]> git.cameronkatri.com Git - mandoc.git/blobdiff - main.c
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[mandoc.git] / main.c
diff --git a/main.c b/main.c
index 79a2ddd6fd1dd534c9bbfe563c6fc1288299c844..eb056230c4c64fff51a1d13fea84de04b6d56d3d 100644 (file)
--- a/main.c
+++ b/main.c
@@ -1,16 +1,16 @@
-/*     $Id: main.c,v 1.195 2014/10/28 17:36:19 schwarze Exp $ */
+/*     $Id: main.c,v 1.265 2016/04/14 20:55:48 schwarze Exp $ */
 /*
  * Copyright (c) 2008-2012 Kristaps Dzonsons <kristaps@bsd.lv>
- * Copyright (c) 2010, 2011, 2012, 2014 Ingo Schwarze <schwarze@openbsd.org>
+ * Copyright (c) 2010-2012, 2014-2016 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.
  *
- * 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
- * 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
 #include "config.h"
 
 #include <sys/types.h>
+#include <sys/param.h> /* MACHINE */
+#include <sys/wait.h>
 
 #include <assert.h>
 #include <ctype.h>
+#if HAVE_ERR
+#include <err.h>
+#endif
 #include <errno.h>
 #include <fcntl.h>
+#include <glob.h>
+#include <signal.h>
 #include <stdio.h>
 #include <stdint.h>
 #include <stdlib.h>
 #include <string.h>
+#include <time.h>
 #include <unistd.h>
 
-#include "mandoc.h"
 #include "mandoc_aux.h"
-#include "main.h"
+#include "mandoc.h"
+#include "roff.h"
 #include "mdoc.h"
 #include "man.h"
-#include "manpath.h"
+#include "tag.h"
+#include "main.h"
+#include "manconf.h"
 #include "mansearch.h"
 
 #if !defined(__GNUC__) || (__GNUC__ < 2)
@@ -53,10 +63,6 @@ enum outmode {
        OUTMODE_ONE
 };
 
-typedef        void            (*out_mdoc)(void *, const struct mdoc *);
-typedef        void            (*out_man)(void *, const struct man *);
-typedef        void            (*out_free)(void *);
-
 enum   outt {
        OUTT_ASCII = 0, /* -Tascii */
        OUTT_LOCALE,    /* -Tlocale */
@@ -71,89 +77,119 @@ enum       outt {
 
 struct curparse {
        struct mparse    *mp;
-       struct mchars    *mchars;       /* character table */
        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 */
        void             *outdata;      /* data for output */
-       char              outopts[BUFSIZ]; /* buf of output opts */
+       struct manoutput *outopts;      /* output options */
 };
 
+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 *);
+#if HAVE_SQLITE3
+int                      mandocdb(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 enum mandoclevel  passthrough(const char *, int);
-static void              spawn_pager(void);
+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 void              usage(enum argmode) __attribute__((noreturn));
-static void              version(void) __attribute__((noreturn));
 static int               woptions(struct curparse *, char *);
 
 static const int sec_prios[] = {1, 4, 5, 8, 6, 3, 7, 2, 9};
-static const char       *progname;
+static char              help_arg[] = "help";
+static char             *help_argv[] = {help_arg, NULL};
+static enum mandoclevel  rc;
 
 
 int
 main(int argc, char *argv[])
 {
+       struct manconf   conf;
        struct curparse  curp;
        struct mansearch search;
-       struct manpaths  paths;
-       char            *conf_file, *defpaths, *auxpaths;
+       struct tag_files *tag_files;
+       const char      *progname;
+       char            *auxpaths;
        char            *defos;
-#if HAVE_SQLITE3
+       unsigned char   *uc;
        struct manpage  *res, *resp;
-       size_t           isec, i, sz;
+       char            *conf_file, *defpaths;
+       const char      *sec;
+       size_t           i, sz;
        int              prio, best_prio;
-       char             sec;
-#endif
-       enum mandoclevel rc;
        enum outmode     outmode;
-       pid_t            child_pid;
        int              fd;
        int              show_usage;
-       int              use_pager;
        int              options;
+       int              use_pager;
+       int              status, signum;
        int              c;
+       pid_t            pager_pid, tc_pgid, man_pgid, pid;
 
-       progname = strrchr(argv[0], '/');
-       if (progname == NULL)
+#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;
+       setprogname(progname);
+#endif
+
+#if HAVE_SQLITE3
+       if (strncmp(progname, "mandocdb", 8) == 0 ||
+           strcmp(progname, BINM_MAKEWHATIS) == 0)
+               return mandocdb(argc, argv);
+#endif
+
+#if HAVE_PLEDGE
+       if (pledge("stdio rpath tmppath tty proc exec flock", NULL) == -1)
+               err((int)MANDOCLEVEL_SYSERR, "pledge");
+#endif
 
        /* Search options. */
 
-       memset(&paths, 0, sizeof(struct manpaths));
-       conf_file = defpaths = auxpaths = NULL;
+       memset(&conf, 0, sizeof(conf));
+       conf_file = defpaths = NULL;
+       auxpaths = NULL;
 
        memset(&search, 0, sizeof(struct mansearch));
        search.outkey = "Nd";
 
-       if (strcmp(progname, "man") == 0)
+       if (strcmp(progname, BINM_MAN) == 0)
                search.argmode = ARG_NAME;
-       else if (strncmp(progname, "apropos", 7) == 0)
+       else if (strcmp(progname, BINM_APROPOS) == 0)
                search.argmode = ARG_EXPR;
-       else if (strncmp(progname, "whatis", 6) == 0)
+       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_ASCII;
-       curp.wlevel  = MANDOCLEVEL_FATAL;
+       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;
 
@@ -173,21 +209,18 @@ main(int argc, char *argv[])
                        search.argmode = ARG_WORD;
                        break;
                case 'h':
-                       (void)strlcat(curp.outopts, "synopsis,", BUFSIZ);
+                       conf.output.synopsisonly = 1;
+                       use_pager = 0;
                        outmode = OUTMODE_ALL;
                        break;
                case 'I':
                        if (strncmp(optarg, "os=", 3)) {
-                               fprintf(stderr,
-                                   "%s: -I%s: Bad argument\n",
-                                   progname, optarg);
-                               return((int)MANDOCLEVEL_BADARG);
+                               warnx("-I %s: Bad argument", optarg);
+                               return (int)MANDOCLEVEL_BADARG;
                        }
                        if (defos) {
-                               fprintf(stderr,
-                                   "%s: -I%s: Duplicate argument\n",
-                                   progname, optarg);
-                               return((int)MANDOCLEVEL_BADARG);
+                               warnx("-I %s: Duplicate argument", optarg);
+                               return (int)MANDOCLEVEL_BADARG;
                        }
                        defos = mandoc_strdup(optarg + 3);
                        break;
@@ -196,7 +229,7 @@ main(int argc, char *argv[])
                        break;
                case 'K':
                        if ( ! koptions(&options, optarg))
-                               return((int)MANDOCLEVEL_BADARG);
+                               return (int)MANDOCLEVEL_BADARG;
                        break;
                case 'k':
                        search.argmode = ARG_EXPR;
@@ -213,8 +246,9 @@ main(int argc, char *argv[])
                        break;
                case 'O':
                        search.outkey = optarg;
-                       (void)strlcat(curp.outopts, optarg, BUFSIZ);
-                       (void)strlcat(curp.outopts, ",", BUFSIZ);
+                       while (optarg != NULL)
+                               manconf_output(&conf.output,
+                                   strsep(&optarg, ","));
                        break;
                case 'S':
                        search.arch = optarg;
@@ -224,18 +258,15 @@ main(int argc, char *argv[])
                        break;
                case 'T':
                        if ( ! toptions(&curp, optarg))
-                               return((int)MANDOCLEVEL_BADARG);
+                               return (int)MANDOCLEVEL_BADARG;
                        break;
                case 'W':
                        if ( ! woptions(&curp, optarg))
-                               return((int)MANDOCLEVEL_BADARG);
+                               return (int)MANDOCLEVEL_BADARG;
                        break;
                case 'w':
                        outmode = OUTMODE_FLN;
                        break;
-               case 'V':
-                       version();
-                       /* NOTREACHED */
                default:
                        show_usage = 1;
                        break;
@@ -262,23 +293,51 @@ main(int argc, char *argv[])
                }
        }
 
+       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. */
 
-       argc -= optind;
-       argv += optind;
-#if HAVE_SQLITE3
+       if (argc > 0) {
+               argc -= optind;
+               argv += optind;
+       }
        resp = NULL;
-#endif
 
-       /* Quirk for a man(1) section argument without -s. */
+       /*
+        * Quirks for help(1)
+        * and for a man(1) section argument without -s.
+        */
 
-       if (search.argmode == ARG_NAME &&
-           argv[0] != NULL &&
-           isdigit((unsigned char)argv[0][0]) &&
-           (argv[0][1] == '\0' || !strcmp(argv[0], "3p"))) {
-               search.sec = argv[0];
-               argv++;
-               argc--;
+       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;
@@ -286,22 +345,39 @@ main(int argc, char *argv[])
        /* man(1), whatis(1), apropos(1) */
 
        if (search.argmode != ARG_FILE) {
-#if HAVE_SQLITE3
                if (argc == 0)
                        usage(search.argmode);
 
+               if (search.argmode == ARG_NAME &&
+                   outmode == OUTMODE_ONE)
+                       search.firstmatch = 1;
+
                /* Access the mandoc database. */
 
-               manpath_parse(&paths, conf_file, defpaths, auxpaths);
+               manconf_parse(&conf, conf_file, defpaths, auxpaths);
+#if HAVE_SQLITE3
                mansearch_setup(1);
-               if( ! mansearch(&search, &paths, argc, argv, &res, &sz))
+               if ( ! mansearch(&search, &conf.manpath,
+                   argc, argv, &res, &sz))
                        usage(search.argmode);
-               resp = res;
+#else
+               if (search.argmode != ARG_NAME) {
+                       fputs("mandoc: database support not compiled in\n",
+                           stderr);
+                       return (int)MANDOCLEVEL_BADARG;
+               }
+               sz = 0;
+#endif
 
                if (sz == 0) {
                        if (search.argmode == ARG_NAME)
-                               fprintf(stderr, "%s: No entry for %s "
-                                   "in the manual.\n", progname, argv[0]);
+                               fs_search(&search, &conf.manpath,
+                                   argc, argv, &res, &sz);
+                       else
+                               warnx("nothing appropriate");
+               }
+
+               if (sz == 0) {
                        rc = MANDOCLEVEL_BADARG;
                        goto out;
                }
@@ -314,12 +390,13 @@ main(int argc, char *argv[])
 
                if (outmode == OUTMODE_ONE) {
                        argc = 1;
-                       best_prio = 10;
+                       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);
@@ -329,11 +406,13 @@ main(int argc, char *argv[])
                                    res[i].output);
                        else if (outmode == OUTMODE_ONE) {
                                /* Search for the best section. */
-                               isec = strcspn(res[i].file, "123456789");
-                               sec = res[i].file[isec];
-                               if ('\0' == sec)
+                               sec = res[i].file;
+                               sec += strcspn(sec, "123456789");
+                               if (sec[0] == '\0')
                                        continue;
-                               prio = sec_prios[sec - '1'];
+                               prio = sec_prios[sec[0] - '1'];
+                               if (sec[1] != '/')
+                                       prio += 10;
                                if (prio >= best_prio)
                                        continue;
                                best_prio = prio;
@@ -349,24 +428,25 @@ main(int argc, char *argv[])
 
                if (outmode == OUTMODE_FLN || outmode == OUTMODE_LST)
                        goto out;
-#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);
+#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 (use_pager && isatty(STDOUT_FILENO))
-               spawn_pager();
+       if (search.argmode == ARG_FILE && ! moptions(&options, auxpaths))
+               return (int)MANDOCLEVEL_BADARG;
 
-       curp.mchars = mchars_alloc();
-       curp.mp = mparse_alloc(options, curp.wlevel, mmsg,
-           curp.mchars, defos);
+       mchars_alloc();
+       curp.mp = mparse_alloc(options, curp.wlevel, mmsg, defos);
 
        /*
         * Conditionally start up the lookaside buffer before parsing.
@@ -374,66 +454,136 @@ main(int argc, char *argv[])
        if (OUTT_MAN == curp.outtype)
                mparse_keep(curp.mp);
 
-       if (argc == 0)
-               parse(&curp, STDIN_FILENO, "<stdin>", &rc);
+       if (argc < 1) {
+               if (use_pager)
+                       tag_files = tag_init();
+               parse(&curp, STDIN_FILENO, "<stdin>");
+       }
 
-       while (argc) {
-#if HAVE_SQLITE3
-               if (resp != NULL) {
-                       rc = mparse_open(curp.mp, &fd, resp->file,
-                           &child_pid);
-                       if (fd == -1)
-                               /* nothing */;
+       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(paths.paths[resp->ipath]);
-                               parse(&curp, fd, resp->file, &rc);
+                               chdir(conf.manpath.paths[resp->ipath]);
+                               parse(&curp, fd, resp->file);
                        } else
-                               rc = passthrough(resp->file, fd);
-                       resp++;
-               } else
-#endif
-               {
-                       rc = mparse_open(curp.mp, &fd, *argv++,
-                           &child_pid);
-                       if (fd != -1)
-                               parse(&curp, fd, argv[-1], &rc);
-               }
+                               passthrough(resp->file, fd,
+                                   conf.output.synopsisonly);
 
-               if (child_pid &&
-                   mparse_wait(curp.mp, child_pid) != MANDOCLEVEL_OK)
-                       rc = MANDOCLEVEL_SYSERR;
+                       if (argc > 1 && curp.outtype <= OUTT_UTF8)
+                               ascii_sepline(curp.outdata);
+               } else if (rc < MANDOCLEVEL_ERROR)
+                       rc = MANDOCLEVEL_ERROR;
 
                if (MANDOCLEVEL_OK != rc && curp.wstop)
                        break;
-               argc--;
+
+               if (resp != NULL)
+                       resp++;
+               else
+                       argv++;
+               if (--argc)
+                       mparse_reset(curp.mp);
        }
 
-       if (curp.outfree)
-               (*curp.outfree)(curp.outdata);
+       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(curp.mchars);
+       mchars_free();
 
-#if HAVE_SQLITE3
 out:
        if (search.argmode != ARG_FILE) {
-               manpath_free(&paths);
+               manconf_free(&conf);
+#if HAVE_SQLITE3
                mansearch_free(res, sz);
                mansearch_setup(0);
-       }
 #endif
+       }
 
        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.
+        */
 
-static void
-version(void)
-{
+       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(STDIN_FILENO);
+                       if (tc_pgid != man_pgid) {
+                               if (tc_pgid == pager_pid) {
+                                       (void)tcsetpgrp(STDIN_FILENO,
+                                           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(STDIN_FILENO, pager_pid);
+                               kill(pager_pid, SIGCONT);
+                       } else
+                               pager_pid = spawn_pager(tag_files);
+
+                       /* Wait for the pager to stop or exit. */
 
-       printf("mandoc %s\n", VERSION);
-       exit((int)MANDOCLEVEL_OK);
+                       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
@@ -442,22 +592,24 @@ usage(enum argmode argmode)
 
        switch (argmode) {
        case ARG_FILE:
-               fputs("usage: mandoc [-acfhklV] [-Ios=name] "
-                   "[-mformat] [-Ooption] [-Toutput] [-Wlevel]\n"
-                   "\t      [file ...]\n", stderr);
+               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 [-acfhklVw] [-C file] "
-                   "[-M path] [-m path] [-S arch] [-s section]\n"
+               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 [-acfhklVw] [-C file] "
+               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 [-acfhklVw] [-C file] "
+               fputs("usage: apropos [-acfhklw] [-C file] "
                    "[-M path] [-m path] [-O outkey] [-S arch]\n"
                    "\t       [-s section] expression ...\n", stderr);
                break;
@@ -465,145 +617,269 @@ usage(enum argmode argmode)
        exit((int)MANDOCLEVEL_BADARG);
 }
 
+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              form, globres;
+
+       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);
+       }
+
+       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:
+#if HAVE_SQLITE3
+       warnx("outdated mandoc.db lacks %s(%s) entry, run makewhatis %s",
+           name, sec, paths->paths[ipath]);
+#endif
+       *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;
+}
+
 static void
-parse(struct curparse *curp, int fd, const char *file,
-       enum mandoclevel *level)
+fs_search(const struct mansearch *cfg, const struct manpaths *paths,
+       int argc, char **argv, struct manpage **res, size_t *ressz)
 {
-       enum mandoclevel  rc;
-       struct mdoc      *mdoc;
-       struct man       *man;
+       const char *const sections[] =
+           {"1", "8", "6", "2", "3", "5", "7", "4", "9", "3p"};
+       const size_t nsec = sizeof(sections)/sizeof(sections[0]);
 
-       /* Begin by parsing the file itself. */
+       size_t           ipath, isec, lastsz;
 
-       assert(file);
-       assert(fd >= -1);
+       assert(cfg->argmode == ARG_NAME);
 
-       rc = mparse_readfd(curp->mp, fd, file);
+       *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
+parse(struct curparse *curp, int fd, const char *file)
+{
+       enum mandoclevel  rctmp;
+       struct roff_man  *man;
+
+       /* Begin by parsing the file itself. */
 
-       /* Stop immediately if the parse has failed. */
+       assert(file);
+       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.
         */
 
-       if (MANDOCLEVEL_OK != rc && curp->wstop)
-               goto cleanup;
+       if (rctmp != MANDOCLEVEL_OK && curp->wstop)
+               return;
 
        /* If unset, allocate output dev now (if applicable). */
 
-       if ( ! (curp->outman && curp->outmdoc)) {
+       if (curp->outdata == NULL) {
                switch (curp->outtype) {
                case OUTT_HTML:
-                       curp->outdata = html_alloc(curp->mchars,
-                           curp->outopts);
-                       curp->outfree = html_free;
+                       curp->outdata = html_alloc(curp->outopts);
                        break;
                case OUTT_UTF8:
-                       curp->outdata = utf8_alloc(curp->mchars,
-                           curp->outopts);
-                       curp->outfree = ascii_free;
+                       curp->outdata = utf8_alloc(curp->outopts);
                        break;
                case OUTT_LOCALE:
-                       curp->outdata = locale_alloc(curp->mchars,
-                           curp->outopts);
-                       curp->outfree = ascii_free;
+                       curp->outdata = locale_alloc(curp->outopts);
                        break;
                case OUTT_ASCII:
-                       curp->outdata = ascii_alloc(curp->mchars,
-                           curp->outopts);
-                       curp->outfree = ascii_free;
+                       curp->outdata = ascii_alloc(curp->outopts);
                        break;
                case OUTT_PDF:
-                       curp->outdata = pdf_alloc(curp->mchars,
-                           curp->outopts);
-                       curp->outfree = pspdf_free;
+                       curp->outdata = pdf_alloc(curp->outopts);
                        break;
                case OUTT_PS:
-                       curp->outdata = ps_alloc(curp->mchars,
-                           curp->outopts);
-                       curp->outfree = pspdf_free;
+                       curp->outdata = ps_alloc(curp->outopts);
                        break;
                default:
                        break;
                }
+       }
+
+       mparse_result(curp->mp, &man, NULL);
+
+       /* Execute the out device, if it exists. */
 
+       if (man == NULL)
+               return;
+       if (man->macroset == MACROSET_MDOC) {
+               mdoc_validate(man);
                switch (curp->outtype) {
                case OUTT_HTML:
-                       curp->outman = html_man;
-                       curp->outmdoc = html_mdoc;
+                       html_mdoc(curp->outdata, man);
                        break;
                case OUTT_TREE:
-                       curp->outman = tree_man;
-                       curp->outmdoc = tree_mdoc;
+                       tree_mdoc(curp->outdata, man);
                        break;
                case OUTT_MAN:
-                       curp->outmdoc = man_mdoc;
-                       curp->outman = man_man;
+                       man_mdoc(curp->outdata, man);
                        break;
                case OUTT_PDF:
-                       /* FALLTHROUGH */
                case OUTT_ASCII:
-                       /* FALLTHROUGH */
                case OUTT_UTF8:
-                       /* FALLTHROUGH */
                case OUTT_LOCALE:
-                       /* FALLTHROUGH */
                case OUTT_PS:
-                       curp->outman = terminal_man;
-                       curp->outmdoc = terminal_mdoc;
+                       terminal_mdoc(curp->outdata, man);
                        break;
                default:
                        break;
                }
        }
+       if (man->macroset == MACROSET_MAN) {
+               man_validate(man);
+               switch (curp->outtype) {
+               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;
+               }
+       }
+}
 
-       mparse_result(curp->mp, &mdoc, &man, NULL);
-
-       /* Execute the out device, if it exists. */
-
-       if (man && curp->outman)
-               (*curp->outman)(curp->outdata, man);
-       if (mdoc && curp->outmdoc)
-               (*curp->outmdoc)(curp->outdata, mdoc);
+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";
 
- cleanup:
+       FILE            *stream;
+       const char      *syscall;
+       char            *line, *cp;
+       size_t           linesz;
+       int              print;
 
-       mparse_reset(curp->mp);
+       line = NULL;
+       linesz = 0;
 
-       if (*level < rc)
-               *level = rc;
-}
+       if ((stream = fdopen(fd, "r")) == NULL) {
+               close(fd);
+               syscall = "fdopen";
+               goto fail;
+       }
 
-static enum mandoclevel
-passthrough(const char *file, int fd)
-{
-       char             buf[BUFSIZ];
-       const char      *syscall;
-       ssize_t          nr, nw, off;
-
-       while ((nr = read(fd, buf, BUFSIZ)) != -1 && nr != 0)
-               for (off = 0; off < nr; off += nw)
-                       if ((nw = write(STDOUT_FILENO, buf + off,
-                           (size_t)(nr - off))) == -1 || nw == 0) {
-                               close(fd);
-                               syscall = "write";
-                               goto fail;
+       print = 0;
+       while (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++;
+                       } else {
+                               if (strcmp(cp, synb) == 0 ||
+                                   strcmp(cp, synr) == 0)
+                                       print = 1;
+                               continue;
                        }
+               }
+               if (fputs(cp, stdout)) {
+                       fclose(stream);
+                       syscall = "fputs";
+                       goto fail;
+               }
+       }
 
-       close(fd);
+       if (ferror(stream)) {
+               fclose(stream);
+               syscall = "getline";
+               goto fail;
+       }
 
-       if (nr == 0)
-               return(MANDOCLEVEL_OK);
+done:
+       free(line);
+       fclose(stream);
+       return;
 
-       syscall = "read";
 fail:
-       fprintf(stderr, "%s: %s: SYSERR: %s: %s",
-           progname, file, syscall, strerror(errno));
-       return(MANDOCLEVEL_SYSERR);
+       free(line);
+       warn("%s: SYSERR: %s", file, syscall);
+       if (rc < MANDOCLEVEL_SYSERR)
+               rc = MANDOCLEVEL_SYSERR;
 }
 
 static int
@@ -619,11 +895,10 @@ koptions(int *options, char *arg)
        } else if ( ! strcmp(arg, "us-ascii")) {
                *options &= ~(MPARSE_UTF8 | MPARSE_LATIN1);
        } else {
-               fprintf(stderr, "%s: -K%s: Bad argument\n",
-                   progname, arg);
-               return(0);
+               warnx("-K %s: Bad argument", arg);
+               return 0;
        }
-       return(1);
+       return 1;
 }
 
 static int
@@ -639,12 +914,11 @@ moptions(int *options, char *arg)
        else if (0 == strcmp(arg, "an"))
                *options |= MPARSE_MAN;
        else {
-               fprintf(stderr, "%s: -m%s: Bad argument\n",
-                   progname, arg);
-               return(0);
+               warnx("-m %s: Bad argument", arg);
+               return 0;
        }
 
-       return(1);
+       return 1;
 }
 
 static int
@@ -673,26 +947,26 @@ toptions(struct curparse *curp, char *arg)
        else if (0 == strcmp(arg, "pdf"))
                curp->outtype = OUTT_PDF;
        else {
-               fprintf(stderr, "%s: -T%s: Bad argument\n",
-                   progname, 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;
-       const char      *toks[6];
+       const char      *toks[7];
 
        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;
@@ -701,7 +975,6 @@ woptions(struct curparse *curp, char *arg)
                        curp->wstop = 1;
                        break;
                case 1:
-                       /* FALLTHROUGH */
                case 2:
                        curp->wlevel = MANDOCLEVEL_WARNING;
                        break;
@@ -709,16 +982,18 @@ woptions(struct curparse *curp, char *arg)
                        curp->wlevel = MANDOCLEVEL_ERROR;
                        break;
                case 4:
-                       curp->wlevel = MANDOCLEVEL_FATAL;
+                       curp->wlevel = MANDOCLEVEL_UNSUPP;
+                       break;
+               case 5:
+                       curp->wlevel = MANDOCLEVEL_BADARG;
                        break;
                default:
-                       fprintf(stderr, "%s: -W%s: Bad argument\n",
-                           progname, o);
-                       return(0);
+                       warnx("-W %s: Bad argument", o);
+                       return 0;
                }
        }
 
-       return(1);
+       return 1;
 }
 
 static void
@@ -727,7 +1002,7 @@ mmsg(enum mandocerr t, enum mandoclevel lvl,
 {
        const char      *mparse_msg;
 
-       fprintf(stderr, "%s: %s:", progname, file);
+       fprintf(stderr, "%s: %s:", getprogname(), file);
 
        if (line)
                fprintf(stderr, "%d:%d:", line, col + 1);
@@ -743,53 +1018,23 @@ mmsg(enum mandocerr t, enum mandoclevel lvl,
        fputc('\n', stderr);
 }
 
-static void
-spawn_pager(void)
+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;
-       int              fildes[2];
+       size_t           cmdlen;
        int              argc;
-
-       if (pipe(fildes) == -1) {
-               fprintf(stderr, "%s: pipe: %s\n",
-                   progname, strerror(errno));
-               return;
-       }
-
-       switch (fork()) {
-       case -1:
-               fprintf(stderr, "%s: fork: %s\n",
-                   progname, strerror(errno));
-               exit((int)MANDOCLEVEL_SYSERR);
-       case 0:
-               close(fildes[0]);
-               if (dup2(fildes[1], STDOUT_FILENO) == -1) {
-                       fprintf(stderr, "%s: dup output: %s\n",
-                           progname, strerror(errno));
-                       exit((int)MANDOCLEVEL_SYSERR);
-               }
-               return;
-       default:
-               break;
-       }
-
-       /* The original process becomes the pager. */
-
-       close(fildes[1]);
-       if (dup2(fildes[0], STDIN_FILENO) == -1) {
-               fprintf(stderr, "%s: dup input: %s\n",
-                   progname, strerror(errno));
-               exit((int)MANDOCLEVEL_SYSERR);
-       }
+       pid_t            pager_pid;
 
        pager = getenv("MANPAGER");
        if (pager == NULL || *pager == '\0')
                pager = getenv("PAGER");
        if (pager == NULL || *pager == '\0')
-               pager = "/usr/bin/more -s";
+               pager = "more -s";
        cp = mandoc_strdup(pager);
 
        /*
@@ -798,7 +1043,7 @@ spawn_pager(void)
         */
 
        argc = 0;
-       while (argc + 1 < MAX_PAGER_ARGS) {
+       while (argc + 4 < MAX_PAGER_ARGS) {
                argv[argc++] = cp;
                cp = strchr(cp, ' ');
                if (cp == NULL)
@@ -809,12 +1054,47 @@ spawn_pager(void)
                if (*cp == '\0')
                        break;
        }
+
+       /* For more(1) and less(1), use the tag file. */
+
+       if ((cmdlen = strlen(argv[0])) >= 4) {
+               cp = argv[0] + cmdlen - 4;
+               if (strcmp(cp, "less") == 0 || strcmp(cp, "more") == 0) {
+                       argv[argc++] = mandoc_strdup("-T");
+                       argv[argc++] = tag_files->tfn;
+               }
+       }
+       argv[argc++] = tag_files->ofn;
        argv[argc] = NULL;
 
-       /* Hand over to the pager. */
+       switch (pager_pid = fork()) {
+       case -1:
+               err((int)MANDOCLEVEL_SYSERR, "fork");
+       case 0:
+               break;
+       default:
+               (void)setpgid(pager_pid, 0);
+               (void)tcsetpgrp(STDIN_FILENO, 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(STDIN_FILENO) != getpid())
+               nanosleep(&timeout, NULL);
 
        execvp(argv[0], argv);
-       fprintf(stderr, "%s: exec: %s\n",
-           progname, strerror(errno));
-       exit((int)MANDOCLEVEL_SYSERR);
+       err((int)MANDOCLEVEL_SYSERR, "exec %s", argv[0]);
 }