 #include "config.h"
 #include "config.h"

-#endif
+
+#include <sys/types.h>
+#include <sys/param.h> /* MACHINE */
+#include <sys/wait.h>

 
 #include <assert.h>
 
 #include <assert.h>

+#include <ctype.h>
+#if HAVE_ERR
+#include <err.h>
+#endif
+#include <errno.h>
+#include <fcntl.h>
+#include <glob.h>
+#if HAVE_SANDBOX_INIT
+#include <sandbox.h>
+#endif
+#include <signal.h>

 #include <stdio.h>
 #include <stdint.h>
 #include <stdlib.h>
 #include <string.h>
 #include <stdio.h>
 #include <stdint.h>
 #include <stdlib.h>
 #include <string.h>

+#include <time.h>

 #include <unistd.h>
 
 #include <unistd.h>
 

+#include "mandoc_aux.h"

 #include "mandoc.h"
 #include "mandoc.h"

-#include "main.h"
+#include "roff.h"

 #include "mdoc.h"
 #include "man.h"
 #include "mdoc.h"
 #include "man.h"

-
-#if !defined(__GNUC__) || (__GNUC__ < 2)
-# if !defined(lint)
-#  define __attribute__(x)
-# endif
-#endif /* !defined(__GNUC__) || (__GNUC__ < 2) */
-
-typedef        void            (*out_mdoc)(void *, const struct mdoc *);
-typedef        void            (*out_man)(void *, const struct man *);
-typedef        void            (*out_free)(void *);
+#include "tag.h"
+#include "main.h"
+#include "manconf.h"
+#include "mansearch.h"
+
+enum   outmode {
+       OUTMODE_DEF = 0,
+       OUTMODE_FLN,
+       OUTMODE_LST,
+       OUTMODE_ALL,
+       OUTMODE_INT,
+       OUTMODE_ONE
+};

 
 enum   outt {
        OUTT_ASCII = 0, /* -Tascii */
 
 enum   outt {
        OUTT_ASCII = 0, /* -Tascii */

+       OUTT_LOCALE,    /* -Tlocale */
+       OUTT_UTF8,      /* -Tutf8 */

        OUTT_TREE,      /* -Ttree */
        OUTT_TREE,      /* -Ttree */

+       OUTT_MAN,       /* -Tman */

        OUTT_HTML,      /* -Thtml */
        OUTT_HTML,      /* -Thtml */

-       OUTT_XHTML,     /* -Txhtml */

        OUTT_LINT,      /* -Tlint */
        OUTT_PS,        /* -Tps */
        OUTT_PDF        /* -Tpdf */
        OUTT_LINT,      /* -Tlint */
        OUTT_PS,        /* -Tps */
        OUTT_PDF        /* -Tpdf */


@@ -55,352 +76,856 @@ struct    curparse {
        struct mparse    *mp;
        enum mandoclevel  wlevel;       /* ignore messages below this */
        int               wstop;        /* stop after a file with a warning */
        struct mparse    *mp;
        enum mandoclevel  wlevel;       /* ignore messages below this */
        int               wstop;        /* stop after a file with a warning */

-       enum outt         outtype;      /* which output to use */
-       out_mdoc          outmdoc;      /* mdoc output ptr */
-       out_man           outman;       /* man output ptr */
-       out_free          outfree;      /* free output ptr */
+       enum outt         outtype;      /* which output to use */

        void             *outdata;      /* data for output */
        void             *outdata;      /* data for output */

-       char              outopts[BUFSIZ]; /* buf of output opts */
+       struct manoutput *outopts;      /* output options */

 };
 
 };
 

-static const char * const      mandoclevels[MANDOCLEVEL_MAX] = {
-       "SUCCESS",
-       "RESERVED",
-       "WARNING",
-       "ERROR",
-       "FATAL",
-       "BADARG",
-       "SYSERR"
-};

 
 

-static const char * const      mandocerrs[MANDOCERR_MAX] = {
-       "ok",
-
-       "generic warning",
-
-       /* related to the prologue */
-       "no title in document",
-       "document title should be all caps",
-       "unknown manual section",
-       "date missing, using today's date",
-       "cannot parse date, using it verbatim",
-       "prologue macros out of order",
-       "duplicate prologue macro",
-       "macro not allowed in prologue",
-       "macro not allowed in body",
-
-       /* related to document structure */
-       ".so is fragile, better use ln(1)",
-       "NAME section must come first",
-       "bad NAME section contents",
-       "manual name not yet set",
-       "sections out of conventional order",
-       "duplicate section name",
-       "section not in conventional manual section",
-
-       /* related to macros and nesting */
-       "skipping obsolete macro",
-       "skipping paragraph macro",
-       "skipping no-space macro",
-       "blocks badly nested",
-       "child violates parent syntax",
-       "nested displays are not portable",
-       "already in literal mode",
-
-       /* related to missing macro arguments */
-       "skipping empty macro",
-       "argument count wrong",
-       "missing display type",
-       "list type must come first",
-       "tag lists require a width argument",
-       "missing font type",
-       "skipping end of block that is not open",
-
-       /* related to bad macro arguments */
-       "skipping argument",
-       "duplicate argument",
-       "duplicate display type",
-       "duplicate list type",
-       "unknown AT&T UNIX version",
-       "bad Boolean value",
-       "unknown font",
-       "unknown standard specifier",
-       "bad width argument",
-
-       /* related to plain text */
-       "blank line in non-literal context",
-       "tab in non-literal context",
-       "end of line whitespace",
-       "bad comment style",
-       "unknown escape sequence",
-       "unterminated quoted string",
-       
-       "generic error",
-
-       /* related to tables */
-       "bad table syntax",
-       "bad table option",
-       "bad table layout",
-       "no table layout cells specified",
-       "no table data cells specified",
-       "ignore data in cell",
-       "data block still open",
-       "ignoring extra data cells",
-
-       "input stack limit exceeded, infinite loop?",
-       "skipping bad character",
-       "escaped character not allowed in a name",
-       "skipping text before the first section header",
-       "skipping unknown macro",
-       "NOT IMPLEMENTED, please use groff: skipping request",
-       "line scope broken",
-       "argument count wrong",
-       "skipping end of block that is not open",
-       "missing end of block",
-       "scope open on exit",
-       "uname(3) system call failed",
-       "macro requires line argument(s)",
-       "macro requires body argument(s)",
-       "macro requires argument(s)",
-       "missing list type",
-       "line argument(s) will be lost",
-       "body argument(s) will be lost",
-
-       "generic fatal error",
-
-       "column syntax is inconsistent",
-       "NOT IMPLEMENTED: .Bd -file",
-       "line scope broken, syntax violated",
-       "argument count wrong, violates syntax",
-       "child violates parent syntax",
-       "argument count wrong, violates syntax",
-       "NOT IMPLEMENTED: .so with absolute path or \"..\"",
-       "no document body",
-       "no document prologue",
-       "static buffer exhausted",
-};
+int                      mandocdb(int, char *[]);

 
 

-static int               moptions(enum mparset *, char *);
+static int               fs_lookup(const struct manpaths *,
+                               size_t ipath, const char *,
+                               const char *, const char *,
+                               struct manpage **, size_t *);
+static void              fs_search(const struct mansearch *,
+                               const struct manpaths *, int, char**,
+                               struct manpage **, size_t *);
+static int               koptions(int *, char *);
+static int               moptions(int *, char *);

 static void              mmsg(enum mandocerr, enum mandoclevel,
                                const char *, int, int, const 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 void              outdata_alloc(struct curparse *);
+static void              parse(struct curparse *, int, const char *);
+static void              passthrough(const char *, int, int);
+static pid_t             spawn_pager(struct tag_files *);

 static int               toptions(struct curparse *, char *);
 static int               toptions(struct curparse *, char *);

-static void              usage(void) __attribute__((noreturn));
-static void              version(void) __attribute__((noreturn));
+static void              usage(enum argmode) __attribute__((noreturn));

 static int               woptions(struct curparse *, char *);
 
 static int               woptions(struct curparse *, char *);
 

-static const char       *progname;
+static const int sec_prios[] = {1, 4, 5, 8, 6, 3, 7, 2, 9};
+static char              help_arg[] = "help";
+static char             *help_argv[] = {help_arg, NULL};
+static enum mandoclevel  rc;
+

 
 int
 main(int argc, char *argv[])
 {
 
 int
 main(int argc, char *argv[])
 {

-       int              c;
+       struct manconf   conf;

        struct curparse  curp;
        struct curparse  curp;

-       enum mparset     type;
-       enum mandoclevel rc;
-
-       progname = strrchr(argv[0], '/');
-       if (progname == NULL)
+       struct mansearch search;
+       struct tag_files *tag_files;
+       const char      *progname;
+       char            *auxpaths;
+       char            *defos;
+       unsigned char   *uc;
+       struct manpage  *res, *resp;
+       char            *conf_file, *defpaths;
+       const char      *sec;
+       const char      *thisarg;
+       size_t           i, sz;
+       int              prio, best_prio;
+       enum outmode     outmode;
+       int              fd;
+       int              show_usage;
+       int              options;
+       int              use_pager;
+       int              status, signum;
+       int              c;
+       pid_t            pager_pid, tc_pgid, man_pgid, pid;
+
+#if HAVE_PROGNAME
+       progname = getprogname();
+#else
+       if (argc < 1)
+               progname = mandoc_strdup("mandoc");
+       else if ((progname = strrchr(argv[0], '/')) == NULL)

                progname = argv[0];
        else
                ++progname;
                progname = argv[0];
        else
                ++progname;

+       setprogname(progname);
+#endif

 
 

-       memset(&curp, 0, sizeof(struct curparse));
+       if (strncmp(progname, "mandocdb", 8) == 0 ||
+           strcmp(progname, BINM_MAKEWHATIS) == 0)
+               return mandocdb(argc, argv);
+
+#if HAVE_PLEDGE
+       if (pledge("stdio rpath tmppath tty proc exec flock", NULL) == -1)
+               err((int)MANDOCLEVEL_SYSERR, "pledge");
+#endif
+
+#if HAVE_SANDBOX_INIT
+       if (sandbox_init(kSBXProfileNoInternet, SANDBOX_NAMED, NULL) == -1)
+               errx((int)MANDOCLEVEL_SYSERR, "sandbox_init");
+#endif
+
+       /* Search options. */

 
 

-       type = MPARSE_AUTO;
-       curp.outtype = OUTT_ASCII;
-       curp.wlevel  = MANDOCLEVEL_FATAL;
+       memset(&conf, 0, sizeof(conf));
+       conf_file = defpaths = NULL;
+       auxpaths = NULL;

 
 

-       /* LINTED */
-       while (-1 != (c = getopt(argc, argv, "m:O:T:VW:")))
+       memset(&search, 0, sizeof(struct mansearch));
+       search.outkey = "Nd";
+
+       if (strcmp(progname, BINM_MAN) == 0)
+               search.argmode = ARG_NAME;
+       else if (strcmp(progname, BINM_APROPOS) == 0)
+               search.argmode = ARG_EXPR;
+       else if (strcmp(progname, BINM_WHATIS) == 0)
+               search.argmode = ARG_WORD;
+       else if (strncmp(progname, "help", 4) == 0)
+               search.argmode = ARG_NAME;
+       else
+               search.argmode = ARG_FILE;
+
+       /* Parser and formatter options. */
+
+       memset(&curp, 0, sizeof(struct curparse));
+       curp.outtype = OUTT_LOCALE;
+       curp.wlevel  = MANDOCLEVEL_BADARG;
+       curp.outopts = &conf.output;
+       options = MPARSE_SO | MPARSE_UTF8 | MPARSE_LATIN1;
+       defos = NULL;
+
+       use_pager = 1;
+       tag_files = NULL;
+       show_usage = 0;
+       outmode = OUTMODE_DEF;
+
+       while (-1 != (c = getopt(argc, argv,
+                       "aC:cfhI:iK:klM:m:O:S:s:T:VW:w"))) {

                switch (c) {
                switch (c) {

-               case ('m'):
-                       if ( ! moptions(&type, optarg))
-                               return((int)MANDOCLEVEL_BADARG);
+               case 'a':
+                       outmode = OUTMODE_ALL;
+                       break;
+               case 'C':
+                       conf_file = optarg;
+                       break;
+               case 'c':
+                       use_pager = 0;
+                       break;
+               case 'f':
+                       search.argmode = ARG_WORD;
+                       break;
+               case 'h':
+                       conf.output.synopsisonly = 1;
+                       use_pager = 0;
+                       outmode = OUTMODE_ALL;
+                       break;
+               case 'I':
+                       if (strncmp(optarg, "os=", 3)) {
+                               warnx("-I %s: Bad argument", optarg);
+                               return (int)MANDOCLEVEL_BADARG;
+                       }
+                       if (defos) {
+                               warnx("-I %s: Duplicate argument", optarg);
+                               return (int)MANDOCLEVEL_BADARG;
+                       }
+                       defos = mandoc_strdup(optarg + 3);
+                       break;
+               case 'i':
+                       outmode = OUTMODE_INT;

                        break;
                        break;

-               case ('O'):
-                       (void)strlcat(curp.outopts, optarg, BUFSIZ);
-                       (void)strlcat(curp.outopts, ",", BUFSIZ);
+               case 'K':
+                       if ( ! koptions(&options, optarg))
+                               return (int)MANDOCLEVEL_BADARG;

                        break;
                        break;

-               case ('T'):
+               case 'k':
+                       search.argmode = ARG_EXPR;
+                       break;
+               case 'l':
+                       search.argmode = ARG_FILE;
+                       outmode = OUTMODE_ALL;
+                       break;
+               case 'M':
+                       defpaths = optarg;
+                       break;
+               case 'm':
+                       auxpaths = optarg;
+                       break;
+               case 'O':
+                       search.outkey = optarg;
+                       while (optarg != NULL) {
+                               thisarg = optarg;
+                               if (manconf_output(&conf.output,
+                                   strsep(&optarg, ","), 0) == 0)
+                                       continue;
+                               warnx("-O %s: Bad argument", thisarg);
+                               return (int)MANDOCLEVEL_BADARG;
+                       }
+                       break;
+               case 'S':
+                       search.arch = optarg;
+                       break;
+               case 's':
+                       search.sec = optarg;
+                       break;
+               case 'T':

                        if ( ! toptions(&curp, optarg))
                        if ( ! toptions(&curp, optarg))

-                               return((int)MANDOCLEVEL_BADARG);
+                               return (int)MANDOCLEVEL_BADARG;

                        break;
                        break;

-               case ('W'):
+               case 'W':

                        if ( ! woptions(&curp, optarg))
                        if ( ! woptions(&curp, optarg))

-                               return((int)MANDOCLEVEL_BADARG);
+                               return (int)MANDOCLEVEL_BADARG;
+                       break;
+               case 'w':
+                       outmode = OUTMODE_FLN;

                        break;
                        break;

-               case ('V'):
-                       version();
-                       /* NOTREACHED */

                default:
                default:

-                       usage();
-                       /* NOTREACHED */
+                       show_usage = 1;
+                       break;

                }
                }

+       }

 
 

-       curp.mp = mparse_alloc(type, curp.wlevel, mmsg, &curp);
+       if (show_usage)
+               usage(search.argmode);

 
 

-       argc -= optind;
-       argv += optind;
+       /* Postprocess options. */
+
+       if (outmode == OUTMODE_DEF) {
+               switch (search.argmode) {
+               case ARG_FILE:
+                       outmode = OUTMODE_ALL;
+                       use_pager = 0;
+                       break;
+               case ARG_NAME:
+                       outmode = OUTMODE_ONE;
+                       break;
+               default:
+                       outmode = OUTMODE_LST;
+                       break;
+               }
+       }
+
+       if (outmode == OUTMODE_FLN ||
+           outmode == OUTMODE_LST ||
+           !isatty(STDOUT_FILENO))
+               use_pager = 0;
+
+#if HAVE_PLEDGE
+       if (!use_pager)
+               if (pledge("stdio rpath flock", NULL) == -1)
+                       err((int)MANDOCLEVEL_SYSERR, "pledge");
+#endif
+
+       /* Parse arguments. */
+
+       if (argc > 0) {
+               argc -= optind;
+               argv += optind;
+       }
+       resp = NULL;
+
+       /*
+        * Quirks for help(1)
+        * and for a man(1) section argument without -s.
+        */
+
+       if (search.argmode == ARG_NAME) {
+               if (*progname == 'h') {
+                       if (argc == 0) {
+                               argv = help_argv;
+                               argc = 1;
+                       }
+               } else if (argc > 1 &&
+                   ((uc = (unsigned char *)argv[0]) != NULL) &&
+                   ((isdigit(uc[0]) && (uc[1] == '\0' ||
+                     (isalpha(uc[1]) && uc[2] == '\0'))) ||
+                    (uc[0] == 'n' && uc[1] == '\0'))) {
+                       search.sec = (char *)uc;
+                       argv++;
+                       argc--;
+               }
+               if (search.arch == NULL)
+                       search.arch = getenv("MACHINE");
+#ifdef MACHINE
+               if (search.arch == NULL)
+                       search.arch = MACHINE;
+#endif
+       }

 
        rc = MANDOCLEVEL_OK;
 
 
        rc = MANDOCLEVEL_OK;
 

-       if (NULL == *argv)
-               parse(&curp, STDIN_FILENO, "<stdin>", &rc);
+       /* man(1), whatis(1), apropos(1) */
+
+       if (search.argmode != ARG_FILE) {
+               if (search.argmode == ARG_NAME &&
+                   outmode == OUTMODE_ONE)
+                       search.firstmatch = 1;
+
+               /* Access the mandoc database. */
+
+               manconf_parse(&conf, conf_file, defpaths, auxpaths);
+               if ( ! mansearch(&search, &conf.manpath,
+                   argc, argv, &res, &sz))
+                       usage(search.argmode);
+
+               if (sz == 0) {
+                       if (search.argmode == ARG_NAME)
+                               fs_search(&search, &conf.manpath,
+                                   argc, argv, &res, &sz);
+                       else
+                               warnx("nothing appropriate");
+               }
+
+               if (sz == 0) {
+                       rc = MANDOCLEVEL_BADARG;
+                       goto out;
+               }
+
+               /*
+                * For standard man(1) and -a output mode,
+                * prepare for copying filename pointers
+                * into the program parameter array.
+                */
+
+               if (outmode == OUTMODE_ONE) {
+                       argc = 1;
+                       best_prio = 20;
+               } else if (outmode == OUTMODE_ALL)
+                       argc = (int)sz;
+
+               /* Iterate all matching manuals. */
+
+               resp = res;
+               for (i = 0; i < sz; i++) {
+                       if (outmode == OUTMODE_FLN)
+                               puts(res[i].file);
+                       else if (outmode == OUTMODE_LST)
+                               printf("%s - %s\n", res[i].names,
+                                   res[i].output == NULL ? "" :
+                                   res[i].output);
+                       else if (outmode == OUTMODE_ONE) {
+                               /* Search for the best section. */
+                               sec = res[i].file;
+                               sec += strcspn(sec, "123456789");
+                               if (sec[0] == '\0')
+                                       continue;
+                               prio = sec_prios[sec[0] - '1'];
+                               if (sec[1] != '/')
+                                       prio += 10;
+                               if (prio >= best_prio)
+                                       continue;
+                               best_prio = prio;
+                               resp = res + i;
+                       }
+               }
+
+               /*
+                * For man(1), -a and -i output mode, fall through
+                * to the main mandoc(1) code iterating files
+                * and running the parsers on each of them.
+                */
+
+               if (outmode == OUTMODE_FLN || outmode == OUTMODE_LST)
+                       goto out;
+       }
+
+       /* mandoc(1) */
+
+#if HAVE_PLEDGE
+       if (use_pager) {
+               if (pledge("stdio rpath tmppath tty proc exec", NULL) == -1)
+                       err((int)MANDOCLEVEL_SYSERR, "pledge");
+       } else {
+               if (pledge("stdio rpath", NULL) == -1)
+                       err((int)MANDOCLEVEL_SYSERR, "pledge");
+       }
+#endif
+
+       if (search.argmode == ARG_FILE && ! moptions(&options, auxpaths))
+               return (int)MANDOCLEVEL_BADARG;
+
+       mchars_alloc();
+       curp.mp = mparse_alloc(options, curp.wlevel, mmsg, defos);
+
+       /*
+        * Conditionally start up the lookaside buffer before parsing.
+        */
+       if (OUTT_MAN == curp.outtype)
+               mparse_keep(curp.mp);
+
+       if (argc < 1) {
+               if (use_pager)
+                       tag_files = tag_init();
+               parse(&curp, STDIN_FILENO, "<stdin>");
+       }
+
+       while (argc > 0) {
+               fd = mparse_open(curp.mp, resp != NULL ? resp->file : *argv);
+               if (fd != -1) {
+                       if (use_pager) {
+                               tag_files = tag_init();
+                               use_pager = 0;
+                       }
+
+                       if (resp == NULL)
+                               parse(&curp, fd, *argv);
+                       else if (resp->form == FORM_SRC) {
+                               /* For .so only; ignore failure. */
+                               chdir(conf.manpath.paths[resp->ipath]);
+                               parse(&curp, fd, resp->file);
+                       } else
+                               passthrough(resp->file, fd,
+                                   conf.output.synopsisonly);
+
+                       if (argc > 1 && curp.outtype <= OUTT_UTF8) {
+                               if (curp.outdata == NULL)
+                                       outdata_alloc(&curp);
+                               terminal_sepline(curp.outdata);
+                       }
+               } else if (rc < MANDOCLEVEL_ERROR)
+                       rc = MANDOCLEVEL_ERROR;

 
 

-       while (*argv) {
-               parse(&curp, -1, *argv, &rc);

                if (MANDOCLEVEL_OK != rc && curp.wstop)
                        break;
                if (MANDOCLEVEL_OK != rc && curp.wstop)
                        break;

-               ++argv;
+
+               if (resp != NULL)
+                       resp++;
+               else
+                       argv++;
+               if (--argc)
+                       mparse_reset(curp.mp);
+       }
+
+       if (curp.outdata != NULL) {
+               switch (curp.outtype) {
+               case OUTT_HTML:
+                       html_free(curp.outdata);
+                       break;
+               case OUTT_UTF8:
+               case OUTT_LOCALE:
+               case OUTT_ASCII:
+                       ascii_free(curp.outdata);
+                       break;
+               case OUTT_PDF:
+               case OUTT_PS:
+                       pspdf_free(curp.outdata);
+                       break;
+               default:
+                       break;
+               }
+       }
+       mparse_free(curp.mp);
+       mchars_free();
+
+out:
+       if (search.argmode != ARG_FILE) {
+               manconf_free(&conf);
+               mansearch_free(res, sz);

        }
 
        }
 

-       if (curp.outfree)
-               (*curp.outfree)(curp.outdata);
-       if (curp.mp)
-               mparse_free(curp.mp);
+       free(defos);

 
 

-       return((int)rc);
+       /*
+        * When using a pager, finish writing both temporary files,
+        * fork it, wait for the user to close it, and clean up.
+        */
+
+       if (tag_files != NULL) {
+               fclose(stdout);
+               tag_write();
+               man_pgid = getpgid(0);
+               tag_files->tcpgid = man_pgid == getpid() ?
+                   getpgid(getppid()) : man_pgid;
+               pager_pid = 0;
+               signum = SIGSTOP;
+               for (;;) {
+
+                       /* Stop here until moved to the foreground. */
+
+                       tc_pgid = tcgetpgrp(tag_files->ofd);
+                       if (tc_pgid != man_pgid) {
+                               if (tc_pgid == pager_pid) {
+                                       (void)tcsetpgrp(tag_files->ofd,
+                                           man_pgid);
+                                       if (signum == SIGTTIN)
+                                               continue;
+                               } else
+                                       tag_files->tcpgid = tc_pgid;
+                               kill(0, signum);
+                               continue;
+                       }
+
+                       /* Once in the foreground, activate the pager. */
+
+                       if (pager_pid) {
+                               (void)tcsetpgrp(tag_files->ofd, pager_pid);
+                               kill(pager_pid, SIGCONT);
+                       } else
+                               pager_pid = spawn_pager(tag_files);
+
+                       /* Wait for the pager to stop or exit. */
+
+                       while ((pid = waitpid(pager_pid, &status,
+                           WUNTRACED)) == -1 && errno == EINTR)
+                               continue;
+
+                       if (pid == -1) {
+                               warn("wait");
+                               rc = MANDOCLEVEL_SYSERR;
+                               break;
+                       }
+                       if (!WIFSTOPPED(status))
+                               break;
+
+                       signum = WSTOPSIG(status);
+               }
+               tag_unlink();
+       }
+
+       return (int)rc;

 }
 
 static void
 }
 
 static void

-version(void)
+usage(enum argmode argmode)

 {
 
 {
 

-       printf("%s %s\n", progname, VERSION);
-       exit((int)MANDOCLEVEL_OK);
+       switch (argmode) {
+       case ARG_FILE:
+               fputs("usage: mandoc [-acfhkl] [-I os=name] "
+                   "[-K encoding] [-mformat] [-O option]\n"
+                   "\t      [-T output] [-W level] [file ...]\n", stderr);
+               break;
+       case ARG_NAME:
+               fputs("usage: man [-acfhklw] [-C file] [-I os=name] "
+                   "[-K encoding] [-M path] [-m path]\n"
+                   "\t   [-O option=value] [-S subsection] [-s section] "
+                   "[-T output] [-W level]\n"
+                   "\t   [section] name ...\n", stderr);
+               break;
+       case ARG_WORD:
+               fputs("usage: whatis [-acfhklw] [-C file] "
+                   "[-M path] [-m path] [-O outkey] [-S arch]\n"
+                   "\t      [-s section] name ...\n", stderr);
+               break;
+       case ARG_EXPR:
+               fputs("usage: apropos [-acfhklw] [-C file] "
+                   "[-M path] [-m path] [-O outkey] [-S arch]\n"
+                   "\t       [-s section] expression ...\n", stderr);
+               break;
+       }
+       exit((int)MANDOCLEVEL_BADARG);

 }
 
 }
 

-static void
-usage(void)
+static int
+fs_lookup(const struct manpaths *paths, size_t ipath,
+       const char *sec, const char *arch, const char *name,
+       struct manpage **res, size_t *ressz)

 {
 {

+       glob_t           globinfo;
+       struct manpage  *page;
+       char            *file;
+       int              globres;
+       enum form        form;
+
+       form = FORM_SRC;
+       mandoc_asprintf(&file, "%s/man%s/%s.%s",
+           paths->paths[ipath], sec, name, sec);
+       if (access(file, R_OK) != -1)
+               goto found;
+       free(file);
+
+       mandoc_asprintf(&file, "%s/cat%s/%s.0",
+           paths->paths[ipath], sec, name);
+       if (access(file, R_OK) != -1) {
+               form = FORM_CAT;
+               goto found;
+       }
+       free(file);
+
+       if (arch != NULL) {
+               mandoc_asprintf(&file, "%s/man%s/%s/%s.%s",
+                   paths->paths[ipath], sec, arch, name, sec);
+               if (access(file, R_OK) != -1)
+                       goto found;
+               free(file);
+       }

 
 

-       fprintf(stderr, "usage: %s "
-                       "[-V] "
-                       "[-foption] "
-                       "[-mformat] "
-                       "[-Ooption] "
-                       "[-Toutput] "
-                       "[-Werr] "
-                       "[file...]\n", 
-                       progname);
+       mandoc_asprintf(&file, "%s/man%s/%s.[01-9]*",
+           paths->paths[ipath], sec, name);
+       globres = glob(file, 0, NULL, &globinfo);
+       if (globres != 0 && globres != GLOB_NOMATCH)
+               warn("%s: glob", file);
+       free(file);
+       if (globres == 0)
+               file = mandoc_strdup(*globinfo.gl_pathv);
+       globfree(&globinfo);
+       if (globres != 0)
+               return 0;
+
+found:
+       warnx("outdated mandoc.db lacks %s(%s) entry, run %s %s",
+           name, sec, BINM_MAKEWHATIS, paths->paths[ipath]);
+       *res = mandoc_reallocarray(*res, ++*ressz, sizeof(struct manpage));
+       page = *res + (*ressz - 1);
+       page->file = file;
+       page->names = NULL;
+       page->output = NULL;
+       page->ipath = ipath;
+       page->bits = NAME_FILE & NAME_MASK;
+       page->sec = (*sec >= '1' && *sec <= '9') ? *sec - '1' + 1 : 10;
+       page->form = form;
+       return 1;
+}

 
 

-       exit((int)MANDOCLEVEL_BADARG);
+static void
+fs_search(const struct mansearch *cfg, const struct manpaths *paths,
+       int argc, char **argv, struct manpage **res, size_t *ressz)
+{
+       const char *const sections[] =
+           {"1", "8", "6", "2", "3", "5", "7", "4", "9", "3p"};
+       const size_t nsec = sizeof(sections)/sizeof(sections[0]);
+
+       size_t           ipath, isec, lastsz;
+
+       assert(cfg->argmode == ARG_NAME);
+
+       *res = NULL;
+       *ressz = lastsz = 0;
+       while (argc) {
+               for (ipath = 0; ipath < paths->sz; ipath++) {
+                       if (cfg->sec != NULL) {
+                               if (fs_lookup(paths, ipath, cfg->sec,
+                                   cfg->arch, *argv, res, ressz) &&
+                                   cfg->firstmatch)
+                                       return;
+                       } else for (isec = 0; isec < nsec; isec++)
+                               if (fs_lookup(paths, ipath, sections[isec],
+                                   cfg->arch, *argv, res, ressz) &&
+                                   cfg->firstmatch)
+                                       return;
+               }
+               if (*ressz == lastsz)
+                       warnx("No entry for %s in the manual.", *argv);
+               lastsz = *ressz;
+               argv++;
+               argc--;
+       }

 }
 
 static void
 }
 
 static void

-parse(struct curparse *curp, int fd, 
-               const char *file, enum mandoclevel *level)
+parse(struct curparse *curp, int fd, const char *file)

 {
 {

-       enum mandoclevel  rc;
-       struct mdoc      *mdoc;
-       struct man       *man;
+       enum mandoclevel  rctmp;
+       struct roff_man  *man;

 
        /* Begin by parsing the file itself. */
 
        assert(file);
 
        /* Begin by parsing the file itself. */
 
        assert(file);

-       assert(fd >= -1);
-
-       rc = mparse_readfd(curp->mp, fd, file);
-
-       /* Stop immediately if the parse has failed. */
+       assert(fd >= 0);

 
 

-       if (MANDOCLEVEL_FATAL <= rc)
-               goto cleanup;
+       rctmp = mparse_readfd(curp->mp, fd, file);
+       if (fd != STDIN_FILENO)
+               close(fd);
+       if (rc < rctmp)
+               rc = rctmp;

 
        /*
         * With -Wstop and warnings or errors of at least the requested
         * level, do not produce output.
         */
 
 
        /*
         * With -Wstop and warnings or errors of at least the requested
         * level, do not produce output.
         */
 

-       if (MANDOCLEVEL_OK != rc && curp->wstop)
-               goto cleanup;
+       if (rctmp != MANDOCLEVEL_OK && curp->wstop)
+               return;
+
+       if (curp->outdata == NULL)
+               outdata_alloc(curp);
+
+       mparse_result(curp->mp, &man, NULL);

 
 

-       /* If unset, allocate output dev now (if applicable). */
+       /* Execute the out device, if it exists. */

 
 

-       if ( ! (curp->outman && curp->outmdoc)) {
+       if (man == NULL)
+               return;
+       if (man->macroset == MACROSET_MDOC) {
+               mdoc_validate(man);

                switch (curp->outtype) {
                switch (curp->outtype) {

-               case (OUTT_XHTML):
-                       curp->outdata = xhtml_alloc(curp->outopts);
-                       break;
-               case (OUTT_HTML):
-                       curp->outdata = html_alloc(curp->outopts);
+               case OUTT_HTML:
+                       html_mdoc(curp->outdata, man);

                        break;
                        break;

-               case (OUTT_ASCII):
-                       curp->outdata = ascii_alloc(curp->outopts);
-                       curp->outfree = ascii_free;
+               case OUTT_TREE:
+                       tree_mdoc(curp->outdata, man);

                        break;
                        break;

-               case (OUTT_PDF):
-                       curp->outdata = pdf_alloc(curp->outopts);
-                       curp->outfree = pspdf_free;
+               case OUTT_MAN:
+                       man_mdoc(curp->outdata, man);

                        break;
                        break;

-               case (OUTT_PS):
-                       curp->outdata = ps_alloc(curp->outopts);
-                       curp->outfree = pspdf_free;
+               case OUTT_PDF:
+               case OUTT_ASCII:
+               case OUTT_UTF8:
+               case OUTT_LOCALE:
+               case OUTT_PS:
+                       terminal_mdoc(curp->outdata, man);

                        break;
                default:
                        break;
                }
                        break;
                default:
                        break;
                }

-
+       }
+       if (man->macroset == MACROSET_MAN) {
+               man_validate(man);

                switch (curp->outtype) {
                switch (curp->outtype) {

-               case (OUTT_HTML):
-                       /* FALLTHROUGH */
-               case (OUTT_XHTML):
-                       curp->outman = html_man;
-                       curp->outmdoc = html_mdoc;
-                       curp->outfree = html_free;
-                       break;
-               case (OUTT_TREE):
-                       curp->outman = tree_man;
-                       curp->outmdoc = tree_mdoc;
-                       break;
-               case (OUTT_PDF):
-                       /* FALLTHROUGH */
-               case (OUTT_ASCII):
-                       /* FALLTHROUGH */
-               case (OUTT_PS):
-                       curp->outman = terminal_man;
-                       curp->outmdoc = terminal_mdoc;
+               case OUTT_HTML:
+                       html_man(curp->outdata, man);
+                       break;
+               case OUTT_TREE:
+                       tree_man(curp->outdata, man);
+                       break;
+               case OUTT_MAN:
+                       man_man(curp->outdata, man);
+                       break;
+               case OUTT_PDF:
+               case OUTT_ASCII:
+               case OUTT_UTF8:
+               case OUTT_LOCALE:
+               case OUTT_PS:
+                       terminal_man(curp->outdata, man);

                        break;
                default:
                        break;
                }
        }
                        break;
                default:
                        break;
                }
        }

+       mparse_updaterc(curp->mp, &rc);
+}

 
 

-       mparse_result(curp->mp, &mdoc, &man);
+static void
+outdata_alloc(struct curparse *curp)
+{
+       switch (curp->outtype) {
+       case OUTT_HTML:
+               curp->outdata = html_alloc(curp->outopts);
+               break;
+       case OUTT_UTF8:
+               curp->outdata = utf8_alloc(curp->outopts);
+               break;
+       case OUTT_LOCALE:
+               curp->outdata = locale_alloc(curp->outopts);
+               break;
+       case OUTT_ASCII:
+               curp->outdata = ascii_alloc(curp->outopts);
+               break;
+       case OUTT_PDF:
+               curp->outdata = pdf_alloc(curp->outopts);
+               break;
+       case OUTT_PS:
+               curp->outdata = ps_alloc(curp->outopts);
+               break;
+       default:
+               break;
+       }
+}

 
 

-       /* Execute the out device, if it exists. */
+static void
+passthrough(const char *file, int fd, int synopsis_only)
+{
+       const char       synb[] = "S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS";
+       const char       synr[] = "SYNOPSIS";
+
+       FILE            *stream;
+       const char      *syscall;
+       char            *line, *cp;
+       size_t           linesz;
+       ssize_t          len, written;
+       int              print;
+
+       line = NULL;
+       linesz = 0;
+
+       if (fflush(stdout) == EOF) {
+               syscall = "fflush";
+               goto fail;
+       }
+
+       if ((stream = fdopen(fd, "r")) == NULL) {
+               close(fd);
+               syscall = "fdopen";
+               goto fail;
+       }
+
+       print = 0;
+       while ((len = getline(&line, &linesz, stream)) != -1) {
+               cp = line;
+               if (synopsis_only) {
+                       if (print) {
+                               if ( ! isspace((unsigned char)*cp))
+                                       goto done;
+                               while (isspace((unsigned char)*cp)) {
+                                       cp++;
+                                       len--;
+                               }
+                       } else {
+                               if (strcmp(cp, synb) == 0 ||
+                                   strcmp(cp, synr) == 0)
+                                       print = 1;
+                               continue;
+                       }
+               }
+               for (; len > 0; len -= written) {
+                       if ((written = write(STDOUT_FILENO, cp, len)) != -1)
+                               continue;
+                       fclose(stream);
+                       syscall = "write";
+                       goto fail;
+               }
+       }

 
 

-       if (man && curp->outman)
-               (*curp->outman)(curp->outdata, man);
-       if (mdoc && curp->outmdoc)
-               (*curp->outmdoc)(curp->outdata, mdoc);
+       if (ferror(stream)) {
+               fclose(stream);
+               syscall = "getline";
+               goto fail;
+       }
+
+done:
+       free(line);
+       fclose(stream);
+       return;

 
 

- cleanup:
+fail:
+       free(line);
+       warn("%s: SYSERR: %s", file, syscall);
+       if (rc < MANDOCLEVEL_SYSERR)
+               rc = MANDOCLEVEL_SYSERR;
+}

 
 

-       mparse_reset(curp->mp);
+static int
+koptions(int *options, char *arg)
+{

 
 

-       if (*level < rc)
-               *level = rc;
+       if ( ! strcmp(arg, "utf-8")) {
+               *options |=  MPARSE_UTF8;
+               *options &= ~MPARSE_LATIN1;
+       } else if ( ! strcmp(arg, "iso-8859-1")) {
+               *options |=  MPARSE_LATIN1;
+               *options &= ~MPARSE_UTF8;
+       } else if ( ! strcmp(arg, "us-ascii")) {
+               *options &= ~(MPARSE_UTF8 | MPARSE_LATIN1);
+       } else {
+               warnx("-K %s: Bad argument", arg);
+               return 0;
+       }
+       return 1;

 }
 
 static int
 }
 
 static int

-moptions(enum mparset *tflags, char *arg)
+moptions(int *options, char *arg)

 {
 
 {
 

-       if (0 == strcmp(arg, "doc"))
-               *tflags = MPARSE_MDOC;
+       if (arg == NULL)
+               /* nothing to do */;
+       else if (0 == strcmp(arg, "doc"))
+               *options |= MPARSE_MDOC;

        else if (0 == strcmp(arg, "andoc"))
        else if (0 == strcmp(arg, "andoc"))

-               *tflags = MPARSE_AUTO;
+               /* nothing to do */;

        else if (0 == strcmp(arg, "an"))
        else if (0 == strcmp(arg, "an"))

-               *tflags = MPARSE_MAN;
+               *options |= MPARSE_MAN;

        else {
        else {

-               fprintf(stderr, "%s: Bad argument\n", arg);
-               return(0);
+               warnx("-m %s: Bad argument", arg);
+               return 0;

        }
 
        }
 

-       return(1);
+       return 1;

 }
 
 static int
 }
 
 static int


@@ -414,72 +939,170 @@ toptions(struct curparse *curp, char *arg)
                curp->wlevel  = MANDOCLEVEL_WARNING;
        } else if (0 == strcmp(arg, "tree"))
                curp->outtype = OUTT_TREE;
                curp->wlevel  = MANDOCLEVEL_WARNING;
        } else if (0 == strcmp(arg, "tree"))
                curp->outtype = OUTT_TREE;

+       else if (0 == strcmp(arg, "man"))
+               curp->outtype = OUTT_MAN;

        else if (0 == strcmp(arg, "html"))
                curp->outtype = OUTT_HTML;
        else if (0 == strcmp(arg, "html"))
                curp->outtype = OUTT_HTML;

+       else if (0 == strcmp(arg, "utf8"))
+               curp->outtype = OUTT_UTF8;
+       else if (0 == strcmp(arg, "locale"))
+               curp->outtype = OUTT_LOCALE;

        else if (0 == strcmp(arg, "xhtml"))
        else if (0 == strcmp(arg, "xhtml"))

-               curp->outtype = OUTT_XHTML;
+               curp->outtype = OUTT_HTML;

        else if (0 == strcmp(arg, "ps"))
                curp->outtype = OUTT_PS;
        else if (0 == strcmp(arg, "pdf"))
                curp->outtype = OUTT_PDF;
        else {
        else if (0 == strcmp(arg, "ps"))
                curp->outtype = OUTT_PS;
        else if (0 == strcmp(arg, "pdf"))
                curp->outtype = OUTT_PDF;
        else {

-               fprintf(stderr, "%s: Bad argument\n", arg);
-               return(0);
+               warnx("-T %s: Bad argument", arg);
+               return 0;

        }
 
        }
 

-       return(1);
+       return 1;

 }
 
 static int
 woptions(struct curparse *curp, char *arg)
 {
        char            *v, *o;
 }
 
 static int
 woptions(struct curparse *curp, char *arg)
 {
        char            *v, *o;

-       const char      *toks[6]; 
+       const char      *toks[7];

 
        toks[0] = "stop";
        toks[1] = "all";
        toks[2] = "warning";
        toks[3] = "error";
 
        toks[0] = "stop";
        toks[1] = "all";
        toks[2] = "warning";
        toks[3] = "error";

-       toks[4] = "fatal";
-       toks[5] = NULL;
+       toks[4] = "unsupp";
+       toks[5] = "fatal";
+       toks[6] = NULL;

 
        while (*arg) {
                o = arg;
 
        while (*arg) {
                o = arg;

-               switch (getsubopt(&arg, UNCONST(toks), &v)) {
-               case (0):
+               switch (getsubopt(&arg, (char * const *)toks, &v)) {
+               case 0:

                        curp->wstop = 1;
                        break;
                        curp->wstop = 1;
                        break;

-               case (1):
-                       /* FALLTHROUGH */
-               case (2):
+               case 1:
+               case 2:

                        curp->wlevel = MANDOCLEVEL_WARNING;
                        break;
                        curp->wlevel = MANDOCLEVEL_WARNING;
                        break;

-               case (3):
+               case 3:

                        curp->wlevel = MANDOCLEVEL_ERROR;
                        break;
                        curp->wlevel = MANDOCLEVEL_ERROR;
                        break;

-               case (4):
-                       curp->wlevel = MANDOCLEVEL_FATAL;
+               case 4:
+                       curp->wlevel = MANDOCLEVEL_UNSUPP;
+                       break;
+               case 5:
+                       curp->wlevel = MANDOCLEVEL_BADARG;

                        break;
                default:
                        break;
                default:

-                       fprintf(stderr, "-W%s: Bad argument\n", o);
-                       return(0);
+                       warnx("-W %s: Bad argument", o);
+                       return 0;

                }
        }
 
                }
        }
 

-       return(1);
+       return 1;

 }
 
 static void
 }
 
 static void

-mmsg(enum mandocerr t, enum mandoclevel lvl, 
+mmsg(enum mandocerr t, enum mandoclevel lvl,

                const char *file, int line, int col, const char *msg)
 {
                const char *file, int line, int col, const char *msg)
 {

+       const char      *mparse_msg;
+
+       fprintf(stderr, "%s: %s:", getprogname(),
+           file == NULL ? "<stdin>" : file);
+
+       if (line)
+               fprintf(stderr, "%d:%d:", line, col + 1);
+
+       fprintf(stderr, " %s", mparse_strlevel(lvl));

 
 

-       fprintf(stderr, "%s:%d:%d: %s: %s", 
-                       file, line, col + 1, 
-                       mandoclevels[lvl], mandocerrs[t]);
+       if (NULL != (mparse_msg = mparse_strerror(t)))
+               fprintf(stderr, ": %s", mparse_msg);

 
        if (msg)
                fprintf(stderr, ": %s", msg);
 
        fputc('\n', stderr);
 }
 
        if (msg)
                fprintf(stderr, ": %s", msg);
 
        fputc('\n', stderr);
 }

+
+static pid_t
+spawn_pager(struct tag_files *tag_files)
+{
+       const struct timespec timeout = { 0, 100000000 };  /* 0.1s */
+#define MAX_PAGER_ARGS 16
+       char            *argv[MAX_PAGER_ARGS];
+       const char      *pager;
+       char            *cp;
+       size_t           cmdlen;
+       int              argc;
+       pid_t            pager_pid;
+
+       pager = getenv("MANPAGER");
+       if (pager == NULL || *pager == '\0')
+               pager = getenv("PAGER");
+       if (pager == NULL || *pager == '\0')
+               pager = "more -s";
+       cp = mandoc_strdup(pager);
+
+       /*
+        * Parse the pager command into words.
+        * Intentionally do not do anything fancy here.
+        */
+
+       argc = 0;
+       while (argc + 4 < MAX_PAGER_ARGS) {
+               argv[argc++] = cp;
+               cp = strchr(cp, ' ');
+               if (cp == NULL)
+                       break;
+               *cp++ = '\0';
+               while (*cp == ' ')
+                       cp++;
+               if (*cp == '\0')
+                       break;
+       }
+
+       /* For less(1), use the tag file. */
+
+       if ((cmdlen = strlen(argv[0])) >= 4) {
+               cp = argv[0] + cmdlen - 4;
+               if (strcmp(cp, "less") == 0) {
+                       argv[argc++] = mandoc_strdup("-T");
+                       argv[argc++] = tag_files->tfn;
+               }
+       }
+       argv[argc++] = tag_files->ofn;
+       argv[argc] = NULL;
+
+       switch (pager_pid = fork()) {
+       case -1:
+               err((int)MANDOCLEVEL_SYSERR, "fork");
+       case 0:
+               break;
+       default:
+               (void)setpgid(pager_pid, 0);
+               (void)tcsetpgrp(tag_files->ofd, pager_pid);
+#if HAVE_PLEDGE
+               if (pledge("stdio rpath tmppath tty proc", NULL) == -1)
+                       err((int)MANDOCLEVEL_SYSERR, "pledge");
+#endif
+               tag_files->pager_pid = pager_pid;
+               return pager_pid;
+       }
+
+       /* The child process becomes the pager. */
+
+       if (dup2(tag_files->ofd, STDOUT_FILENO) == -1)
+               err((int)MANDOCLEVEL_SYSERR, "pager stdout");
+       close(tag_files->ofd);
+       close(tag_files->tfd);
+
+       /* Do not start the pager before controlling the terminal. */
+
+       while (tcgetpgrp(STDOUT_FILENO) != getpid())
+               nanosleep(&timeout, NULL);
+
+       execvp(argv[0], argv);
+       err((int)MANDOCLEVEL_SYSERR, "exec %s", argv[0]);
+}