Add manual page for mandoc-db (mostly to document the file format of

[mandoc.git] / mdoc.c

diff --git a/mdoc.c b/mdoc.c
index 8e46ff4995c148d3b0932a7e6947c6f90b528336..ea3fda2691686ff647825f788e3df89d390364a6 100644 (file)
--- a/mdoc.c
+++ b/mdoc.c
@@ -1,6 +1,6 @@
-/*     $Id: mdoc.c,v 1.170 2010/12/16 17:14:48 kristaps Exp $ */
+/*     $Id: mdoc.c,v 1.188 2011/03/28 23:52:13 kristaps Exp $ */

 /*
 /*

- * Copyright (c) 2008, 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv>
+ * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>

  * Copyright (c) 2010 Ingo Schwarze <schwarze@openbsd.org>
  *
  * Permission to use, copy, modify, and distribute this software for any
  * Copyright (c) 2010 Ingo Schwarze <schwarze@openbsd.org>
  *
  * Permission to use, copy, modify, and distribute this software for any


@@ -28,6 +28,7 @@
 #include <string.h>
 #include <time.h>
 
 #include <string.h>
 #include <time.h>
 

+#include "mdoc.h"

 #include "mandoc.h"
 #include "libmdoc.h"
 #include "libmandoc.h"
 #include "mandoc.h"
 #include "libmdoc.h"
 #include "libmandoc.h"


@@ -99,12 +100,12 @@ static     int               node_append(struct mdoc *,
 static int               mdoc_ptext(struct mdoc *, int, char *, int);
 static int               mdoc_pmacro(struct mdoc *, int, char *, int);
 
 static int               mdoc_ptext(struct mdoc *, int, char *, int);
 static int               mdoc_pmacro(struct mdoc *, int, char *, int);
 

-

 const struct mdoc_node *
 mdoc_node(const struct mdoc *m)
 {
 
 const struct mdoc_node *
 mdoc_node(const struct mdoc *m)
 {
 

-       return(MDOC_HALT & m->flags ? NULL : m->first);
+       assert( ! (MDOC_HALT & m->flags));
+       return(m->first);

 }
 
 
 }
 
 


@@ -112,7 +113,8 @@ const struct mdoc_meta *
 mdoc_meta(const struct mdoc *m)
 {
 
 mdoc_meta(const struct mdoc *m)
 {
 

-       return(MDOC_HALT & m->flags ? NULL : &m->meta);
+       assert( ! (MDOC_HALT & m->flags));
+       return(&m->meta);

 }
 
 
 }
 
 


@@ -137,6 +139,8 @@ mdoc_free1(struct mdoc *mdoc)
                free(mdoc->meta.vol);
        if (mdoc->meta.msec)
                free(mdoc->meta.msec);
                free(mdoc->meta.vol);
        if (mdoc->meta.msec)
                free(mdoc->meta.msec);

+       if (mdoc->meta.date)
+               free(mdoc->meta.date);

 }
 
 
 }
 
 


@@ -189,14 +193,13 @@ mdoc_free(struct mdoc *mdoc)
  * Allocate volatile and non-volatile parse resources.  
  */
 struct mdoc *
  * Allocate volatile and non-volatile parse resources.  
  */
 struct mdoc *

-mdoc_alloc(struct regset *regs, void *data, mandocmsg msg)
+mdoc_alloc(struct regset *regs, struct mparse *parse)

 {
        struct mdoc     *p;
 
        p = mandoc_calloc(1, sizeof(struct mdoc));
 
 {
        struct mdoc     *p;
 
        p = mandoc_calloc(1, sizeof(struct mdoc));
 

-       p->msg = msg;
-       p->data = data;
+       p->parse = parse;

        p->regs = regs;
 
        mdoc_hash_init();
        p->regs = regs;
 
        mdoc_hash_init();


@@ -213,14 +216,61 @@ int
 mdoc_endparse(struct mdoc *m)
 {
 
 mdoc_endparse(struct mdoc *m)
 {
 

-       if (MDOC_HALT & m->flags)
-               return(0);
-       else if (mdoc_macroend(m))
+       assert( ! (MDOC_HALT & m->flags));
+       if (mdoc_macroend(m))

                return(1);
        m->flags |= MDOC_HALT;
        return(0);
 }
 
                return(1);
        m->flags |= MDOC_HALT;
        return(0);
 }
 

+int
+mdoc_addeqn(struct mdoc *m, const struct eqn *ep)
+{
+       struct mdoc_node *n;
+
+       assert( ! (MDOC_HALT & m->flags));
+
+       /* No text before an initial macro. */
+
+       if (SEC_NONE == m->lastnamed) {
+               mdoc_pmsg(m, ep->line, ep->pos, MANDOCERR_NOTEXT);
+               return(1);
+       }
+
+       n = node_alloc(m, ep->line, ep->pos, MDOC_MAX, MDOC_EQN);
+       n->eqn = ep;
+
+       if ( ! node_append(m, n))
+               return(0);
+
+       m->next = MDOC_NEXT_SIBLING;
+       return(1);
+}
+
+int
+mdoc_addspan(struct mdoc *m, const struct tbl_span *sp)
+{
+       struct mdoc_node *n;
+
+       assert( ! (MDOC_HALT & m->flags));
+
+       /* No text before an initial macro. */
+
+       if (SEC_NONE == m->lastnamed) {
+               mdoc_pmsg(m, sp->line, 0, MANDOCERR_NOTEXT);
+               return(1);
+       }
+
+       n = node_alloc(m, sp->line, 0, MDOC_MAX, MDOC_TBL);
+       n->span = sp;
+
+       if ( ! node_append(m, n))
+               return(0);
+
+       m->next = MDOC_NEXT_SIBLING;
+       return(1);
+}
+

 
 /*
  * Main parse routine.  Parses a single line -- really just hands off to
 
 /*
  * Main parse routine.  Parses a single line -- really just hands off to


@@ -230,8 +280,7 @@ int
 mdoc_parseln(struct mdoc *m, int ln, char *buf, int offs)
 {
 
 mdoc_parseln(struct mdoc *m, int ln, char *buf, int offs)
 {
 

-       if (MDOC_HALT & m->flags)
-               return(0);
+       assert( ! (MDOC_HALT & m->flags));

 
        m->flags |= MDOC_NEWLINE;
 
 
        m->flags |= MDOC_NEWLINE;
 


@@ -248,27 +297,11 @@ mdoc_parseln(struct mdoc *m, int ln, char *buf, int offs)
                        m->flags &= ~MDOC_SYNOPSIS;
        }
 
                        m->flags &= ~MDOC_SYNOPSIS;
        }
 

-       return(('.' == buf[offs] || '\'' == buf[offs]) ? 
+       return(mandoc_getcontrol(buf, &offs) ?

                        mdoc_pmacro(m, ln, buf, offs) :
                        mdoc_ptext(m, ln, buf, offs));
 }
 
                        mdoc_pmacro(m, ln, buf, offs) :
                        mdoc_ptext(m, ln, buf, offs));
 }
 

-
-int
-mdoc_vmsg(struct mdoc *mdoc, enum mandocerr t, 
-               int ln, int pos, const char *fmt, ...)
-{
-       char             buf[256];
-       va_list          ap;
-
-       va_start(ap, fmt);
-       vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
-       va_end(ap);
-
-       return((*mdoc->msg)(t, mdoc->data, ln, pos, buf));
-}
-
-

 int
 mdoc_macro(MACRO_PROT_ARGS)
 {
 int
 mdoc_macro(MACRO_PROT_ARGS)
 {


@@ -277,15 +310,16 @@ mdoc_macro(MACRO_PROT_ARGS)
        /* If we're in the body, deny prologue calls. */
 
        if (MDOC_PROLOGUE & mdoc_macros[tok].flags && 
        /* If we're in the body, deny prologue calls. */
 
        if (MDOC_PROLOGUE & mdoc_macros[tok].flags && 

-                       MDOC_PBODY & m->flags)
-               return(mdoc_pmsg(m, line, ppos, MANDOCERR_BADBODY));
+                       MDOC_PBODY & m->flags) {
+               mdoc_pmsg(m, line, ppos, MANDOCERR_BADBODY);
+               return(1);
+       }

 
        /* If we're in the prologue, deny "body" macros.  */
 
        if ( ! (MDOC_PROLOGUE & mdoc_macros[tok].flags) && 
                        ! (MDOC_PBODY & m->flags)) {
 
        /* If we're in the prologue, deny "body" macros.  */
 
        if ( ! (MDOC_PROLOGUE & mdoc_macros[tok].flags) && 
                        ! (MDOC_PBODY & m->flags)) {

-               if ( ! mdoc_pmsg(m, line, ppos, MANDOCERR_BADPROLOG))
-                       return(0);
+               mdoc_pmsg(m, line, ppos, MANDOCERR_BADPROLOG);

                if (NULL == m->meta.msec)
                        m->meta.msec = mandoc_strdup("1");
                if (NULL == m->meta.title)
                if (NULL == m->meta.msec)
                        m->meta.msec = mandoc_strdup("1");
                if (NULL == m->meta.title)


@@ -294,8 +328,9 @@ mdoc_macro(MACRO_PROT_ARGS)
                        m->meta.vol = mandoc_strdup("LOCAL");
                if (NULL == m->meta.os)
                        m->meta.os = mandoc_strdup("LOCAL");
                        m->meta.vol = mandoc_strdup("LOCAL");
                if (NULL == m->meta.os)
                        m->meta.os = mandoc_strdup("LOCAL");

-               if (0 == m->meta.date)
-                       m->meta.date = time(NULL);
+               if (NULL == m->meta.date)
+                       m->meta.date = mandoc_normdate
+                               (m->parse, NULL, line, ppos);

                m->flags |= MDOC_PBODY;
        }
 
                m->flags |= MDOC_PBODY;
        }
 


@@ -328,6 +363,23 @@ node_append(struct mdoc *mdoc, struct mdoc_node *p)
 
        p->parent->nchild++;
 
 
        p->parent->nchild++;
 

+       /*
+        * Copy over the normalised-data pointer of our parent.  Not
+        * everybody has one, but copying a null pointer is fine.
+        */
+
+       switch (p->type) {
+       case (MDOC_BODY):
+               /* FALLTHROUGH */
+       case (MDOC_TAIL):
+               /* FALLTHROUGH */
+       case (MDOC_HEAD):
+               p->norm = p->parent->norm;
+               break;
+       default:
+               break;
+       }
+

        if ( ! mdoc_valid_pre(mdoc, p))
                return(0);
 
        if ( ! mdoc_valid_pre(mdoc, p))
                return(0);
 


@@ -353,6 +405,8 @@ node_append(struct mdoc *mdoc, struct mdoc_node *p)
        mdoc->last = p;
 
        switch (p->type) {
        mdoc->last = p;
 
        switch (p->type) {

+       case (MDOC_TBL):
+               /* FALLTHROUGH */

        case (MDOC_TEXT):
                if ( ! mdoc_valid_post(mdoc))
                        return(0);
        case (MDOC_TEXT):
                if ( ! mdoc_valid_post(mdoc))
                        return(0);


@@ -460,6 +514,21 @@ mdoc_block_alloc(struct mdoc *m, int line, int pos,
        p->args = args;
        if (p->args)
                (args->refcnt)++;
        p->args = args;
        if (p->args)
                (args->refcnt)++;

+
+       switch (tok) {
+       case (MDOC_Bd):
+               /* FALLTHROUGH */
+       case (MDOC_Bf):
+               /* FALLTHROUGH */
+       case (MDOC_Bl):
+               /* FALLTHROUGH */
+       case (MDOC_Rs):
+               p->norm = mandoc_calloc(1, sizeof(union mdoc_data));
+               break;
+       default:
+               break;
+       }
+

        if ( ! node_append(m, p))
                return(0);
        m->next = MDOC_NEXT_CHILD;
        if ( ! node_append(m, p))
                return(0);
        m->next = MDOC_NEXT_CHILD;


@@ -477,13 +546,21 @@ mdoc_elem_alloc(struct mdoc *m, int line, int pos,
        p->args = args;
        if (p->args)
                (args->refcnt)++;
        p->args = args;
        if (p->args)
                (args->refcnt)++;

+
+       switch (tok) {
+       case (MDOC_An):
+               p->norm = mandoc_calloc(1, sizeof(union mdoc_data));
+               break;
+       default:
+               break;
+       }
+

        if ( ! node_append(m, p))
                return(0);
        m->next = MDOC_NEXT_CHILD;
        return(1);
 }
 
        if ( ! node_append(m, p))
                return(0);
        m->next = MDOC_NEXT_CHILD;
        return(1);
 }
 

-

 int
 mdoc_word_alloc(struct mdoc *m, int line, int pos, const char *p)
 {
 int
 mdoc_word_alloc(struct mdoc *m, int line, int pos, const char *p)
 {


@@ -511,25 +588,8 @@ static void
 mdoc_node_free(struct mdoc_node *p)
 {
 
 mdoc_node_free(struct mdoc_node *p)
 {
 

-       /*
-        * XXX: if these end up being problematic in terms of memory
-        * management and dereferencing freed blocks, then make them
-        * into reference-counted double-pointers.
-        */
-
-       if (MDOC_Bd == p->tok && MDOC_BLOCK == p->type)
-               if (p->data.Bd)
-                       free(p->data.Bd);
-       if (MDOC_Bl == p->tok && MDOC_BLOCK == p->type)
-               if (p->data.Bl)
-                       free(p->data.Bl);
-       if (MDOC_Bf == p->tok && MDOC_HEAD == p->type)
-               if (p->data.Bf)
-                       free(p->data.Bf);
-       if (MDOC_An == p->tok)
-               if (p->data.An)
-                       free(p->data.An);
-
+       if (MDOC_BLOCK == p->type || MDOC_ELEM == p->type)
+               free(p->norm);

        if (p->string)
                free(p->string);
        if (p->args)
        if (p->string)
                free(p->string);
        if (p->args)


@@ -601,17 +661,12 @@ mdoc_ptext(struct mdoc *m, int line, char *buf, int offs)
        char             *c, *ws, *end;
        struct mdoc_node *n;
 
        char             *c, *ws, *end;
        struct mdoc_node *n;
 

-       /* Ignore bogus comments. */
-
-       if ('\\' == buf[offs] && 
-                       '.' == buf[offs + 1] && 
-                       '"' == buf[offs + 2])
-               return(mdoc_pmsg(m, line, offs, MANDOCERR_BADCOMMENT));
-

        /* No text before an initial macro. */
 
        /* No text before an initial macro. */
 

-       if (SEC_NONE == m->lastnamed)
-               return(mdoc_pmsg(m, line, offs, MANDOCERR_NOTEXT));
+       if (SEC_NONE == m->lastnamed) {
+               mdoc_pmsg(m, line, offs, MANDOCERR_NOTEXT);
+               return(1);
+       }

 
        assert(m->last);
        n = m->last;
 
        assert(m->last);
        n = m->last;


@@ -624,7 +679,7 @@ mdoc_ptext(struct mdoc *m, int line, char *buf, int offs)
         */
 
        if (MDOC_Bl == n->tok && MDOC_BODY == n->type &&
         */
 
        if (MDOC_Bl == n->tok && MDOC_BODY == n->type &&

-                       LIST_column == n->data.Bl->type) {
+                       LIST_column == n->norm->Bl.type) {

                /* `Bl' is open without any children. */
                m->flags |= MDOC_FREECOL;
                return(mdoc_macro(m, MDOC_It, line, offs, &offs, buf));
                /* `Bl' is open without any children. */
                m->flags |= MDOC_FREECOL;
                return(mdoc_macro(m, MDOC_It, line, offs, &offs, buf));


@@ -633,7 +688,7 @@ mdoc_ptext(struct mdoc *m, int line, char *buf, int offs)
        if (MDOC_It == n->tok && MDOC_BLOCK == n->type &&
                        NULL != n->parent &&
                        MDOC_Bl == n->parent->tok &&
        if (MDOC_It == n->tok && MDOC_BLOCK == n->type &&
                        NULL != n->parent &&
                        MDOC_Bl == n->parent->tok &&

-                       LIST_column == n->parent->data.Bl->type) {
+                       LIST_column == n->parent->norm->Bl.type) {

                /* `Bl' has block-level `It' children. */
                m->flags |= MDOC_FREECOL;
                return(mdoc_macro(m, MDOC_It, line, offs, &offs, buf));
                /* `Bl' has block-level `It' children. */
                m->flags |= MDOC_FREECOL;
                return(mdoc_macro(m, MDOC_It, line, offs, &offs, buf));


@@ -686,12 +741,10 @@ mdoc_ptext(struct mdoc *m, int line, char *buf, int offs)
        *end = '\0';
 
        if (ws)
        *end = '\0';
 
        if (ws)

-               if ( ! mdoc_pmsg(m, line, (int)(ws-buf), MANDOCERR_EOLNSPACE))
-                       return(0);
+               mdoc_pmsg(m, line, (int)(ws-buf), MANDOCERR_EOLNSPACE);

 
        if ('\0' == buf[offs] && ! (MDOC_LITERAL & m->flags)) {
 
        if ('\0' == buf[offs] && ! (MDOC_LITERAL & m->flags)) {

-               if ( ! mdoc_pmsg(m, line, (int)(c-buf), MANDOCERR_NOBLANKLN))
-                       return(0);
+               mdoc_pmsg(m, line, (int)(c-buf), MANDOCERR_NOBLANKLN);

 
                /*
                 * Insert a `sp' in the case of a blank line.  Technically,
 
                /*
                 * Insert a `sp' in the case of a blank line.  Technically,


@@ -734,65 +787,57 @@ static int
 mdoc_pmacro(struct mdoc *m, int ln, char *buf, int offs)
 {
        enum mdoct        tok;
 mdoc_pmacro(struct mdoc *m, int ln, char *buf, int offs)
 {
        enum mdoct        tok;

-       int               i, j, sv;
+       int               i, sv;

        char              mac[5];
        struct mdoc_node *n;
 
        char              mac[5];
        struct mdoc_node *n;
 

-       /* Empty lines are ignored. */
+       /* Empty post-control lines are ignored. */

 
 

-       offs++;
-
-       if ('\0' == buf[offs])
+       if ('"' == buf[offs]) {
+               mdoc_pmsg(m, ln, offs, MANDOCERR_BADCOMMENT);
+               return(1);
+       } else if ('\0' == buf[offs])

                return(1);
 
                return(1);
 

-       i = offs;
-
-       /* Accept tabs/whitespace after the initial control char. */
-
-       if (' ' == buf[i] || '\t' == buf[i]) {
-               i++;
-               while (buf[i] && (' ' == buf[i] || '\t' == buf[i]))
-                       i++;
-               if ('\0' == buf[i])
-                       return(1);
-       }
-
-       sv = i;
+       sv = offs;

 
        /* 
         * Copy the first word into a nil-terminated buffer.
         * Stop copying when a tab, space, or eoln is encountered.
         */
 
 
        /* 
         * Copy the first word into a nil-terminated buffer.
         * Stop copying when a tab, space, or eoln is encountered.
         */
 

-       j = 0;
-       while (j < 4 && '\0' != buf[i] && ' ' != buf[i] && '\t' != buf[i])
-               mac[j++] = buf[i++];
-       mac[j] = '\0';
+       i = 0;
+       while (i < 4 && '\0' != buf[offs] && 
+                       ' ' != buf[offs] && '\t' != buf[offs])
+               mac[i++] = buf[offs++];
+
+       mac[i] = '\0';
+
+       tok = (i > 1 || i < 4) ? mdoc_hash_find(mac) : MDOC_MAX;

 
 

-       tok = (j > 1 || j < 4) ? mdoc_hash_find(mac) : MDOC_MAX;

        if (MDOC_MAX == tok) {
        if (MDOC_MAX == tok) {

-               mdoc_vmsg(m, MANDOCERR_MACRO, ln, sv, "%s", buf + sv - 1);
+               mandoc_vmsg(MANDOCERR_MACRO, m->parse, 
+                               ln, sv, "%s", buf + sv - 1);

                return(1);
        }
 
        /* Disregard the first trailing tab, if applicable. */
 
                return(1);
        }
 
        /* Disregard the first trailing tab, if applicable. */
 

-       if ('\t' == buf[i])
-               i++;
+       if ('\t' == buf[offs])
+               offs++;

 
        /* Jump to the next non-whitespace word. */
 
 
        /* Jump to the next non-whitespace word. */
 

-       while (buf[i] && ' ' == buf[i])
-               i++;
+       while (buf[offs] && ' ' == buf[offs])
+               offs++;

 
        /* 
         * Trailing whitespace.  Note that tabs are allowed to be passed
         * into the parser as "text", so we only warn about spaces here.
         */
 
 
        /* 
         * Trailing whitespace.  Note that tabs are allowed to be passed
         * into the parser as "text", so we only warn about spaces here.
         */
 

-       if ('\0' == buf[i] && ' ' == buf[i - 1])
-               if ( ! mdoc_pmsg(m, ln, i - 1, MANDOCERR_EOLNSPACE))
-                       goto err;
+       if ('\0' == buf[offs] && ' ' == buf[offs - 1])
+               mdoc_pmsg(m, ln, offs - 1, MANDOCERR_EOLNSPACE);

 
        /*
         * If an initial macro or a list invocation, divert directly
 
        /*
         * If an initial macro or a list invocation, divert directly


@@ -800,7 +845,7 @@ mdoc_pmacro(struct mdoc *m, int ln, char *buf, int offs)
         */
 
        if (NULL == m->last || MDOC_It == tok || MDOC_El == tok) {
         */
 
        if (NULL == m->last || MDOC_It == tok || MDOC_El == tok) {

-               if ( ! mdoc_macro(m, tok, ln, sv, &i, buf)) 
+               if ( ! mdoc_macro(m, tok, ln, sv, &offs, buf)) 

                        goto err;
                return(1);
        }
                        goto err;
                return(1);
        }


@@ -814,7 +859,7 @@ mdoc_pmacro(struct mdoc *m, int ln, char *buf, int offs)
         */
 
        if (MDOC_Bl == n->tok && MDOC_BODY == n->type &&
         */
 
        if (MDOC_Bl == n->tok && MDOC_BODY == n->type &&

-                       LIST_column == n->data.Bl->type) {
+                       LIST_column == n->norm->Bl.type) {

                m->flags |= MDOC_FREECOL;
                if ( ! mdoc_macro(m, MDOC_It, ln, sv, &sv, buf))
                        goto err;
                m->flags |= MDOC_FREECOL;
                if ( ! mdoc_macro(m, MDOC_It, ln, sv, &sv, buf))
                        goto err;


@@ -830,7 +875,7 @@ mdoc_pmacro(struct mdoc *m, int ln, char *buf, int offs)
        if (MDOC_It == n->tok && MDOC_BLOCK == n->type &&
                        NULL != n->parent &&
                        MDOC_Bl == n->parent->tok &&
        if (MDOC_It == n->tok && MDOC_BLOCK == n->type &&
                        NULL != n->parent &&
                        MDOC_Bl == n->parent->tok &&

-                       LIST_column == n->parent->data.Bl->type) {
+                       LIST_column == n->parent->norm->Bl.type) {

                m->flags |= MDOC_FREECOL;
                if ( ! mdoc_macro(m, MDOC_It, ln, sv, &sv, buf)) 
                        goto err;
                m->flags |= MDOC_FREECOL;
                if ( ! mdoc_macro(m, MDOC_It, ln, sv, &sv, buf)) 
                        goto err;


@@ -839,7 +884,7 @@ mdoc_pmacro(struct mdoc *m, int ln, char *buf, int offs)
 
        /* Normal processing of a macro. */
 
 
        /* Normal processing of a macro. */
 

-       if ( ! mdoc_macro(m, tok, ln, sv, &i, buf)) 
+       if ( ! mdoc_macro(m, tok, ln, sv, &offs, buf)) 

                goto err;
 
        return(1);
                goto err;
 
        return(1);


@@ -850,4 +895,48 @@ err:       /* Error out. */
        return(0);
 }
 
        return(0);
 }
 

+enum mdelim
+mdoc_isdelim(const char *p)
+{
+
+       if ('\0' == p[0])
+               return(DELIM_NONE);

 
 

+       if ('\0' == p[1])
+               switch (p[0]) {
+               case('('):
+                       /* FALLTHROUGH */
+               case('['):
+                       return(DELIM_OPEN);
+               case('|'):
+                       return(DELIM_MIDDLE);
+               case('.'):
+                       /* FALLTHROUGH */
+               case(','):
+                       /* FALLTHROUGH */
+               case(';'):
+                       /* FALLTHROUGH */
+               case(':'):
+                       /* FALLTHROUGH */
+               case('?'):
+                       /* FALLTHROUGH */
+               case('!'):
+                       /* FALLTHROUGH */
+               case(')'):
+                       /* FALLTHROUGH */
+               case(']'):
+                       return(DELIM_CLOSE);
+               default:
+                       return(DELIM_NONE);
+               }
+
+       if ('\\' != p[0])
+               return(DELIM_NONE);
+
+       if (0 == strcmp(p + 1, "."))
+               return(DELIM_CLOSE);
+       if (0 == strcmp(p + 1, "*(Ba"))
+               return(DELIM_MIDDLE);
+
+       return(DELIM_NONE);
+}