Added Fd section validation.

[mandoc.git] / validate.c

diff --git a/validate.c b/validate.c
index 698413b3124cc8b377d00b016a2b1df4447c0365..d5495d4fd66e7eb8577ed4e4606dfd55c2ae784c 100644 (file)
--- a/validate.c
+++ b/validate.c
@@ -1,4 +1,4 @@
-/* $Id: validate.c,v 1.51 2009/02/22 14:31:08 kristaps Exp $ */
+/* $Id: validate.c,v 1.57 2009/02/24 13:57:17 kristaps Exp $ */

 /*
  * Copyright (c) 2008 Kristaps Dzonsons <kristaps@kth.se>
  *
 /*
  * Copyright (c) 2008 Kristaps Dzonsons <kristaps@kth.se>
  *


@@ -17,6 +17,7 @@
  * PERFORMANCE OF THIS SOFTWARE.
  */
 #include <assert.h>
  * PERFORMANCE OF THIS SOFTWARE.
  */
 #include <assert.h>

+#include <ctype.h>

 #include <stdlib.h>
 
 #include "private.h"
 #include <stdlib.h>
 
 #include "private.h"


@@ -29,15 +30,15 @@
  * the BLOCK case, this is the HEAD, BODY, TAIL and so on.
  */
 
  * the BLOCK case, this is the HEAD, BODY, TAIL and so on.
  */
 

-typedef        int     (*v_pre)(struct mdoc *, struct mdoc_node *);
-typedef        int     (*v_post)(struct mdoc *);
+#define        PRE_ARGS        struct mdoc *mdoc, const struct mdoc_node *n
+#define        POST_ARGS       struct mdoc *mdoc
+
+typedef        int     (*v_pre)(PRE_ARGS);
+typedef        int     (*v_post)(POST_ARGS);

 
 /* FIXME: some sections should only occur in specific msecs. */
 /* FIXME: ignoring Pp. */
 
 /* FIXME: some sections should only occur in specific msecs. */
 /* FIXME: ignoring Pp. */

-/* FIXME: .Ef arguments */

 /* FIXME: math symbols. */
 /* FIXME: math symbols. */

-/* FIXME: valid character-escape checks. */
-/* FIXME: .Fd only in synopsis section. */

 
 struct valids {
        v_pre   *pre;
 
 struct valids {
        v_pre   *pre;


@@ -46,11 +47,13 @@ struct      valids {
 
 /* Utility checks. */
 
 
 /* Utility checks. */
 

-static int     check_parent(struct mdoc *, struct mdoc_node *, 
-                       int, enum mdoc_type);
-static int     check_msec(struct mdoc *, struct mdoc_node *, 
-                       int, enum mdoc_msec *);
-static int     check_stdarg(struct mdoc *, struct mdoc_node *);
+static int     check_parent(PRE_ARGS, int, enum mdoc_type);
+static int     check_msec(PRE_ARGS, int, enum mdoc_msec *);
+static int     check_stdarg(PRE_ARGS);
+
+static int     check_text(struct mdoc *, 
+                       size_t, size_t, const char *);
+

 static int     err_child_lt(struct mdoc *, const char *, int);
 static int     err_child_gt(struct mdoc *, const char *, int);
 static int     warn_child_gt(struct mdoc *, const char *, int);
 static int     err_child_lt(struct mdoc *, const char *, int);
 static int     err_child_gt(struct mdoc *, const char *, int);
 static int     warn_child_gt(struct mdoc *, const char *, int);


@@ -67,49 +70,51 @@ static      inline int err_count(struct mdoc *, const char *,
 
 /* Specific pre-child-parse routines. */
 
 
 /* Specific pre-child-parse routines. */
 

-static int     pre_display(struct mdoc *, struct mdoc_node *);
-static int     pre_sh(struct mdoc *, struct mdoc_node *);
-static int     pre_ss(struct mdoc *, struct mdoc_node *);
-static int     pre_bd(struct mdoc *, struct mdoc_node *);
-static int     pre_bl(struct mdoc *, struct mdoc_node *);
-static int     pre_it(struct mdoc *, struct mdoc_node *);
-static int     pre_cd(struct mdoc *, struct mdoc_node *);
-static int     pre_er(struct mdoc *, struct mdoc_node *);
-static int     pre_ex(struct mdoc *, struct mdoc_node *);
-static int     pre_rv(struct mdoc *, struct mdoc_node *);
-static int     pre_an(struct mdoc *, struct mdoc_node *);
-static int     pre_st(struct mdoc *, struct mdoc_node *);
-static int     pre_prologue(struct mdoc *, struct mdoc_node *);
-static int     pre_prologue(struct mdoc *, struct mdoc_node *);
-static int     pre_prologue(struct mdoc *, struct mdoc_node *);
+static int     pre_display(PRE_ARGS);
+static int     pre_sh(PRE_ARGS);
+static int     pre_ss(PRE_ARGS);
+static int     pre_bd(PRE_ARGS);
+static int     pre_bl(PRE_ARGS);
+static int     pre_it(PRE_ARGS);
+static int     pre_cd(PRE_ARGS);
+static int     pre_er(PRE_ARGS);
+static int     pre_ex(PRE_ARGS);
+static int     pre_rv(PRE_ARGS);
+static int     pre_an(PRE_ARGS);
+static int     pre_st(PRE_ARGS);
+static int     pre_prologue(PRE_ARGS);
+static int     pre_prologue(PRE_ARGS);
+static int     pre_prologue(PRE_ARGS);

 
 /* Specific post-child-parse routines. */
 
 
 /* Specific post-child-parse routines. */
 

-static int     herr_ge1(struct mdoc *);
-static int     herr_le1(struct mdoc *);
-static int     herr_eq0(struct mdoc *);
-static int     eerr_eq0(struct mdoc *);
-static int     eerr_le1(struct mdoc *);
-static int     eerr_le2(struct mdoc *);
-static int     eerr_eq1(struct mdoc *);
-static int     eerr_ge1(struct mdoc *);
-static int     ewarn_eq0(struct mdoc *);
-static int     ewarn_eq1(struct mdoc *);
-static int     bwarn_ge1(struct mdoc *);
-static int     ewarn_ge1(struct mdoc *);
-static int     ebool(struct mdoc *);
-static int     post_sh(struct mdoc *);
-static int     post_sh_body(struct mdoc *);
-static int     post_sh_head(struct mdoc *);
-static int     post_bl(struct mdoc *);
-static int     post_it(struct mdoc *);
-static int     post_ex(struct mdoc *);
-static int     post_an(struct mdoc *);
-static int     post_at(struct mdoc *);
-static int     post_xr(struct mdoc *);
-static int     post_nm(struct mdoc *);
-static int     post_bf(struct mdoc *);
-static int     post_root(struct mdoc *);
+static int     herr_ge1(POST_ARGS);
+static int     herr_le1(POST_ARGS);
+static int     herr_eq0(POST_ARGS);
+static int     eerr_eq0(POST_ARGS);
+static int     eerr_le1(POST_ARGS);
+static int     eerr_le2(POST_ARGS);
+static int     eerr_eq1(POST_ARGS);
+static int     eerr_ge1(POST_ARGS);
+static int     ewarn_eq0(POST_ARGS);
+static int     ewarn_eq1(POST_ARGS);
+static int     bwarn_ge1(POST_ARGS);
+static int     ewarn_ge1(POST_ARGS);
+static int     ebool(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_fd(POST_ARGS);
+static int     post_bl(POST_ARGS);
+static int     post_it(POST_ARGS);
+static int     post_ex(POST_ARGS);
+static int     post_an(POST_ARGS);
+static int     post_at(POST_ARGS);
+static int     post_xr(POST_ARGS);
+static int     post_nm(POST_ARGS);
+static int     post_bf(POST_ARGS);
+static int     post_root(POST_ARGS);

 
 /* Collections of pre-child-parse routines. */
 
 
 /* Collections of pre-child-parse routines. */
 


@@ -140,6 +145,7 @@ static      v_post  posts_bl[] = { herr_eq0, bwarn_ge1, post_bl, NULL };
 static v_post  posts_it[] = { post_it, NULL };
 static v_post  posts_in[] = { ewarn_eq1, NULL };
 static v_post  posts_ss[] = { herr_ge1, NULL };
 static v_post  posts_it[] = { post_it, NULL };
 static v_post  posts_in[] = { ewarn_eq1, NULL };
 static v_post  posts_ss[] = { herr_ge1, NULL };

+static v_post  posts_pf[] = { eerr_eq1, NULL };

 static v_post  posts_pp[] = { ewarn_eq0, NULL };
 static v_post  posts_ex[] = { eerr_le1, post_ex, NULL };
 static v_post  posts_an[] = { post_an, NULL };
 static v_post  posts_pp[] = { ewarn_eq0, NULL };
 static v_post  posts_ex[] = { eerr_le1, post_ex, NULL };
 static v_post  posts_an[] = { post_an, NULL };


@@ -150,6 +156,7 @@ static      v_post  posts_bf[] = { herr_le1, post_bf, NULL };
 static v_post  posts_rs[] = { herr_eq0, bwarn_ge1, NULL };
 static v_post  posts_fo[] = { bwarn_ge1, NULL };
 static v_post  posts_bk[] = { herr_eq0, bwarn_ge1, NULL };
 static v_post  posts_rs[] = { herr_eq0, bwarn_ge1, NULL };
 static v_post  posts_fo[] = { bwarn_ge1, NULL };
 static v_post  posts_bk[] = { herr_eq0, bwarn_ge1, NULL };

+static v_post  posts_fd[] = { ewarn_ge1, post_fd, NULL };

 
 /* Per-macro pre- and post-child-check routine collections. */
 
 
 /* Per-macro pre- and post-child-check routine collections. */
 


@@ -178,7 +185,7 @@ const       struct valids mdoc_valids[MDOC_MAX] = {
        { NULL, posts_text },                   /* Ev */ 
        { pres_ex, posts_ex },                  /* Ex */ 
        { NULL, posts_text },                   /* Fa */ 
        { NULL, posts_text },                   /* Ev */ 
        { pres_ex, posts_ex },                  /* Ex */ 
        { NULL, posts_text },                   /* Fa */ 

-       { NULL, posts_wtext },                  /* Fd */
+       { NULL, posts_fd },                     /* Fd */

        { NULL, NULL },                         /* Fl */
        { NULL, posts_text },                   /* Fn */ 
        { NULL, posts_wtext },                  /* Ft */ 
        { NULL, NULL },                         /* Fl */
        { NULL, posts_text },                   /* Fn */ 
        { NULL, posts_wtext },                  /* Ft */ 


@@ -231,7 +238,7 @@ const       struct valids mdoc_valids[MDOC_MAX] = {
        { NULL, NULL },                         /* Nx */
        { NULL, NULL },                         /* Ox */
        { NULL, NULL },                         /* Pc */
        { NULL, NULL },                         /* Nx */
        { NULL, NULL },                         /* Ox */
        { NULL, NULL },                         /* Pc */

-       { NULL, NULL },                         /* Pf */
+       { NULL, posts_pf },                     /* Pf */

        { NULL, NULL },                         /* Po */
        { NULL, posts_wline },                  /* Pq */
        { NULL, NULL },                         /* Qc */
        { NULL, NULL },                         /* Po */
        { NULL, posts_wline },                  /* Pq */
        { NULL, NULL },                         /* Qc */


@@ -263,13 +270,93 @@ const     struct valids mdoc_valids[MDOC_MAX] = {
 };
 
 
 };
 
 

+int
+mdoc_valid_pre(struct mdoc *mdoc, 
+               const struct mdoc_node *node)
+{
+       v_pre           *p;
+       struct mdoc_arg *argv;
+       size_t           argc, i, j, line, pos;
+       const char      *tp;
+
+       if (MDOC_TEXT == node->type) {
+               tp = node->data.text.string;
+               line = node->line;
+               pos = node->pos;
+               return(check_text(mdoc, line, pos, tp));
+       }
+
+       if (MDOC_BLOCK == node->type || MDOC_ELEM == node->type) {
+               argv = MDOC_BLOCK == node->type ?
+                       node->data.block.argv :
+                       node->data.elem.argv;
+               argc = MDOC_BLOCK == node->type ?
+                       node->data.block.argc :
+                       node->data.elem.argc;
+
+               for (i = 0; i < argc; i++) {
+                       if (0 == argv[i].sz)
+                               continue;
+                       for (j = 0; j < argv[i].sz; j++) {
+                               tp = argv[i].value[j];
+                               line = argv[i].line;
+                               pos = argv[i].pos;
+                               if ( ! check_text(mdoc, line, pos, tp))
+                                       return(0);
+                       }
+               }
+       }
+
+       if (NULL == mdoc_valids[node->tok].pre)
+               return(1);
+       for (p = mdoc_valids[node->tok].pre; *p; p++)
+               if ( ! (*p)(mdoc, node)) 
+                       return(0);
+       return(1);
+}
+
+
+int
+mdoc_valid_post(struct mdoc *mdoc)
+{
+       v_post          *p;
+
+       /*
+        * This check occurs after the macro's children have been filled
+        * in: postfix validation.  Since this happens when we're
+        * rewinding the scope tree, it's possible to have multiple
+        * invocations (as by design, for now), we set bit MDOC_VALID to
+        * indicate that we've validated.
+        */
+
+       if (MDOC_VALID & mdoc->last->flags)
+               return(1);
+       mdoc->last->flags |= MDOC_VALID;
+
+       if (MDOC_TEXT == mdoc->last->type)
+               return(1);
+       if (MDOC_ROOT == mdoc->last->type)
+               return(post_root(mdoc));
+
+       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);
+
+       return(1);
+}
+
+
+

 static inline int
 warn_count(struct mdoc *m, const char *k, 
                int want, const char *v, int has)
 {
 
 static inline int
 warn_count(struct mdoc *m, const char *k, 
                int want, const char *v, int has)
 {
 

-       return(mdoc_warn(m, WARN_SYNTAX, "suggests %s %d %s "
-                               "(has %d)", v, want, k, has));
+       return(mdoc_warn(m, WARN_SYNTAX, 
+                               "suggests %s %d %s (has %d)", 
+                               v, want, k, has));

 }
 
 
 }
 
 


@@ -291,260 +378,179 @@ count_child(struct mdoc *mdoc)
 
        for (i = 0, n = mdoc->last->child; n; n = n->next, i++)
                /* Do nothing */ ;
 
        for (i = 0, n = mdoc->last->child; n; n = n->next, i++)
                /* Do nothing */ ;

+

        return(i);
 }
 
 
        return(i);
 }
 
 

-static int
-warn_child_gt(struct mdoc *mdoc, const char *p, int sz)
-{
-       int               i;
+/*
+ * Build these up with macros because they're basically the same check
+ * for different inequalities.  Yes, this could be done with functions,
+ * but this is reasonable for now.
+ */

 
 

-       if ((i = count_child(mdoc)) > sz)
-               return(1);
-       return(warn_count(mdoc, ">", sz, p, i));
+#define CHECK_CHILD_DEFN(lvl, name, ineq)                      \
+static int                                                     \
+lvl##_child_##name(struct mdoc *mdoc, const char *p, int sz)   \
+{                                                              \
+       int i;                                                  \
+       if ((i = count_child(mdoc)) ineq sz)                    \
+               return(1);                                      \
+       return(lvl##_count(mdoc, #ineq, sz, p, i));             \

 }
 
 }
 

-
-static int
-err_child_gt(struct mdoc *mdoc, const char *p, int sz)
-{
-       int               i;
-
-       if ((i = count_child(mdoc)) > sz)
-               return(1);
-       return(err_count(mdoc, ">", sz, p, i));
+#define CHECK_BODY_DEFN(name, lvl, func, num)                  \
+static int                                                     \
+b##lvl##_##name(POST_ARGS)                                     \
+{                                                              \
+       if (MDOC_BODY != mdoc->last->type)                      \
+               return(1);                                      \
+       return(func(mdoc, "multiline parameters", (num)));      \

 }
 
 }
 

-
-static int
-warn_child_eq(struct mdoc *mdoc, const char *p, int sz)
-{
-       int               i;
-
-       if ((i = count_child(mdoc)) == sz)
-               return(1);
-       return(warn_count(mdoc, "==", sz, p, i));
+#define CHECK_ELEM_DEFN(name, lvl, func, num)                  \
+static int                                                     \
+e##lvl##_##name(POST_ARGS)                                     \
+{                                                              \
+       assert(MDOC_ELEM == mdoc->last->type);                  \
+       return(func(mdoc, "line parameters", (num)));           \

 }
 
 }
 

-
-static int
-err_child_eq(struct mdoc *mdoc, const char *p, int sz)
-{
-       int               i;
-
-       if ((i = count_child(mdoc)) == sz)
-               return(1);
-       return(err_count(mdoc, "==", sz, p, i));
+#define CHECK_HEAD_DEFN(name, lvl, func, num)                  \
+static int                                                     \
+h##lvl##_##name(POST_ARGS)                                     \
+{                                                              \
+       if (MDOC_HEAD != mdoc->last->type)                      \
+               return(1);                                      \
+       return(func(mdoc, "multiline parameters", (num)));      \

 }
 
 
 }
 
 

-static int
-err_child_lt(struct mdoc *mdoc, const char *p, int sz)
-{
-       int               i;
-
-       if ((i = count_child(mdoc)) < sz)
-               return(1);
-       return(err_count(mdoc, "<", sz, p, i));
-}
+CHECK_CHILD_DEFN(warn, gt, >)                  /* warn_child_gt() */
+CHECK_CHILD_DEFN(err, gt, >)                   /* err_child_gt() */
+CHECK_CHILD_DEFN(warn, eq, ==)                 /* warn_child_eq() */
+CHECK_CHILD_DEFN(err, eq, ==)                  /* err_child_eq() */
+CHECK_CHILD_DEFN(err, lt, <)                   /* err_child_lt() */
+CHECK_BODY_DEFN(ge1, warn, warn_child_gt, 0)   /* bwarn_ge1() */
+CHECK_ELEM_DEFN(eq1, warn, warn_child_eq, 1)   /* ewarn_eq1() */
+CHECK_ELEM_DEFN(eq0, warn, warn_child_eq, 0)   /* ewarn_eq0() */
+CHECK_ELEM_DEFN(ge1, warn, warn_child_gt, 0)   /* ewarn_gt1() */
+CHECK_ELEM_DEFN(eq1, err, err_child_eq, 1)     /* eerr_eq1() */
+CHECK_ELEM_DEFN(le2, err, err_child_lt, 3)     /* eerr_le2() */
+CHECK_ELEM_DEFN(le1, err, err_child_lt, 2)     /* eerr_le1() */
+CHECK_ELEM_DEFN(eq0, err, err_child_eq, 0)     /* eerr_eq0() */
+CHECK_ELEM_DEFN(ge1, err, err_child_gt, 0)     /* eerr_ge1() */
+CHECK_HEAD_DEFN(eq0, err, err_child_eq, 0)     /* herr_eq0() */
+CHECK_HEAD_DEFN(le1, err, err_child_lt, 2)     /* herr_le1() */
+CHECK_HEAD_DEFN(ge1, err, err_child_gt, 0)     /* herr_ge1() */

 
 
 static int
 
 
 static int

-check_stdarg(struct mdoc *mdoc, struct mdoc_node *node)
+check_stdarg(PRE_ARGS)

 {
 
 {
 

-       if (MDOC_Std == node->data.elem.argv[0].arg && 
-                       1 == node->data.elem.argc)
+       if (MDOC_Std == n->data.elem.argv[0].arg && 
+                       1 == n->data.elem.argc)

                return(1);
 
                return(1);
 

-       return(mdoc_nwarn(mdoc, node, WARN_COMPAT, 
-                               "macro suggests single `%s' argument",
-                               mdoc_argnames[MDOC_Std]));
+       return(mdoc_nwarn(mdoc, n, WARN_COMPAT, 
+                               "one argument suggested"));

 }
 
 
 static int
 }
 
 
 static int

-check_msec(struct mdoc *mdoc, struct mdoc_node *node, 
-               int sz, enum mdoc_msec *msecs)
+check_msec(PRE_ARGS, int sz, enum mdoc_msec *msecs)

 {
        int              i;
 
        for (i = 0; i < sz; i++)
                if (msecs[i] == mdoc->meta.msec)
                        return(1);
 {
        int              i;
 
        for (i = 0; i < sz; i++)
                if (msecs[i] == mdoc->meta.msec)
                        return(1);

-       return(mdoc_nwarn(mdoc, node, WARN_COMPAT, "macro not "
-                               "appropriate for manual section"));
-}
-
-
-static int
-check_parent(struct mdoc *mdoc, struct mdoc_node *n, 
-               int tok, enum mdoc_type t)
-{
-
-       assert(n->parent);
-       if ((MDOC_ROOT == t || tok == n->parent->tok) &&
-                       (t == n->parent->type))
-               return(1);
-
-       return(mdoc_nerr(mdoc, n, "require parent %s (have %s)", 
-                       MDOC_ROOT == t ? "<root>" :
-                       mdoc_macronames[tok],
-                       MDOC_ROOT == n->parent->type ? "<root>" :
-                       mdoc_macronames[n->parent->type]));
-}
-
-
-static int
-bwarn_ge1(struct mdoc *mdoc)
-{
-
-       if (MDOC_BODY != mdoc->last->type)
-               return(1);
-       return(warn_child_gt(mdoc, "multi-line parameters", 0));
-}
-
-
-static int
-ewarn_eq1(struct mdoc *mdoc)
-{
-
-       assert(MDOC_ELEM == mdoc->last->type);
-       return(warn_child_eq(mdoc, "line parameters", 1));
-}
-
-
-static int
-ewarn_eq0(struct mdoc *mdoc)
-{
-
-       assert(MDOC_ELEM == mdoc->last->type);
-       return(warn_child_eq(mdoc, "line parameters", 0));
-}
-
-
-static int
-ewarn_ge1(struct mdoc *mdoc)
-{
-
-       assert(MDOC_ELEM == mdoc->last->type);
-       return(warn_child_gt(mdoc, "line parameters", 0));
-}
-
-
-static int
-eerr_eq1(struct mdoc *mdoc)
-{
-
-       assert(MDOC_ELEM == mdoc->last->type);
-       return(err_child_eq(mdoc, "line parameters", 1));
-}
-
-
-static int
-eerr_le2(struct mdoc *mdoc)
-{
-
-       assert(MDOC_ELEM == mdoc->last->type);
-       return(err_child_lt(mdoc, "line parameters", 3));
+       return(mdoc_nwarn(mdoc, n, WARN_COMPAT, 
+                               "invalid manual section"));

 }
 
 
 static int
 }
 
 
 static int

-eerr_le1(struct mdoc *mdoc)
+check_text(struct mdoc *mdoc, size_t line, size_t pos, const char *p)

 {
 {

+       size_t           c;

 
 

-       assert(MDOC_ELEM == mdoc->last->type);
-       return(err_child_lt(mdoc, "line parameters", 2));
-}
-
-
-static int
-eerr_eq0(struct mdoc *mdoc)
-{
+       for ( ; *p; p++) {
+               if ( ! isprint(*p) && '\t' != *p)
+                       return(mdoc_perr(mdoc, line, pos,
+                                       "invalid characters"));
+               if ('\\' != *p)
+                       continue;
+               if ((c = mdoc_isescape(p))) {
+                       p += (c - 1);
+                       continue;
+               }
+               return(mdoc_perr(mdoc, line, pos,
+                                       "invalid escape sequence"));
+       }

 
 

-       assert(MDOC_ELEM == mdoc->last->type);
-       return(err_child_eq(mdoc, "line parameters", 0));
+       return(1);

 }
 
 
 }
 
 

-static int
-eerr_ge1(struct mdoc *mdoc)
-{
-
-       assert(MDOC_ELEM == mdoc->last->type);
-       return(err_child_gt(mdoc, "line parameters", 0));
-}

 
 
 static int
 
 
 static int

-herr_eq0(struct mdoc *mdoc)
+check_parent(PRE_ARGS, int tok, enum mdoc_type t)

 {
 
 {
 

-       if (MDOC_HEAD != mdoc->last->type)
+       assert(n->parent);
+       if ((MDOC_ROOT == t || tok == n->parent->tok) &&
+                       (t == n->parent->type))

                return(1);
                return(1);

-       return(err_child_eq(mdoc, "line parameters", 0));
-}

 
 

-
-static int
-herr_le1(struct mdoc *mdoc)
-{
-       if (MDOC_HEAD != mdoc->last->type)
-               return(1);
-       return(err_child_lt(mdoc, "line parameters", 2));
+       return(mdoc_nerr(mdoc, n, "require parent %s",
+               MDOC_ROOT == t ? "<root>" : mdoc_macronames[tok]));

 }
 
 
 }
 
 

-static int
-herr_ge1(struct mdoc *mdoc)
-{
-
-       if (MDOC_HEAD != mdoc->last->type)
-               return(1);
-       return(err_child_gt(mdoc, "line parameters", 0));
-}
-

 
 static int
 
 static int

-pre_display(struct mdoc *mdoc, struct mdoc_node *node)
+pre_display(PRE_ARGS)

 {
 {

-       struct mdoc_node *n;
+       struct mdoc_node *node;

 
 

-       if (MDOC_BLOCK != node->type)
+       /* Display elements (`Bd', `D1'...) cannot be nested. */
+
+       if (MDOC_BLOCK != n->type)

                return(1);
 
                return(1);
 

-       assert(mdoc->last);

        /* LINTED */
        /* LINTED */

-       for (n = mdoc->last->parent; n; n = n->parent) 
-               if (MDOC_BLOCK == n->type)
-                       if (MDOC_Bd == n->tok)
+       for (node = mdoc->last->parent; node; node = node->parent) 
+               if (MDOC_BLOCK == node->type)
+                       if (MDOC_Bd == node->tok)

                                break;
                                break;

-       if (NULL == n)
+       if (NULL == node)

                return(1);
                return(1);

-       return(mdoc_nerr(mdoc, node, "displays may not be nested"));
+
+       return(mdoc_nerr(mdoc, n, "displays may not be nested"));

 }
 
 
 static int
 }
 
 
 static int

-pre_bl(struct mdoc *mdoc, struct mdoc_node *node)
+pre_bl(PRE_ARGS)

 {
 {

-       int              type, err;
+       int              type, err, i;

        struct mdoc_arg *argv;
        struct mdoc_arg *argv;

-       size_t           i, argc;
+       size_t           argc;

 
 

-       if (MDOC_BLOCK != node->type)
+       if (MDOC_BLOCK != n->type)

                return(1);
                return(1);

-       assert(MDOC_Bl == node->tok);

 
 

-       argv = NULL;
-       argc = node->data.block.argc; 
+       argc = n->data.block.argc; 
+
+       /* Make sure that only one type of list is specified.  */

 
        /* LINTED */
 
        /* LINTED */

-       for (i = type = err = 0; i < argc; i++) {
-               argv = &node->data.block.argv[(int)i];
-               assert(argv);
+       for (i = 0, type = err = 0; i < (int)argc; i++) {
+               argv = &n->data.block.argv[i];
+

                switch (argv->arg) {
                case (MDOC_Bullet):
                        /* FALLTHROUGH */
                switch (argv->arg) {
                case (MDOC_Bullet):
                        /* FALLTHROUGH */


@@ -567,42 +573,39 @@ pre_bl(struct mdoc *mdoc, struct mdoc_node *node)
                case (MDOC_Inset):
                        /* FALLTHROUGH */
                case (MDOC_Column):
                case (MDOC_Inset):
                        /* FALLTHROUGH */
                case (MDOC_Column):

-                       if (type)
-                               err++;
-                       type++;
-                       break;
+                       if (0 == type++)
+                               break;
+                       return(mdoc_perr(mdoc, argv->line, argv->pos, 
+                                       "multiple types specified"));

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

-       if (0 == type)
-               return(mdoc_err(mdoc, "no list type specified"));
-       if (0 == err)
+
+       if (type)

                return(1);
                return(1);

-       assert(argv);
-       return(mdoc_perr(mdoc, argv->line, 
-                       argv->pos, "only one list type possible"));
+       return(mdoc_err(mdoc, "no type specified"));

 }
 
 
 static int
 }
 
 
 static int

-pre_bd(struct mdoc *mdoc, struct mdoc_node *node)
+pre_bd(PRE_ARGS)

 {
 {

-       int              type, err;
+       int              type, err, i;

        struct mdoc_arg *argv;
        struct mdoc_arg *argv;

-       size_t           i, argc;
+       size_t           argc;

 
 

-       if (MDOC_BLOCK != node->type)
+       if (MDOC_BLOCK != n->type)

                return(1);
                return(1);

-       assert(MDOC_Bd == node->tok);

 
 

-       argv = NULL;
-       argc = node->data.block.argc;
+       argc = n->data.block.argc;
+
+       /* Make sure that only one type of display is specified.  */

 
        /* LINTED */
 
        /* LINTED */

-       for (err = i = type = 0; 0 == err && i < argc; i++) {
-               argv = &node->data.block.argv[(int)i];
-               assert(argv);
+       for (i = 0, err = type = 0; ! err && i < (int)argc; i++) {
+               argv = &n->data.block.argv[i];
+

                switch (argv->arg) {
                case (MDOC_Ragged):
                        /* FALLTHROUGH */
                switch (argv->arg) {
                case (MDOC_Ragged):
                        /* FALLTHROUGH */


@@ -613,157 +616,136 @@ pre_bd(struct mdoc *mdoc, struct mdoc_node *node)
                case (MDOC_Literal):
                        /* FALLTHROUGH */
                case (MDOC_File):
                case (MDOC_Literal):
                        /* FALLTHROUGH */
                case (MDOC_File):

-                       if (type)
-                               err++;
-                       type++;
-                       break;
+                       if (0 == type++) 
+                               break;
+                       return(mdoc_perr(mdoc, argv->line, argv->pos, 
+                                       "multiple types specified"));

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

-       if (0 == type)
-               return(mdoc_err(mdoc, "no display type specified"));
-       if (0 == err)
+
+       if (type)

                return(1);
                return(1);

-       assert(argv);
-       return(mdoc_perr(mdoc, argv->line, 
-                       argv->pos, "only one display type possible"));
+       return(mdoc_err(mdoc, "no type specified"));

 }
 
 
 static int
 }
 
 
 static int

-pre_ss(struct mdoc *mdoc, struct mdoc_node *node)
+pre_ss(PRE_ARGS)

 {
 
 {
 

-       if (MDOC_BLOCK != node->type)
+       if (MDOC_BLOCK != n->type)

                return(1);
                return(1);

-       return(check_parent(mdoc, node, MDOC_Sh, MDOC_BODY));
+       return(check_parent(mdoc, n, MDOC_Sh, MDOC_BODY));

 }
 
 
 static int
 }
 
 
 static int

-pre_sh(struct mdoc *mdoc, struct mdoc_node *node)
+pre_sh(PRE_ARGS)

 {
 
 {
 

-       if (MDOC_BLOCK != node->type)
+       if (MDOC_BLOCK != n->type)

                return(1);
                return(1);

-       return(check_parent(mdoc, node, -1, MDOC_ROOT));
+       return(check_parent(mdoc, n, -1, MDOC_ROOT));

 }
 
 
 static int
 }
 
 
 static int

-pre_st(struct mdoc *mdoc, struct mdoc_node *node)
+pre_it(PRE_ARGS)

 {
 
 {
 

-       assert(MDOC_ELEM == node->type);
-       assert(MDOC_St == node->tok);
-       if (1 == node->data.elem.argc)
+       /* TODO: -width attribute must be specified for -tag. */
+       /* TODO: children too big for -width? */
+
+       if (MDOC_BLOCK != n->type)

                return(1);
                return(1);

-       return(mdoc_nerr(mdoc, node, "macro must have one argument"));
+       return(check_parent(mdoc, n, MDOC_Bl, MDOC_BODY));

 }
 
 
 static int
 }
 
 
 static int

-pre_an(struct mdoc *mdoc, struct mdoc_node *node)
+pre_st(PRE_ARGS)

 {
 
 {
 

-       assert(MDOC_ELEM == node->type);
-       assert(MDOC_An == node->tok);
-       if (1 >= node->data.elem.argc)
+       if (1 == n->data.elem.argc)

                return(1);
                return(1);

-       return(mdoc_nerr(mdoc, node, "macro may only have one argument"));
+       return(mdoc_nerr(mdoc, n, "one argument required"));

 }
 
 
 static int
 }
 
 
 static int

-pre_rv(struct mdoc *mdoc, struct mdoc_node *node)
+pre_an(PRE_ARGS)

 {
 {

-       enum mdoc_msec   msecs[2];
-
-       assert(MDOC_ELEM == node->type);
-       assert(MDOC_Rv == node->tok);

 
 

-       msecs[0] = MSEC_2;
-       msecs[1] = MSEC_3;
-       if ( ! check_msec(mdoc, node, 2, msecs))
-               return(0);
-       return(check_stdarg(mdoc, node));
+       if (1 >= n->data.elem.argc)
+               return(1);
+       return(mdoc_nerr(mdoc, n, "one argument allowed"));

 }
 
 
 static int
 }
 
 
 static int

-pre_ex(struct mdoc *mdoc, struct mdoc_node *node)
+pre_rv(PRE_ARGS)

 {
 {

-       enum mdoc_msec   msecs[3];
+       enum mdoc_msec msecs[] = { MSEC_2, MSEC_3 };

 
 

-       assert(MDOC_ELEM == node->type);
-       assert(MDOC_Ex == node->tok);
-
-       msecs[0] = MSEC_1;
-       msecs[1] = MSEC_6;
-       msecs[2] = MSEC_8;
-       if ( ! check_msec(mdoc, node, 3, msecs))
+       if ( ! check_msec(mdoc, n, 2, msecs))

                return(0);
                return(0);

-       return(check_stdarg(mdoc, node));
+       return(check_stdarg(mdoc, n));

 }
 
 
 static int
 }
 
 
 static int

-pre_er(struct mdoc *mdoc, struct mdoc_node *node)
+pre_ex(PRE_ARGS)

 {
 {

-       enum mdoc_msec   msecs[1];
+       enum mdoc_msec msecs[] = { MSEC_1, MSEC_6, MSEC_8 };

 
 

-       msecs[0] = MSEC_2;
-       return(check_msec(mdoc, node, 1, msecs));
+       if ( ! check_msec(mdoc, n, 3, msecs))
+               return(0);
+       return(check_stdarg(mdoc, n));

 }
 
 
 static int
 }
 
 
 static int

-pre_cd(struct mdoc *mdoc, struct mdoc_node *node)
+pre_er(PRE_ARGS)

 {
 {

-       enum mdoc_msec   msecs[1];
+       enum mdoc_msec msecs[] = { MSEC_2 };

 
 

-       msecs[0] = MSEC_4;
-       return(check_msec(mdoc, node, 1, msecs));
+       return(check_msec(mdoc, n, 1, msecs));

 }
 
 
 static int
 }
 
 
 static int

-pre_it(struct mdoc *mdoc, struct mdoc_node *node)
+pre_cd(PRE_ARGS)

 {
 {

+       enum mdoc_msec msecs[] = { MSEC_4 };

 
 

-       /* TODO: -width attribute must be specified for -tag. */
-       /* TODO: children too big for -width? */
-
-       if (MDOC_BLOCK != node->type)
-               return(1);
-       return(check_parent(mdoc, node, MDOC_Bl, MDOC_BODY));
+       return(check_msec(mdoc, n, 1, msecs));

 }
 
 
 static int
 }
 
 
 static int

-pre_prologue(struct mdoc *mdoc, struct mdoc_node *node)
+pre_prologue(PRE_ARGS)

 {
 
        if (SEC_PROLOGUE != mdoc->lastnamed)
 {
 
        if (SEC_PROLOGUE != mdoc->lastnamed)

-               return(mdoc_nerr(mdoc, node, "macro may only be invoked in the prologue"));
-       assert(MDOC_ELEM == node->type);
+               return(mdoc_nerr(mdoc, n, "prologue only"));

 
        /* Check for ordering. */
 
 
        /* Check for ordering. */
 

-       switch (node->tok) {
+       switch (n->tok) {

        case (MDOC_Os):
                if (mdoc->meta.title && mdoc->meta.date)
                        break;
        case (MDOC_Os):
                if (mdoc->meta.title && mdoc->meta.date)
                        break;

-               return(mdoc_nerr(mdoc, node, "prologue macro out-of-order"));
+               return(mdoc_nerr(mdoc, n, "prologue out-of-order"));

        case (MDOC_Dt):
                if (NULL == mdoc->meta.title && mdoc->meta.date)
                        break;
        case (MDOC_Dt):
                if (NULL == mdoc->meta.title && mdoc->meta.date)
                        break;

-               return(mdoc_nerr(mdoc, node, "prologue macro out-of-order"));
+               return(mdoc_nerr(mdoc, n, "prologue out-of-order"));

        case (MDOC_Dd):
                if (NULL == mdoc->meta.title && 0 == mdoc->meta.date)
                        break;
        case (MDOC_Dd):
                if (NULL == mdoc->meta.title && 0 == mdoc->meta.date)
                        break;

-               return(mdoc_nerr(mdoc, node, "prologue macro out-of-order"));
+               return(mdoc_nerr(mdoc, n, "prologue out-of-order"));

        default:
                abort();
                /* NOTREACHED */
        default:
                abort();
                /* NOTREACHED */


@@ -771,7 +753,7 @@ pre_prologue(struct mdoc *mdoc, struct mdoc_node *node)
 
        /* Check for repetition. */
 
 
        /* Check for repetition. */
 

-       switch (node->tok) {
+       switch (n->tok) {

        case (MDOC_Os):
                if (NULL == mdoc->meta.os)
                        return(1);
        case (MDOC_Os):
                if (NULL == mdoc->meta.os)
                        return(1);


@@ -789,72 +771,63 @@ pre_prologue(struct mdoc *mdoc, struct mdoc_node *node)
                /* NOTREACHED */
        }
 
                /* NOTREACHED */
        }
 

-       return(mdoc_nerr(mdoc, node, "prologue macro repeated"));
+       return(mdoc_nerr(mdoc, n, "prologue repetition"));

 }
 
 
 static int
 }
 
 
 static int

-post_bf(struct mdoc *mdoc)
+post_bf(POST_ARGS)

 {
        char             *p;
        struct mdoc_node *head;
 
        if (MDOC_BLOCK != mdoc->last->type)
                return(1);
 {
        char             *p;
        struct mdoc_node *head;
 
        if (MDOC_BLOCK != mdoc->last->type)
                return(1);

-       assert(MDOC_Bf == mdoc->last->tok);
+

        head = mdoc->last->data.block.head;
        head = mdoc->last->data.block.head;

-       assert(head);

 
        if (0 == mdoc->last->data.block.argc) {
 
        if (0 == mdoc->last->data.block.argc) {

-               if (head->child) {
-                       assert(MDOC_TEXT == head->child->type);
-                       p = head->child->data.text.string;
-                       if (xstrcmp(p, "Em"))
-                               return(1);
-                       else if (xstrcmp(p, "Li"))
-                               return(1);
-                       else if (xstrcmp(p, "Sm"))
-                               return(1);
-                       return(mdoc_nerr(mdoc, head->child, "invalid font mode"));
-               }
-               return(mdoc_err(mdoc, "macro expects an argument or parameter"));
+               if (NULL == head->child)
+                       return(mdoc_err(mdoc, "argument expected"));
+
+               p = head->child->data.text.string;
+               if (xstrcmp(p, "Em"))
+                       return(1);
+               else if (xstrcmp(p, "Li"))
+                       return(1);
+               else if (xstrcmp(p, "Sm"))
+                       return(1);
+               return(mdoc_nerr(mdoc, head->child, "invalid font"));

        }
        }

+

        if (head->child)
        if (head->child)

-               return(mdoc_err(mdoc, "macro expects an argument or parameter"));
+               return(mdoc_err(mdoc, "argument expected"));
+

        if (1 == mdoc->last->data.block.argc)
                return(1);
        if (1 == mdoc->last->data.block.argc)
                return(1);

-       return(mdoc_err(mdoc, "macro expects an argument or parameter"));
+       return(mdoc_err(mdoc, "argument expected"));

 }
 
 
 static int
 }
 
 
 static int

-post_nm(struct mdoc *mdoc)
+post_nm(POST_ARGS)

 {
 
 {
 

-       assert(MDOC_ELEM == mdoc->last->type);
-       assert(MDOC_Nm == mdoc->last->tok);

        if (mdoc->last->child)
                return(1);
        if (mdoc->meta.name)
                return(1);
        if (mdoc->last->child)
                return(1);
        if (mdoc->meta.name)
                return(1);

-       return(mdoc_err(mdoc, "macro `%s' has not been invoked with a name",
-                               mdoc_macronames[MDOC_Nm]));
+       return(mdoc_err(mdoc, "not yet invoked with name"));

 }
 
 
 static int
 }
 
 
 static int

-post_xr(struct mdoc *mdoc)
+post_xr(POST_ARGS)

 {
        struct mdoc_node *n;
 
 {
        struct mdoc_node *n;
 

-       assert(MDOC_ELEM == mdoc->last->type);
-       assert(MDOC_Xr == mdoc->last->tok);
-       assert(mdoc->last->child);
-       assert(MDOC_TEXT == mdoc->last->child->type);
-

        if (NULL == (n = mdoc->last->child->next))
                return(1);
        if (NULL == (n = mdoc->last->child->next))
                return(1);

-       assert(MDOC_TEXT == n->type);

        if (MSEC_DEFAULT != mdoc_atomsec(n->data.text.string))
                return(1);
        return(mdoc_nerr(mdoc, n, "invalid manual section"));
        if (MSEC_DEFAULT != mdoc_atomsec(n->data.text.string))
                return(1);
        return(mdoc_nerr(mdoc, n, "invalid manual section"));


@@ -862,91 +835,68 @@ post_xr(struct mdoc *mdoc)
 
 
 static int
 
 
 static int

-post_at(struct mdoc *mdoc)
+post_at(POST_ARGS)

 {
 
 {
 

-       assert(MDOC_ELEM == mdoc->last->type);
-       assert(MDOC_At == mdoc->last->tok);
-

        if (NULL == mdoc->last->child)
                return(1);
        if (NULL == mdoc->last->child)
                return(1);

-       assert(MDOC_TEXT == mdoc->last->child->type);
-

        if (ATT_DEFAULT != mdoc_atoatt(mdoc->last->child->data.text.string))
                return(1);
        if (ATT_DEFAULT != mdoc_atoatt(mdoc->last->child->data.text.string))
                return(1);

-       return(mdoc_err(mdoc, "macro expects a valid AT&T version symbol"));
+       return(mdoc_err(mdoc, "require valid symbol"));

 }
 
 
 static int
 }
 
 
 static int

-post_an(struct mdoc *mdoc)
+post_an(POST_ARGS)

 {
 
 {
 

-       assert(MDOC_ELEM == mdoc->last->type);
-       assert(MDOC_An == mdoc->last->tok);
-

        if (0 != mdoc->last->data.elem.argc) {
                if (NULL == mdoc->last->child)
                        return(1);
        if (0 != mdoc->last->data.elem.argc) {
                if (NULL == mdoc->last->child)
                        return(1);

-               return(mdoc_err(mdoc, "macro expects either argument or parameters"));
+               return(mdoc_err(mdoc, "argument(s) expected"));

        }
 
        if (mdoc->last->child)
                return(1);
        }
 
        if (mdoc->last->child)
                return(1);

-       return(mdoc_err(mdoc, "macro expects either argument or parameters"));
+       return(mdoc_err(mdoc, "argument(s) expected"));

 }
 
 
 static int
 }
 
 
 static int

-post_ex(struct mdoc *mdoc)
+post_ex(POST_ARGS)

 {
 
 {
 

-       assert(MDOC_ELEM == mdoc->last->type);
-       assert(MDOC_Ex == mdoc->last->tok);
-

        if (0 == mdoc->last->data.elem.argc) {
                if (mdoc->last->child)
                        return(1);
        if (0 == mdoc->last->data.elem.argc) {
                if (mdoc->last->child)
                        return(1);

-               return(mdoc_err(mdoc, "macro expects `%s' or a single child",
-                                       mdoc_argnames[MDOC_Std]));
+               return(mdoc_err(mdoc, "argument(s) expected"));

        }
        if (mdoc->last->child)
        }
        if (mdoc->last->child)

-               return(mdoc_err(mdoc, "macro expects `%s' or a single child",
-                                       mdoc_argnames[MDOC_Std]));
+               return(mdoc_err(mdoc, "argument(s) expected"));

        if (1 != mdoc->last->data.elem.argc)
        if (1 != mdoc->last->data.elem.argc)

-               return(mdoc_err(mdoc, "macro expects `%s' or a single child",
-                                       mdoc_argnames[MDOC_Std]));
+               return(mdoc_err(mdoc, "argument(s) expected"));

        if (MDOC_Std != mdoc->last->data.elem.argv[0].arg)
        if (MDOC_Std != mdoc->last->data.elem.argv[0].arg)

-               return(mdoc_err(mdoc, "macro expects `%s' or a single child",
-                                       mdoc_argnames[MDOC_Std]));
+               return(mdoc_err(mdoc, "argument(s) expected"));
+

        return(1);
 }
 
 
        return(1);
 }
 
 

-/* Warn if `Bl' type-specific syntax isn't reflected in items. */

 static int
 static int

-post_it(struct mdoc *mdoc)
+post_it(POST_ARGS)

 {
 {

-       int               type, sv;
+       int               type, sv, i;

 #define        TYPE_NONE        (0)
 #define        TYPE_BODY        (1)
 #define        TYPE_HEAD        (2)
 #define        TYPE_OHEAD       (3)
 #define        TYPE_NONE        (0)
 #define        TYPE_BODY        (1)
 #define        TYPE_HEAD        (2)
 #define        TYPE_OHEAD       (3)

-       size_t            i, argc;
+       size_t            argc;

        struct mdoc_node *n;
 
        if (MDOC_BLOCK != mdoc->last->type)
                return(1);
 
        struct mdoc_node *n;
 
        if (MDOC_BLOCK != mdoc->last->type)
                return(1);
 

-       assert(MDOC_It == mdoc->last->tok);
-
-       n = mdoc->last->parent;
-       assert(n);
-       assert(MDOC_Bl == n->tok);
-
-       n = n->parent;
-       assert(MDOC_BLOCK == n->type);
-       assert(MDOC_Bl == n->tok);
+       n = mdoc->last->parent->parent;

 
        argc = n->data.block.argc;
        type = TYPE_NONE;
 
        argc = n->data.block.argc;
        type = TYPE_NONE;


@@ -955,8 +905,8 @@ post_it(struct mdoc *mdoc)
        /* Some types require block-head, some not. */
 
        /* LINTED */
        /* Some types require block-head, some not. */
 
        /* LINTED */

-       for (i = 0; TYPE_NONE == type && i < argc; i++)
-               switch (n->data.block.argv[(int)i].arg) {
+       for (i = 0; TYPE_NONE == type && i < (int)argc; i++)
+               switch (n->data.block.argv[i].arg) {

                case (MDOC_Tag):
                        /* FALLTHROUGH */
                case (MDOC_Diag):
                case (MDOC_Tag):
                        /* FALLTHROUGH */
                case (MDOC_Diag):


@@ -967,7 +917,7 @@ post_it(struct mdoc *mdoc)
                        /* FALLTHROUGH */
                case (MDOC_Inset):
                        type = TYPE_HEAD;
                        /* FALLTHROUGH */
                case (MDOC_Inset):
                        type = TYPE_HEAD;

-                       sv = n->data.block.argv[(int)i].arg;
+                       sv = n->data.block.argv[i].arg;

                        break;
                case (MDOC_Bullet):
                        /* FALLTHROUGH */
                        break;
                case (MDOC_Bullet):
                        /* FALLTHROUGH */


@@ -979,11 +929,11 @@ post_it(struct mdoc *mdoc)
                        /* FALLTHROUGH */
                case (MDOC_Item):
                        type = TYPE_BODY;
                        /* FALLTHROUGH */
                case (MDOC_Item):
                        type = TYPE_BODY;

-                       sv = n->data.block.argv[(int)i].arg;
+                       sv = n->data.block.argv[i].arg;

                        break;
                case (MDOC_Column):
                        type = TYPE_OHEAD;
                        break;
                case (MDOC_Column):
                        type = TYPE_OHEAD;

-                       sv = n->data.block.argv[(int)i].arg;
+                       sv = n->data.block.argv[i].arg;

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


@@ -992,55 +942,56 @@ post_it(struct mdoc *mdoc)
        assert(TYPE_NONE != type);
 
        n = mdoc->last->data.block.head;
        assert(TYPE_NONE != type);
 
        n = mdoc->last->data.block.head;

-       assert(n);

 
        if (TYPE_HEAD == type) {
                if (NULL == n->child)
 
        if (TYPE_HEAD == type) {
                if (NULL == n->child)

-                       if ( ! mdoc_warn(mdoc, WARN_SYNTAX, "macro suggests line parameters"))
+                       if ( ! mdoc_warn(mdoc, WARN_SYNTAX, 
+                                       "argument(s) suggested"))

                                return(0);
 
                n = mdoc->last->data.block.body;
                                return(0);
 
                n = mdoc->last->data.block.body;

-               assert(n);

                if (NULL == n->child)
                if (NULL == n->child)

-                       if ( ! mdoc_warn(mdoc, WARN_SYNTAX, "macro suggests body children"))
+                       if ( ! mdoc_warn(mdoc, WARN_SYNTAX, 
+                                       "multiline body suggested"))

                                return(0);
 
        } else if (TYPE_BODY == type) {
                if (n->child)
                                return(0);
 
        } else if (TYPE_BODY == type) {
                if (n->child)

-                       if ( ! mdoc_warn(mdoc, WARN_SYNTAX, "macro suggests no line parameters"))
+                       if ( ! mdoc_warn(mdoc, WARN_SYNTAX, 
+                                       "no argument suggested"))

                                return(0);
        
                n = mdoc->last->data.block.body;
                                return(0);
        
                n = mdoc->last->data.block.body;

-               assert(n);

                if (NULL == n->child)
                if (NULL == n->child)

-                       if ( ! mdoc_warn(mdoc, WARN_SYNTAX, "macro suggests body children"))
+                       if ( ! mdoc_warn(mdoc, WARN_SYNTAX, 
+                                       "multiline body suggested"))

                                return(0);
        } else {
                if (NULL == n->child)
                                return(0);
        } else {
                if (NULL == n->child)

-                       if ( ! mdoc_warn(mdoc, WARN_SYNTAX, "macro suggests line parameters"))
+                       if ( ! mdoc_warn(mdoc, WARN_SYNTAX, 
+                                       "argument(s) suggested"))

                                return(0);
        
                n = mdoc->last->data.block.body;
                                return(0);
        
                n = mdoc->last->data.block.body;

-               assert(n);

                if (n->child)
                if (n->child)

-                       if ( ! mdoc_warn(mdoc, WARN_SYNTAX, "macro suggests no body children"))
+                       if ( ! mdoc_warn(mdoc, WARN_SYNTAX, 
+                                       "no multiline body suggested"))

                                return(0);
        }
 
        if (MDOC_Column != sv)
                return(1);
 
                                return(0);
        }
 
        if (MDOC_Column != sv)
                return(1);
 

-       /* Make sure the number of columns is sane. */
-

        argc = mdoc->last->parent->parent->data.block.argv->sz;
        n = mdoc->last->data.block.head->child;
 
        for (i = 0; n; n = n->next)
                i++;
 
        argc = mdoc->last->parent->parent->data.block.argv->sz;
        n = mdoc->last->data.block.head->child;
 
        for (i = 0; n; n = n->next)
                i++;
 

-       if (i == argc)
+       if (i == (int)argc)

                return(1);
                return(1);

-       return(mdoc_err(mdoc, "expected %zu list columns, have %zu", argc, i));
+
+       return(mdoc_err(mdoc, "need %zu columns (have %d)", argc, i));

 #undef TYPE_NONE
 #undef TYPE_BODY
 #undef TYPE_HEAD
 #undef TYPE_NONE
 #undef TYPE_BODY
 #undef TYPE_HEAD


@@ -1049,13 +1000,12 @@ post_it(struct mdoc *mdoc)
 
 
 static int
 
 
 static int

-post_bl(struct mdoc *mdoc)
+post_bl(POST_ARGS)

 {
 {

-       struct mdoc_node *n;
+       struct mdoc_node        *n;

 
        if (MDOC_BODY != mdoc->last->type)
                return(1);
 
        if (MDOC_BODY != mdoc->last->type)
                return(1);

-       assert(MDOC_Bl == mdoc->last->tok);

 
        /* LINTED */
        for (n = mdoc->last->child; n; n = n->next) {
 
        /* LINTED */
        for (n = mdoc->last->child; n; n = n->next) {


@@ -1064,9 +1014,11 @@ post_bl(struct mdoc *mdoc)
                                continue;
                break;
        }
                                continue;
                break;
        }

+

        if (NULL == n)
                return(1);
        if (NULL == n)
                return(1);

-       return(mdoc_nerr(mdoc, n, "invalid child of parent macro `Bl'"));
+
+       return(mdoc_nerr(mdoc, n, "bad child of parent list"));

 }
 
 
 }
 
 


@@ -1075,7 +1027,6 @@ ebool(struct mdoc *mdoc)
 {
        struct mdoc_node *n;
 
 {
        struct mdoc_node *n;
 

-       assert(MDOC_ELEM == mdoc->last->type);

        /* LINTED */
        for (n = mdoc->last->child; n; n = n->next) {
                if (MDOC_TEXT != n->type)
        /* LINTED */
        for (n = mdoc->last->child; n; n = n->next) {
                if (MDOC_TEXT != n->type)


@@ -1086,47 +1037,51 @@ ebool(struct mdoc *mdoc)
                        continue;
                break;
        }
                        continue;
                break;
        }

+

        if (NULL == n)
                return(1);
        if (NULL == n)
                return(1);

-       return(mdoc_nerr(mdoc, n, "expected boolean value"));
+       return(mdoc_nerr(mdoc, n, "expected boolean"));

 }
 
 
 static int
 }
 
 
 static int

-post_root(struct mdoc *mdoc)
+post_root(POST_ARGS)

 {
 
        if (NULL == mdoc->first->child)
 {
 
        if (NULL == mdoc->first->child)

-               return(mdoc_err(mdoc, "document has no data"));
+               return(mdoc_err(mdoc, "document lacks data"));

        if (SEC_PROLOGUE == mdoc->lastnamed)
        if (SEC_PROLOGUE == mdoc->lastnamed)

-               return(mdoc_err(mdoc, "document has incomplete prologue"));
+               return(mdoc_err(mdoc, "document lacks prologue"));
+

        if (MDOC_BLOCK != mdoc->first->child->type)
        if (MDOC_BLOCK != mdoc->first->child->type)

-               return(mdoc_err(mdoc, "document expects `%s' macro after prologue", mdoc_macronames[MDOC_Sh]));
+               return(mdoc_err(mdoc, "lacking post-prologue %s", 
+                                       mdoc_macronames[MDOC_Sh]));

        if (MDOC_Sh != mdoc->first->child->tok)
        if (MDOC_Sh != mdoc->first->child->tok)

-               return(mdoc_err(mdoc, "document expects `%s' macro after prologue", mdoc_macronames[MDOC_Sh]));
+               return(mdoc_err(mdoc, "lacking post-prologue %s", 
+                                       mdoc_macronames[MDOC_Sh]));
+

        return(1);
 }
 
 
 static int
        return(1);
 }
 
 
 static int

-post_sh(struct mdoc *mdoc)
+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));
 {
 
        if (MDOC_HEAD == mdoc->last->type)
                return(post_sh_head(mdoc));
        if (MDOC_BODY == mdoc->last->type)
                return(post_sh_body(mdoc));

+

        return(1);
 }
 
 
 static int
        return(1);
 }
 
 
 static int

-post_sh_body(struct mdoc *mdoc)
+post_sh_body(POST_ARGS)

 {
        struct mdoc_node *n;
 
 {
        struct mdoc_node *n;
 

-       assert(MDOC_Sh == mdoc->last->tok);
-       assert(MDOC_BODY == mdoc->last->type);

        if (SEC_NAME != mdoc->lastnamed)
                return(1);
 
        if (SEC_NAME != mdoc->lastnamed)
                return(1);
 


@@ -1137,8 +1092,8 @@ post_sh_body(struct mdoc *mdoc)
         */
 
        if (NULL == (n = mdoc->last->child))
         */
 
        if (NULL == (n = mdoc->last->child))

-               return(mdoc_warn(mdoc, WARN_COMPAT, "section NAME "
-                                       "should contain %s and %s", 
+               return(mdoc_warn(mdoc, WARN_SYNTAX, 
+                                       "section should have %s and %s",

                                        mdoc_macronames[MDOC_Nm],
                                        mdoc_macronames[MDOC_Nd]));
 
                                        mdoc_macronames[MDOC_Nm],
                                        mdoc_macronames[MDOC_Nd]));
 


@@ -1147,9 +1102,8 @@ post_sh_body(struct mdoc *mdoc)
                        continue;
                if (MDOC_TEXT == n->type)
                        continue;
                        continue;
                if (MDOC_TEXT == n->type)
                        continue;

-               if ( ! (mdoc_nwarn(mdoc, n, WARN_COMPAT, "section "
-                                       "NAME should contain %s as "
-                                       "initial body child", 
+               if ( ! (mdoc_nwarn(mdoc, n, WARN_SYNTAX, 
+                                       "section should have %s first",

                                        mdoc_macronames[MDOC_Nm])))
                        return(0);
        }
                                        mdoc_macronames[MDOC_Nm])))
                        return(0);
        }


@@ -1157,76 +1111,47 @@ post_sh_body(struct mdoc *mdoc)
        if (MDOC_ELEM == n->type && MDOC_Nd == n->tok)
                return(1);
 
        if (MDOC_ELEM == n->type && MDOC_Nd == n->tok)
                return(1);
 

-       return(mdoc_warn(mdoc, WARN_COMPAT, "section NAME should "
-                               "contain %s as the last child",
+       return(mdoc_warn(mdoc, WARN_SYNTAX, 
+                               "section should have %s last",

                                mdoc_macronames[MDOC_Nd]));
 }
 
 
 static int
                                mdoc_macronames[MDOC_Nd]));
 }
 
 
 static int

-post_sh_head(struct mdoc *mdoc)
+post_sh_head(POST_ARGS)

 {
        char              buf[64];
        enum mdoc_sec     sec;
 
        assert(MDOC_Sh == mdoc->last->tok);
 
 {
        char              buf[64];
        enum mdoc_sec     sec;
 
        assert(MDOC_Sh == mdoc->last->tok);
 

-       if ( ! xstrlcats(buf, mdoc->last->child, 64))
-               return(mdoc_err(mdoc, "macro parameters too long"));
+       if ( ! xstrlcats(buf, mdoc->last->child, sizeof(buf)))
+               return(mdoc_err(mdoc, "argument too long"));

 
        sec = mdoc_atosec(buf);
 
        if (SEC_BODY == mdoc->lastnamed && SEC_NAME != sec)
 
        sec = mdoc_atosec(buf);
 
        if (SEC_BODY == mdoc->lastnamed && SEC_NAME != sec)

-               return(mdoc_err(mdoc, "section NAME must be first"));
+               return(mdoc_warn(mdoc, WARN_SYNTAX, 
+                               "section NAME should be first"));

        if (SEC_CUSTOM == sec)
                return(1);
        if (sec == mdoc->lastnamed)
        if (SEC_CUSTOM == sec)
                return(1);
        if (sec == mdoc->lastnamed)

-               return(mdoc_warn(mdoc, WARN_SYNTAX, "section repeated"));
+               return(mdoc_warn(mdoc, WARN_SYNTAX, 
+                               "section repeated"));

        if (sec < mdoc->lastnamed)
        if (sec < mdoc->lastnamed)

-               return(mdoc_warn(mdoc, WARN_SYNTAX, "section out of conventional order"));
-
-       return(1);
-}
-
+               return(mdoc_warn(mdoc, WARN_SYNTAX, 
+                               "section out of order"));

 
 

-int
-mdoc_valid_pre(struct mdoc *mdoc, struct mdoc_node *node)
-{
-       v_pre           *p;
-
-       if (MDOC_TEXT == node->type)
-               return(1);
-       assert(MDOC_ROOT != node->type);
-
-       if (NULL == mdoc_valids[node->tok].pre)
-               return(1);
-       for (p = mdoc_valids[node->tok].pre; *p; p++)
-               if ( ! (*p)(mdoc, node)) 
-                       return(0);

        return(1);
 }
 
 
        return(1);
 }
 
 

-int
-mdoc_valid_post(struct mdoc *mdoc)
+static int
+post_fd(POST_ARGS)

 {
 {

-       v_post          *p;

 
 

-       if (MDOC_VALID & mdoc->last->flags)
+       if (SEC_SYNOPSIS == mdoc->last->sec)

                return(1);
                return(1);

-       mdoc->last->flags |= MDOC_VALID;
-
-       if (MDOC_TEXT == mdoc->last->type)
-               return(1);
-       if (MDOC_ROOT == mdoc->last->type)
-               return(post_root(mdoc));
-
-       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);
-
-       return(1);
+       return(mdoc_warn(mdoc, WARN_COMPAT, 
+                       "suggested only in section SYNOPSIS"));

 }
 }

-