`Cd' in -Thtml -mdoc correctly breaks lines.

[mandoc.git] / mdoc_action.c

diff --git a/mdoc_action.c b/mdoc_action.c
index 156bb1e37a339ecf88e5efe02702c56a319f9b8c..844e1bf646ed9a08d235fd18f2d2e36afbafee1d 100644 (file)
--- a/mdoc_action.c
+++ b/mdoc_action.c
@@ -1,4 +1,4 @@
-/*     $Id: mdoc_action.c,v 1.31 2009/07/21 15:53:31 kristaps Exp $ */
+/*     $Id: mdoc_action.c,v 1.41 2009/09/25 13:03:25 kristaps Exp $ */

 /*
  * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se>
  *
 /*
  * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se>
  *


@@ -24,14 +24,23 @@
 
 #include "libmdoc.h"
 
 
 #include "libmdoc.h"
 

+#define        POST_ARGS struct mdoc *m, struct mdoc_node *n

 #define        PRE_ARGS  struct mdoc *m, const struct mdoc_node *n
 #define        PRE_ARGS  struct mdoc *m, const struct mdoc_node *n

-#define        POST_ARGS struct mdoc *m

 
 struct actions {
        int     (*pre)(PRE_ARGS);
        int     (*post)(POST_ARGS);
 };
 
 
 struct actions {
        int     (*pre)(PRE_ARGS);
        int     (*post)(POST_ARGS);
 };
 

+static int       concat(struct mdoc *, 
+                       const struct mdoc_node *, 
+                       char *, size_t);
+static inline int order_rs(int);
+
+#ifdef __linux__
+extern size_t    strlcat(char *, const char *, size_t);
+#endif
+

 static int       post_ar(POST_ARGS);
 static int       post_at(POST_ARGS);
 static int       post_bl(POST_ARGS);
 static int       post_ar(POST_ARGS);
 static int       post_at(POST_ARGS);
 static int       post_bl(POST_ARGS);


@@ -45,15 +54,18 @@ static      int       post_lb(POST_ARGS);
 static int       post_nm(POST_ARGS);
 static int       post_os(POST_ARGS);
 static int       post_prol(POST_ARGS);
 static int       post_nm(POST_ARGS);
 static int       post_os(POST_ARGS);
 static int       post_prol(POST_ARGS);

+static int       post_rs(POST_ARGS);

 static int       post_sh(POST_ARGS);
 static int       post_st(POST_ARGS);
 static int       post_std(POST_ARGS);
 static int       post_tilde(POST_ARGS);
 
 static int       pre_bd(PRE_ARGS);
 static int       post_sh(POST_ARGS);
 static int       post_st(POST_ARGS);
 static int       post_std(POST_ARGS);
 static int       post_tilde(POST_ARGS);
 
 static int       pre_bd(PRE_ARGS);

+static int       pre_bl(PRE_ARGS);

 static int       pre_dl(PRE_ARGS);
 static int       pre_dl(PRE_ARGS);

+static int       pre_offset(PRE_ARGS);

 
 

-const  struct actions mdoc_actions[MDOC_MAX] = {
+static const struct actions mdoc_actions[MDOC_MAX] = {

        { NULL, NULL }, /* Ap */
        { NULL, post_dd }, /* Dd */ 
        { NULL, post_dt }, /* Dt */ 
        { NULL, NULL }, /* Ap */
        { NULL, post_dd }, /* Dd */ 
        { NULL, post_dt }, /* Dt */ 


@@ -65,13 +77,13 @@ const       struct actions mdoc_actions[MDOC_MAX] = {
        { pre_dl, post_display }, /* Dl */
        { pre_bd, post_display }, /* Bd */ 
        { NULL, NULL }, /* Ed */
        { pre_dl, post_display }, /* Dl */
        { pre_bd, post_display }, /* Bd */ 
        { NULL, NULL }, /* Ed */

-       { NULL, post_bl }, /* Bl */ 
+       { pre_bl, post_bl }, /* Bl */ 

        { NULL, NULL }, /* El */
        { NULL, NULL }, /* It */
        { NULL, NULL }, /* Ad */ 
        { NULL, NULL }, /* An */
        { NULL, post_ar }, /* Ar */
        { NULL, NULL }, /* El */
        { NULL, NULL }, /* It */
        { NULL, NULL }, /* Ad */ 
        { NULL, NULL }, /* An */
        { NULL, post_ar }, /* Ar */

-       { NULL, NULL }, /* Cd */ /* FIXME: tabs are accepted! */
+       { NULL, NULL }, /* Cd */

        { NULL, NULL }, /* Cm */
        { NULL, NULL }, /* Dv */ 
        { NULL, NULL }, /* Er */ 
        { NULL, NULL }, /* Cm */
        { NULL, NULL }, /* Dv */ 
        { NULL, NULL }, /* Er */ 


@@ -139,7 +151,7 @@ const       struct actions mdoc_actions[MDOC_MAX] = {
        { NULL, NULL }, /* Qo */
        { NULL, NULL }, /* Qq */
        { NULL, NULL }, /* Re */
        { NULL, NULL }, /* Qo */
        { NULL, NULL }, /* Qq */
        { NULL, NULL }, /* Re */

-       { NULL, NULL }, /* Rs */
+       { NULL, post_rs }, /* Rs */

        { NULL, NULL }, /* Sc */
        { NULL, NULL }, /* So */
        { NULL, NULL }, /* Sq */
        { NULL, NULL }, /* Sc */
        { NULL, NULL }, /* So */
        { NULL, NULL }, /* Sq */


@@ -176,12 +188,23 @@ const     struct actions mdoc_actions[MDOC_MAX] = {
        { NULL, NULL }, /* sp */
 };
 
        { NULL, NULL }, /* sp */
 };
 

-static int       concat(struct mdoc *, const struct mdoc_node *, 
-                       char *, size_t);
-
-#ifdef __linux__
-extern size_t    strlcat(char *, const char *, size_t);
-#endif
+#define        RSORD_MAX 13
+
+static const int rsord[RSORD_MAX] = {
+       MDOC__A,
+       MDOC__T,
+       MDOC__B,
+       MDOC__I,
+       MDOC__J,
+       MDOC__R,
+       MDOC__N,
+       MDOC__V,
+       MDOC__P,
+       MDOC__Q,
+       MDOC__D,
+       MDOC__O,
+       MDOC__C
+};

 
 
 int
 
 
 int


@@ -222,7 +245,7 @@ mdoc_action_post(struct mdoc *m)
 
        if (NULL == mdoc_actions[m->last->tok].post)
                return(1);
 
        if (NULL == mdoc_actions[m->last->tok].post)
                return(1);

-       return((*mdoc_actions[m->last->tok].post)(m));
+       return((*mdoc_actions[m->last->tok].post)(m, m->last));

 }
 
 
 }
 
 


@@ -248,27 +271,17 @@ concat(struct mdoc *m, const struct mdoc_node *n,
 static int
 post_std(POST_ARGS)
 {
 static int
 post_std(POST_ARGS)
 {

+       struct mdoc_node        *nn;

 
 

-       /*
-        * If '-std' is invoked without an argument, fill it in with our
-        * name (if it's been set).
-        */
-
-       if (NULL == m->last->args)
+       if (n->child)

                return(1);
                return(1);

-       if (m->last->args->argv[0].sz)
-               return(1);
-
+       
+       nn = n;
+       m->next = MDOC_NEXT_CHILD;

        assert(m->meta.name);
        assert(m->meta.name);

-
-       m->last->args->argv[0].value = calloc(1, sizeof(char *));
-       if (NULL == m->last->args->argv[0].value)
-               return(mdoc_nerr(m, m->last, EMALLOC));
-
-       m->last->args->argv[0].sz = 1;
-       m->last->args->argv[0].value[0] = strdup(m->meta.name);
-       if (NULL == m->last->args->argv[0].value[0])
-               return(mdoc_nerr(m, m->last, EMALLOC));
+       if ( ! mdoc_word_alloc(m, n->line, n->pos, m->meta.name))
+               return(0);
+       m->last = nn;

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


@@ -283,11 +296,10 @@ post_nm(POST_ARGS)
                return(1);
 
        buf[0] = 0;
                return(1);
 
        buf[0] = 0;

-       if ( ! concat(m, m->last->child, buf, sizeof(buf)))
+       if ( ! concat(m, n->child, buf, sizeof(buf)))

                return(0);
                return(0);

-

        if (NULL == (m->meta.name = strdup(buf)))
        if (NULL == (m->meta.name = strdup(buf)))

-               return(mdoc_nerr(m, m->last, EMALLOC));
+               return(mdoc_nerr(m, n, EMALLOC));

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


@@ -300,25 +312,26 @@ post_lb(POST_ARGS)
        char            *buf;
        size_t           sz;
 
        char            *buf;
        size_t           sz;
 

-       assert(MDOC_TEXT == m->last->child->type);
-       p = mdoc_a2lib(m->last->child->string);
+       assert(MDOC_TEXT == n->child->type);
+       p = mdoc_a2lib(n->child->string);

        if (NULL == p) {
        if (NULL == p) {

-               sz = strlen(m->last->child->string) +
+               sz = strlen(n->child->string) +

                        2 + strlen("\\(lqlibrary\\(rq");
                buf = malloc(sz);
                if (NULL == buf)
                        2 + strlen("\\(lqlibrary\\(rq");
                buf = malloc(sz);
                if (NULL == buf)

-                       return(mdoc_nerr(m, m->last, EMALLOC));
+                       return(mdoc_nerr(m, n, EMALLOC));

                (void)snprintf(buf, sz, "library \\(lq%s\\(rq", 
                (void)snprintf(buf, sz, "library \\(lq%s\\(rq", 

-                               m->last->child->string);
-               free(m->last->child->string);
-               m->last->child->string = buf;
+                               n->child->string);
+               free(n->child->string);
+               n->child->string = buf;

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

-       free(m->last->child->string);
-       m->last->child->string = strdup(p);
-       if (NULL == m->last->child->string)
-               return(mdoc_nerr(m, m->last, EMALLOC));
+       free(n->child->string);
+       n->child->string = strdup(p);
+       if (NULL == n->child->string)
+               return(mdoc_nerr(m, n, EMALLOC));
+

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


@@ -328,13 +341,14 @@ post_st(POST_ARGS)
 {
        const char      *p;
 
 {
        const char      *p;
 

-       assert(MDOC_TEXT == m->last->child->type);
-       p = mdoc_a2st(m->last->child->string);
+       assert(MDOC_TEXT == n->child->type);
+       p = mdoc_a2st(n->child->string);

        assert(p);
        assert(p);

-       free(m->last->child->string);
-       m->last->child->string = strdup(p);
-       if (NULL == m->last->child->string)
-               return(mdoc_nerr(m, m->last, EMALLOC));
+       free(n->child->string);
+       n->child->string = strdup(p);
+       if (NULL == n->child->string)
+               return(mdoc_nerr(m, n, EMALLOC));
+

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


@@ -342,28 +356,27 @@ post_st(POST_ARGS)
 static int
 post_at(POST_ARGS)
 {
 static int
 post_at(POST_ARGS)
 {

-       struct mdoc_node *n;
-       const char       *p;
+       struct mdoc_node        *nn;
+       const char              *p;

 
 

-       if (m->last->child) {
-               assert(MDOC_TEXT == m->last->child->type);
-               p = mdoc_a2att(m->last->child->string);
+       if (n->child) {
+               assert(MDOC_TEXT == n->child->type);
+               p = mdoc_a2att(n->child->string);

                assert(p);
                assert(p);

-               free(m->last->child->string);
-               m->last->child->string = strdup(p);
-               if (NULL == m->last->child->string)
-                       return(mdoc_nerr(m, m->last, EMALLOC));
+               free(n->child->string);
+               n->child->string = strdup(p);
+               if (NULL == n->child->string)
+                       return(mdoc_nerr(m, n, EMALLOC));

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

-       n = m->last;
+       nn = n;

        m->next = MDOC_NEXT_CHILD;
 
        m->next = MDOC_NEXT_CHILD;
 

-       if ( ! mdoc_word_alloc(m, n->line, n->pos, "AT&T UNIX"))
+       if ( ! mdoc_word_alloc(m, nn->line, nn->pos, "AT&T UNIX"))

                return(0);
                return(0);

+       m->last = nn;

 
 

-       m->last = n;
-       m->next = MDOC_NEXT_SIBLING;

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


@@ -380,11 +393,11 @@ post_sh(POST_ARGS)
         * check ordering.
         */
 
         * check ordering.
         */
 

-       if (MDOC_HEAD != m->last->type)
+       if (MDOC_HEAD != n->type)

                return(1);
 
        buf[0] = 0;
                return(1);
 
        buf[0] = 0;

-       if ( ! concat(m, m->last->child, buf, sizeof(buf)))
+       if ( ! concat(m, n->child, buf, sizeof(buf)))

                return(0);
        if (SEC_CUSTOM != (sec = mdoc_atosec(buf)))
                m->lastnamed = sec;
                return(0);
        if (SEC_CUSTOM != (sec = mdoc_atosec(buf)))
                m->lastnamed = sec;


@@ -401,7 +414,7 @@ post_sh(POST_ARGS)
                case (9):
                        break;
                default:
                case (9):
                        break;
                default:

-                       return(mdoc_nwarn(m, m->last, EBADSEC));
+                       return(mdoc_nwarn(m, n, EBADSEC));

                }
                break;
        default:
                }
                break;
        default:


@@ -414,7 +427,7 @@ post_sh(POST_ARGS)
 static int
 post_dt(POST_ARGS)
 {
 static int
 post_dt(POST_ARGS)
 {

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

        const char       *cp;
        char             *ep;
        long              lval;
        const char       *cp;
        char             *ep;
        long              lval;


@@ -433,25 +446,25 @@ post_dt(POST_ARGS)
         *   --> title = unknown, volume = local, msec = 0, arch = NULL
         */
 
         *   --> title = unknown, volume = local, msec = 0, arch = NULL
         */
 

-       if (NULL == (n = m->last->child)) {
+       if (NULL == (nn = n->child)) {

                if (NULL == (m->meta.title = strdup("unknown")))
                if (NULL == (m->meta.title = strdup("unknown")))

-                       return(mdoc_nerr(m, m->last, EMALLOC));
+                       return(mdoc_nerr(m, n, EMALLOC));

                if (NULL == (m->meta.vol = strdup("local")))
                if (NULL == (m->meta.vol = strdup("local")))

-                       return(mdoc_nerr(m, m->last, EMALLOC));
-               return(post_prol(m));
+                       return(mdoc_nerr(m, n, EMALLOC));
+               return(post_prol(m, n));

        }
 
        /* Handles: `.Dt TITLE' 
         *   --> title = TITLE, volume = local, msec = 0, arch = NULL
         */
 
        }
 
        /* Handles: `.Dt TITLE' 
         *   --> title = TITLE, volume = local, msec = 0, arch = NULL
         */
 

-       if (NULL == (m->meta.title = strdup(n->string)))
-               return(mdoc_nerr(m, m->last, EMALLOC));
+       if (NULL == (m->meta.title = strdup(nn->string)))
+               return(mdoc_nerr(m, n, EMALLOC));

 
 

-       if (NULL == (n = n->next)) {
+       if (NULL == (nn = nn->next)) {

                if (NULL == (m->meta.vol = strdup("local")))
                if (NULL == (m->meta.vol = strdup("local")))

-                       return(mdoc_nerr(m, m->last, EMALLOC));
-               return(post_prol(m));
+                       return(mdoc_nerr(m, n, EMALLOC));
+               return(post_prol(m, n));

        }
 
        /* Handles: `.Dt TITLE SEC'
        }
 
        /* Handles: `.Dt TITLE SEC'


@@ -461,19 +474,19 @@ post_dt(POST_ARGS)
         *       arch = NULL
         */
 
         *       arch = NULL
         */
 

-       cp = mdoc_a2msec(n->string);
+       cp = mdoc_a2msec(nn->string);

        if (cp) {
                if (NULL == (m->meta.vol = strdup(cp)))
        if (cp) {
                if (NULL == (m->meta.vol = strdup(cp)))

-                       return(mdoc_nerr(m, m->last, EMALLOC));
+                       return(mdoc_nerr(m, n, EMALLOC));

                errno = 0;
                errno = 0;

-               lval = strtol(n->string, &ep, 10);
-               if (n->string[0] != '\0' && *ep == '\0')
+               lval = strtol(nn->string, &ep, 10);
+               if (nn->string[0] != '\0' && *ep == '\0')

                        m->meta.msec = (int)lval;
                        m->meta.msec = (int)lval;

-       } else if (NULL == (m->meta.vol = strdup(n->string)))
-               return(mdoc_nerr(m, m->last, EMALLOC));
+       } else if (NULL == (m->meta.vol = strdup(nn->string)))
+               return(mdoc_nerr(m, n, EMALLOC));

 
 

-       if (NULL == (n = n->next))
-               return(post_prol(m));
+       if (NULL == (nn = nn->next))
+               return(post_prol(m, n));

 
        /* Handles: `.Dt TITLE SEC VOL'
         *   --> title = TITLE, volume = VOL is vol ?
 
        /* Handles: `.Dt TITLE SEC VOL'
         *   --> title = TITLE, volume = VOL is vol ?


@@ -482,25 +495,24 @@ post_dt(POST_ARGS)
         *               VOL
         */
 
         *               VOL
         */
 

-       cp = mdoc_a2vol(n->string);
+       cp = mdoc_a2vol(nn->string);

        if (cp) {
                free(m->meta.vol);
                if (NULL == (m->meta.vol = strdup(cp)))
        if (cp) {
                free(m->meta.vol);
                if (NULL == (m->meta.vol = strdup(cp)))

-                       return(mdoc_nerr(m, m->last, EMALLOC));
-               n = n->next;
+                       return(mdoc_nerr(m, n, EMALLOC));

        } else {
        } else {

-               cp = mdoc_a2arch(n->string);
+               cp = mdoc_a2arch(nn->string);

                if (NULL == cp) {
                        free(m->meta.vol);
                if (NULL == cp) {
                        free(m->meta.vol);

-                       if (NULL == (m->meta.vol = strdup(n->string)))
-                               return(mdoc_nerr(m, m->last, EMALLOC));
+                       if (NULL == (m->meta.vol = strdup(nn->string)))
+                               return(mdoc_nerr(m, n, EMALLOC));

                } else if (NULL == (m->meta.arch = strdup(cp)))
                } else if (NULL == (m->meta.arch = strdup(cp)))

-                       return(mdoc_nerr(m, m->last, EMALLOC));
+                       return(mdoc_nerr(m, n, EMALLOC));

        }       
 
        /* Ignore any subsequent parameters... */
 
        }       
 
        /* Ignore any subsequent parameters... */
 

-       return(post_prol(m));
+       return(post_prol(m, n));

 }
 
 
 }
 
 


@@ -514,25 +526,24 @@ post_os(POST_ARGS)
                free(m->meta.os);
 
        buf[0] = 0;
                free(m->meta.os);
 
        buf[0] = 0;

-       if ( ! concat(m, m->last->child, buf, sizeof(buf)))
+       if ( ! concat(m, n->child, buf, sizeof(buf)))

                return(0);
 
        if (0 == buf[0]) {
                if (-1 == uname(&utsname))
                return(0);
 
        if (0 == buf[0]) {
                if (-1 == uname(&utsname))

-                       return(mdoc_nerr(m, m->last, EUTSNAME));
+                       return(mdoc_nerr(m, n, EUTSNAME));

                if (strlcat(buf, utsname.sysname, 64) >= 64)
                if (strlcat(buf, utsname.sysname, 64) >= 64)

-                       return(mdoc_nerr(m, m->last, ETOOLONG));
+                       return(mdoc_nerr(m, n, ETOOLONG));

                if (strlcat(buf, " ", 64) >= 64)
                if (strlcat(buf, " ", 64) >= 64)

-                       return(mdoc_nerr(m, m->last, ETOOLONG));
+                       return(mdoc_nerr(m, n, ETOOLONG));

                if (strlcat(buf, utsname.release, 64) >= 64)
                if (strlcat(buf, utsname.release, 64) >= 64)

-                       return(mdoc_nerr(m, m->last, ETOOLONG));
+                       return(mdoc_nerr(m, n, ETOOLONG));

        }
 
        if (NULL == (m->meta.os = strdup(buf)))
        }
 
        if (NULL == (m->meta.os = strdup(buf)))

-               return(mdoc_nerr(m, m->last, EMALLOC));
+               return(mdoc_nerr(m, n, EMALLOC));

 
 

-       m->flags |= MDOC_PBODY;
-       return(post_prol(m));
+       return(post_prol(m, n));

 }
 
 
 }
 
 


@@ -541,9 +552,9 @@ post_os(POST_ARGS)
  * Uses the first head macro.
  */
 static int
  * Uses the first head macro.
  */
 static int

-post_bl_tagwidth(struct mdoc *m)
+post_bl_tagwidth(POST_ARGS)

 {
 {

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

        int                sz;
        char               buf[32];
 
        int                sz;
        char               buf[32];
 


@@ -552,75 +563,75 @@ post_bl_tagwidth(struct mdoc *m)
         * width if a macro.
         */
 
         * width if a macro.
         */
 

-       n = m->last->body->child;
-       if (n) {
-               assert(MDOC_BLOCK == n->type);
-               assert(MDOC_It == n->tok);
-               n = n->head->child;
+       nn = n->body->child;
+       if (nn) {
+               assert(MDOC_BLOCK == nn->type);
+               assert(MDOC_It == nn->tok);
+               nn = nn->head->child;

        }
 
        sz = 10; /* Default size. */
 
        }
 
        sz = 10; /* Default size. */
 

-       if (n) {
-               if (MDOC_TEXT != n->type) {
-                       if (0 == (sz = (int)mdoc_macro2len(n->tok)))
-                               if ( ! mdoc_nwarn(m, m->last, ENOWIDTH))
+       if (nn) {
+               if (MDOC_TEXT != nn->type) {
+                       if (0 == (sz = (int)mdoc_macro2len(nn->tok)))
+                               if ( ! mdoc_nwarn(m, n, ENOWIDTH))

                                        return(0);
                } else
                                        return(0);
                } else

-                       sz = (int)strlen(n->string) + 1;
+                       sz = (int)strlen(nn->string) + 1;

        } 
 
        if (-1 == snprintf(buf, sizeof(buf), "%dn", sz))
        } 
 
        if (-1 == snprintf(buf, sizeof(buf), "%dn", sz))

-               return(mdoc_nerr(m, m->last, ENUMFMT));
+               return(mdoc_nerr(m, n, ENUMFMT));

 
        /*
         * We have to dynamically add this to the macro's argument list.
         * We're guaranteed that a MDOC_Width doesn't already exist.
         */
 
 
        /*
         * We have to dynamically add this to the macro's argument list.
         * We're guaranteed that a MDOC_Width doesn't already exist.
         */
 

-       n = m->last;
-       assert(n->args);
-       sz = (int)(n->args->argc)++;
+       nn = n;
+       assert(nn->args);
+       sz = (int)(nn->args->argc)++;

 
 

-       n->args->argv = realloc(n->args->argv, 
-                       n->args->argc * sizeof(struct mdoc_argv));
+       nn->args->argv = realloc(nn->args->argv, 
+                       nn->args->argc * sizeof(struct mdoc_argv));

 
 

-       if (NULL == n->args->argv)
-               return(mdoc_nerr(m, m->last, EMALLOC));
+       if (NULL == nn->args->argv)
+               return(mdoc_nerr(m, n, EMALLOC));

 
 

-       n->args->argv[sz].arg = MDOC_Width;
-       n->args->argv[sz].line = m->last->line;
-       n->args->argv[sz].pos = m->last->pos;
-       n->args->argv[sz].sz = 1;
-       n->args->argv[sz].value = calloc(1, sizeof(char *));
+       nn->args->argv[sz].arg = MDOC_Width;
+       nn->args->argv[sz].line = n->line;
+       nn->args->argv[sz].pos = n->pos;
+       nn->args->argv[sz].sz = 1;
+       nn->args->argv[sz].value = calloc(1, sizeof(char *));

 
 

-       if (NULL == n->args->argv[sz].value)
-               return(mdoc_nerr(m, m->last, EMALLOC));
-       if (NULL == (n->args->argv[sz].value[0] = strdup(buf)))
-               return(mdoc_nerr(m, m->last, EMALLOC));
+       if (NULL == nn->args->argv[sz].value)
+               return(mdoc_nerr(m, n, EMALLOC));
+       if (NULL == (nn->args->argv[sz].value[0] = strdup(buf)))
+               return(mdoc_nerr(m, n, EMALLOC));

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

-post_bl_width(struct mdoc *m)
+post_bl_width(POST_ARGS)

 {
        size_t            width;
        int               i, tok;
        char              buf[32];
        char             *p;
 
 {
        size_t            width;
        int               i, tok;
        char              buf[32];
        char             *p;
 

-       if (NULL == m->last->args)
+       if (NULL == n->args)

                return(1);
 
                return(1);
 

-       for (i = 0; i < (int)m->last->args->argc; i++)
-               if (MDOC_Width == m->last->args->argv[i].arg)
+       for (i = 0; i < (int)n->args->argc; i++)
+               if (MDOC_Width == n->args->argv[i].arg)

                        break;
 
                        break;
 

-       if (i == (int)m->last->args->argc)
+       if (i == (int)n->args->argc)

                return(1);
                return(1);

-       p = m->last->args->argv[i].value[0];
+       p = n->args->argv[i].value[0];

 
        /*
         * If the value to -width is a macro, then we re-write it to be
 
        /*
         * If the value to -width is a macro, then we re-write it to be


@@ -629,47 +640,48 @@ post_bl_width(struct mdoc *m)
 
        if (0 == strcmp(p, "Ds"))
                width = 6;
 
        if (0 == strcmp(p, "Ds"))
                width = 6;

-       else if (MDOC_MAX == (tok = mdoc_hash_find(m->htab, p)))
+       else if (MDOC_MAX == (tok = mdoc_hash_find(p)))

                return(1);
        else if (0 == (width = mdoc_macro2len(tok))) 
                return(1);
        else if (0 == (width = mdoc_macro2len(tok))) 

-               return(mdoc_nwarn(m, m->last, ENOWIDTH));
+               return(mdoc_nwarn(m, n, ENOWIDTH));

 
        /* The value already exists: free and reallocate it. */
 
        if (-1 == snprintf(buf, sizeof(buf), "%zun", width))
 
        /* The value already exists: free and reallocate it. */
 
        if (-1 == snprintf(buf, sizeof(buf), "%zun", width))

-               return(mdoc_nerr(m, m->last, ENUMFMT));
+               return(mdoc_nerr(m, n, ENUMFMT));

 
 

-       free(m->last->args->argv[i].value[0]);
-       m->last->args->argv[i].value[0] = strdup(buf);
-       if (NULL == m->last->args->argv[i].value[0])
-               return(mdoc_nerr(m, m->last, EMALLOC));
+       free(n->args->argv[i].value[0]);
+       n->args->argv[i].value[0] = strdup(buf);
+       if (NULL == n->args->argv[i].value[0])
+               return(mdoc_nerr(m, n, EMALLOC));

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

+/* ARGSUSED */

 static int
 post_bl_head(POST_ARGS)
 {
        int                      i, c;
 static int
 post_bl_head(POST_ARGS)
 {
        int                      i, c;

-       struct mdoc_node        *n, *nn, *nnp;
+       struct mdoc_node        *np, *nn, *nnp;

 
 

-       if (NULL == m->last->child)
+       if (NULL == n->child)

                return(1);
 
                return(1);
 

-       n = m->last->parent;
-       assert(n->args);
+       np = n->parent;
+       assert(np->args);

 
 

-       for (c = 0; c < (int)n->args->argc; c++) 
-               if (MDOC_Column == n->args->argv[c].arg)
+       for (c = 0; c < (int)np->args->argc; c++) 
+               if (MDOC_Column == np->args->argv[c].arg)

                        break;
 
        /* Only process -column. */
 
                        break;
 
        /* Only process -column. */
 

-       if (c == (int)n->args->argc)
+       if (c == (int)np->args->argc)

                return(1);
        
                return(1);
        

-       assert(0 == n->args->argv[c].sz);
+       assert(0 == np->args->argv[c].sz);

 
        /*
         * Accomodate for new-style groff column syntax.  Shuffle the
 
        /*
         * Accomodate for new-style groff column syntax.  Shuffle the


@@ -677,20 +689,20 @@ post_bl_head(POST_ARGS)
         * column field.  Then, delete the head children.
         */
 
         * column field.  Then, delete the head children.
         */
 

-       n->args->argv[c].sz = (size_t)m->last->nchild;
-       n->args->argv[c].value = malloc
-               ((size_t)m->last->nchild * sizeof(char *));
+       np->args->argv[c].sz = (size_t)n->nchild;
+       np->args->argv[c].value = malloc
+               ((size_t)n->nchild * sizeof(char *));

 
 

-       for (i = 0, nn = m->last->child; nn; i++) {
-               n->args->argv[c].value[i] = nn->string;
+       for (i = 0, nn = n->child; nn; i++) {
+               np->args->argv[c].value[i] = nn->string;

                nn->string = NULL;
                nnp = nn;
                nn = nn->next;
                mdoc_node_free(nnp);
        }
 
                nn->string = NULL;
                nnp = nn;
                nn = nn->next;
                mdoc_node_free(nnp);
        }
 

-       m->last->nchild = 0;
-       m->last->child = NULL;
+       n->nchild = 0;
+       n->child = NULL;

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


@@ -701,9 +713,9 @@ post_bl(POST_ARGS)
 {
        int               i, r, len;
 
 {
        int               i, r, len;
 

-       if (MDOC_HEAD == m->last->type)
-               return(post_bl_head(m));
-       if (MDOC_BLOCK != m->last->type)
+       if (MDOC_HEAD == n->type)
+               return(post_bl_head(m, n));
+       if (MDOC_BLOCK != n->type)

                return(1);
 
        /*
                return(1);
 
        /*


@@ -714,20 +726,20 @@ post_bl(POST_ARGS)
         * rewritten into real lengths).
         */
 
         * rewritten into real lengths).
         */
 

-       len = (int)(m->last->args ? m->last->args->argc : 0);
+       len = (int)(n->args ? n->args->argc : 0);

 
        for (r = i = 0; i < len; i++) {
 
        for (r = i = 0; i < len; i++) {

-               if (MDOC_Tag == m->last->args->argv[i].arg)
+               if (MDOC_Tag == n->args->argv[i].arg)

                        r |= 1 << 0;
                        r |= 1 << 0;

-               if (MDOC_Width == m->last->args->argv[i].arg)
+               if (MDOC_Width == n->args->argv[i].arg)

                        r |= 1 << 1;
        }
 
        if (r & (1 << 0) && ! (r & (1 << 1))) {
                        r |= 1 << 1;
        }
 
        if (r & (1 << 0) && ! (r & (1 << 1))) {

-               if ( ! post_bl_tagwidth(m))
+               if ( ! post_bl_tagwidth(m, n))

                        return(0);
        } else if (r & (1 << 1))
                        return(0);
        } else if (r & (1 << 1))

-               if ( ! post_bl_width(m))
+               if ( ! post_bl_width(m, n))

                        return(0);
 
        return(1);
                        return(0);
 
        return(1);


@@ -737,20 +749,19 @@ post_bl(POST_ARGS)
 static int
 post_tilde(POST_ARGS)
 {
 static int
 post_tilde(POST_ARGS)
 {

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

 
 

-       if (m->last->child)
+       if (n->child)

                return(1);
        
                return(1);
        

-       n = m->last;
+       np = n;

        m->next = MDOC_NEXT_CHILD;
 
        /* XXX: not documented for `Lk'. */
        m->next = MDOC_NEXT_CHILD;
 
        /* XXX: not documented for `Lk'. */

-       if ( ! mdoc_word_alloc(m, m->last->line, m->last->pos, "~"))
+       if ( ! mdoc_word_alloc(m, n->line, n->pos, "~"))

                return(0);
                return(0);

+       m->last = np;

 
 

-       m->last = n;
-       m->next = MDOC_NEXT_SIBLING;

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


@@ -758,21 +769,19 @@ post_tilde(POST_ARGS)
 static int
 post_ar(POST_ARGS)
 {
 static int
 post_ar(POST_ARGS)
 {

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

 
 

-       if (m->last->child)
+       if (n->child)

                return(1);
        
                return(1);
        

-       n = m->last;
+       np = n;

        m->next = MDOC_NEXT_CHILD;
        m->next = MDOC_NEXT_CHILD;

-       if ( ! mdoc_word_alloc(m, m->last->line, m->last->pos, "file"))
+       if ( ! mdoc_word_alloc(m, n->line, n->pos, "file"))

                return(0);
                return(0);

-       m->next = MDOC_NEXT_SIBLING;
-       if ( ! mdoc_word_alloc(m, m->last->line, m->last->pos, "..."))
+       if ( ! mdoc_word_alloc(m, n->line, n->pos, "..."))

                return(0);
                return(0);

+       m->last = np;

 
 

-       m->last = n;
-       m->next = MDOC_NEXT_SIBLING;

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


@@ -783,46 +792,47 @@ post_dd(POST_ARGS)
        char              buf[64];
 
        buf[0] = 0;
        char              buf[64];
 
        buf[0] = 0;

-       if ( ! concat(m, m->last->child, buf, sizeof(buf)))
+       if ( ! concat(m, n->child, buf, sizeof(buf)))

                return(0);
 
        if (0 == (m->meta.date = mdoc_atotime(buf))) {
                return(0);
 
        if (0 == (m->meta.date = mdoc_atotime(buf))) {

-               if ( ! mdoc_nwarn(m, m->last, EBADDATE))
+               if ( ! mdoc_nwarn(m, n, EBADDATE))

                        return(0);
                m->meta.date = time(NULL);
        }
 
                        return(0);
                m->meta.date = time(NULL);
        }
 

-       return(post_prol(m));
+       return(post_prol(m, n));

 }
 
 
 static int
 post_prol(POST_ARGS)
 {
 }
 
 
 static int
 post_prol(POST_ARGS)
 {

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

 
 

-       /* 
-        * The end document shouldn't have the prologue macros as part
-        * of the syntax tree (they encompass only meta-data).  
-        */
+       /* Remove prologue macros from AST.  */

 
 

-       if (m->last->parent->child == m->last)
-               m->last->parent->child = m->last->prev;
-       if (m->last->prev)
-               m->last->prev->next = NULL;
+       if (n->parent->child == n)
+               n->parent->child = n->prev;
+       if (n->prev)
+               n->prev->next = NULL;

 
 

-       n = m->last;
-       assert(NULL == m->last->next);
+       np = n;
+       assert(NULL == n->next);

 
 

-       if (m->last->prev) {
-               m->last = m->last->prev;
+       if (n->prev) {
+               m->last = n->prev;

                m->next = MDOC_NEXT_SIBLING;
        } else {
                m->next = MDOC_NEXT_SIBLING;
        } else {

-               m->last = m->last->parent;
+               m->last = n->parent;

                m->next = MDOC_NEXT_CHILD;
        }
 
                m->next = MDOC_NEXT_CHILD;
        }
 

-       mdoc_node_freelist(n);
+       mdoc_node_freelist(np);
+
+       if (m->meta.title && m->meta.date && m->meta.os)
+               m->flags |= MDOC_PBODY;
+

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


@@ -837,24 +847,64 @@ pre_dl(PRE_ARGS)
 }
 
 
 }
 
 

+static int
+pre_offset(PRE_ARGS)
+{
+       int              i;
+
+       /* 
+        * Make sure that an empty offset produces an 8n length space as
+        * stipulated by mdoc.samples. 
+        */
+
+       assert(n->args);
+       for (i = 0; i < (int)n->args->argc; i++) {
+               if (MDOC_Offset != n->args->argv[i].arg) 
+                       continue;
+               if (n->args->argv[i].sz)
+                       break;
+               assert(1 == n->args->refcnt);
+               /* If no value set, length of <string>. */
+               n->args->argv[i].value = 
+               calloc(1, sizeof(char *));
+               if (NULL == n->args->argv[i].value)
+                       return(mdoc_nerr(m, n, EMALLOC));
+               n->args->argv[i].sz++;
+               n->args->argv[i].value[0] = strdup("8n");
+               if (NULL == n->args->argv[i].value[0])
+                       return(mdoc_nerr(m, n, EMALLOC));
+               break;
+       }
+
+       return(1);
+}
+
+
+static int
+pre_bl(PRE_ARGS)
+{
+
+       return(MDOC_BLOCK == n->type ? pre_offset(m, n) : 1);
+}
+
+

 static int
 pre_bd(PRE_ARGS)
 {
        int              i;
 
 static int
 pre_bd(PRE_ARGS)
 {
        int              i;
 

+       if (MDOC_BLOCK == n->type)
+               return(pre_offset(m, n));

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

-       /* Enter literal context if `Bd -literal' or * -unfilled'. */
+       /* Enter literal context if `Bd -literal' or `-unfilled'. */

 
        for (n = n->parent, i = 0; i < (int)n->args->argc; i++)
                if (MDOC_Literal == n->args->argv[i].arg)
 
        for (n = n->parent, i = 0; i < (int)n->args->argc; i++)
                if (MDOC_Literal == n->args->argv[i].arg)

-                       break;
+                       m->flags |= MDOC_LITERAL;

                else if (MDOC_Unfilled == n->args->argv[i].arg)
                else if (MDOC_Unfilled == n->args->argv[i].arg)

-                       break;
-
-       if (i < (int)n->args->argc)
-               m->flags |= MDOC_LITERAL;
+                       m->flags |= MDOC_LITERAL;

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


@@ -864,9 +914,71 @@ static int
 post_display(POST_ARGS)
 {
 
 post_display(POST_ARGS)
 {
 

-       if (MDOC_BODY == m->last->type)
+       if (MDOC_BODY == n->type)

                m->flags &= ~MDOC_LITERAL;
        return(1);
 }
 
 
                m->flags &= ~MDOC_LITERAL;
        return(1);
 }
 
 

+static inline int
+order_rs(int t)
+{
+       int             i;
+
+       for (i = 0; i < RSORD_MAX; i++)
+               if (rsord[i] == t)
+                       return(i);
+
+       abort();
+       /* NOTREACHED */
+}
+
+
+/* ARGSUSED */
+static int
+post_rs(POST_ARGS)
+{
+       struct mdoc_node        *nn, *next, *prev;
+       int                      o;
+
+       if (MDOC_BLOCK != n->type)
+               return(1);
+
+       assert(n->body->child);
+       for (next = NULL, nn = n->body->child->next; nn; nn = next) {
+               o = order_rs(nn->tok);
+
+               /* Remove `nn' from the chain. */
+               next = nn->next;
+               if (next)
+                       next->prev = nn->prev;
+
+               prev = nn->prev;
+               if (prev)
+                       prev->next = nn->next;
+
+               nn->prev = nn->next = NULL;
+
+               /* 
+                * Scan back until we reach a node that's ordered before
+                * us, then set ourselves as being the next. 
+                */
+               for ( ; prev; prev = prev->prev)
+                       if (order_rs(prev->tok) <= o)
+                               break;
+
+               nn->prev = prev;
+               if (prev) {
+                       if (prev->next)
+                               prev->next->prev = nn;
+                       nn->next = prev->next;
+                       prev->next = nn;
+                       continue;
+               } 
+
+               n->body->child->prev = nn;
+               nn->next = n->body->child;
+               n->body->child = nn;
+       }
+       return(1);
+}