]> git.cameronkatri.com Git - mandoc.git/blobdiff - mdoc_validate.c
discard .Rs head arguments and improve .Rs diagnostics
[mandoc.git] / mdoc_validate.c
index 8c8d06f68d0e370edc3747ecc26ffe10391b5870..417e21615c43f22f66b3c852507e885e3fda974e 100644 (file)
@@ -1,7 +1,7 @@
-/*     $Id: mdoc_validate.c,v 1.209 2014/04/15 00:41:09 schwarze Exp $ */
+/*     $Id: mdoc_validate.c,v 1.268 2015/02/04 18:03:47 schwarze Exp $ */
 /*
  * Copyright (c) 2008-2012 Kristaps Dzonsons <kristaps@bsd.lv>
- * Copyright (c) 2010-2014 Ingo Schwarze <schwarze@openbsd.org>
+ * Copyright (c) 2010-2015 Ingo Schwarze <schwarze@openbsd.org>
  * Copyright (c) 2010 Joerg Sonnenberger <joerg@netbsd.org>
  *
  * Permission to use, copy, modify, and distribute this software for any
  * 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"
-#endif
 
+#include <sys/types.h>
 #ifndef OSNAME
 #include <sys/utsname.h>
 #endif
 
-#include <sys/types.h>
-
 #include <assert.h>
 #include <ctype.h>
 #include <limits.h>
 #define        PRE_ARGS  struct mdoc *mdoc, struct mdoc_node *n
 #define        POST_ARGS struct mdoc *mdoc
 
-#define        NUMSIZ    32
-
 enum   check_ineq {
        CHECK_LT,
        CHECK_GT,
        CHECK_EQ
 };
 
-enum   check_lvl {
-       CHECK_WARN,
-       CHECK_ERROR,
-};
-
-typedef        int     (*v_pre)(PRE_ARGS);
-typedef        int     (*v_post)(POST_ARGS);
+typedef        void    (*v_pre)(PRE_ARGS);
+typedef        void    (*v_post)(POST_ARGS);
 
 struct valids {
-       v_pre   *pre;
-       v_post  *post;
+       v_pre    pre;
+       v_post   post;
 };
 
-static int      check_count(struct mdoc *, enum mdoc_type, 
-                       enum check_lvl, enum check_ineq, int);
-static int      check_parent(PRE_ARGS, enum mdoct, enum mdoc_type);
+static void     check_count(struct mdoc *, enum mdoc_type,
+                       enum check_ineq, int);
 static void     check_text(struct mdoc *, int, int, char *);
-static void     check_argv(struct mdoc *, 
+static void     check_argv(struct mdoc *,
                        struct mdoc_node *, struct mdoc_argv *);
 static void     check_args(struct mdoc *, struct mdoc_node *);
+static int      child_an(const struct mdoc_node *);
 static enum mdoc_sec   a2sec(const char *);
 static size_t          macro2len(enum mdoct);
-
-static int      ebool(POST_ARGS);
-static int      berr_ge1(POST_ARGS);
-static int      bwarn_ge1(POST_ARGS);
-static int      ewarn_eq0(POST_ARGS);
-static int      ewarn_eq1(POST_ARGS);
-static int      ewarn_ge1(POST_ARGS);
-static int      ewarn_le1(POST_ARGS);
-static int      hwarn_eq0(POST_ARGS);
-static int      hwarn_eq1(POST_ARGS);
-static int      hwarn_ge1(POST_ARGS);
-static int      hwarn_le1(POST_ARGS);
-
-static int      post_an(POST_ARGS);
-static int      post_at(POST_ARGS);
-static int      post_bf(POST_ARGS);
-static int      post_bl(POST_ARGS);
-static int      post_bl_block(POST_ARGS);
-static int      post_bl_block_width(POST_ARGS);
-static int      post_bl_block_tag(POST_ARGS);
-static int      post_bl_head(POST_ARGS);
-static int      post_bx(POST_ARGS);
-static int      post_defaults(POST_ARGS);
-static int      post_dd(POST_ARGS);
-static int      post_dt(POST_ARGS);
-static int      post_eoln(POST_ARGS);
-static int      post_hyph(POST_ARGS);
-static int      post_ignpar(POST_ARGS);
-static int      post_it(POST_ARGS);
-static int      post_lb(POST_ARGS);
-static int      post_literal(POST_ARGS);
-static int      post_nm(POST_ARGS);
-static int      post_ns(POST_ARGS);
-static int      post_os(POST_ARGS);
-static int      post_par(POST_ARGS);
-static int      post_prol(POST_ARGS);
-static int      post_root(POST_ARGS);
-static int      post_rs(POST_ARGS);
-static int      post_sh(POST_ARGS);
-static int      post_sh_body(POST_ARGS);
-static int      post_sh_head(POST_ARGS);
-static int      post_st(POST_ARGS);
-static int      post_std(POST_ARGS);
-static int      post_vt(POST_ARGS);
-static int      pre_an(PRE_ARGS);
-static int      pre_bd(PRE_ARGS);
-static int      pre_bl(PRE_ARGS);
-static int      pre_dd(PRE_ARGS);
-static int      pre_display(PRE_ARGS);
-static int      pre_dt(PRE_ARGS);
-static int      pre_it(PRE_ARGS);
-static int      pre_literal(PRE_ARGS);
-static int      pre_os(PRE_ARGS);
-static int      pre_par(PRE_ARGS);
-static int      pre_sh(PRE_ARGS);
-static int      pre_ss(PRE_ARGS);
-static int      pre_std(PRE_ARGS);
-
-static v_post   posts_an[] = { post_an, NULL };
-static v_post   posts_at[] = { post_at, post_defaults, NULL };
-static v_post   posts_bd[] = { post_literal, hwarn_eq0, bwarn_ge1, NULL };
-static v_post   posts_bf[] = { hwarn_le1, post_bf, NULL };
-static v_post   posts_bk[] = { hwarn_eq0, bwarn_ge1, NULL };
-static v_post   posts_bl[] = { bwarn_ge1, post_bl, NULL };
-static v_post   posts_bx[] = { post_bx, NULL };
-static v_post   posts_bool[] = { ebool, NULL };
-static v_post   posts_eoln[] = { post_eoln, NULL };
-static v_post   posts_defaults[] = { post_defaults, NULL };
-static v_post   posts_d1[] = { bwarn_ge1, post_hyph, NULL };
-static v_post   posts_dd[] = { post_dd, post_prol, NULL };
-static v_post   posts_dl[] = { post_literal, bwarn_ge1, NULL };
-static v_post   posts_dt[] = { post_dt, post_prol, NULL };
-static v_post   posts_fo[] = { hwarn_eq1, bwarn_ge1, NULL };
-static v_post   posts_hyph[] = { post_hyph, NULL };
-static v_post   posts_hyphtext[] = { ewarn_ge1, post_hyph, NULL };
-static v_post   posts_it[] = { post_it, NULL };
-static v_post   posts_lb[] = { post_lb, NULL };
-static v_post   posts_nd[] = { berr_ge1, post_hyph, NULL };
-static v_post   posts_nm[] = { post_nm, NULL };
-static v_post   posts_notext[] = { ewarn_eq0, NULL };
-static v_post   posts_ns[] = { post_ns, NULL };
-static v_post   posts_os[] = { post_os, post_prol, NULL };
-static v_post   posts_pp[] = { post_par, ewarn_eq0, NULL };
-static v_post   posts_rs[] = { post_rs, NULL };
-static v_post   posts_sh[] = { post_ignpar,hwarn_ge1,post_sh,post_hyph,NULL };
-static v_post   posts_sp[] = { post_par, ewarn_le1, NULL };
-static v_post   posts_ss[] = { post_ignpar, hwarn_ge1, post_hyph, NULL };
-static v_post   posts_st[] = { post_st, NULL };
-static v_post   posts_std[] = { post_std, NULL };
-static v_post   posts_text[] = { ewarn_ge1, NULL };
-static v_post   posts_text1[] = { ewarn_eq1, NULL };
-static v_post   posts_vt[] = { post_vt, NULL };
-static v_pre    pres_an[] = { pre_an, NULL };
-static v_pre    pres_bd[] = { pre_display, pre_bd, pre_literal, pre_par, NULL };
-static v_pre    pres_bl[] = { pre_bl, pre_par, NULL };
-static v_pre    pres_d1[] = { pre_display, NULL };
-static v_pre    pres_dl[] = { pre_literal, pre_display, NULL };
-static v_pre    pres_dd[] = { pre_dd, NULL };
-static v_pre    pres_dt[] = { pre_dt, NULL };
-static v_pre    pres_it[] = { pre_it, pre_par, NULL };
-static v_pre    pres_os[] = { pre_os, NULL };
-static v_pre    pres_pp[] = { pre_par, NULL };
-static v_pre    pres_sh[] = { pre_sh, NULL };
-static v_pre    pres_ss[] = { pre_ss, NULL };
-static v_pre    pres_std[] = { pre_std, NULL };
+static void     rewrite_macro2len(char **);
+
+static void     bwarn_ge1(POST_ARGS);
+static void     ewarn_eq1(POST_ARGS);
+static void     ewarn_ge1(POST_ARGS);
+static void     hwarn_eq0(POST_ARGS);
+
+static void     post_an(POST_ARGS);
+static void     post_at(POST_ARGS);
+static void     post_bf(POST_ARGS);
+static void     post_bk(POST_ARGS);
+static void     post_bl(POST_ARGS);
+static void     post_bl_block(POST_ARGS);
+static void     post_bl_block_tag(POST_ARGS);
+static void     post_bl_head(POST_ARGS);
+static void     post_bx(POST_ARGS);
+static void     post_d1(POST_ARGS);
+static void     post_defaults(POST_ARGS);
+static void     post_dd(POST_ARGS);
+static void     post_dt(POST_ARGS);
+static void     post_en(POST_ARGS);
+static void     post_es(POST_ARGS);
+static void     post_eoln(POST_ARGS);
+static void     post_ex(POST_ARGS);
+static void     post_fa(POST_ARGS);
+static void     post_fn(POST_ARGS);
+static void     post_fname(POST_ARGS);
+static void     post_fo(POST_ARGS);
+static void     post_hyph(POST_ARGS);
+static void     post_hyphtext(POST_ARGS);
+static void     post_ignpar(POST_ARGS);
+static void     post_it(POST_ARGS);
+static void     post_lb(POST_ARGS);
+static void     post_literal(POST_ARGS);
+static void     post_nd(POST_ARGS);
+static void     post_nm(POST_ARGS);
+static void     post_ns(POST_ARGS);
+static void     post_os(POST_ARGS);
+static void     post_par(POST_ARGS);
+static void     post_root(POST_ARGS);
+static void     post_rs(POST_ARGS);
+static void     post_sh(POST_ARGS);
+static void     post_sh_head(POST_ARGS);
+static void     post_sh_name(POST_ARGS);
+static void     post_sh_see_also(POST_ARGS);
+static void     post_sh_authors(POST_ARGS);
+static void     post_sm(POST_ARGS);
+static void     post_st(POST_ARGS);
+static void     post_vt(POST_ARGS);
+
+static void     pre_an(PRE_ARGS);
+static void     pre_bd(PRE_ARGS);
+static void     pre_bl(PRE_ARGS);
+static void     pre_dd(PRE_ARGS);
+static void     pre_display(PRE_ARGS);
+static void     pre_dt(PRE_ARGS);
+static void     pre_literal(PRE_ARGS);
+static void     pre_obsolete(PRE_ARGS);
+static void     pre_os(PRE_ARGS);
+static void     pre_par(PRE_ARGS);
+static void     pre_std(PRE_ARGS);
 
 static const struct valids mdoc_valids[MDOC_MAX] = {
        { NULL, NULL },                         /* Ap */
-       { pres_dd, posts_dd },                  /* Dd */
-       { pres_dt, posts_dt },                  /* Dt */
-       { pres_os, posts_os },                  /* Os */
-       { pres_sh, posts_sh },                  /* Sh */ 
-       { pres_ss, posts_ss },                  /* Ss */ 
-       { pres_pp, posts_pp },                  /* Pp */ 
-       { pres_d1, posts_d1 },                  /* D1 */
-       { pres_dl, posts_dl },                  /* Dl */
-       { pres_bd, posts_bd },                  /* Bd */
+       { pre_dd, post_dd },                    /* Dd */
+       { pre_dt, post_dt },                    /* Dt */
+       { pre_os, post_os },                    /* Os */
+       { NULL, post_sh },                      /* Sh */
+       { NULL, post_ignpar },                  /* Ss */
+       { pre_par, post_par },                  /* Pp */
+       { pre_display, post_d1 },               /* D1 */
+       { pre_literal, post_literal },          /* Dl */
+       { pre_bd, post_literal },               /* Bd */
        { NULL, NULL },                         /* Ed */
-       { pres_bl, posts_bl },                  /* Bl */ 
+       { pre_bl, post_bl },                    /* Bl */
        { NULL, NULL },                         /* El */
-       { pres_it, posts_it },                  /* It */
-       { NULL, NULL },                         /* Ad */ 
-       { pres_an, posts_an },                  /* An */ 
-       { NULL, posts_defaults },               /* Ar */
-       { NULL, NULL },                         /* Cd */ 
+       { pre_par, post_it },                   /* It */
+       { NULL, NULL },                         /* Ad */
+       { pre_an, post_an },                    /* An */
+       { NULL, post_defaults },                /* Ar */
+       { NULL, NULL },                         /* Cd */
        { NULL, NULL },                         /* Cm */
-       { NULL, NULL },                         /* Dv */ 
-       { NULL, NULL },                         /* Er */ 
-       { NULL, NULL },                         /* Ev */ 
-       { pres_std, posts_std },                /* Ex */ 
-       { NULL, NULL },                         /* Fa */ 
-       { NULL, posts_text },                   /* Fd */
+       { NULL, NULL },                         /* Dv */
+       { NULL, NULL },                         /* Er */
+       { NULL, NULL },                         /* Ev */
+       { pre_std, post_ex },                   /* Ex */
+       { NULL, post_fa },                      /* Fa */
+       { NULL, ewarn_ge1 },                    /* Fd */
        { NULL, NULL },                         /* Fl */
-       { NULL, NULL },                         /* Fn */ 
-       { NULL, NULL },                         /* Ft */ 
-       { NULL, NULL },                         /* Ic */ 
-       { NULL, posts_text1 },                  /* In */ 
-       { NULL, posts_defaults },               /* Li */
-       { NULL, posts_nd },                     /* Nd */
-       { NULL, posts_nm },                     /* Nm */
+       { NULL, post_fn },                      /* Fn */
+       { NULL, NULL },                         /* Ft */
+       { NULL, NULL },                         /* Ic */
+       { NULL, ewarn_eq1 },                    /* In */
+       { NULL, post_defaults },                /* Li */
+       { NULL, post_nd },                      /* Nd */
+       { NULL, post_nm },                      /* Nm */
        { NULL, NULL },                         /* Op */
-       { NULL, NULL },                         /* Ot */
-       { NULL, posts_defaults },               /* Pa */
-       { pres_std, posts_std },                /* Rv */
-       { NULL, posts_st },                     /* St */ 
+       { pre_obsolete, NULL },                 /* Ot */
+       { NULL, post_defaults },                /* Pa */
+       { pre_std, NULL },                      /* Rv */
+       { NULL, post_st },                      /* St */
        { NULL, NULL },                         /* Va */
-       { NULL, posts_vt },                     /* Vt */ 
-       { NULL, posts_text },                   /* Xr */ 
-       { NULL, posts_text },                   /* %A */
-       { NULL, posts_hyphtext },               /* %B */ /* FIXME: can be used outside Rs/Re. */
-       { NULL, posts_text },                   /* %D */
-       { NULL, posts_text },                   /* %I */
-       { NULL, posts_text },                   /* %J */
-       { NULL, posts_hyphtext },               /* %N */
-       { NULL, posts_hyphtext },               /* %O */
-       { NULL, posts_text },                   /* %P */
-       { NULL, posts_hyphtext },               /* %R */
-       { NULL, posts_hyphtext },               /* %T */ /* FIXME: can be used outside Rs/Re. */
-       { NULL, posts_text },                   /* %V */
+       { NULL, post_vt },                      /* Vt */
+       { NULL, ewarn_ge1 },                    /* Xr */
+       { NULL, ewarn_ge1 },                    /* %A */
+       { NULL, post_hyphtext },                /* %B */ /* FIXME: can be used outside Rs/Re. */
+       { NULL, ewarn_ge1 },                    /* %D */
+       { NULL, ewarn_ge1 },                    /* %I */
+       { NULL, ewarn_ge1 },                    /* %J */
+       { NULL, post_hyphtext },                /* %N */
+       { NULL, post_hyphtext },                /* %O */
+       { NULL, ewarn_ge1 },                    /* %P */
+       { NULL, post_hyphtext },                /* %R */
+       { NULL, post_hyphtext },                /* %T */ /* FIXME: can be used outside Rs/Re. */
+       { NULL, ewarn_ge1 },                    /* %V */
        { NULL, NULL },                         /* Ac */
        { NULL, NULL },                         /* Ao */
        { NULL, NULL },                         /* Aq */
-       { NULL, posts_at },                     /* At */ 
+       { NULL, post_at },                      /* At */
        { NULL, NULL },                         /* Bc */
-       { NULL, posts_bf },                     /* Bf */
+       { NULL, post_bf },                      /* Bf */
        { NULL, NULL },                         /* Bo */
        { NULL, NULL },                         /* Bq */
        { NULL, NULL },                         /* Bsx */
-       { NULL, posts_bx },                     /* Bx */
-       { NULL, posts_bool },                   /* Db */
+       { NULL, post_bx },                      /* Bx */
+       { pre_obsolete, NULL },                 /* Db */
        { NULL, NULL },                         /* Dc */
        { NULL, NULL },                         /* Do */
        { NULL, NULL },                         /* Dq */
        { NULL, NULL },                         /* Ec */
-       { NULL, NULL },                         /* Ef */ 
-       { NULL, NULL },                         /* Em */ 
+       { NULL, NULL },                         /* Ef */
+       { NULL, NULL },                         /* Em */
        { NULL, NULL },                         /* Eo */
        { NULL, NULL },                         /* Fx */
-       { NULL, NULL },                         /* Ms */ 
-       { NULL, posts_notext },                 /* No */
-       { NULL, posts_ns },                     /* Ns */
+       { NULL, NULL },                         /* Ms */
+       { NULL, NULL },                         /* No */
+       { NULL, post_ns },                      /* Ns */
        { NULL, NULL },                         /* Nx */
        { NULL, NULL },                         /* Ox */
        { NULL, NULL },                         /* Pc */
-       { NULL, posts_text1 },                  /* Pf */
+       { NULL, NULL },                         /* Pf */
        { NULL, NULL },                         /* Po */
        { NULL, NULL },                         /* Pq */
        { NULL, NULL },                         /* Qc */
@@ -267,42 +213,42 @@ static    const struct valids mdoc_valids[MDOC_MAX] = {
        { NULL, NULL },                         /* Qo */
        { NULL, NULL },                         /* Qq */
        { NULL, NULL },                         /* Re */
-       { NULL, posts_rs },                     /* Rs */
+       { NULL, post_rs },                      /* Rs */
        { NULL, NULL },                         /* Sc */
        { NULL, NULL },                         /* So */
        { NULL, NULL },                         /* Sq */
-       { NULL, posts_bool },                   /* Sm */ 
-       { NULL, posts_hyph },                   /* Sx */
+       { NULL, post_sm },                      /* Sm */
+       { NULL, post_hyph },                    /* Sx */
        { NULL, NULL },                         /* Sy */
        { NULL, NULL },                         /* Tn */
        { NULL, NULL },                         /* Ux */
        { NULL, NULL },                         /* Xc */
        { NULL, NULL },                         /* Xo */
-       { NULL, posts_fo },                     /* Fo */ 
-       { NULL, NULL },                         /* Fc */ 
+       { NULL, post_fo },                      /* Fo */
+       { NULL, NULL },                         /* Fc */
        { NULL, NULL },                         /* Oo */
        { NULL, NULL },                         /* Oc */
-       { NULL, posts_bk },                     /* Bk */
+       { NULL, post_bk },                      /* Bk */
        { NULL, NULL },                         /* Ek */
-       { NULL, posts_eoln },                   /* Bt */
+       { NULL, post_eoln },                    /* Bt */
        { NULL, NULL },                         /* Hf */
-       { NULL, NULL },                         /* Fr */
-       { NULL, posts_eoln },                   /* Ud */
-       { NULL, posts_lb },                     /* Lb */
-       { pres_pp, posts_pp },                  /* Lp */ 
-       { NULL, NULL },                         /* Lk */ 
-       { NULL, posts_defaults },               /* Mt */ 
-       { NULL, NULL },                         /* Brq */ 
-       { NULL, NULL },                         /* Bro */ 
-       { NULL, NULL },                         /* Brc */ 
-       { NULL, posts_text },                   /* %C */
-       { NULL, NULL },                         /* Es */
-       { NULL, NULL },                         /* En */
+       { pre_obsolete, NULL },                 /* Fr */
+       { NULL, post_eoln },                    /* Ud */
+       { NULL, post_lb },                      /* Lb */
+       { pre_par, post_par },                  /* Lp */
+       { NULL, NULL },                         /* Lk */
+       { NULL, post_defaults },                /* Mt */
+       { NULL, NULL },                         /* Brq */
+       { NULL, NULL },                         /* Bro */
+       { NULL, NULL },                         /* Brc */
+       { NULL, ewarn_ge1 },                    /* %C */
+       { pre_obsolete, post_es },              /* Es */
+       { pre_obsolete, post_en },              /* En */
        { NULL, NULL },                         /* Dx */
-       { NULL, posts_text },                   /* %Q */
-       { NULL, posts_pp },                     /* br */
-       { NULL, posts_sp },                     /* sp */
-       { NULL, posts_text1 },                  /* %U */
+       { NULL, ewarn_ge1 },                    /* %Q */
+       { NULL, post_par },                     /* br */
+       { NULL, post_par },                     /* sp */
+       { NULL, ewarn_eq1 },                    /* %U */
        { NULL, NULL },                         /* Ta */
        { NULL, NULL },                         /* ll */
 };
@@ -352,169 +298,132 @@ static  const char * const secnames[SEC__MAX] = {
        NULL
 };
 
-int
+
+void
 mdoc_valid_pre(struct mdoc *mdoc, struct mdoc_node *n)
 {
-       v_pre           *p;
-       int              line, pos;
-       char            *tp;
+       v_pre    p;
 
        switch (n->type) {
-       case (MDOC_TEXT):
-               tp = n->string;
-               line = n->line;
-               pos = n->pos;
-               check_text(mdoc, line, pos, tp);
+       case MDOC_TEXT:
+               check_text(mdoc, n->line, n->pos, n->string);
                /* FALLTHROUGH */
-       case (MDOC_TBL):
+       case MDOC_TBL:
                /* FALLTHROUGH */
-       case (MDOC_EQN):
+       case MDOC_EQN:
                /* FALLTHROUGH */
-       case (MDOC_ROOT):
-               return(1);
+       case MDOC_ROOT:
+               return;
        default:
                break;
        }
 
        check_args(mdoc, n);
-
-       if (NULL == mdoc_valids[n->tok].pre)
-               return(1);
-       for (p = mdoc_valids[n->tok].pre; *p; p++)
-               if ( ! (*p)(mdoc, n)) 
-                       return(0);
-       return(1);
+       p = mdoc_valids[n->tok].pre;
+       if (*p)
+               (*p)(mdoc, n);
 }
 
-
-int
+void
 mdoc_valid_post(struct mdoc *mdoc)
 {
-       v_post          *p;
+       struct mdoc_node *n;
+       v_post p;
 
-       if (MDOC_VALID & mdoc->last->flags)
-               return(1);
-       mdoc->last->flags |= MDOC_VALID;
+       n = mdoc->last;
+       if (n->flags & MDOC_VALID)
+               return;
+       n->flags |= MDOC_VALID;
 
-       switch (mdoc->last->type) {
-       case (MDOC_TEXT):
+       switch (n->type) {
+       case MDOC_TEXT:
                /* FALLTHROUGH */
-       case (MDOC_EQN):
+       case MDOC_EQN:
                /* FALLTHROUGH */
-       case (MDOC_TBL):
-               return(1);
-       case (MDOC_ROOT):
-               return(post_root(mdoc));
-       default:
+       case MDOC_TBL:
                break;
-       }
+       case MDOC_ROOT:
+               post_root(mdoc);
+               break;
+       default:
 
-       if (NULL == mdoc_valids[mdoc->last->tok].post)
-               return(1);
-       for (p = mdoc_valids[mdoc->last->tok].post; *p; p++)
-               if ( ! (*p)(mdoc)) 
-                       return(0);
+               /*
+                * Closing delimiters are not special at the
+                * beginning of a block, opening delimiters
+                * are not special at the end.
+                */
 
-       return(1);
+               if (n->child != NULL)
+                       n->child->flags &= ~MDOC_DELIMC;
+               if (n->last != NULL)
+                       n->last->flags &= ~MDOC_DELIMO;
+
+               /* Call the macro's postprocessor. */
+
+               p = mdoc_valids[n->tok].post;
+               if (*p)
+                       (*p)(mdoc);
+               break;
+       }
 }
 
-static int
-check_count(struct mdoc *mdoc, enum mdoc_type type, 
-               enum check_lvl lvl, enum check_ineq ineq, int val)
+static void
+check_count(struct mdoc *mdoc, enum mdoc_type type,
+       enum check_ineq ineq, int val)
 {
        const char      *p;
-       enum mandocerr   t;
 
        if (mdoc->last->type != type)
-               return(1);
-       
+               return;
+
        switch (ineq) {
-       case (CHECK_LT):
+       case CHECK_LT:
                p = "less than ";
                if (mdoc->last->nchild < val)
-                       return(1);
+                       return;
                break;
-       case (CHECK_GT):
+       case CHECK_GT:
                p = "more than ";
                if (mdoc->last->nchild > val)
-                       return(1);
+                       return;
                break;
-       case (CHECK_EQ):
+       case CHECK_EQ:
                p = "";
                if (val == mdoc->last->nchild)
-                       return(1);
+                       return;
                break;
        default:
                abort();
                /* NOTREACHED */
        }
 
-       t = lvl == CHECK_WARN ? MANDOCERR_ARGCWARN : MANDOCERR_ARGCOUNT;
-       mandoc_vmsg(t, mdoc->parse, mdoc->last->line, mdoc->last->pos,
-                       "want %s%d children (have %d)",
-                       p, val, mdoc->last->nchild);
-       return(1);
-}
-
-static int
-berr_ge1(POST_ARGS)
-{
-
-       return(check_count(mdoc, MDOC_BODY, CHECK_ERROR, CHECK_GT, 0));
+       mandoc_vmsg(MANDOCERR_ARGCWARN, mdoc->parse, mdoc->last->line,
+           mdoc->last->pos, "want %s%d children (have %d)",
+           p, val, mdoc->last->nchild);
 }
 
-static int
+static void
 bwarn_ge1(POST_ARGS)
 {
-       return(check_count(mdoc, MDOC_BODY, CHECK_WARN, CHECK_GT, 0));
-}
-
-static int
-ewarn_eq0(POST_ARGS)
-{
-       return(check_count(mdoc, MDOC_ELEM, CHECK_WARN, CHECK_EQ, 0));
+       check_count(mdoc, MDOC_BODY, CHECK_GT, 0);
 }
 
-static int
+static void
 ewarn_eq1(POST_ARGS)
 {
-       return(check_count(mdoc, MDOC_ELEM, CHECK_WARN, CHECK_EQ, 1));
+       check_count(mdoc, MDOC_ELEM, CHECK_EQ, 1);
 }
 
-static int
+static void
 ewarn_ge1(POST_ARGS)
 {
-       return(check_count(mdoc, MDOC_ELEM, CHECK_WARN, CHECK_GT, 0));
+       check_count(mdoc, MDOC_ELEM, CHECK_GT, 0);
 }
 
-static int
-ewarn_le1(POST_ARGS)
-{
-       return(check_count(mdoc, MDOC_ELEM, CHECK_WARN, CHECK_LT, 2));
-}
-
-static int
+static void
 hwarn_eq0(POST_ARGS)
 {
-       return(check_count(mdoc, MDOC_HEAD, CHECK_WARN, CHECK_EQ, 0));
-}
-
-static int
-hwarn_eq1(POST_ARGS)
-{
-       return(check_count(mdoc, MDOC_HEAD, CHECK_WARN, CHECK_EQ, 1));
-}
-
-static int
-hwarn_ge1(POST_ARGS)
-{
-       return(check_count(mdoc, MDOC_HEAD, CHECK_WARN, CHECK_GT, 0));
-}
-
-static int
-hwarn_le1(POST_ARGS)
-{
-       return(check_count(mdoc, MDOC_HEAD, CHECK_WARN, CHECK_LT, 2));
+       check_count(mdoc, MDOC_HEAD, CHECK_EQ, 0);
 }
 
 static void
@@ -537,12 +446,6 @@ check_argv(struct mdoc *mdoc, struct mdoc_node *n, struct mdoc_argv *v)
 
        for (i = 0; i < (int)v->sz; i++)
                check_text(mdoc, v->line, v->pos, v->value[i]);
-
-       /* FIXME: move to post_std(). */
-
-       if (MDOC_Std == v->arg)
-               if ( ! (v->sz || mdoc->meta.name))
-                       mdoc_nmsg(mdoc, n, MANDOCERR_NONAME);
 }
 
 static void
@@ -554,52 +457,37 @@ check_text(struct mdoc *mdoc, int ln, int pos, char *p)
                return;
 
        for (cp = p; NULL != (p = strchr(p, '\t')); p++)
-               mdoc_pmsg(mdoc, ln, pos + (int)(p - cp), MANDOCERR_BADTAB);
+               mandoc_msg(MANDOCERR_FI_TAB, mdoc->parse,
+                   ln, pos + (int)(p - cp), NULL);
 }
 
-static int
-check_parent(PRE_ARGS, enum mdoct tok, enum mdoc_type t)
-{
-
-       assert(n->parent);
-       if ((MDOC_ROOT == t || tok == n->parent->tok) &&
-                       (t == n->parent->type))
-               return(1);
-
-       mandoc_vmsg(MANDOCERR_SYNTCHILD, mdoc->parse, n->line, 
-                       n->pos, "want parent %s", MDOC_ROOT == t ? 
-                       "<root>" : mdoc_macronames[tok]);
-       return(0);
-}
-
-
-static int
+static void
 pre_display(PRE_ARGS)
 {
        struct mdoc_node *node;
 
        if (MDOC_BLOCK != n->type)
-               return(1);
+               return;
 
-       for (node = mdoc->last->parent; node; node = node->parent) 
+       for (node = mdoc->last->parent; node; node = node->parent)
                if (MDOC_BLOCK == node->type)
                        if (MDOC_Bd == node->tok)
                                break;
 
        if (node)
-               mdoc_nmsg(mdoc, n, MANDOCERR_NESTEDDISP);
-
-       return(1);
+               mandoc_vmsg(MANDOCERR_BD_NEST,
+                   mdoc->parse, n->line, n->pos,
+                   "%s in Bd", mdoc_macronames[n->tok]);
 }
 
-
-static int
+static void
 pre_bl(PRE_ARGS)
 {
-       int               i, comp, dup;
-       const char       *offs, *width;
-       enum mdoc_list    lt;
        struct mdoc_node *np;
+       struct mdoc_argv *argv, *wa;
+       int               i;
+       enum mdocargt     mdoclt;
+       enum mdoc_list    lt;
 
        if (MDOC_BLOCK != n->type) {
                if (ENDBODY_NOT != n->end) {
@@ -611,131 +499,136 @@ pre_bl(PRE_ARGS)
                assert(np);
                assert(MDOC_BLOCK == np->type);
                assert(MDOC_Bl == np->tok);
-               return(1);
+               return;
        }
 
-       /* 
+       /*
         * First figure out which kind of list to use: bind ourselves to
         * the first mentioned list type and warn about any remaining
         * ones.  If we find no list type, we default to LIST_item.
         */
 
-       /* LINTED */
+       wa = (n->args == NULL) ? NULL : n->args->argv;
+       mdoclt = MDOC_ARG_MAX;
        for (i = 0; n->args && i < (int)n->args->argc; i++) {
+               argv = n->args->argv + i;
                lt = LIST__NONE;
-               dup = comp = 0;
-               width = offs = NULL;
-               switch (n->args->argv[i].arg) {
+               switch (argv->arg) {
                /* Set list types. */
-               case (MDOC_Bullet):
+               case MDOC_Bullet:
                        lt = LIST_bullet;
                        break;
-               case (MDOC_Dash):
+               case MDOC_Dash:
                        lt = LIST_dash;
                        break;
-               case (MDOC_Enum):
+               case MDOC_Enum:
                        lt = LIST_enum;
                        break;
-               case (MDOC_Hyphen):
+               case MDOC_Hyphen:
                        lt = LIST_hyphen;
                        break;
-               case (MDOC_Item):
+               case MDOC_Item:
                        lt = LIST_item;
                        break;
-               case (MDOC_Tag):
+               case MDOC_Tag:
                        lt = LIST_tag;
                        break;
-               case (MDOC_Diag):
+               case MDOC_Diag:
                        lt = LIST_diag;
                        break;
-               case (MDOC_Hang):
+               case MDOC_Hang:
                        lt = LIST_hang;
                        break;
-               case (MDOC_Ohang):
+               case MDOC_Ohang:
                        lt = LIST_ohang;
                        break;
-               case (MDOC_Inset):
+               case MDOC_Inset:
                        lt = LIST_inset;
                        break;
-               case (MDOC_Column):
+               case MDOC_Column:
                        lt = LIST_column;
                        break;
                /* Set list arguments. */
-               case (MDOC_Compact):
-                       dup = n->norm->Bl.comp;
-                       comp = 1;
+               case MDOC_Compact:
+                       if (n->norm->Bl.comp)
+                               mandoc_msg(MANDOCERR_ARG_REP,
+                                   mdoc->parse, argv->line,
+                                   argv->pos, "Bl -compact");
+                       n->norm->Bl.comp = 1;
                        break;
-               case (MDOC_Width):
-                       /* NB: this can be empty! */
-                       if (n->args->argv[i].sz) {
-                               width = n->args->argv[i].value[0];
-                               dup = (NULL != n->norm->Bl.width);
+               case MDOC_Width:
+                       wa = argv;
+                       if (0 == argv->sz) {
+                               mandoc_msg(MANDOCERR_ARG_EMPTY,
+                                   mdoc->parse, argv->line,
+                                   argv->pos, "Bl -width");
+                               n->norm->Bl.width = "0n";
                                break;
                        }
-                       mdoc_nmsg(mdoc, n, MANDOCERR_IGNARGV);
+                       if (NULL != n->norm->Bl.width)
+                               mandoc_vmsg(MANDOCERR_ARG_REP,
+                                   mdoc->parse, argv->line,
+                                   argv->pos, "Bl -width %s",
+                                   argv->value[0]);
+                       rewrite_macro2len(argv->value);
+                       n->norm->Bl.width = argv->value[0];
                        break;
-               case (MDOC_Offset):
-                       /* NB: this can be empty! */
-                       if (n->args->argv[i].sz) {
-                               offs = n->args->argv[i].value[0];
-                               dup = (NULL != n->norm->Bl.offs);
+               case MDOC_Offset:
+                       if (0 == argv->sz) {
+                               mandoc_msg(MANDOCERR_ARG_EMPTY,
+                                   mdoc->parse, argv->line,
+                                   argv->pos, "Bl -offset");
                                break;
                        }
-                       mdoc_nmsg(mdoc, n, MANDOCERR_IGNARGV);
+                       if (NULL != n->norm->Bl.offs)
+                               mandoc_vmsg(MANDOCERR_ARG_REP,
+                                   mdoc->parse, argv->line,
+                                   argv->pos, "Bl -offset %s",
+                                   argv->value[0]);
+                       rewrite_macro2len(argv->value);
+                       n->norm->Bl.offs = argv->value[0];
                        break;
                default:
                        continue;
                }
-
-               /* Check: duplicate auxiliary arguments. */
-
-               if (dup)
-                       mdoc_nmsg(mdoc, n, MANDOCERR_ARGVREP);
-
-               if (comp && ! dup)
-                       n->norm->Bl.comp = comp;
-               if (offs && ! dup)
-                       n->norm->Bl.offs = offs;
-               if (width && ! dup)
-                       n->norm->Bl.width = width;
+               if (LIST__NONE == lt)
+                       continue;
+               mdoclt = argv->arg;
 
                /* Check: multiple list types. */
 
-               if (LIST__NONE != lt && n->norm->Bl.type != LIST__NONE)
-                       mdoc_nmsg(mdoc, n, MANDOCERR_LISTREP);
-
-               /* Assign list type. */
-
-               if (LIST__NONE != lt && n->norm->Bl.type == LIST__NONE) {
-                       n->norm->Bl.type = lt;
-                       /* Set column information, too. */
-                       if (LIST_column == lt) {
-                               n->norm->Bl.ncols = 
-                                       n->args->argv[i].sz;
-                               n->norm->Bl.cols = (void *)
-                                       n->args->argv[i].value;
-                       }
+               if (LIST__NONE != n->norm->Bl.type) {
+                       mandoc_vmsg(MANDOCERR_BL_REP,
+                           mdoc->parse, n->line, n->pos,
+                           "Bl -%s", mdoc_argnames[argv->arg]);
+                       continue;
                }
 
                /* The list type should come first. */
 
-               if (n->norm->Bl.type == LIST__NONE)
-                       if (n->norm->Bl.width || 
-                                       n->norm->Bl.offs || 
-                                       n->norm->Bl.comp)
-                               mdoc_nmsg(mdoc, n, MANDOCERR_LISTFIRST);
-
-               continue;
+               if (n->norm->Bl.width ||
+                   n->norm->Bl.offs ||
+                   n->norm->Bl.comp)
+                       mandoc_vmsg(MANDOCERR_BL_LATETYPE,
+                           mdoc->parse, n->line, n->pos, "Bl -%s",
+                           mdoc_argnames[n->args->argv[0].arg]);
+
+               n->norm->Bl.type = lt;
+               if (LIST_column == lt) {
+                       n->norm->Bl.ncols = argv->sz;
+                       n->norm->Bl.cols = (void *)argv->value;
+               }
        }
 
        /* Allow lists to default to LIST_item. */
 
        if (LIST__NONE == n->norm->Bl.type) {
-               mdoc_nmsg(mdoc, n, MANDOCERR_LISTTYPE);
+               mandoc_msg(MANDOCERR_BL_NOTYPE, mdoc->parse,
+                   n->line, n->pos, "Bl");
                n->norm->Bl.type = LIST_item;
        }
 
-       /* 
+       /*
         * Validate the width field.  Some list types don't need width
         * types and should be warned about them.  Others should have it
         * and must also be warned.  Yet others have a default and need
@@ -743,49 +636,52 @@ pre_bl(PRE_ARGS)
         */
 
        switch (n->norm->Bl.type) {
-       case (LIST_tag):
+       case LIST_tag:
                if (NULL == n->norm->Bl.width)
-                       mdoc_nmsg(mdoc, n, MANDOCERR_NOWIDTHARG);
+                       mandoc_msg(MANDOCERR_BL_NOWIDTH, mdoc->parse,
+                           n->line, n->pos, "Bl -tag");
                break;
-       case (LIST_column):
+       case LIST_column:
                /* FALLTHROUGH */
-       case (LIST_diag):
+       case LIST_diag:
                /* FALLTHROUGH */
-       case (LIST_ohang):
+       case LIST_ohang:
                /* FALLTHROUGH */
-       case (LIST_inset):
+       case LIST_inset:
                /* FALLTHROUGH */
-       case (LIST_item):
+       case LIST_item:
                if (n->norm->Bl.width)
-                       mdoc_nmsg(mdoc, n, MANDOCERR_IGNARGV);
+                       mandoc_vmsg(MANDOCERR_BL_SKIPW, mdoc->parse,
+                           wa->line, wa->pos, "Bl -%s",
+                           mdoc_argnames[mdoclt]);
                break;
-       case (LIST_bullet):
+       case LIST_bullet:
                /* FALLTHROUGH */
-       case (LIST_dash):
+       case LIST_dash:
                /* FALLTHROUGH */
-       case (LIST_hyphen):
+       case LIST_hyphen:
                if (NULL == n->norm->Bl.width)
                        n->norm->Bl.width = "2n";
                break;
-       case (LIST_enum):
+       case LIST_enum:
                if (NULL == n->norm->Bl.width)
                        n->norm->Bl.width = "3n";
                break;
        default:
                break;
        }
-
-       return(1);
+       pre_par(mdoc, n);
 }
 
-
-static int
+static void
 pre_bd(PRE_ARGS)
 {
-       int               i, dup, comp;
-       enum mdoc_disp    dt;
-       const char       *offs;
        struct mdoc_node *np;
+       struct mdoc_argv *argv;
+       int               i;
+       enum mdoc_disp    dt;
+
+       pre_literal(mdoc, n);
 
        if (MDOC_BLOCK != n->type) {
                if (ENDBODY_NOT != n->end) {
@@ -797,193 +693,170 @@ pre_bd(PRE_ARGS)
                assert(np);
                assert(MDOC_BLOCK == np->type);
                assert(MDOC_Bd == np->tok);
-               return(1);
+               return;
        }
 
-       /* LINTED */
        for (i = 0; n->args && i < (int)n->args->argc; i++) {
+               argv = n->args->argv + i;
                dt = DISP__NONE;
-               dup = comp = 0;
-               offs = NULL;
 
-               switch (n->args->argv[i].arg) {
-               case (MDOC_Centred):
-                       dt = DISP_centred;
+               switch (argv->arg) {
+               case MDOC_Centred:
+                       dt = DISP_centered;
                        break;
-               case (MDOC_Ragged):
+               case MDOC_Ragged:
                        dt = DISP_ragged;
                        break;
-               case (MDOC_Unfilled):
+               case MDOC_Unfilled:
                        dt = DISP_unfilled;
                        break;
-               case (MDOC_Filled):
+               case MDOC_Filled:
                        dt = DISP_filled;
                        break;
-               case (MDOC_Literal):
+               case MDOC_Literal:
                        dt = DISP_literal;
                        break;
-               case (MDOC_File):
-                       mdoc_nmsg(mdoc, n, MANDOCERR_BADDISP);
-                       return(0);
-               case (MDOC_Offset):
-                       /* NB: this can be empty! */
-                       if (n->args->argv[i].sz) {
-                               offs = n->args->argv[i].value[0];
-                               dup = (NULL != n->norm->Bd.offs);
+               case MDOC_File:
+                       mandoc_msg(MANDOCERR_BD_FILE, mdoc->parse,
+                           n->line, n->pos, NULL);
+                       break;
+               case MDOC_Offset:
+                       if (0 == argv->sz) {
+                               mandoc_msg(MANDOCERR_ARG_EMPTY,
+                                   mdoc->parse, argv->line,
+                                   argv->pos, "Bd -offset");
                                break;
                        }
-                       mdoc_nmsg(mdoc, n, MANDOCERR_IGNARGV);
+                       if (NULL != n->norm->Bd.offs)
+                               mandoc_vmsg(MANDOCERR_ARG_REP,
+                                   mdoc->parse, argv->line,
+                                   argv->pos, "Bd -offset %s",
+                                   argv->value[0]);
+                       rewrite_macro2len(argv->value);
+                       n->norm->Bd.offs = argv->value[0];
                        break;
-               case (MDOC_Compact):
-                       comp = 1;
-                       dup = n->norm->Bd.comp;
+               case MDOC_Compact:
+                       if (n->norm->Bd.comp)
+                               mandoc_msg(MANDOCERR_ARG_REP,
+                                   mdoc->parse, argv->line,
+                                   argv->pos, "Bd -compact");
+                       n->norm->Bd.comp = 1;
                        break;
                default:
                        abort();
                        /* NOTREACHED */
                }
+               if (DISP__NONE == dt)
+                       continue;
 
-               /* Check whether we have duplicates. */
-
-               if (dup)
-                       mdoc_nmsg(mdoc, n, MANDOCERR_ARGVREP);
-
-               /* Make our auxiliary assignments. */
-
-               if (offs && ! dup)
-                       n->norm->Bd.offs = offs;
-               if (comp && ! dup)
-                       n->norm->Bd.comp = comp;
-
-               /* Check whether a type has already been assigned. */
-
-               if (DISP__NONE != dt && n->norm->Bd.type != DISP__NONE)
-                       mdoc_nmsg(mdoc, n, MANDOCERR_DISPREP);
-
-               /* Make our type assignment. */
-
-               if (DISP__NONE != dt && n->norm->Bd.type == DISP__NONE)
+               if (DISP__NONE == n->norm->Bd.type)
                        n->norm->Bd.type = dt;
+               else
+                       mandoc_vmsg(MANDOCERR_BD_REP,
+                           mdoc->parse, n->line, n->pos,
+                           "Bd -%s", mdoc_argnames[argv->arg]);
        }
 
        if (DISP__NONE == n->norm->Bd.type) {
-               mdoc_nmsg(mdoc, n, MANDOCERR_DISPTYPE);
+               mandoc_msg(MANDOCERR_BD_NOTYPE, mdoc->parse,
+                   n->line, n->pos, "Bd");
                n->norm->Bd.type = DISP_ragged;
        }
-
-       return(1);
+       pre_par(mdoc, n);
 }
 
-
-static int
-pre_ss(PRE_ARGS)
-{
-
-       if (MDOC_BLOCK != n->type)
-               return(1);
-       return(check_parent(mdoc, n, MDOC_Sh, MDOC_BODY));
-}
-
-
-static int
-pre_sh(PRE_ARGS)
-{
-
-       if (MDOC_BLOCK != n->type)
-               return(1);
-       return(check_parent(mdoc, n, MDOC_MAX, MDOC_ROOT));
-}
-
-
-static int
-pre_it(PRE_ARGS)
-{
-
-       if (MDOC_BLOCK != n->type)
-               return(1);
-
-       return(check_parent(mdoc, n, MDOC_Bl, MDOC_BODY));
-}
-
-
-static int
+static void
 pre_an(PRE_ARGS)
 {
-       int              i;
+       struct mdoc_argv *argv;
+       size_t   i;
 
-       if (NULL == n->args)
-               return(1);
-       
-       for (i = 1; i < (int)n->args->argc; i++)
-               mdoc_pmsg(mdoc, n->args->argv[i].line, 
-                       n->args->argv[i].pos, MANDOCERR_IGNARGV);
+       if (n->args == NULL)
+               return;
+
+       for (i = 1; i < n->args->argc; i++) {
+               argv = n->args->argv + i;
+               mandoc_vmsg(MANDOCERR_AN_REP,
+                   mdoc->parse, argv->line, argv->pos,
+                   "An -%s", mdoc_argnames[argv->arg]);
+       }
 
-       if (MDOC_Split == n->args->argv[0].arg)
+       argv = n->args->argv;
+       if (argv->arg == MDOC_Split)
                n->norm->An.auth = AUTH_split;
-       else if (MDOC_Nosplit == n->args->argv[0].arg)
+       else if (argv->arg == MDOC_Nosplit)
                n->norm->An.auth = AUTH_nosplit;
        else
                abort();
-
-       return(1);
 }
 
-static int
+static void
 pre_std(PRE_ARGS)
 {
 
        if (n->args && 1 == n->args->argc)
                if (MDOC_Std == n->args->argv[0].arg)
-                       return(1);
+                       return;
 
-       mdoc_nmsg(mdoc, n, MANDOCERR_NOARGV);
-       return(1);
+       mandoc_msg(MANDOCERR_ARG_STD, mdoc->parse,
+           n->line, n->pos, mdoc_macronames[n->tok]);
 }
 
-static int
-pre_dt(PRE_ARGS)
+static void
+pre_obsolete(PRE_ARGS)
 {
 
-       if (NULL == mdoc->meta.date || mdoc->meta.os)
-               mdoc_nmsg(mdoc, n, MANDOCERR_PROLOGOOO);
+       if (MDOC_ELEM == n->type || MDOC_BLOCK == n->type)
+               mandoc_msg(MANDOCERR_MACRO_OBS, mdoc->parse,
+                   n->line, n->pos, mdoc_macronames[n->tok]);
+}
 
-       if (mdoc->meta.title)
-               mdoc_nmsg(mdoc, n, MANDOCERR_PROLOGREP);
+static void
+pre_dt(PRE_ARGS)
+{
 
-       return(1);
+       if (mdoc->meta.title != NULL)
+               mandoc_msg(MANDOCERR_PROLOG_REP, mdoc->parse,
+                   n->line, n->pos, "Dt");
+       else if (mdoc->meta.os != NULL)
+               mandoc_msg(MANDOCERR_PROLOG_ORDER, mdoc->parse,
+                   n->line, n->pos, "Dt after Os");
 }
 
-static int
+static void
 pre_os(PRE_ARGS)
 {
 
-       if (NULL == mdoc->meta.title || NULL == mdoc->meta.date)
-               mdoc_nmsg(mdoc, n, MANDOCERR_PROLOGOOO);
-
-       if (mdoc->meta.os)
-               mdoc_nmsg(mdoc, n, MANDOCERR_PROLOGREP);
-
-       return(1);
+       if (mdoc->meta.os != NULL)
+               mandoc_msg(MANDOCERR_PROLOG_REP, mdoc->parse,
+                   n->line, n->pos, "Os");
+       else if (mdoc->flags & MDOC_PBODY)
+               mandoc_msg(MANDOCERR_PROLOG_LATE, mdoc->parse,
+                   n->line, n->pos, "Os");
 }
 
-static int
+static void
 pre_dd(PRE_ARGS)
 {
 
-       if (mdoc->meta.title || mdoc->meta.os)
-               mdoc_nmsg(mdoc, n, MANDOCERR_PROLOGOOO);
-
-       if (mdoc->meta.date)
-               mdoc_nmsg(mdoc, n, MANDOCERR_PROLOGREP);
-
-       return(1);
+       if (mdoc->meta.date != NULL)
+               mandoc_msg(MANDOCERR_PROLOG_REP, mdoc->parse,
+                   n->line, n->pos, "Dd");
+       else if (mdoc->flags & MDOC_PBODY)
+               mandoc_msg(MANDOCERR_PROLOG_LATE, mdoc->parse,
+                   n->line, n->pos, "Dd");
+       else if (mdoc->meta.title != NULL)
+               mandoc_msg(MANDOCERR_PROLOG_ORDER, mdoc->parse,
+                   n->line, n->pos, "Dd after Dt");
+       else if (mdoc->meta.os != NULL)
+               mandoc_msg(MANDOCERR_PROLOG_ORDER, mdoc->parse,
+                   n->line, n->pos, "Dd after Os");
 }
 
-
-static int
+static void
 post_bf(POST_ARGS)
 {
-       struct mdoc_node *np;
+       struct mdoc_node *np, *nch;
        enum mdocargt     arg;
 
        /*
@@ -997,34 +870,36 @@ post_bf(POST_ARGS)
                        np = mdoc->last->pending->parent->head;
                } else if (MDOC_BLOCK != mdoc->last->type) {
                        np = mdoc->last->parent->head;
-               } else 
+               } else
                        np = mdoc->last->head;
 
                assert(np);
                assert(MDOC_HEAD == np->type);
                assert(MDOC_Bf == np->tok);
-               return(1);
+               return;
        }
 
        np = mdoc->last;
        assert(MDOC_BLOCK == np->parent->type);
        assert(MDOC_Bf == np->parent->tok);
 
-       /* 
-        * Cannot have both argument and parameter.
-        * If neither is specified, let it through with a warning. 
-        */
+       /* Check the number of arguments. */
 
-       if (np->parent->args && np->child) {
-               mdoc_nmsg(mdoc, np, MANDOCERR_SYNTARGVCOUNT);
-               return(0);
-       } else if (NULL == np->parent->args && NULL == np->child) {
-               mdoc_nmsg(mdoc, np, MANDOCERR_FONTTYPE);
-               return(1);
+       nch = np->child;
+       if (NULL == np->parent->args) {
+               if (NULL == nch) {
+                       mandoc_msg(MANDOCERR_BF_NOFONT, mdoc->parse,
+                           np->line, np->pos, "Bf");
+                       return;
+               }
+               nch = nch->next;
        }
+       if (NULL != nch)
+               mandoc_vmsg(MANDOCERR_ARG_EXCESS, mdoc->parse,
+                   nch->line, nch->pos, "Bf ... %s", nch->string);
 
        /* Extract argument into data. */
-       
+
        if (np->parent->args) {
                arg = np->parent->args->argv[0].arg;
                if (MDOC_Emphasis == arg)
@@ -1035,7 +910,7 @@ post_bf(POST_ARGS)
                        np->norm->Bf.font = FONT_Sy;
                else
                        abort();
-               return(1);
+               return;
        }
 
        /* Extract parameter into data. */
@@ -1046,57 +921,101 @@ post_bf(POST_ARGS)
                np->norm->Bf.font = FONT_Li;
        else if (0 == strcmp(np->child->string, "Sy"))
                np->norm->Bf.font = FONT_Sy;
-       else 
-               mdoc_nmsg(mdoc, np, MANDOCERR_FONTTYPE);
-
-       return(1);
+       else
+               mandoc_vmsg(MANDOCERR_BF_BADFONT, mdoc->parse,
+                   np->child->line, np->child->pos,
+                   "Bf %s", np->child->string);
 }
 
-static int
+static void
 post_lb(POST_ARGS)
 {
-       const char      *p;
-       char            *buf;
-       size_t           sz;
+       struct mdoc_node        *n;
+       const char              *stdlibname;
+       char                    *libname;
 
-       check_count(mdoc, MDOC_ELEM, CHECK_WARN, CHECK_EQ, 1);
+       check_count(mdoc, MDOC_ELEM, CHECK_EQ, 1);
+       n = mdoc->last->child;
+       assert(MDOC_TEXT == n->type);
 
-       assert(mdoc->last->child);
-       assert(MDOC_TEXT == mdoc->last->child->type);
+       if (NULL == (stdlibname = mdoc_a2lib(n->string)))
+               mandoc_asprintf(&libname,
+                   "library \\(lq%s\\(rq", n->string);
+       else
+               libname = mandoc_strdup(stdlibname);
 
-       p = mdoc_a2lib(mdoc->last->child->string);
+       free(n->string);
+       n->string = libname;
+}
 
-       /* If lookup ok, replace with table value. */
+static void
+post_eoln(POST_ARGS)
+{
+       const struct mdoc_node *n;
 
-       if (p) {
-               free(mdoc->last->child->string);
-               mdoc->last->child->string = mandoc_strdup(p);
-               return(1);
-       }
+       n = mdoc->last;
+       if (n->child)
+               mandoc_vmsg(MANDOCERR_ARG_SKIP,
+                   mdoc->parse, n->line, n->pos,
+                   "%s %s", mdoc_macronames[n->tok],
+                   n->child->string);
+}
 
-       /* If not, use "library ``xxxx''. */
+static void
+post_fname(POST_ARGS)
+{
+       const struct mdoc_node  *n;
+       const char              *cp;
+       size_t                   pos;
 
-       sz = strlen(mdoc->last->child->string) +
-               2 + strlen("\\(lqlibrary\\(rq");
-       buf = mandoc_malloc(sz);
-       snprintf(buf, sz, "library \\(lq%s\\(rq", 
-                       mdoc->last->child->string);
-       free(mdoc->last->child->string);
-       mdoc->last->child->string = buf;
-       return(1);
+       n = mdoc->last->child;
+       pos = strcspn(n->string, "()");
+       cp = n->string + pos;
+       if ( ! (cp[0] == '\0' || (cp[0] == '(' && cp[1] == '*')))
+               mandoc_msg(MANDOCERR_FN_PAREN, mdoc->parse,
+                   n->line, n->pos + pos, n->string);
 }
 
-static int
-post_eoln(POST_ARGS)
+static void
+post_fn(POST_ARGS)
 {
 
-       if (mdoc->last->child)
-               mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_ARGSLOST);
-       return(1);
+       post_fname(mdoc);
+       post_fa(mdoc);
 }
 
+static void
+post_fo(POST_ARGS)
+{
 
-static int
+       check_count(mdoc, MDOC_HEAD, CHECK_EQ, 1);
+       bwarn_ge1(mdoc);
+       if (mdoc->last->type == MDOC_HEAD && mdoc->last->nchild)
+               post_fname(mdoc);
+}
+
+static void
+post_fa(POST_ARGS)
+{
+       const struct mdoc_node *n;
+       const char *cp;
+
+       for (n = mdoc->last->child; n != NULL; n = n->next) {
+               for (cp = n->string; *cp != '\0'; cp++) {
+                       /* Ignore callbacks and alterations. */
+                       if (*cp == '(' || *cp == '{')
+                               break;
+                       if (*cp != ',')
+                               continue;
+                       mandoc_msg(MANDOCERR_FA_COMMA, mdoc->parse,
+                           n->line, n->pos + (cp - n->string),
+                           n->string);
+                       break;
+               }
+       }
+}
+
+static void
 post_vt(POST_ARGS)
 {
        const struct mdoc_node *n;
@@ -1110,36 +1029,69 @@ post_vt(POST_ARGS)
         */
 
        if (MDOC_BODY != mdoc->last->type)
-               return(1);
-       
-       for (n = mdoc->last->child; n; n = n->next)
-               if (MDOC_TEXT != n->type) 
-                       mdoc_nmsg(mdoc, n, MANDOCERR_CHILD);
+               return;
 
-       return(1);
+       for (n = mdoc->last->child; n; n = n->next)
+               if (MDOC_TEXT != n->type)
+                       mandoc_msg(MANDOCERR_VT_CHILD, mdoc->parse,
+                           n->line, n->pos, mdoc_macronames[n->tok]);
 }
 
-
-static int
+static void
 post_nm(POST_ARGS)
 {
+       struct mdoc_node        *n;
+
+       n = mdoc->last;
+
+       if (n->last != NULL &&
+           (n->last->tok == MDOC_Pp ||
+            n->last->tok == MDOC_Lp))
+               mdoc_node_relink(mdoc, n->last);
 
        if (NULL != mdoc->meta.name)
-               return(1);
+               return;
 
-       mdoc_deroff(&mdoc->meta.name, mdoc->last);
+       mdoc_deroff(&mdoc->meta.name, n);
 
-       if (NULL == mdoc->meta.name) {
-               mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_NONAME);
-               mdoc->meta.name = mandoc_strdup("UNKNOWN");
-       }
-       return(1);
+       if (NULL == mdoc->meta.name)
+               mandoc_msg(MANDOCERR_NM_NONAME, mdoc->parse,
+                   n->line, n->pos, "Nm");
 }
 
-static int
+static void
+post_nd(POST_ARGS)
+{
+       struct mdoc_node        *n;
+
+       n = mdoc->last;
+
+       if (n->type != MDOC_BODY)
+               return;
+
+       if (n->child == NULL)
+               mandoc_msg(MANDOCERR_ND_EMPTY, mdoc->parse,
+                   n->line, n->pos, "Nd");
+
+       post_hyph(mdoc);
+}
+
+static void
+post_d1(POST_ARGS)
+{
+
+       bwarn_ge1(mdoc);
+       post_hyph(mdoc);
+}
+
+static void
 post_literal(POST_ARGS)
 {
-       
+
+       if (mdoc->last->tok == MDOC_Bd)
+               hwarn_eq0(mdoc);
+       bwarn_ge1(mdoc);
+
        /*
         * The `Dl' (note "el" not "one") and `Bd' macros unset the
         * MDOC_LITERAL flag as they leave.  Note that `Bd' only sets
@@ -1149,11 +1101,9 @@ post_literal(POST_ARGS)
 
        if (MDOC_BODY == mdoc->last->type)
                mdoc->flags &= ~MDOC_LITERAL;
-
-       return(1);
 }
 
-static int
+static void
 post_defaults(POST_ARGS)
 {
        struct mdoc_node *nn;
@@ -1165,81 +1115,63 @@ post_defaults(POST_ARGS)
         */
 
        if (mdoc->last->child)
-               return(1);
-       
+               return;
+
        nn = mdoc->last;
        mdoc->next = MDOC_NEXT_CHILD;
 
        switch (nn->tok) {
-       case (MDOC_Ar):
-               if ( ! mdoc_word_alloc(mdoc, nn->line, nn->pos, "file"))
-                       return(0);
-               if ( ! mdoc_word_alloc(mdoc, nn->line, nn->pos, "..."))
-                       return(0);
-               break;
-       case (MDOC_At):
-               if ( ! mdoc_word_alloc(mdoc, nn->line, nn->pos, "AT&T"))
-                       return(0);
-               if ( ! mdoc_word_alloc(mdoc, nn->line, nn->pos, "UNIX"))
-                       return(0);
+       case MDOC_Ar:
+               mdoc_word_alloc(mdoc, nn->line, nn->pos, "file");
+               mdoc_word_alloc(mdoc, nn->line, nn->pos, "...");
                break;
-       case (MDOC_Li):
-               if ( ! mdoc_word_alloc(mdoc, nn->line, nn->pos, ""))
-                       return(0);
-               break;
-       case (MDOC_Pa):
+       case MDOC_Pa:
                /* FALLTHROUGH */
-       case (MDOC_Mt):
-               if ( ! mdoc_word_alloc(mdoc, nn->line, nn->pos, "~"))
-                       return(0);
+       case MDOC_Mt:
+               mdoc_word_alloc(mdoc, nn->line, nn->pos, "~");
                break;
        default:
                abort();
                /* NOTREACHED */
-       } 
-
+       }
        mdoc->last = nn;
-       return(1);
 }
 
-static int
+static void
 post_at(POST_ARGS)
 {
-       const char       *p, *q;
-       char             *buf;
-       size_t            sz;
+       struct mdoc_node        *n;
+       const char              *std_att;
+       char                    *att;
+
+       n = mdoc->last;
+       if (n->child == NULL) {
+               mdoc->next = MDOC_NEXT_CHILD;
+               mdoc_word_alloc(mdoc, n->line, n->pos, "AT&T UNIX");
+               mdoc->last = n;
+               return;
+       }
 
        /*
         * If we have a child, look it up in the standard keys.  If a
         * key exist, use that instead of the child; if it doesn't,
         * prefix "AT&T UNIX " to the existing data.
         */
-       
-       if (NULL == mdoc->last->child)
-               return(1);
 
-       assert(MDOC_TEXT == mdoc->last->child->type);
-       p = mdoc_a2att(mdoc->last->child->string);
+       n = n->child;
+       assert(MDOC_TEXT == n->type);
+       if (NULL == (std_att = mdoc_a2att(n->string))) {
+               mandoc_vmsg(MANDOCERR_AT_BAD, mdoc->parse,
+                   n->line, n->pos, "At %s", n->string);
+               mandoc_asprintf(&att, "AT&T UNIX %s", n->string);
+       } else
+               att = mandoc_strdup(std_att);
 
-       if (p) {
-               free(mdoc->last->child->string);
-               mdoc->last->child->string = mandoc_strdup(p);
-       } else {
-               mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_BADATT);
-               p = "AT&T UNIX ";
-               q = mdoc->last->child->string;
-               sz = strlen(p) + strlen(q) + 1;
-               buf = mandoc_malloc(sz);
-               strlcpy(buf, p, sz);
-               strlcat(buf, q, sz);
-               free(mdoc->last->child->string);
-               mdoc->last->child->string = buf;
-       }
-
-       return(1);
+       free(n->string);
+       n->string = att;
 }
 
-static int
+static void
 post_an(POST_ARGS)
 {
        struct mdoc_node *np;
@@ -1247,96 +1179,96 @@ post_an(POST_ARGS)
        np = mdoc->last;
        if (AUTH__NONE == np->norm->An.auth) {
                if (0 == np->child)
-                       check_count(mdoc, MDOC_ELEM, CHECK_WARN, CHECK_GT, 0);
+                       check_count(mdoc, MDOC_ELEM, CHECK_GT, 0);
        } else if (np->child)
-               check_count(mdoc, MDOC_ELEM, CHECK_WARN, CHECK_EQ, 0);
+               check_count(mdoc, MDOC_ELEM, CHECK_EQ, 0);
+}
 
-       return(1);
+static void
+post_en(POST_ARGS)
+{
+
+       if (MDOC_BLOCK == mdoc->last->type)
+               mdoc->last->norm->Es = mdoc->last_es;
 }
 
+static void
+post_es(POST_ARGS)
+{
 
-static int
+       mdoc->last_es = mdoc->last;
+}
+
+static void
 post_it(POST_ARGS)
 {
        int               i, cols;
        enum mdoc_list    lt;
-       struct mdoc_node *n, *c;
-       enum mandocerr    er;
-
-       if (MDOC_BLOCK != mdoc->last->type)
-               return(1);
+       struct mdoc_node *nbl, *nit, *nch;
 
-       n = mdoc->last->parent->parent;
-       lt = n->norm->Bl.type;
+       nit = mdoc->last;
+       if (nit->type != MDOC_BLOCK)
+               return;
 
-       if (LIST__NONE == lt) {
-               mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_LISTTYPE);
-               return(1);
-       }
+       nbl = nit->parent->parent;
+       lt = nbl->norm->Bl.type;
 
        switch (lt) {
-       case (LIST_tag):
-               if (mdoc->last->head->child)
-                       break;
-               /* FIXME: give this a dummy value. */
-               mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_NOARGS);
-               break;
-       case (LIST_hang):
+       case LIST_tag:
                /* FALLTHROUGH */
-       case (LIST_ohang):
+       case LIST_hang:
                /* FALLTHROUGH */
-       case (LIST_inset):
+       case LIST_ohang:
                /* FALLTHROUGH */
-       case (LIST_diag):
-               if (NULL == mdoc->last->head->child)
-                       mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_NOARGS);
+       case LIST_inset:
+               /* FALLTHROUGH */
+       case LIST_diag:
+               if (nit->head->child == NULL)
+                       mandoc_vmsg(MANDOCERR_IT_NOHEAD,
+                           mdoc->parse, nit->line, nit->pos,
+                           "Bl -%s It",
+                           mdoc_argnames[nbl->args->argv[0].arg]);
                break;
-       case (LIST_bullet):
+       case LIST_bullet:
                /* FALLTHROUGH */
-       case (LIST_dash):
+       case LIST_dash:
                /* FALLTHROUGH */
-       case (LIST_enum):
+       case LIST_enum:
                /* FALLTHROUGH */
-       case (LIST_hyphen):
-               if (NULL == mdoc->last->body->child)
-                       mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_NOBODY);
+       case LIST_hyphen:
+               if (nit->body == NULL || nit->body->child == NULL)
+                       mandoc_vmsg(MANDOCERR_IT_NOBODY,
+                           mdoc->parse, nit->line, nit->pos,
+                           "Bl -%s It",
+                           mdoc_argnames[nbl->args->argv[0].arg]);
                /* FALLTHROUGH */
-       case (LIST_item):
-               if (mdoc->last->head->child)
-                       mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_ARGSLOST);
+       case LIST_item:
+               if (nit->head->child != NULL)
+                       mandoc_vmsg(MANDOCERR_ARG_SKIP,
+                           mdoc->parse, nit->line, nit->pos,
+                           "It %s", nit->head->child->string);
                break;
-       case (LIST_column):
-               cols = (int)n->norm->Bl.ncols;
-
-               assert(NULL == mdoc->last->head->child);
+       case LIST_column:
+               cols = (int)nbl->norm->Bl.ncols;
 
-               if (NULL == mdoc->last->body->child)
-                       mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_NOBODY);
+               assert(nit->head->child == NULL);
 
-               for (i = 0, c = mdoc->last->child; c; c = c->next)
-                       if (MDOC_BODY == c->type)
+               for (i = 0, nch = nit->child; nch; nch = nch->next)
+                       if (nch->type == MDOC_BODY)
                                i++;
 
-               if (i < cols)
-                       er = MANDOCERR_ARGCOUNT;
-               else if (i == cols || i == cols + 1)
-                       break;
-               else
-                       er = MANDOCERR_SYNTARGCOUNT;
-
-               mandoc_vmsg(er, mdoc->parse, mdoc->last->line, 
-                               mdoc->last->pos, 
-                               "columns == %d (have %d)", cols, i);
-               return(MANDOCERR_ARGCOUNT == er);
-       default:
+               if (i < cols || i > cols + 1)
+                       mandoc_vmsg(MANDOCERR_ARGCOUNT,
+                           mdoc->parse, nit->line, nit->pos,
+                           "columns == %d (have %d)", cols, i);
                break;
+       default:
+               abort();
        }
-
-       return(1);
 }
 
-static int
-post_bl_block(POST_ARGS) 
+static void
+post_bl_block(POST_ARGS)
 {
        struct mdoc_node *n, *ni, *nc;
 
@@ -1350,14 +1282,9 @@ post_bl_block(POST_ARGS)
 
        n = mdoc->last;
 
-       if (LIST_tag == n->norm->Bl.type && 
-                       NULL == n->norm->Bl.width) {
-               if ( ! post_bl_block_tag(mdoc))
-                       return(0);
-               assert(n->norm->Bl.width);
-       } else if (NULL != n->norm->Bl.width) {
-               if ( ! post_bl_block_width(mdoc))
-                       return(0);
+       if (LIST_tag == n->norm->Bl.type &&
+           NULL == n->norm->Bl.width) {
+               post_bl_block_tag(mdoc);
                assert(n->norm->Bl.width);
        }
 
@@ -1367,93 +1294,71 @@ post_bl_block(POST_ARGS)
                nc = ni->body->last;
                while (NULL != nc) {
                        switch (nc->tok) {
-                       case (MDOC_Pp):
+                       case MDOC_Pp:
                                /* FALLTHROUGH */
-                       case (MDOC_Lp):
+                       case MDOC_Lp:
                                /* FALLTHROUGH */
-                       case (MDOC_br):
+                       case MDOC_br:
                                break;
                        default:
                                nc = NULL;
                                continue;
                        }
                        if (NULL == ni->next) {
-                               mdoc_nmsg(mdoc, nc, MANDOCERR_MOVEPAR);
-                               if ( ! mdoc_node_relink(mdoc, nc))
-                                       return(0);
+                               mandoc_msg(MANDOCERR_PAR_MOVE,
+                                   mdoc->parse, nc->line, nc->pos,
+                                   mdoc_macronames[nc->tok]);
+                               mdoc_node_relink(mdoc, nc);
                        } else if (0 == n->norm->Bl.comp &&
                            LIST_column != n->norm->Bl.type) {
-                               mdoc_nmsg(mdoc, nc, MANDOCERR_IGNPAR);
+                               mandoc_vmsg(MANDOCERR_PAR_SKIP,
+                                   mdoc->parse, nc->line, nc->pos,
+                                   "%s before It",
+                                   mdoc_macronames[nc->tok]);
                                mdoc_node_delete(mdoc, nc);
                        } else
                                break;
                        nc = ni->body->last;
                }
        }
-       return(1);
 }
 
-static int
-post_bl_block_width(POST_ARGS)
+/*
+ * If the argument of -offset or -width is a macro,
+ * replace it with the associated default width.
+ */
+void
+rewrite_macro2len(char **arg)
 {
        size_t            width;
-       int               i;
        enum mdoct        tok;
-       struct mdoc_node *n;
-       char              buf[NUMSIZ];
-
-       n = mdoc->last;
-
-       /*
-        * Calculate the real width of a list from the -width string,
-        * which may contain a macro (with a known default width), a
-        * literal string, or a scaling width.
-        *
-        * If the value to -width is a macro, then we re-write it to be
-        * the macro's width as set in share/tmac/mdoc/doc-common.
-        */
 
-       if (0 == strcmp(n->norm->Bl.width, "Ds"))
+       if (*arg == NULL)
+               return;
+       else if ( ! strcmp(*arg, "Ds"))
                width = 6;
-       else if (MDOC_MAX == (tok = mdoc_hash_find(n->norm->Bl.width)))
-               return(1);
-       else if (0 == (width = macro2len(tok)))  {
-               mdoc_nmsg(mdoc, n, MANDOCERR_BADWIDTH);
-               return(1);
-       }
-
-       /* The value already exists: free and reallocate it. */
-
-       assert(n->args);
-
-       for (i = 0; i < (int)n->args->argc; i++) 
-               if (MDOC_Width == n->args->argv[i].arg)
-                       break;
-
-       assert(i < (int)n->args->argc);
-
-       snprintf(buf, NUMSIZ, "%un", (unsigned int)width);
-       free(n->args->argv[i].value[0]);
-       n->args->argv[i].value[0] = mandoc_strdup(buf);
+       else if ((tok = mdoc_hash_find(*arg)) == MDOC_MAX)
+               return;
+       else
+               width = macro2len(tok);
 
-       /* Set our width! */
-       n->norm->Bl.width = n->args->argv[i].value[0];
-       return(1);
+       free(*arg);
+       mandoc_asprintf(arg, "%zun", width);
 }
 
-static int
+static void
 post_bl_block_tag(POST_ARGS)
 {
        struct mdoc_node *n, *nn;
        size_t            sz, ssz;
        int               i;
-       char              buf[NUMSIZ];
+       char              buf[24];
 
        /*
         * Calculate the -width for a `Bl -tag' list if it hasn't been
         * provided.  Uses the first head macro.  NOTE AGAIN: this is
         * ONLY if the -width argument has NOT been provided.  See
-        * post_bl_block_width() for converting the -width string.
+        * rewrite_macro2len() for converting the -width string.
         */
 
        sz = 10;
@@ -1478,11 +1383,11 @@ post_bl_block_tag(POST_ARGS)
                        sz = ssz;
 
                break;
-       } 
+       }
 
        /* Defaults to ten ens. */
 
-       snprintf(buf, NUMSIZ, "%un", (unsigned int)sz);
+       (void)snprintf(buf, sizeof(buf), "%un", (unsigned int)sz);
 
        /*
         * We have to dynamically add this to the macro's argument list.
@@ -1492,8 +1397,8 @@ post_bl_block_tag(POST_ARGS)
        assert(n->args);
        i = (int)(n->args->argc)++;
 
-       n->args->argv = mandoc_realloc(n->args->argv, 
-                       n->args->argc * sizeof(struct mdoc_argv));
+       n->args->argv = mandoc_reallocarray(n->args->argv,
+           n->args->argc, sizeof(struct mdoc_argv));
 
        n->args->argv[i].arg = MDOC_Width;
        n->args->argv[i].line = n->line;
@@ -1504,48 +1409,38 @@ post_bl_block_tag(POST_ARGS)
 
        /* Set our width! */
        n->norm->Bl.width = n->args->argv[i].value[0];
-       return(1);
 }
 
-
-static int
-post_bl_head(POST_ARGS) 
+static void
+post_bl_head(POST_ARGS)
 {
        struct mdoc_node *np, *nn, *nnp;
+       struct mdoc_argv *argv;
        int               i, j;
 
-       if (LIST_column != mdoc->last->norm->Bl.type)
+       if (LIST_column != mdoc->last->norm->Bl.type) {
                /* FIXME: this should be ERROR class... */
-               return(hwarn_eq0(mdoc));
+               hwarn_eq0(mdoc);
+               return;
+       }
 
        /*
-        * Convert old-style lists, where the column width specifiers
+        * Append old-style lists, where the column width specifiers
         * trail as macro parameters, to the new-style ("normal-form")
         * lists where they're argument values following -column.
         */
 
-       /* First, disallow both types and allow normal-form. */
-
-       /* 
-        * TODO: technically, we can accept both and just merge the two
-        * lists, but I'll leave that for another day.
-        */
-
-       if (mdoc->last->norm->Bl.ncols && mdoc->last->nchild) {
-               mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_COLUMNS);
-               return(0);
-       } else if (NULL == mdoc->last->child)
-               return(1);
+       if (mdoc->last->child == NULL)
+               return;
 
        np = mdoc->last->parent;
        assert(np->args);
 
-       for (j = 0; j < (int)np->args->argc; j++) 
+       for (j = 0; j < (int)np->args->argc; j++)
                if (MDOC_Column == np->args->argv[j].arg)
                        break;
 
        assert(j < (int)np->args->argc);
-       assert(0 == np->args->argv[j].sz);
 
        /*
         * Accommodate for new-style groff column syntax.  Shuffle the
@@ -1553,15 +1448,17 @@ post_bl_head(POST_ARGS)
         * column field.  Then, delete the head children.
         */
 
-       np->args->argv[j].sz = (size_t)mdoc->last->nchild;
-       np->args->argv[j].value = mandoc_malloc
-               ((size_t)mdoc->last->nchild * sizeof(char *));
+       argv = np->args->argv + j;
+       i = argv->sz;
+       argv->sz += mdoc->last->nchild;
+       argv->value = mandoc_reallocarray(argv->value,
+           argv->sz, sizeof(char *));
 
-       mdoc->last->norm->Bl.ncols = np->args->argv[j].sz;
-       mdoc->last->norm->Bl.cols = (void *)np->args->argv[j].value;
+       mdoc->last->norm->Bl.ncols = argv->sz;
+       mdoc->last->norm->Bl.cols = (void *)argv->value;
 
-       for (i = 0, nn = mdoc->last->child; nn; i++) {
-               np->args->argv[j].value[i] = nn->string;
+       for (nn = mdoc->last->child; nn; i++) {
+               argv->value[i] = nn->string;
                nn->string = NULL;
                nnp = nn;
                nn = nn->next;
@@ -1570,11 +1467,9 @@ post_bl_head(POST_ARGS)
 
        mdoc->last->nchild = 0;
        mdoc->last->child = NULL;
-
-       return(1);
 }
 
-static int
+static void
 post_bl(POST_ARGS)
 {
        struct mdoc_node        *nparent, *nprev; /* of the Bl block */
@@ -1583,24 +1478,33 @@ post_bl(POST_ARGS)
 
        nbody = mdoc->last;
        switch (nbody->type) {
-       case (MDOC_BLOCK):
-               return(post_bl_block(mdoc));
-       case (MDOC_HEAD):
-               return(post_bl_head(mdoc));
-       case (MDOC_BODY):
+       case MDOC_BLOCK:
+               post_bl_block(mdoc);
+               return;
+       case MDOC_HEAD:
+               post_bl_head(mdoc);
+               return;
+       case MDOC_BODY:
                break;
        default:
-               return(1);
+               return;
        }
 
+       bwarn_ge1(mdoc);
+
        nchild = nbody->child;
        while (NULL != nchild) {
-               if (MDOC_It == nchild->tok || MDOC_Sm == nchild->tok) {
+               if (nchild->tok == MDOC_It ||
+                   (nchild->tok == MDOC_Sm &&
+                    nchild->next != NULL &&
+                    nchild->next->tok == MDOC_It)) {
                        nchild = nchild->next;
                        continue;
                }
 
-               mdoc_nmsg(mdoc, nchild, MANDOCERR_CHILD);
+               mandoc_msg(MANDOCERR_BL_MOVE, mdoc->parse,
+                   nchild->line, nchild->pos,
+                   mdoc_macronames[nchild->tok]);
 
                /*
                 * Move the node out of the Bl block.
@@ -1643,178 +1547,170 @@ post_bl(POST_ARGS)
 
                nchild = nnext;
        }
+}
 
-       return(1);
+static void
+post_bk(POST_ARGS)
+{
+
+       hwarn_eq0(mdoc);
+       bwarn_ge1(mdoc);
 }
 
-static int
-ebool(struct mdoc *mdoc)
+static void
+post_sm(struct mdoc *mdoc)
 {
+       struct mdoc_node        *nch;
+
+       nch = mdoc->last->child;
 
-       if (NULL == mdoc->last->child) {
-               mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_MACROEMPTY);
-               mdoc_node_delete(mdoc, mdoc->last);
-               return(1);
+       if (nch == NULL) {
+               mdoc->flags ^= MDOC_SMOFF;
+               return;
        }
-       check_count(mdoc, MDOC_ELEM, CHECK_WARN, CHECK_EQ, 1);
 
-       assert(MDOC_TEXT == mdoc->last->child->type);
+       assert(nch->type == MDOC_TEXT);
 
-       if (0 == strcmp(mdoc->last->child->string, "on")) {
-               if (MDOC_Sm == mdoc->last->tok)
-                       mdoc->flags &= ~MDOC_SMOFF;
-               return(1);
+       if ( ! strcmp(nch->string, "on")) {
+               mdoc->flags &= ~MDOC_SMOFF;
+               return;
        }
-       if (0 == strcmp(mdoc->last->child->string, "off")) {
-               if (MDOC_Sm == mdoc->last->tok)
-                       mdoc->flags |= MDOC_SMOFF;
-               return(1);
+       if ( ! strcmp(nch->string, "off")) {
+               mdoc->flags |= MDOC_SMOFF;
+               return;
        }
 
-       mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_BADBOOL);
-       return(1);
+       mandoc_vmsg(MANDOCERR_SM_BAD,
+           mdoc->parse, nch->line, nch->pos,
+           "%s %s", mdoc_macronames[mdoc->last->tok], nch->string);
+       mdoc_node_relink(mdoc, nch);
+       return;
 }
 
-static int
+static void
 post_root(POST_ARGS)
 {
-       int               erc;
        struct mdoc_node *n;
 
-       erc = 0;
+       /* Add missing prologue data. */
 
-       /* Check that we have a finished prologue. */
+       if (mdoc->meta.date == NULL)
+               mdoc->meta.date = mdoc->quick ?
+                   mandoc_strdup("") :
+                   mandoc_normdate(mdoc->parse, NULL, 0, 0);
 
-       if ( ! (MDOC_PBODY & mdoc->flags)) {
-               erc++;
-               mdoc_nmsg(mdoc, mdoc->first, MANDOCERR_NODOCPROLOG);
+       if (mdoc->meta.title == NULL) {
+               mandoc_msg(MANDOCERR_DT_NOTITLE,
+                   mdoc->parse, 0, 0, "EOF");
+               mdoc->meta.title = mandoc_strdup("UNTITLED");
        }
 
-       n = mdoc->first;
-       assert(n);
-       
-       /* Check that we begin with a proper `Sh'. */
+       if (mdoc->meta.vol == NULL)
+               mdoc->meta.vol = mandoc_strdup("LOCAL");
 
-       if (NULL == n->child) {
-               erc++;
-               mdoc_nmsg(mdoc, n, MANDOCERR_NODOCBODY);
-       } else if (MDOC_BLOCK != n->child->type || 
-                       MDOC_Sh != n->child->tok) {
-               erc++;
-               /* Can this be lifted?  See rxdebug.1 for example. */
-               mdoc_nmsg(mdoc, n, MANDOCERR_NODOCBODY);
+       if (mdoc->meta.os == NULL) {
+               mandoc_msg(MANDOCERR_OS_MISSING,
+                   mdoc->parse, 0, 0, NULL);
+               mdoc->meta.os = mandoc_strdup("");
        }
 
-       return(erc ? 0 : 1);
+       /* Check that we begin with a proper `Sh'. */
+
+       n = mdoc->first->child;
+       while (n != NULL && mdoc_macros[n->tok].flags & MDOC_PROLOGUE)
+               n = n->next;
+
+       if (n == NULL)
+               mandoc_msg(MANDOCERR_DOC_EMPTY, mdoc->parse, 0, 0, NULL);
+       else if (n->tok != MDOC_Sh)
+               mandoc_msg(MANDOCERR_SEC_BEFORE, mdoc->parse,
+                   n->line, n->pos, mdoc_macronames[n->tok]);
 }
 
-static int
+static void
 post_st(POST_ARGS)
 {
-       struct mdoc_node         *ch;
+       struct mdoc_node         *n, *nch;
        const char               *p;
 
-       if (NULL == (ch = mdoc->last->child)) {
-               mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_MACROEMPTY);
-               mdoc_node_delete(mdoc, mdoc->last);
-               return(1);
+       n = mdoc->last;
+       nch = n->child;
+
+       if (NULL == nch) {
+               mandoc_msg(MANDOCERR_MACRO_EMPTY, mdoc->parse,
+                   n->line, n->pos, mdoc_macronames[n->tok]);
+               mdoc_node_delete(mdoc, n);
+               return;
        }
 
-       assert(MDOC_TEXT == ch->type);
+       assert(MDOC_TEXT == nch->type);
 
-       if (NULL == (p = mdoc_a2st(ch->string))) {
-               mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_BADSTANDARD);
-               mdoc_node_delete(mdoc, mdoc->last);
+       if (NULL == (p = mdoc_a2st(nch->string))) {
+               mandoc_vmsg(MANDOCERR_ST_BAD, mdoc->parse,
+                   nch->line, nch->pos, "St %s", nch->string);
+               mdoc_node_delete(mdoc, n);
        } else {
-               free(ch->string);
-               ch->string = mandoc_strdup(p);
+               free(nch->string);
+               nch->string = mandoc_strdup(p);
        }
-
-       return(1);
 }
 
-static int
+static void
 post_rs(POST_ARGS)
 {
-       struct mdoc_node *nn, *next, *prev;
+       struct mdoc_node *np, *nch, *next, *prev;
        int               i, j;
 
-       switch (mdoc->last->type) {
-       case (MDOC_HEAD):
-               check_count(mdoc, MDOC_HEAD, CHECK_WARN, CHECK_EQ, 0);
-               return(1);
-       case (MDOC_BODY):
-               if (mdoc->last->child)
-                       break;
-               check_count(mdoc, MDOC_BODY, CHECK_WARN, CHECK_GT, 0);
-               return(1);
-       default:
-               return(1);
-       }
-
-       /*
-        * Make sure only certain types of nodes are allowed within the
-        * the `Rs' body.  Delete offending nodes and raise a warning.
-        * Do this before re-ordering for the sake of clarity.
-        */
-
-       next = NULL;
-       for (nn = mdoc->last->child; nn; nn = next) {
-               for (i = 0; i < RSORD_MAX; i++)
-                       if (nn->tok == rsord[i])
-                               break;
+       np = mdoc->last;
 
-               if (i < RSORD_MAX) {
-                       if (MDOC__J == rsord[i] || MDOC__B == rsord[i])
-                               mdoc->last->norm->Rs.quote_T++;
-                       next = nn->next;
-                       continue;
-               }
+       if (np->type != MDOC_BODY)
+               return;
 
-               next = nn->next;
-               mdoc_nmsg(mdoc, nn, MANDOCERR_CHILD);
-               mdoc_node_delete(mdoc, nn);
+       if (np->child == NULL) {
+               mandoc_msg(MANDOCERR_RS_EMPTY, mdoc->parse,
+                   np->line, np->pos, "Rs");
+               return;
        }
 
-       /*
-        * Nothing to sort if only invalid nodes were found
-        * inside the `Rs' body.
-        */
-
-       if (NULL == mdoc->last->child)
-               return(1);
-
        /*
         * The full `Rs' block needs special handling to order the
         * sub-elements according to `rsord'.  Pick through each element
-        * and correctly order it.  This is a insertion sort.
+        * and correctly order it.  This is an insertion sort.
         */
 
        next = NULL;
-       for (nn = mdoc->last->child->next; nn; nn = next) {
-               /* Determine order of `nn'. */
+       for (nch = np->child->next; nch != NULL; nch = next) {
+               /* Determine order number of this child. */
                for (i = 0; i < RSORD_MAX; i++)
-                       if (rsord[i] == nn->tok)
+                       if (rsord[i] == nch->tok)
                                break;
 
-               /* 
-                * Remove `nn' from the chain.  This somewhat
+               if (i == RSORD_MAX) {
+                       mandoc_msg(MANDOCERR_RS_BAD,
+                           mdoc->parse, nch->line, nch->pos,
+                           mdoc_macronames[nch->tok]);
+                       i = -1;
+               } else if (nch->tok == MDOC__J || nch->tok == MDOC__B)
+                       np->norm->Rs.quote_T++;
+
+               /*
+                * Remove this child from the chain.  This somewhat
                 * repeats mdoc_node_unlink(), but since we're
                 * just re-ordering, there's no need for the
                 * full unlink process.
                 */
-               
-               if (NULL != (next = nn->next))
-                       next->prev = nn->prev;
 
-               if (NULL != (prev = nn->prev))
-                       prev->next = nn->next;
+               if ((next = nch->next) != NULL)
+                       next->prev = nch->prev;
+
+               if ((prev = nch->prev) != NULL)
+                       prev->next = nch->next;
 
-               nn->prev = nn->next = NULL;
+               nch->prev = nch->next = NULL;
 
-               /* 
+               /*
                 * Scan back until we reach a node that's
-                * ordered before `nn'.
+                * to be ordered before this child.
                 */
 
                for ( ; prev ; prev = prev->prev) {
@@ -1822,38 +1718,38 @@ post_rs(POST_ARGS)
                        for (j = 0; j < RSORD_MAX; j++)
                                if (rsord[j] == prev->tok)
                                        break;
+                       if (j == RSORD_MAX)
+                               j = -1;
 
                        if (j <= i)
                                break;
                }
 
                /*
-                * Set `nn' back into its correct place in front
-                * of the `prev' node.
+                * Set this child back into its correct place
+                * in front of the `prev' node.
                 */
 
-               nn->prev = prev;
+               nch->prev = prev;
 
-               if (prev) {
-                       if (prev->next)
-                               prev->next->prev = nn;
-                       nn->next = prev->next;
-                       prev->next = nn;
+               if (prev == NULL) {
+                       np->child->prev = nch;
+                       nch->next = np->child;
+                       np->child = nch;
                } else {
-                       mdoc->last->child->prev = nn;
-                       nn->next = mdoc->last->child;
-                       mdoc->last->child = nn;
+                       if (prev->next)
+                               prev->next->prev = nch;
+                       nch->next = prev->next;
+                       prev->next = nch;
                }
        }
-
-       return(1);
 }
 
 /*
  * For some arguments of some macros,
  * convert all breakable hyphens into ASCII_HYPH.
  */
-static int
+static void
 post_hyph(POST_ARGS)
 {
        struct mdoc_node        *n, *nch;
@@ -1861,18 +1757,18 @@ post_hyph(POST_ARGS)
 
        n = mdoc->last;
        switch (n->type) {
-       case (MDOC_HEAD):
+       case MDOC_HEAD:
                if (MDOC_Sh == n->tok || MDOC_Ss == n->tok)
                        break;
-               return(1);
-       case (MDOC_BODY):
+               return;
+       case MDOC_BODY:
                if (MDOC_D1 == n->tok || MDOC_Nd == n->tok)
                        break;
-               return(1);
-       case (MDOC_ELEM):
+               return;
+       case MDOC_ELEM:
                break;
        default:
-               return(1);
+               return;
        }
 
        for (nch = n->child; nch; nch = nch->next) {
@@ -1887,38 +1783,60 @@ post_hyph(POST_ARGS)
                            isalpha((unsigned char)cp[1]))
                                *cp = ASCII_HYPH;
        }
-       return(1);
 }
 
-static int
+static void
+post_hyphtext(POST_ARGS)
+{
+
+       ewarn_ge1(mdoc);
+       post_hyph(mdoc);
+}
+
+static void
 post_ns(POST_ARGS)
 {
 
        if (MDOC_LINE & mdoc->last->flags)
-               mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_IGNNS);
-       return(1);
+               mandoc_msg(MANDOCERR_NS_SKIP, mdoc->parse,
+                   mdoc->last->line, mdoc->last->pos, NULL);
 }
 
-static int
+static void
 post_sh(POST_ARGS)
 {
 
-       if (MDOC_HEAD == mdoc->last->type)
-               return(post_sh_head(mdoc));
-       if (MDOC_BODY == mdoc->last->type)
-               return(post_sh_body(mdoc));
+       post_ignpar(mdoc);
 
-       return(1);
+       switch (mdoc->last->type) {
+       case MDOC_HEAD:
+               post_sh_head(mdoc);
+               break;
+       case MDOC_BODY:
+               switch (mdoc->lastsec)  {
+               case SEC_NAME:
+                       post_sh_name(mdoc);
+                       break;
+               case SEC_SEE_ALSO:
+                       post_sh_see_also(mdoc);
+                       break;
+               case SEC_AUTHORS:
+                       post_sh_authors(mdoc);
+                       break;
+               default:
+                       break;
+               }
+               break;
+       default:
+               break;
+       }
 }
 
-static int
-post_sh_body(POST_ARGS)
+static void
+post_sh_name(POST_ARGS)
 {
        struct mdoc_node *n;
 
-       if (SEC_NAME != mdoc->lastsec)
-               return(1);
-
        /*
         * Warn if the NAME section doesn't contain the `Nm' and `Nd'
         * macros (can have multiple `Nm' and one `Nd').  Note that the
@@ -1926,8 +1844,9 @@ post_sh_body(POST_ARGS)
         */
 
        if (NULL == (n = mdoc->last->child)) {
-               mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_BADNAMESEC);
-               return(1);
+               mandoc_msg(MANDOCERR_NAMESEC_BAD, mdoc->parse,
+                   mdoc->last->line, mdoc->last->pos, "empty");
+               return;
        }
 
        for ( ; n && n->next; n = n->next) {
@@ -1935,21 +1854,104 @@ post_sh_body(POST_ARGS)
                        continue;
                if (MDOC_TEXT == n->type)
                        continue;
-               mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_BADNAMESEC);
+               mandoc_msg(MANDOCERR_NAMESEC_BAD, mdoc->parse,
+                   n->line, n->pos, mdoc_macronames[n->tok]);
        }
 
        assert(n);
        if (MDOC_BLOCK == n->type && MDOC_Nd == n->tok)
-               return(1);
+               return;
 
-       mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_BADNAMESEC);
-       return(1);
+       mandoc_msg(MANDOCERR_NAMESEC_BAD, mdoc->parse,
+           n->line, n->pos, mdoc_macronames[n->tok]);
+}
+
+static void
+post_sh_see_also(POST_ARGS)
+{
+       const struct mdoc_node  *n;
+       const char              *name, *sec;
+       const char              *lastname, *lastsec, *lastpunct;
+       int                      cmp;
+
+       n = mdoc->last->child;
+       lastname = lastsec = lastpunct = NULL;
+       while (n != NULL) {
+               if (n->tok != MDOC_Xr || n->nchild < 2)
+                       break;
+
+               /* Process one .Xr node. */
+
+               name = n->child->string;
+               sec = n->child->next->string;
+               if (lastsec != NULL) {
+                       if (lastpunct[0] != ',' || lastpunct[1] != '\0')
+                               mandoc_vmsg(MANDOCERR_XR_PUNCT,
+                                   mdoc->parse, n->line, n->pos,
+                                   "%s before %s(%s)", lastpunct,
+                                   name, sec);
+                       cmp = strcmp(lastsec, sec);
+                       if (cmp > 0)
+                               mandoc_vmsg(MANDOCERR_XR_ORDER,
+                                   mdoc->parse, n->line, n->pos,
+                                   "%s(%s) after %s(%s)", name,
+                                   sec, lastname, lastsec);
+                       else if (cmp == 0 &&
+                           strcasecmp(lastname, name) > 0)
+                               mandoc_vmsg(MANDOCERR_XR_ORDER,
+                                   mdoc->parse, n->line, n->pos,
+                                   "%s after %s", name, lastname);
+               }
+               lastname = name;
+               lastsec = sec;
+
+               /* Process the following node. */
+
+               n = n->next;
+               if (n == NULL)
+                       break;
+               if (n->tok == MDOC_Xr) {
+                       lastpunct = "none";
+                       continue;
+               }
+               if (n->type != MDOC_TEXT)
+                       break;
+               for (name = n->string; *name != '\0'; name++)
+                       if (isalpha((const unsigned char)*name))
+                               return;
+               lastpunct = n->string;
+               if (n->next == NULL)
+                       mandoc_vmsg(MANDOCERR_XR_PUNCT, mdoc->parse,
+                           n->line, n->pos, "%s after %s(%s)",
+                           lastpunct, lastname, lastsec);
+               n = n->next;
+       }
 }
 
 static int
+child_an(const struct mdoc_node *n)
+{
+
+       for (n = n->child; n != NULL; n = n->next)
+               if ((n->tok == MDOC_An && n->nchild) || child_an(n))
+                       return(1);
+       return(0);
+}
+
+static void
+post_sh_authors(POST_ARGS)
+{
+
+       if ( ! child_an(mdoc->last))
+               mandoc_msg(MANDOCERR_AN_MISSING, mdoc->parse,
+                   mdoc->last->line, mdoc->last->pos, NULL);
+}
+
+static void
 post_sh_head(POST_ARGS)
 {
        struct mdoc_node *n;
+       const char      *goodsec;
        char            *secname;
        enum mdoc_sec    sec;
 
@@ -1968,7 +1970,9 @@ post_sh_head(POST_ARGS)
        /* The NAME should be first. */
 
        if (SEC_NAME != sec && SEC_NONE == mdoc->lastnamed)
-               mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_NAMESECFIRST);
+               mandoc_vmsg(MANDOCERR_NAMESEC_FIRST, mdoc->parse,
+                   mdoc->last->line, mdoc->last->pos,
+                   "Sh %s", secname);
 
        /* The SYNOPSIS gets special attention in other areas. */
 
@@ -2002,7 +2006,7 @@ post_sh_head(POST_ARGS)
 
        if (SEC_CUSTOM == sec) {
                free(secname);
-               return(1);
+               return;
        }
 
        /*
@@ -2011,10 +2015,14 @@ post_sh_head(POST_ARGS)
         */
 
        if (sec == mdoc->lastnamed)
-               mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_SECREP);
+               mandoc_vmsg(MANDOCERR_SEC_REP, mdoc->parse,
+                   mdoc->last->line, mdoc->last->pos,
+                   "Sh %s", secname);
 
        if (sec < mdoc->lastnamed)
-               mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_SECOOO);
+               mandoc_vmsg(MANDOCERR_SEC_ORDER, mdoc->parse,
+                   mdoc->last->line, mdoc->last->pos,
+                   "Sh %s", secname);
 
        /* Mark the last named section. */
 
@@ -2022,68 +2030,83 @@ post_sh_head(POST_ARGS)
 
        /* Check particular section/manual conventions. */
 
-       assert(mdoc->meta.msec);
+       if (mdoc->meta.msec == NULL) {
+               free(secname);
+               return;
+       }
 
+       goodsec = NULL;
        switch (sec) {
-       case (SEC_ERRORS):
+       case SEC_ERRORS:
                if (*mdoc->meta.msec == '4')
                        break;
+               goodsec = "2, 3, 4, 9";
                /* FALLTHROUGH */
-       case (SEC_RETURN_VALUES):
+       case SEC_RETURN_VALUES:
                /* FALLTHROUGH */
-       case (SEC_LIBRARY):
+       case SEC_LIBRARY:
                if (*mdoc->meta.msec == '2')
                        break;
                if (*mdoc->meta.msec == '3')
                        break;
+               if (NULL == goodsec)
+                       goodsec = "2, 3, 9";
                /* FALLTHROUGH */
-       case (SEC_CONTEXT):
+       case SEC_CONTEXT:
                if (*mdoc->meta.msec == '9')
                        break;
-               mandoc_msg(MANDOCERR_SECMSEC, mdoc->parse,
-                   mdoc->last->line, mdoc->last->pos, secname);
+               if (NULL == goodsec)
+                       goodsec = "9";
+               mandoc_vmsg(MANDOCERR_SEC_MSEC, mdoc->parse,
+                   mdoc->last->line, mdoc->last->pos,
+                   "Sh %s for %s only", secname, goodsec);
                break;
        default:
                break;
        }
-
        free(secname);
-       return(1);
 }
 
-static int
+static void
 post_ignpar(POST_ARGS)
 {
        struct mdoc_node *np;
 
+       check_count(mdoc, MDOC_HEAD, CHECK_GT, 0);
+       post_hyph(mdoc);
+
        if (MDOC_BODY != mdoc->last->type)
-               return(1);
+               return;
 
        if (NULL != (np = mdoc->last->child))
                if (MDOC_Pp == np->tok || MDOC_Lp == np->tok) {
-                       mdoc_nmsg(mdoc, np, MANDOCERR_IGNPAR);
+                       mandoc_vmsg(MANDOCERR_PAR_SKIP,
+                           mdoc->parse, np->line, np->pos,
+                           "%s after %s", mdoc_macronames[np->tok],
+                           mdoc_macronames[mdoc->last->tok]);
                        mdoc_node_delete(mdoc, np);
                }
 
        if (NULL != (np = mdoc->last->last))
                if (MDOC_Pp == np->tok || MDOC_Lp == np->tok) {
-                       mdoc_nmsg(mdoc, np, MANDOCERR_IGNPAR);
+                       mandoc_vmsg(MANDOCERR_PAR_SKIP, mdoc->parse,
+                           np->line, np->pos, "%s at the end of %s",
+                           mdoc_macronames[np->tok],
+                           mdoc_macronames[mdoc->last->tok]);
                        mdoc_node_delete(mdoc, np);
                }
-
-       return(1);
 }
 
-static int
+static void
 pre_par(PRE_ARGS)
 {
 
        if (NULL == mdoc->last)
-               return(1);
+               return;
        if (MDOC_ELEM != n->type && MDOC_BLOCK != n->type)
-               return(1);
+               return;
 
-       /* 
+       /*
         * Don't allow prior `Lp' or `Pp' prior to a paragraph-type
         * block:  `Lp', `Pp', or non-compact `Bd' or `Bl'.
         */
@@ -2091,51 +2114,59 @@ pre_par(PRE_ARGS)
        if (MDOC_Pp != mdoc->last->tok &&
            MDOC_Lp != mdoc->last->tok &&
            MDOC_br != mdoc->last->tok)
-               return(1);
+               return;
        if (MDOC_Bl == n->tok && n->norm->Bl.comp)
-               return(1);
+               return;
        if (MDOC_Bd == n->tok && n->norm->Bd.comp)
-               return(1);
+               return;
        if (MDOC_It == n->tok && n->parent->norm->Bl.comp)
-               return(1);
+               return;
 
-       mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_IGNPAR);
+       mandoc_vmsg(MANDOCERR_PAR_SKIP, mdoc->parse,
+           mdoc->last->line, mdoc->last->pos,
+           "%s before %s", mdoc_macronames[mdoc->last->tok],
+           mdoc_macronames[n->tok]);
        mdoc_node_delete(mdoc, mdoc->last);
-       return(1);
 }
 
-static int
+static void
 post_par(POST_ARGS)
 {
+       struct mdoc_node *np;
+
+       if (mdoc->last->tok == MDOC_sp)
+               check_count(mdoc, MDOC_ELEM, CHECK_LT, 2);
+       else
+               check_count(mdoc, MDOC_ELEM, CHECK_EQ, 0);
 
        if (MDOC_ELEM != mdoc->last->type &&
            MDOC_BLOCK != mdoc->last->type)
-               return(1);
+               return;
 
-       if (NULL == mdoc->last->prev) {
-               if (MDOC_Sh != mdoc->last->parent->tok &&
-                   MDOC_Ss != mdoc->last->parent->tok)
-                       return(1);
-       } else {
-               if (MDOC_Pp != mdoc->last->prev->tok &&
-                   MDOC_Lp != mdoc->last->prev->tok &&
-                   (MDOC_br != mdoc->last->tok ||
-                    (MDOC_sp != mdoc->last->prev->tok &&
-                     MDOC_br != mdoc->last->prev->tok)))
-                       return(1);
-       }
+       if (NULL == (np = mdoc->last->prev)) {
+               np = mdoc->last->parent;
+               if (MDOC_Sh != np->tok && MDOC_Ss != np->tok)
+                       return;
+       } else if (MDOC_Pp != np->tok && MDOC_Lp != np->tok &&
+           (MDOC_br != mdoc->last->tok ||
+            (MDOC_sp != np->tok && MDOC_br != np->tok)))
+               return;
 
-       mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_IGNPAR);
+       mandoc_vmsg(MANDOCERR_PAR_SKIP, mdoc->parse,
+           mdoc->last->line, mdoc->last->pos,
+           "%s after %s", mdoc_macronames[mdoc->last->tok],
+           mdoc_macronames[np->tok]);
        mdoc_node_delete(mdoc, mdoc->last);
-       return(1);
 }
 
-static int
+static void
 pre_literal(PRE_ARGS)
 {
 
+       pre_display(mdoc, n);
+
        if (MDOC_BODY != n->type)
-               return(1);
+               return;
 
        /*
         * The `Dl' (note "el" not "one") and `Bd -literal' and `Bd
@@ -2143,10 +2174,10 @@ pre_literal(PRE_ARGS)
         */
 
        switch (n->tok) {
-       case (MDOC_Dl):
+       case MDOC_Dl:
                mdoc->flags |= MDOC_LITERAL;
                break;
-       case (MDOC_Bd):
+       case MDOC_Bd:
                if (DISP_literal == n->norm->Bd.type)
                        mdoc->flags |= MDOC_LITERAL;
                if (DISP_unfilled == n->norm->Bd.type)
@@ -2156,11 +2187,9 @@ pre_literal(PRE_ARGS)
                abort();
                /* NOTREACHED */
        }
-       
-       return(1);
 }
 
-static int
+static void
 post_dd(POST_ARGS)
 {
        struct mdoc_node *n;
@@ -2173,7 +2202,7 @@ post_dd(POST_ARGS)
        if (NULL == n->child || '\0' == n->child->string[0]) {
                mdoc->meta.date = mdoc->quick ? mandoc_strdup("") :
                    mandoc_normdate(mdoc->parse, NULL, n->line, n->pos);
-               return(1);
+               goto out;
        }
 
        datestr = NULL;
@@ -2185,10 +2214,11 @@ post_dd(POST_ARGS)
                    datestr, n->line, n->pos);
                free(datestr);
        }
-       return(1);
+out:
+       mdoc_node_delete(mdoc, n);
 }
 
-static int
+static void
 post_dt(POST_ARGS)
 {
        struct mdoc_node *nn, *n;
@@ -2197,63 +2227,57 @@ post_dt(POST_ARGS)
 
        n = mdoc->last;
 
-       if (mdoc->meta.title)
-               free(mdoc->meta.title);
-       if (mdoc->meta.vol)
-               free(mdoc->meta.vol);
-       if (mdoc->meta.arch)
-               free(mdoc->meta.arch);
+       free(mdoc->meta.title);
+       free(mdoc->meta.msec);
+       free(mdoc->meta.vol);
+       free(mdoc->meta.arch);
 
-       mdoc->meta.title = mdoc->meta.vol = mdoc->meta.arch = NULL;
+       mdoc->meta.title = NULL;
+       mdoc->meta.msec = NULL;
+       mdoc->meta.vol = NULL;
+       mdoc->meta.arch = NULL;
 
-       /* First make all characters uppercase. */
+       /* First check that all characters are uppercase. */
 
        if (NULL != (nn = n->child))
                for (p = nn->string; *p; p++) {
                        if (toupper((unsigned char)*p) == *p)
                                continue;
-
-                       /* 
-                        * FIXME: don't be lazy: have this make all
-                        * characters be uppercase and just warn once.
-                        */
-                       mdoc_nmsg(mdoc, nn, MANDOCERR_UPPERCASE);
+                       mandoc_vmsg(MANDOCERR_TITLE_CASE,
+                           mdoc->parse, nn->line,
+                           nn->pos + (p - nn->string),
+                           "Dt %s", nn->string);
                        break;
                }
 
-       /* Handles: `.Dt' 
-        *   --> title = unknown, volume = local, msec = 0, arch = NULL
-        */
+       /* No argument: msec and arch remain NULL. */
 
        if (NULL == (nn = n->child)) {
-               /* XXX: make these macro values. */
-               /* FIXME: warn about missing values. */
-               mdoc->meta.title = mandoc_strdup("UNKNOWN");
+               mandoc_msg(MANDOCERR_DT_NOTITLE,
+                   mdoc->parse, n->line, n->pos, "Dt");
+               mdoc->meta.title = mandoc_strdup("UNTITLED");
                mdoc->meta.vol = mandoc_strdup("LOCAL");
-               mdoc->meta.msec = mandoc_strdup("1");
-               return(1);
+               goto out;
        }
 
-       /* Handles: `.Dt TITLE' 
-        *   --> title = TITLE, volume = local, msec = 0, arch = NULL
-        */
+       /* One argument: msec and arch remain NULL. */
 
-       mdoc->meta.title = mandoc_strdup
-               ('\0' == nn->string[0] ? "UNKNOWN" : nn->string);
+       mdoc->meta.title = mandoc_strdup(
+           '\0' == nn->string[0] ? "UNTITLED" : nn->string);
 
        if (NULL == (nn = nn->next)) {
-               /* FIXME: warn about missing msec. */
-               /* XXX: make this a macro value. */
+               mandoc_vmsg(MANDOCERR_MSEC_MISSING,
+                   mdoc->parse, n->line, n->pos,
+                   "Dt %s", mdoc->meta.title);
                mdoc->meta.vol = mandoc_strdup("LOCAL");
-               mdoc->meta.msec = mandoc_strdup("1");
-               return(1);
+               goto out;
        }
 
        /* Handles: `.Dt TITLE SEC'
-        *   --> title = TITLE, volume = SEC is msec ? 
-        *           format(msec) : SEC,
-        *       msec = SEC is msec ? atoi(msec) : 0,
-        *       arch = NULL
+        * title = TITLE,
+        * volume = SEC is msec ? format(msec) : SEC,
+        * msec = SEC is msec ? atoi(msec) : 0,
+        * arch = NULL
         */
 
        cp = mandoc_a2msec(nn->string);
@@ -2261,63 +2285,32 @@ post_dt(POST_ARGS)
                mdoc->meta.vol = mandoc_strdup(cp);
                mdoc->meta.msec = mandoc_strdup(nn->string);
        } else {
-               mdoc_nmsg(mdoc, n, MANDOCERR_BADMSEC);
+               mandoc_vmsg(MANDOCERR_MSEC_BAD, mdoc->parse,
+                   nn->line, nn->pos, "Dt ... %s", nn->string);
                mdoc->meta.vol = mandoc_strdup(nn->string);
                mdoc->meta.msec = mandoc_strdup(nn->string);
-       } 
-
-       if (NULL == (nn = nn->next))
-               return(1);
+       }
 
-       /* Handles: `.Dt TITLE SEC VOL'
-        *   --> title = TITLE, volume = VOL is vol ?
-        *       format(VOL) : 
-        *           VOL is arch ? format(arch) : 
-        *               VOL
-        */
+       /* Handle an optional architecture */
 
-       cp = mdoc_a2vol(nn->string);
-       if (cp) {
-               free(mdoc->meta.vol);
-               mdoc->meta.vol = mandoc_strdup(cp);
-       } else {
-               cp = mdoc_a2arch(nn->string);
-               if (NULL == cp) {
-                       mdoc_nmsg(mdoc, nn, MANDOCERR_BADVOLARCH);
-                       free(mdoc->meta.vol);
-                       mdoc->meta.vol = mandoc_strdup(nn->string);
-               } else 
-                       mdoc->meta.arch = mandoc_strdup(cp);
-       }       
+       if ((nn = nn->next) != NULL) {
+               for (p = nn->string; *p; p++)
+                       *p = tolower((unsigned char)*p);
+               mdoc->meta.arch = mandoc_strdup(nn->string);
+       }
 
        /* Ignore any subsequent parameters... */
        /* FIXME: warn about subsequent parameters. */
-
-       return(1);
-}
-
-static int
-post_prol(POST_ARGS)
-{
-       /*
-        * Remove prologue macros from the document after they're
-        * processed.  The final document uses mdoc_meta for these
-        * values and discards the originals.
-        */
-
-       mdoc_node_delete(mdoc, mdoc->last);
-       if (mdoc->meta.title && mdoc->meta.date && mdoc->meta.os)
-               mdoc->flags |= MDOC_PBODY;
-
-       return(1);
+out:
+       mdoc_node_delete(mdoc, n);
 }
 
-static int
+static void
 post_bx(POST_ARGS)
 {
        struct mdoc_node        *n;
 
-       /* 
+       /*
         * Make `Bx's second argument always start with an uppercase
         * letter.  Groff checks if it's an "accepted" term, but we just
         * uppercase blindly.
@@ -2325,13 +2318,10 @@ post_bx(POST_ARGS)
 
        n = mdoc->last->child;
        if (n && NULL != (n = n->next))
-               *n->string = (char)toupper
-                       ((unsigned char)*n->string);
-
-       return(1);
+               *n->string = (char)toupper((unsigned char)*n->string);
 }
 
-static int
+static void
 post_os(POST_ARGS)
 {
 #ifndef OSNAME
@@ -2349,17 +2339,17 @@ post_os(POST_ARGS)
         * 2. the -Ios=foo command line argument, if provided
         * 3. -DOSNAME="\"foo\"", if provided during compilation
         * 4. "sysname release" from uname(3)
-        */
+        */
 
        free(mdoc->meta.os);
        mdoc->meta.os = NULL;
        mdoc_deroff(&mdoc->meta.os, n);
        if (mdoc->meta.os)
-               return(1);
+               goto out;
 
        if (mdoc->defos) {
                mdoc->meta.os = mandoc_strdup(mdoc->defos);
-               return(1);
+               goto out;
        }
 
 #ifdef OSNAME
@@ -2367,52 +2357,51 @@ post_os(POST_ARGS)
 #else /*!OSNAME */
        if (NULL == defbuf) {
                if (-1 == uname(&utsname)) {
-                       mdoc_nmsg(mdoc, n, MANDOCERR_UNAME);
-                        defbuf = mandoc_strdup("UNKNOWN");
-                } else
+                       mandoc_msg(MANDOCERR_OS_UNAME, mdoc->parse,
+                           n->line, n->pos, "Os");
+                       defbuf = mandoc_strdup("UNKNOWN");
+               } else
                        mandoc_asprintf(&defbuf, "%s %s",
                            utsname.sysname, utsname.release);
        }
        mdoc->meta.os = mandoc_strdup(defbuf);
 #endif /*!OSNAME*/
-       return(1);
+
+out:
+       mdoc_node_delete(mdoc, n);
 }
 
-static int
-post_std(POST_ARGS)
+/*
+ * If no argument is provided,
+ * fill in the name of the current manual page.
+ */
+static void
+post_ex(POST_ARGS)
 {
-       struct mdoc_node *nn, *n;
+       struct mdoc_node *n;
 
        n = mdoc->last;
 
-       /*
-        * Macros accepting `-std' as an argument have the name of the
-        * current document (`Nm') filled in as the argument if it's not
-        * provided.
-        */
-
        if (n->child)
-               return(1);
-
-       if (NULL == mdoc->meta.name)
-               return(1);
-       
-       nn = n;
-       mdoc->next = MDOC_NEXT_CHILD;
+               return;
 
-       if ( ! mdoc_word_alloc(mdoc, n->line, n->pos, mdoc->meta.name))
-               return(0);
+       if (mdoc->meta.name == NULL) {
+               mandoc_msg(MANDOCERR_EX_NONAME, mdoc->parse,
+                   n->line, n->pos, "Ex");
+               return;
+       }
 
-       mdoc->last = nn;
-       return(1);
+       mdoc->next = MDOC_NEXT_CHILD;
+       mdoc_word_alloc(mdoc, n->line, n->pos, mdoc->meta.name);
+       mdoc->last = n;
 }
 
-static enum mdoc_sec 
+static enum mdoc_sec
 a2sec(const char *p)
 {
        int              i;
 
-       for (i = 0; i < (int)SEC__MAX; i++) 
+       for (i = 0; i < (int)SEC__MAX; i++)
                if (secnames[i] && 0 == strcmp(p, secnames[i]))
                        return((enum mdoc_sec)i);
 
@@ -2424,87 +2413,87 @@ macro2len(enum mdoct macro)
 {
 
        switch (macro) {
-       case(MDOC_Ad):
+       case MDOC_Ad:
                return(12);
-       case(MDOC_Ao):
+       case MDOC_Ao:
                return(12);
-       case(MDOC_An):
+       case MDOC_An:
                return(12);
-       case(MDOC_Aq):
+       case MDOC_Aq:
                return(12);
-       case(MDOC_Ar):
+       case MDOC_Ar:
                return(12);
-       case(MDOC_Bo):
+       case MDOC_Bo:
                return(12);
-       case(MDOC_Bq):
+       case MDOC_Bq:
                return(12);
-       case(MDOC_Cd):
+       case MDOC_Cd:
                return(12);
-       case(MDOC_Cm):
+       case MDOC_Cm:
                return(10);
-       case(MDOC_Do):
+       case MDOC_Do:
                return(10);
-       case(MDOC_Dq):
+       case MDOC_Dq:
                return(12);
-       case(MDOC_Dv):
+       case MDOC_Dv:
                return(12);
-       case(MDOC_Eo):
+       case MDOC_Eo:
                return(12);
-       case(MDOC_Em):
+       case MDOC_Em:
                return(10);
-       case(MDOC_Er):
+       case MDOC_Er:
                return(17);
-       case(MDOC_Ev):
+       case MDOC_Ev:
                return(15);
-       case(MDOC_Fa):
+       case MDOC_Fa:
                return(12);
-       case(MDOC_Fl):
+       case MDOC_Fl:
                return(10);
-       case(MDOC_Fo):
+       case MDOC_Fo:
                return(16);
-       case(MDOC_Fn):
+       case MDOC_Fn:
                return(16);
-       case(MDOC_Ic):
+       case MDOC_Ic:
                return(10);
-       case(MDOC_Li):
+       case MDOC_Li:
                return(16);
-       case(MDOC_Ms):
+       case MDOC_Ms:
                return(6);
-       case(MDOC_Nm):
+       case MDOC_Nm:
                return(10);
-       case(MDOC_No):
+       case MDOC_No:
                return(12);
-       case(MDOC_Oo):
+       case MDOC_Oo:
                return(10);
-       case(MDOC_Op):
+       case MDOC_Op:
                return(14);
-       case(MDOC_Pa):
+       case MDOC_Pa:
                return(32);
-       case(MDOC_Pf):
+       case MDOC_Pf:
                return(12);
-       case(MDOC_Po):
+       case MDOC_Po:
                return(12);
-       case(MDOC_Pq):
+       case MDOC_Pq:
                return(12);
-       case(MDOC_Ql):
+       case MDOC_Ql:
                return(16);
-       case(MDOC_Qo):
+       case MDOC_Qo:
                return(12);
-       case(MDOC_So):
+       case MDOC_So:
                return(12);
-       case(MDOC_Sq):
+       case MDOC_Sq:
                return(12);
-       case(MDOC_Sy):
+       case MDOC_Sy:
                return(6);
-       case(MDOC_Sx):
+       case MDOC_Sx:
                return(16);
-       case(MDOC_Tn):
+       case MDOC_Tn:
                return(10);
-       case(MDOC_Va):
+       case MDOC_Va:
                return(12);
-       case(MDOC_Vt):
+       case MDOC_Vt:
                return(12);
-       case(MDOC_Xr):
+       case MDOC_Xr:
                return(10);
        default:
                break;