"Groff allows the initial macro on a line to be delimited by a space of

[mandoc.git] / mdoc_argv.c

diff --git a/mdoc_argv.c b/mdoc_argv.c
index 3b6ad3209f31958e98b69d972efd7993ee7e6250..453d1146905f37c84f7bc9fef8a3936c19a32104 100644 (file)
--- a/mdoc_argv.c
+++ b/mdoc_argv.c
@@ -1,6 +1,6 @@
-/*     $Id: mdoc_argv.c,v 1.12 2009/07/11 20:47:52 kristaps Exp $ */
+/*     $Id: mdoc_argv.c,v 1.58 2010/07/21 09:36:41 kristaps Exp $ */

 /*
 /*

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

  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above


@@ -14,6 +14,10 @@
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */

+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+

 #include <sys/types.h>
 
 #include <assert.h>
 #include <sys/types.h>
 
 #include <assert.h>


@@ -22,7 +26,9 @@
 #include <stdio.h>
 #include <string.h>
 
 #include <stdio.h>
 #include <string.h>
 

+#include "mandoc.h"

 #include "libmdoc.h"
 #include "libmdoc.h"

+#include "libmandoc.h"

 
 /*
  * Routines to parse arguments of macros.  Arguments follow the syntax
 
 /*
  * Routines to parse arguments of macros.  Arguments follow the syntax


@@ -32,13 +38,6 @@
  * There's no limit to the number or arguments that may be allocated.
  */
 
  * There's no limit to the number or arguments that may be allocated.
  */
 

-/* FIXME .Bf Li raises "macro-like parameter". */
-
-#define        ARGS_QUOTED     (1 << 0)
-#define        ARGS_DELIM      (1 << 1)
-#define        ARGS_TABSEP     (1 << 2)
-#define        ARGS_ARGVLIKE   (1 << 3)
-

 #define        ARGV_NONE       (1 << 0)
 #define        ARGV_SINGLE     (1 << 1)
 #define        ARGV_MULTI      (1 << 2)
 #define        ARGV_NONE       (1 << 0)
 #define        ARGV_SINGLE     (1 << 1)
 #define        ARGV_MULTI      (1 << 2)


@@ -46,8 +45,8 @@
 
 #define        MULTI_STEP       5
 
 
 #define        MULTI_STEP       5
 

-static int              argv_a2arg(int, const char *);
-static int              args(struct mdoc *, int, int *, 
+static enum mdocargt    argv_a2arg(enum mdoct, const char *);
+static enum margserr    args(struct mdoc *, int, int *, 

                                char *, int, char **);
 static int              argv(struct mdoc *, int, 
                                struct mdoc_argv *, int *, char *);
                                char *, int, char **);
 static int              argv(struct mdoc *, int, 
                                struct mdoc_argv *, int *, char *);


@@ -66,8 +65,8 @@ static        int mdoc_argvflags[MDOC_ARG_MAX] = {
        ARGV_NONE,      /* MDOC_Ragged */
        ARGV_NONE,      /* MDOC_Unfilled */
        ARGV_NONE,      /* MDOC_Literal */
        ARGV_NONE,      /* MDOC_Ragged */
        ARGV_NONE,      /* MDOC_Unfilled */
        ARGV_NONE,      /* MDOC_Literal */

-       ARGV_NONE,      /* MDOC_File */
-       ARGV_SINGLE,    /* MDOC_Offset */
+       ARGV_SINGLE,    /* MDOC_File */
+       ARGV_OPT_SINGLE, /* MDOC_Offset */

        ARGV_NONE,      /* MDOC_Bullet */
        ARGV_NONE,      /* MDOC_Dash */
        ARGV_NONE,      /* MDOC_Hyphen */
        ARGV_NONE,      /* MDOC_Bullet */
        ARGV_NONE,      /* MDOC_Dash */
        ARGV_NONE,      /* MDOC_Hyphen */


@@ -81,7 +80,7 @@ static        int mdoc_argvflags[MDOC_ARG_MAX] = {
        ARGV_MULTI,     /* MDOC_Column */
        ARGV_SINGLE,    /* MDOC_Width */
        ARGV_NONE,      /* MDOC_Compact */
        ARGV_MULTI,     /* MDOC_Column */
        ARGV_SINGLE,    /* MDOC_Width */
        ARGV_NONE,      /* MDOC_Compact */

-       ARGV_OPT_SINGLE, /* MDOC_Std */
+       ARGV_NONE,      /* MDOC_Std */

        ARGV_NONE,      /* MDOC_Filled */
        ARGV_NONE,      /* MDOC_Words */
        ARGV_NONE,      /* MDOC_Emphasis */
        ARGV_NONE,      /* MDOC_Filled */
        ARGV_NONE,      /* MDOC_Words */
        ARGV_NONE,      /* MDOC_Emphasis */


@@ -94,54 +93,54 @@ static      int mdoc_argflags[MDOC_MAX] = {
        0, /* Dd */
        0, /* Dt */
        0, /* Os */
        0, /* Dd */
        0, /* Dt */
        0, /* Os */

-       ARGS_QUOTED, /* Sh */
-       ARGS_QUOTED, /* Ss */ 
+       0, /* Sh */
+       0, /* Ss */ 

        ARGS_DELIM, /* Pp */ 
        ARGS_DELIM, /* D1 */
        ARGS_DELIM, /* Pp */ 
        ARGS_DELIM, /* D1 */

-       ARGS_DELIM | ARGS_QUOTED, /* Dl */
+       ARGS_DELIM, /* Dl */

        0, /* Bd */
        0, /* Ed */
        0, /* Bd */
        0, /* Ed */

-       ARGS_QUOTED, /* Bl */
+       0, /* Bl */

        0, /* El */
        0, /* It */
        ARGS_DELIM, /* Ad */ 
        ARGS_DELIM, /* An */
        0, /* El */
        0, /* It */
        ARGS_DELIM, /* Ad */ 
        ARGS_DELIM, /* An */

-       ARGS_DELIM | ARGS_QUOTED, /* Ar */
-       ARGS_QUOTED, /* Cd */
+       ARGS_DELIM, /* Ar */
+       0, /* Cd */

        ARGS_DELIM, /* Cm */
        ARGS_DELIM, /* Dv */ 
        ARGS_DELIM, /* Er */ 
        ARGS_DELIM, /* Ev */ 
        0, /* Ex */
        ARGS_DELIM, /* Cm */
        ARGS_DELIM, /* Dv */ 
        ARGS_DELIM, /* Er */ 
        ARGS_DELIM, /* Ev */ 
        0, /* Ex */

-       ARGS_DELIM | ARGS_QUOTED, /* Fa */ 
+       ARGS_DELIM, /* Fa */ 

        0, /* Fd */ 
        ARGS_DELIM, /* Fl */
        0, /* Fd */ 
        ARGS_DELIM, /* Fl */

-       ARGS_DELIM | ARGS_QUOTED, /* Fn */ 
-       ARGS_DELIM | ARGS_QUOTED, /* Ft */ 
+       ARGS_DELIM, /* Fn */ 
+       ARGS_DELIM, /* Ft */ 

        ARGS_DELIM, /* Ic */ 
        0, /* In */ 
        ARGS_DELIM, /* Ic */ 
        0, /* In */ 

-       ARGS_DELIM | ARGS_QUOTED, /* Li */
-       ARGS_QUOTED, /* Nd */ 
+       ARGS_DELIM, /* Li */
+       0, /* Nd */ 

        ARGS_DELIM, /* Nm */ 
        ARGS_DELIM, /* Op */
        0, /* Ot */
        ARGS_DELIM, /* Pa */
        0, /* Rv */
        ARGS_DELIM, /* Nm */ 
        ARGS_DELIM, /* Op */
        0, /* Ot */
        ARGS_DELIM, /* Pa */
        0, /* Rv */

-       ARGS_DELIM | ARGS_ARGVLIKE, /* St */ 
+       ARGS_DELIM, /* St */ 

        ARGS_DELIM, /* Va */
        ARGS_DELIM, /* Vt */ 
        ARGS_DELIM, /* Xr */
        ARGS_DELIM, /* Va */
        ARGS_DELIM, /* Vt */ 
        ARGS_DELIM, /* Xr */

-       ARGS_QUOTED, /* %A */
-       ARGS_QUOTED, /* %B */
-       ARGS_QUOTED, /* %D */
-       ARGS_QUOTED, /* %I */
-       ARGS_QUOTED, /* %J */
-       ARGS_QUOTED, /* %N */
-       ARGS_QUOTED, /* %O */
-       ARGS_QUOTED, /* %P */
-       ARGS_QUOTED, /* %R */
-       ARGS_QUOTED, /* %T */
-       ARGS_QUOTED, /* %V */
+       0, /* %A */
+       0, /* %B */
+       0, /* %D */
+       0, /* %I */
+       0, /* %J */
+       0, /* %N */
+       0, /* %O */
+       0, /* %P */
+       0, /* %R */
+       0, /* %T */
+       0, /* %V */

        ARGS_DELIM, /* Ac */
        0, /* Ao */
        ARGS_DELIM, /* Aq */
        ARGS_DELIM, /* Ac */
        0, /* Ao */
        ARGS_DELIM, /* Aq */


@@ -181,12 +180,12 @@ static    int mdoc_argflags[MDOC_MAX] = {
        ARGS_DELIM, /* Sq */
        0, /* Sm */
        ARGS_DELIM, /* Sx */
        ARGS_DELIM, /* Sq */
        0, /* Sm */
        ARGS_DELIM, /* Sx */

-       ARGS_DELIM | ARGS_QUOTED, /* Sy */
+       ARGS_DELIM, /* Sy */

        ARGS_DELIM, /* Tn */
        ARGS_DELIM, /* Ux */
        ARGS_DELIM, /* Xc */
        0, /* Xo */
        ARGS_DELIM, /* Tn */
        ARGS_DELIM, /* Ux */
        ARGS_DELIM, /* Xc */
        0, /* Xo */

-       ARGS_QUOTED, /* Fo */ 
+       0, /* Fo */ 

        0, /* Fc */ 
        0, /* Oo */
        ARGS_DELIM, /* Oc */
        0, /* Fc */ 
        0, /* Oo */
        ARGS_DELIM, /* Oc */


@@ -198,16 +197,20 @@ static    int mdoc_argflags[MDOC_MAX] = {
        0, /* Ud */
        0, /* Lb */
        ARGS_DELIM, /* Lp */
        0, /* Ud */
        0, /* Lb */
        ARGS_DELIM, /* Lp */

-       ARGS_DELIM | ARGS_QUOTED, /* Lk */
-       ARGS_DELIM | ARGS_QUOTED, /* Mt */
+       ARGS_DELIM, /* Lk */
+       ARGS_DELIM, /* Mt */

        ARGS_DELIM, /* Brq */
        0, /* Bro */
        ARGS_DELIM, /* Brc */
        ARGS_DELIM, /* Brq */
        0, /* Bro */
        ARGS_DELIM, /* Brc */

-       ARGS_QUOTED, /* %C */
+       0, /* %C */

        0, /* Es */
        0, /* En */
        0, /* Dx */
        0, /* Es */
        0, /* En */
        0, /* Dx */

-       ARGS_QUOTED, /* %Q */
+       0, /* %Q */
+       0, /* br */
+       0, /* sp */
+       0, /* %U */
+       0, /* Ta */

 };
 
 
 };
 
 


@@ -216,26 +219,21 @@ static    int mdoc_argflags[MDOC_MAX] = {
  * [value0...], which may either have a single mandatory value, at least
  * one mandatory value, an optional single value, or no value.
  */
  * [value0...], which may either have a single mandatory value, at least
  * one mandatory value, an optional single value, or no value.
  */

-int
-mdoc_argv(struct mdoc *m, int line, int tok,
+enum margverr
+mdoc_argv(struct mdoc *m, int line, enum mdoct tok,

                struct mdoc_arg **v, int *pos, char *buf)
 {
                struct mdoc_arg **v, int *pos, char *buf)
 {

-       int               i;

        char             *p, sv;
        struct mdoc_argv tmp;
        struct mdoc_arg  *arg;
 
        char             *p, sv;
        struct mdoc_argv tmp;
        struct mdoc_arg  *arg;
 

-       if (0 == buf[*pos])
+       if ('\0' == buf[*pos])

                return(ARGV_EOLN);
 
        assert(' ' != buf[*pos]);
 
                return(ARGV_EOLN);
 
        assert(' ' != buf[*pos]);
 

-       if ('-' != buf[*pos] || ARGS_ARGVLIKE & mdoc_argflags[tok])
-               return(ARGV_WORD);
-

        /* Parse through to the first unescaped space. */
 
        /* Parse through to the first unescaped space. */
 

-       i = *pos;

        p = &buf[++(*pos)];
 
        assert(*pos > 0);
        p = &buf[++(*pos)];
 
        assert(*pos > 0);


@@ -250,10 +248,10 @@ mdoc_argv(struct mdoc *m, int line, int tok,
 
        /* XXX - save zeroed byte, if not an argument. */
 
 
        /* XXX - save zeroed byte, if not an argument. */
 

-       sv = 0;
+       sv = '\0';

        if (buf[*pos]) {
                sv = buf[*pos];
        if (buf[*pos]) {
                sv = buf[*pos];

-               buf[(*pos)++] = 0;
+               buf[(*pos)++] = '\0';

        }
 
        (void)memset(&tmp, 0, sizeof(struct mdoc_argv));
        }
 
        (void)memset(&tmp, 0, sizeof(struct mdoc_argv));


@@ -266,8 +264,6 @@ mdoc_argv(struct mdoc *m, int line, int tok,
                /* XXX - restore saved zeroed byte. */
                if (sv)
                        buf[*pos - 1] = sv;
                /* XXX - restore saved zeroed byte. */
                if (sv)
                        buf[*pos - 1] = sv;

-               if ( ! mdoc_pwarn(m, line, i, EARGVPARM))
-                       return(ARGV_ERROR);

                return(ARGV_WORD);
        }
 
                return(ARGV_WORD);
        }
 


@@ -277,23 +273,12 @@ mdoc_argv(struct mdoc *m, int line, int tok,
        if ( ! argv(m, line, &tmp, pos, buf))
                return(ARGV_ERROR);
 
        if ( ! argv(m, line, &tmp, pos, buf))
                return(ARGV_ERROR);
 

-       if (NULL == (arg = *v)) {
-               *v = calloc(1, sizeof(struct mdoc_arg));
-               if (NULL == *v) {
-                       (void)mdoc_nerr(m, m->last, EMALLOC);
-                       return(ARGV_ERROR);
-               }
-               arg = *v;
-       } 
+       if (NULL == (arg = *v))
+               arg = *v = mandoc_calloc(1, sizeof(struct mdoc_arg));

 
        arg->argc++;
 
        arg->argc++;

-       arg->argv = realloc(arg->argv, arg->argc * 
-                       sizeof(struct mdoc_argv));
-
-       if (NULL == arg->argv) {
-               (void)mdoc_nerr(m, m->last, EMALLOC);
-               return(ARGV_ERROR);
-       }
+       arg->argv = mandoc_realloc
+               (arg->argv, arg->argc * sizeof(struct mdoc_argv));

 
        (void)memcpy(&arg->argv[(int)arg->argc - 1], 
                        &tmp, sizeof(struct mdoc_argv));
 
        (void)memcpy(&arg->argv[(int)arg->argc - 1], 
                        &tmp, sizeof(struct mdoc_argv));


@@ -305,7 +290,7 @@ mdoc_argv(struct mdoc *m, int line, int tok,
 void
 mdoc_argv_free(struct mdoc_arg *p)
 {
 void
 mdoc_argv_free(struct mdoc_arg *p)
 {

-       int              i, j;
+       int              i;

 
        if (NULL == p)
                return;
 
        if (NULL == p)
                return;


@@ -317,275 +302,291 @@ mdoc_argv_free(struct mdoc_arg *p)
        }
        assert(p->argc);
 
        }
        assert(p->argc);
 

-       /* LINTED */
-       for (i = 0; i < (int)p->argc; i++) {
-               if (0 == p->argv[i].sz)
-                       continue;
-               /* LINTED */
-               for (j = 0; j < (int)p->argv[i].sz; j++) 
-                       free(p->argv[i].value[j]);
-
-               free(p->argv[i].value);
-       }
+       for (i = (int)p->argc - 1; i >= 0; i--)
+               mdoc_argn_free(p, i);

 
        free(p->argv);
        free(p);
 }
 
 
 
        free(p->argv);
        free(p);
 }
 
 

-int
-mdoc_args(struct mdoc *m, int line, 
-               int *pos, char *buf, int tok, char **v)
+void
+mdoc_argn_free(struct mdoc_arg *p, int iarg)

 {
 {

-       int               fl, c, i;
-       struct mdoc_node *n;
+       struct mdoc_argv *arg;
+       int               j;

 
 

-       fl = (0 == tok) ? 0 : mdoc_argflags[tok];
+       arg = &p->argv[iarg];

 
 

-       /* 
-        * Override per-macro argument flags with context-specific ones.
-        * As of now, this is only valid for `It' depending on its list
-        * context.
-        */
+       if (arg->sz && arg->value) {
+               for (j = (int)arg->sz - 1; j >= 0; j--) 
+                       free(arg->value[j]);
+               free(arg->value);
+       }

 
 

-       switch (tok) {
-       case (MDOC_It):
-               for (n = m->last; n; n = n->parent)
-                       if (MDOC_BLOCK == n->type && MDOC_Bl == n->tok)
-                               break;
+       for (--p->argc; iarg < (int)p->argc; iarg++)
+               p->argv[iarg] = p->argv[iarg+1];
+}

 
 

-               assert(n);
-               c = (int)(n->args ? n->args->argc : 0);
-               assert(c > 0);

 
 

-               /*
-                * Using `Bl -column' adds ARGS_TABSEP to the arguments
-                * and invalidates ARGS_DELIM.  Using `Bl -diag' allows
-                * for quoted arguments.
-                */
+enum margserr
+mdoc_zargs(struct mdoc *m, int line, int *pos, 
+               char *buf, int flags, char **v)
+{

 
 

-               /* LINTED */
-               for (i = 0; i < c; i++) {
-                       switch (n->args->argv[i].arg) {
-                       case (MDOC_Column):
-                               fl |= ARGS_TABSEP;
-                               fl &= ~ARGS_DELIM;
-                               i = c;
-                               break;
-                       case (MDOC_Diag):
-                               fl |= ARGS_QUOTED;
-                               i = c;
-                               break;
-                       default:
-                               break;
-                       }
-               }
-               break;
-       default:
-               break;
+       return(args(m, line, pos, buf, flags, v));
+}
+
+
+enum margserr
+mdoc_args(struct mdoc *m, int line, int *pos, 
+               char *buf, enum mdoct tok, char **v)
+{
+       int               fl;
+       struct mdoc_node *n;
+
+       fl = mdoc_argflags[tok];
+
+       if (MDOC_It != tok)
+               return(args(m, line, pos, buf, fl, v));
+
+       /*
+        * We know that we're in an `It', so it's reasonable to expect
+        * us to be sitting in a `Bl'.  Someday this may not be the case
+        * (if we allow random `It's sitting out there), so provide a
+        * safe fall-back into the default behaviour.
+        */
+
+       for (n = m->last; n; n = n->parent)
+               if (MDOC_Bl == n->tok)
+                       break;
+
+       assert(n->data.Bl);
+       if (n && LIST_column == n->data.Bl->type) {
+               fl |= ARGS_TABSEP;
+               fl &= ~ARGS_DELIM;

        }
 
        return(args(m, line, pos, buf, fl, v));
 }
 
 
        }
 
        return(args(m, line, pos, buf, fl, v));
 }
 
 

-static int
-args(struct mdoc *m, int line, 
-               int *pos, char *buf, int fl, char **v)
+static enum margserr
+args(struct mdoc *m, int line, int *pos, 
+               char *buf, int fl, char **v)

 {
 {

-       int               i;
-       char             *p, *pp;
+       int              i;
+       char            *p, *pp;
+       enum margserr    rc;
+       enum mdelim      d;

 
 

-       assert(*pos > 0);
+       /*
+        * Parse out the terms (like `val' in `.Xx -arg val' or simply
+        * `.Xx val'), which can have all sorts of properties:
+        *
+        *   ARGS_DELIM: use special handling if encountering trailing
+        *   delimiters in the form of [[::delim::][ ]+]+.
+        *
+        *   ARGS_NOWARN: don't post warnings.  This is only used when
+        *   re-parsing delimiters, as the warnings have already been
+        *   posted.
+        *
+        *   ARGS_TABSEP: use special handling for tab/`Ta' separated
+        *   phrases like in `Bl -column'.
+        */

 
 

-       if (0 == buf[*pos])
-               return(ARGS_EOLN);
+       assert(' ' != buf[*pos]);

 
 

-       if ('\"' == buf[*pos] && ! (fl & ARGS_QUOTED))
-               if ( ! mdoc_pwarn(m, line, *pos, EQUOTPARM))
-                       return(ARGS_ERROR);
+       if ('\0' == buf[*pos]) {
+               if (MDOC_PPHRASE & m->flags)
+                       return(ARGS_EOLN);
+               /*
+                * If we're not in a partial phrase and the flag for
+                * being a phrase literal is still set, the punctuation
+                * is unterminated.
+                */
+               if (MDOC_PHRASELIT & m->flags)
+                       if ( ! mdoc_pmsg(m, line, *pos, MANDOCERR_BADQUOTE))
+                               return(ARGS_ERROR);

 
 

-       if ( ! (fl & ARGS_ARGVLIKE) && '-' == buf[*pos]) 
-               if ( ! mdoc_pwarn(m, line, *pos, EARGVPARM))
-                       return(ARGS_ERROR);
+               m->flags &= ~MDOC_PHRASELIT;
+               return(ARGS_EOLN);
+       }

 
        /* 
 
        /* 

-        * If the first character is a delimiter and we're to look for
-        * delimited strings, then pass down the buffer seeing if it
-        * follows the pattern of [[::delim::][ ]+]+.
+        * If the first character is a closing delimiter and we're to
+        * look for delimited strings, then pass down the buffer seeing
+        * if it follows the pattern of [[::delim::][ ]+]+.  Note that
+        * we ONLY care about closing delimiters.

         */
 
         */
 

-       if ((fl & ARGS_DELIM) && mdoc_iscdelim(buf[*pos])) {
+       if ((fl & ARGS_DELIM) && DELIM_CLOSE == mdoc_iscdelim(buf[*pos])) {

                for (i = *pos; buf[i]; ) {
                for (i = *pos; buf[i]; ) {

-                       if ( ! mdoc_iscdelim(buf[i]))
+                       d = mdoc_iscdelim(buf[i]);
+                       if (DELIM_NONE == d || DELIM_OPEN == d)

                                break;
                        i++;
                                break;
                        i++;

-                       /* There must be at least one space... */
-                       if (0 == buf[i] || ' ' != buf[i])
+                       if ('\0' == buf[i] || ' ' != buf[i])

                                break;
                        i++;
                        while (buf[i] && ' ' == buf[i])
                                i++;
                }
                                break;
                        i++;
                        while (buf[i] && ' ' == buf[i])
                                i++;
                }

-               if (0 == buf[i]) {
+
+               if ('\0' == buf[i]) {

                        *v = &buf[*pos];
                        *v = &buf[*pos];

+                       if (i && ' ' != buf[i - 1])
+                               return(ARGS_PUNCT);
+                       if (ARGS_NOWARN & fl)
+                               return(ARGS_PUNCT);
+                       if ( ! mdoc_pmsg(m, line, *pos, MANDOCERR_EOLNSPACE))
+                               return(ARGS_ERROR);

                        return(ARGS_PUNCT);
                }
        }
 
                        return(ARGS_PUNCT);
                }
        }
 

-       /* First parse non-quoted strings. */
-
-       if ('\"' != buf[*pos] || ! (ARGS_QUOTED & fl)) {
-               *v = &buf[*pos];
-
-               /* 
-                * Thar be dragons here!  If we're tab-separated, search
-                * ahead for either a tab or the `Ta' macro.  
-                * If a `Ta' is detected, it must be space-buffered before and
-                * after.  If either of these hold true, then prune out the
-                * extra spaces and call it an argument.
-                */
-
-               if (ARGS_TABSEP & fl) {
-                       /* Scan ahead to unescaped tab. */
+       *v = &buf[*pos];

 
 

-                       p = strchr(*v, '\t');
+       /*
+        * First handle TABSEP items, restricted to `Bl -column'.  This
+        * ignores conventional token parsing and instead uses tabs or
+        * `Ta' macros to separate phrases.  Phrases are parsed again
+        * for arguments at a later phase.
+        */

 
 

-                       /* Scan ahead to unescaped `Ta'. */
+       if (ARGS_TABSEP & fl) {
+               /* Scan ahead to tab (can't be escaped). */
+               p = strchr(*v, '\t');
+               pp = NULL;

 
 

+               /* Scan ahead to unescaped `Ta'. */
+               if ( ! (MDOC_PHRASELIT & m->flags)) 

                        for (pp = *v; ; pp++) {
                                if (NULL == (pp = strstr(pp, "Ta")))
                                        break;
                                if (pp > *v && ' ' != *(pp - 1))
                                        continue;
                        for (pp = *v; ; pp++) {
                                if (NULL == (pp = strstr(pp, "Ta")))
                                        break;
                                if (pp > *v && ' ' != *(pp - 1))
                                        continue;

-                               if (' ' == *(pp + 2) || 0 == *(pp + 2))
+                               if (' ' == *(pp + 2) || '\0' == *(pp + 2))

                                        break;
                        }
 
                                        break;
                        }
 

-                       /* Choose delimiter tab/Ta. */
+               /* By default, assume a phrase. */
+               rc = ARGS_PHRASE;

 
 

-                       if (p && pp)
-                               p = (p < pp ? p : pp);
-                       else if ( ! p && pp)
-                               p = pp;
+               /* 
+                * Adjust new-buffer position to be beyond delimiter
+                * mark (e.g., Ta -> end + 2).
+                */
+               if (p && pp) {
+                       *pos += pp < p ? 2 : 1;
+                       rc = pp < p ? ARGS_PHRASE : ARGS_PPHRASE;
+                       p = pp < p ? pp : p;
+               } else if (p && ! pp) {
+                       rc = ARGS_PPHRASE;
+                       *pos += 1;
+               } else if (pp && ! p) {
+                       p = pp;
+                       *pos += 2;
+               } else {
+                       rc = ARGS_PEND;
+                       p = strchr(*v, 0);
+               }

 
 

-                       /* Strip delimiter's preceding whitespace. */
+               /* Whitespace check for eoln case... */
+               if ('\0' == *p && ' ' == *(p - 1) && ! (ARGS_NOWARN & fl))
+                       if ( ! mdoc_pmsg(m, line, *pos, MANDOCERR_EOLNSPACE))
+                               return(ARGS_ERROR);

 
 

-                       if (p && p > *v) {
-                               pp = p - 1;
-                               while (pp > *v && ' ' == *pp)
-                                       pp--;
-                               if (pp == *v && ' ' == *pp) 
-                                       *pp = 0;
-                               else if (' ' == *pp)
-                                       *(pp + 1) = 0;
-                       }
+               *pos += (int)(p - *v);

 
 

-                       /* ...in- and proceding whitespace. */
+               /* Strip delimiter's preceding whitespace. */
+               pp = p - 1;
+               while (pp > *v && ' ' == *pp) {
+                       if (pp > *v && '\\' == *(pp - 1))
+                               break;
+                       pp--;
+               }
+               *(pp + 1) = 0;

 
 

-                       if (p && ('\t' != *p)) {
-                               *p++ = 0;
-                               *p++ = 0;
-                       } else if (p)
-                               *p++ = 0;
+               /* Strip delimiter's proceeding whitespace. */
+               for (pp = &buf[*pos]; ' ' == *pp; pp++, (*pos)++)
+                       /* Skip ahead. */ ;

 
 

-                       if (p) {
-                               while (' ' == *p)
-                                       p++;
-                               if (0 != *p)
-                                       *(p - 1) = 0;
-                               *pos += (int)(p - *v);
-                       } 
+               return(rc);
+       } 

 
 

-                       if (p && 0 == *p)
-                               if ( ! mdoc_pwarn(m, line, *pos, ECOLEMPTY))
-                                       return(0);
-                       if (p && 0 == *p && p > *v && ' ' == *(p - 1))
-                               if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
-                                       return(0);
+       /* 
+        * Process a quoted literal.  A quote begins with a double-quote
+        * and ends with a double-quote NOT preceded by a double-quote.
+        * Whitespace is NOT involved in literal termination.
+        */

 
 

-                       if (p)
-                               return(ARGS_PHRASE);
+       if (MDOC_PHRASELIT & m->flags || '\"' == buf[*pos]) {
+               if ( ! (MDOC_PHRASELIT & m->flags))
+                       *v = &buf[++(*pos)];

 
 

-                       /* Configure the eoln case, too. */
+               if (MDOC_PPHRASE & m->flags)
+                       m->flags |= MDOC_PHRASELIT;

 
 

-                       p = strchr(*v, 0);
-                       assert(p);
-
-                       if (p > *v && ' ' == *(p - 1))
-                               if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
-                                       return(0);
-                       *pos += (int)(p - *v);
-
-                       return(ARGS_PHRASE);
-               } 
-               
-               /* Do non-tabsep look-ahead here. */
-               
-               if ( ! (ARGS_TABSEP & fl))
-                       while (buf[*pos]) {
-                               if (' ' == buf[*pos])
-                                       if ('\\' != buf[*pos - 1])
-                                               break;
-                               (*pos)++;
-                       }
-
-               if (0 == buf[*pos])
-                       return(ARGS_WORD);
+               for ( ; buf[*pos]; (*pos)++) {
+                       if ('\"' != buf[*pos])
+                               continue;
+                       if ('\"' != buf[*pos + 1])
+                               break;
+                       (*pos)++;
+               }

 
 

-               buf[(*pos)++] = 0;
+               if ('\0' == buf[*pos]) {
+                       if (ARGS_NOWARN & fl || MDOC_PPHRASE & m->flags)
+                               return(ARGS_QWORD);
+                       if ( ! mdoc_pmsg(m, line, *pos, MANDOCERR_BADQUOTE))
+                               return(ARGS_ERROR);
+                       return(ARGS_QWORD);
+               }

 
 

-               if (0 == buf[*pos])
-                       return(ARGS_WORD);
+               m->flags &= ~MDOC_PHRASELIT;
+               buf[(*pos)++] = '\0';

 
 

-               if ( ! (ARGS_TABSEP & fl))
-                       while (buf[*pos] && ' ' == buf[*pos])
-                               (*pos)++;
+               if ('\0' == buf[*pos])
+                       return(ARGS_QWORD);

 
 

-               if (buf[*pos])
-                       return(ARGS_WORD);
+               while (' ' == buf[*pos])
+                       (*pos)++;

 
 

-               if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
-                       return(ARGS_ERROR);
+               if (0 == buf[*pos] && ! (ARGS_NOWARN & fl))
+                       if ( ! mdoc_pmsg(m, line, *pos, MANDOCERR_EOLNSPACE))
+                               return(ARGS_ERROR);

 
 

-               return(ARGS_WORD);
+               return(ARGS_QWORD);

        }
 
        }
 

-       /*
-        * If we're a quoted string (and quoted strings are allowed),
-        * then parse ahead to the next quote.  If none's found, it's an
-        * error.  After, parse to the next word.  
+       /* 
+        * A non-quoted term progresses until either the end of line or
+        * a non-escaped whitespace.

         */
 
         */
 

-       *v = &buf[++(*pos)];
-
-       while (buf[*pos] && '\"' != buf[*pos])
-               (*pos)++;
+       for ( ; buf[*pos]; (*pos)++)
+               if (*pos && ' ' == buf[*pos] && '\\' != buf[*pos - 1])
+                       break;

 
 

-       if (0 == buf[*pos]) {
-               (void)mdoc_perr(m, line, *pos, EQUOTTERM);
-               return(ARGS_ERROR);
-       }
+       if ('\0' == buf[*pos])
+               return(ARGS_WORD);

 
 

-       buf[(*pos)++] = 0;
-       if (0 == buf[*pos])
-               return(ARGS_QWORD);
+       buf[(*pos)++] = '\0';

 
 

-       while (buf[*pos] && ' ' == buf[*pos])
+       while (' ' == buf[*pos])

                (*pos)++;
 
                (*pos)++;
 

-       if (buf[*pos])
-               return(ARGS_QWORD);
-
-       if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
-               return(ARGS_ERROR);
+       if ('\0' == buf[*pos] && ! (ARGS_NOWARN & fl))
+               if ( ! mdoc_pmsg(m, line, *pos, MANDOCERR_EOLNSPACE))
+                       return(ARGS_ERROR);

 
 

-       return(ARGS_QWORD);
+       return(ARGS_WORD);

 }
 
 
 }
 
 

-static int
-argv_a2arg(int tok, const char *argv)
+static enum mdocargt
+argv_a2arg(enum mdoct tok, const char *p)

 {
 
        /*
 {
 
        /*


@@ -598,80 +599,82 @@ argv_a2arg(int tok, const char *argv)
 
        switch (tok) {
        case (MDOC_An):
 
        switch (tok) {
        case (MDOC_An):

-               if (0 == strcmp(argv, "split"))
+               if (0 == strcmp(p, "split"))

                        return(MDOC_Split);
                        return(MDOC_Split);

-               else if (0 == strcmp(argv, "nosplit"))
+               else if (0 == strcmp(p, "nosplit"))

                        return(MDOC_Nosplit);
                break;
 
        case (MDOC_Bd):
                        return(MDOC_Nosplit);
                break;
 
        case (MDOC_Bd):

-               if (0 == strcmp(argv, "ragged"))
+               if (0 == strcmp(p, "ragged"))

                        return(MDOC_Ragged);
                        return(MDOC_Ragged);

-               else if (0 == strcmp(argv, "unfilled"))
+               else if (0 == strcmp(p, "unfilled"))

                        return(MDOC_Unfilled);
                        return(MDOC_Unfilled);

-               else if (0 == strcmp(argv, "filled"))
+               else if (0 == strcmp(p, "filled"))

                        return(MDOC_Filled);
                        return(MDOC_Filled);

-               else if (0 == strcmp(argv, "literal"))
+               else if (0 == strcmp(p, "literal"))

                        return(MDOC_Literal);
                        return(MDOC_Literal);

-               else if (0 == strcmp(argv, "file"))
+               else if (0 == strcmp(p, "file"))

                        return(MDOC_File);
                        return(MDOC_File);

-               else if (0 == strcmp(argv, "offset"))
+               else if (0 == strcmp(p, "offset"))

                        return(MDOC_Offset);
                        return(MDOC_Offset);

-               else if (0 == strcmp(argv, "compact"))
+               else if (0 == strcmp(p, "compact"))

                        return(MDOC_Compact);
                        return(MDOC_Compact);

+               else if (0 == strcmp(p, "centered"))
+                       return(MDOC_Centred);

                break;
 
        case (MDOC_Bf):
                break;
 
        case (MDOC_Bf):

-               if (0 == strcmp(argv, "emphasis"))
+               if (0 == strcmp(p, "emphasis"))

                        return(MDOC_Emphasis);
                        return(MDOC_Emphasis);

-               else if (0 == strcmp(argv, "literal"))
+               else if (0 == strcmp(p, "literal"))

                        return(MDOC_Literal);
                        return(MDOC_Literal);

-               else if (0 == strcmp(argv, "symbolic"))
+               else if (0 == strcmp(p, "symbolic"))

                        return(MDOC_Symbolic);
                break;
 
        case (MDOC_Bk):
                        return(MDOC_Symbolic);
                break;
 
        case (MDOC_Bk):

-               if (0 == strcmp(argv, "words"))
+               if (0 == strcmp(p, "words"))

                        return(MDOC_Words);
                break;
 
        case (MDOC_Bl):
                        return(MDOC_Words);
                break;
 
        case (MDOC_Bl):

-               if (0 == strcmp(argv, "bullet"))
+               if (0 == strcmp(p, "bullet"))

                        return(MDOC_Bullet);
                        return(MDOC_Bullet);

-               else if (0 == strcmp(argv, "dash"))
+               else if (0 == strcmp(p, "dash"))

                        return(MDOC_Dash);
                        return(MDOC_Dash);

-               else if (0 == strcmp(argv, "hyphen"))
+               else if (0 == strcmp(p, "hyphen"))

                        return(MDOC_Hyphen);
                        return(MDOC_Hyphen);

-               else if (0 == strcmp(argv, "item"))
+               else if (0 == strcmp(p, "item"))

                        return(MDOC_Item);
                        return(MDOC_Item);

-               else if (0 == strcmp(argv, "enum"))
+               else if (0 == strcmp(p, "enum"))

                        return(MDOC_Enum);
                        return(MDOC_Enum);

-               else if (0 == strcmp(argv, "tag"))
+               else if (0 == strcmp(p, "tag"))

                        return(MDOC_Tag);
                        return(MDOC_Tag);

-               else if (0 == strcmp(argv, "diag"))
+               else if (0 == strcmp(p, "diag"))

                        return(MDOC_Diag);
                        return(MDOC_Diag);

-               else if (0 == strcmp(argv, "hang"))
+               else if (0 == strcmp(p, "hang"))

                        return(MDOC_Hang);
                        return(MDOC_Hang);

-               else if (0 == strcmp(argv, "ohang"))
+               else if (0 == strcmp(p, "ohang"))

                        return(MDOC_Ohang);
                        return(MDOC_Ohang);

-               else if (0 == strcmp(argv, "inset"))
+               else if (0 == strcmp(p, "inset"))

                        return(MDOC_Inset);
                        return(MDOC_Inset);

-               else if (0 == strcmp(argv, "column"))
+               else if (0 == strcmp(p, "column"))

                        return(MDOC_Column);
                        return(MDOC_Column);

-               else if (0 == strcmp(argv, "width"))
+               else if (0 == strcmp(p, "width"))

                        return(MDOC_Width);
                        return(MDOC_Width);

-               else if (0 == strcmp(argv, "offset"))
+               else if (0 == strcmp(p, "offset"))

                        return(MDOC_Offset);
                        return(MDOC_Offset);

-               else if (0 == strcmp(argv, "compact"))
+               else if (0 == strcmp(p, "compact"))

                        return(MDOC_Compact);
                        return(MDOC_Compact);

-               else if (0 == strcmp(argv, "nested"))
+               else if (0 == strcmp(p, "nested"))

                        return(MDOC_Nested);
                break;
        
        case (MDOC_Rv):
                /* FALLTHROUGH */
        case (MDOC_Ex):
                        return(MDOC_Nested);
                break;
        
        case (MDOC_Rv):
                /* FALLTHROUGH */
        case (MDOC_Ex):

-               if (0 == strcmp(argv, "std"))
+               if (0 == strcmp(p, "std"))

                        return(MDOC_Std);
                break;
        default:
                        return(MDOC_Std);
                break;
        default:


@@ -686,28 +689,23 @@ static int
 argv_multi(struct mdoc *m, int line, 
                struct mdoc_argv *v, int *pos, char *buf)
 {
 argv_multi(struct mdoc *m, int line, 
                struct mdoc_argv *v, int *pos, char *buf)
 {

-       int              c;
+       enum margserr    ac;

        char            *p;
 
        for (v->sz = 0; ; v->sz++) {
                if ('-' == buf[*pos])
                        break;
        char            *p;
 
        for (v->sz = 0; ; v->sz++) {
                if ('-' == buf[*pos])
                        break;

-               c = args(m, line, pos, buf, ARGS_QUOTED, &p);
-               if (ARGS_ERROR == c)
+               ac = args(m, line, pos, buf, 0, &p);
+               if (ARGS_ERROR == ac)

                        return(0);
                        return(0);

-               else if (ARGS_EOLN == c)
+               else if (ARGS_EOLN == ac)

                        break;
 
                        break;
 

-               if (0 == v->sz % MULTI_STEP) {
-                       v->value = realloc(v->value, 
+               if (0 == v->sz % MULTI_STEP)
+                       v->value = mandoc_realloc(v->value, 

                                (v->sz + MULTI_STEP) * sizeof(char *));
                                (v->sz + MULTI_STEP) * sizeof(char *));

-                       if (NULL == v->value) {
-                               (void)mdoc_nerr(m, m->last, EMALLOC);
-                               return(ARGV_ERROR);
-                       }
-               }
-               if (NULL == (v->value[(int)v->sz] = strdup(p)))
-                       return(mdoc_nerr(m, m->last, EMALLOC));
+
+               v->value[(int)v->sz] = mandoc_strdup(p);

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


@@ -718,23 +716,21 @@ static int
 argv_opt_single(struct mdoc *m, int line, 
                struct mdoc_argv *v, int *pos, char *buf)
 {
 argv_opt_single(struct mdoc *m, int line, 
                struct mdoc_argv *v, int *pos, char *buf)
 {

-       int              c;
+       enum margserr    ac;

        char            *p;
 
        if ('-' == buf[*pos])
                return(1);
 
        char            *p;
 
        if ('-' == buf[*pos])
                return(1);
 

-       c = args(m, line, pos, buf, ARGS_QUOTED, &p);
-       if (ARGS_ERROR == c)
+       ac = args(m, line, pos, buf, 0, &p);
+       if (ARGS_ERROR == ac)

                return(0);
                return(0);

-       if (ARGS_EOLN == c)
+       if (ARGS_EOLN == ac)

                return(1);
 
        v->sz = 1;
                return(1);
 
        v->sz = 1;

-       if (NULL == (v->value = calloc(1, sizeof(char *))))
-               return(mdoc_nerr(m, m->last, EMALLOC));
-       if (NULL == (v->value[0] = strdup(p)))
-               return(mdoc_nerr(m, m->last, EMALLOC));
+       v->value = mandoc_malloc(sizeof(char *));
+       v->value[0] = mandoc_strdup(p);

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


@@ -747,22 +743,22 @@ static int
 argv_single(struct mdoc *m, int line, 
                struct mdoc_argv *v, int *pos, char *buf)
 {
 argv_single(struct mdoc *m, int line, 
                struct mdoc_argv *v, int *pos, char *buf)
 {

-       int              c, ppos;
+       int              ppos;
+       enum margserr    ac;

        char            *p;
 
        ppos = *pos;
 
        char            *p;
 
        ppos = *pos;
 

-       c = args(m, line, pos, buf, ARGS_QUOTED, &p);
-       if (ARGS_ERROR == c)
+       ac = args(m, line, pos, buf, 0, &p);
+       if (ARGS_EOLN == ac) {
+               mdoc_pmsg(m, line, ppos, MANDOCERR_SYNTARGVCOUNT);
+               return(0);
+       } else if (ARGS_ERROR == ac)

                return(0);
                return(0);

-       if (ARGS_EOLN == c)
-               return(mdoc_perr(m, line, ppos, EARGVAL));

 
        v->sz = 1;
 
        v->sz = 1;

-       if (NULL == (v->value = calloc(1, sizeof(char *))))
-               return(mdoc_nerr(m, m->last, EMALLOC));
-       if (NULL == (v->value[0] = strdup(p)))
-               return(mdoc_nerr(m, m->last, EMALLOC));
+       v->value = mandoc_malloc(sizeof(char *));
+       v->value[0] = mandoc_strdup(p);

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