=================================================================== RCS file: /cvs/mandoc/mdoc_macro.c,v retrieving revision 1.54 retrieving revision 1.75 diff -u -p -r1.54 -r1.75 --- mandoc/mdoc_macro.c 2010/05/07 05:39:35 1.54 +++ mandoc/mdoc_macro.c 2010/05/31 10:28:04 1.75 @@ -1,4 +1,4 @@ -/* $Id: mdoc_macro.c,v 1.54 2010/05/07 05:39:35 kristaps Exp $ */ +/* $Id: mdoc_macro.c,v 1.75 2010/05/31 10:28:04 kristaps Exp $ */ /* * Copyright (c) 2008, 2009 Kristaps Dzonsons * @@ -25,7 +25,9 @@ #include #include +#include "mandoc.h" #include "libmdoc.h" +#include "libmandoc.h" enum rew { REWIND_REWIND, @@ -42,10 +44,11 @@ static int in_line_eoln(MACRO_PROT_ARGS); static int in_line_argn(MACRO_PROT_ARGS); static int in_line(MACRO_PROT_ARGS); static int obsolete(MACRO_PROT_ARGS); +static int phrase_ta(MACRO_PROT_ARGS); static int append_delims(struct mdoc *, int, int *, char *); -static enum mdoct lookup(int, const char *); +static enum mdoct lookup(enum mdoct, const char *); static enum mdoct lookup_raw(const char *); static int phrase(struct mdoc *, int, int, char *); static enum mdoct rew_alt(enum mdoct); @@ -168,7 +171,7 @@ const struct mdoc_macro __mdoc_macros[MDOC_MAX] = { { in_line_eoln, 0 }, /* Hf */ { obsolete, 0 }, /* Fr */ { in_line_eoln, 0 }, /* Ud */ - { in_line_eoln, 0 }, /* Lb */ + { in_line, 0 }, /* Lb */ { in_line_eoln, 0 }, /* Lp */ { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Lk */ { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Mt */ @@ -183,6 +186,7 @@ const struct mdoc_macro __mdoc_macros[MDOC_MAX] = { { in_line_eoln, 0 }, /* br */ { in_line_eoln, 0 }, /* sp */ { in_line_eoln, 0 }, /* %U */ + { phrase_ta, MDOC_CALLABLE | MDOC_PARSED }, /* Ta */ }; const struct mdoc_macro * const mdoc_macros = __mdoc_macros; @@ -193,6 +197,7 @@ swarn(struct mdoc *mdoc, enum mdoc_type type, int line, int pos, const struct mdoc_node *p) { const char *n, *t, *tt; + enum mandocerr ec; n = t = ""; tt = "block"; @@ -225,13 +230,12 @@ swarn(struct mdoc *mdoc, enum mdoc_type type, break; } - if ( ! (MDOC_IGN_SCOPE & mdoc->pflags)) - return(mdoc_verr(mdoc, line, pos, - "%s scope breaks %s scope of %s", + ec = (MDOC_IGN_SCOPE & mdoc->pflags) ? + MANDOCERR_SCOPE : MANDOCERR_SYNTSCOPE; + + return(mdoc_vmsg(mdoc, ec, line, pos, + "%s scope breaks %s of %s", tt, t, n)); - return(mdoc_vwarn(mdoc, line, pos, - "%s scope breaks %s scope of %s", - tt, t, n)); } @@ -254,7 +258,8 @@ mdoc_macroend(struct mdoc *m) continue; if ( ! (MDOC_EXPLICIT & mdoc_macros[n->tok].flags)) continue; - return(mdoc_nerr(m, n, EOPEN)); + mdoc_nmsg(m, n, MANDOCERR_SYNTSCOPE); + return(0); } /* Rewind to the first. */ @@ -267,7 +272,7 @@ mdoc_macroend(struct mdoc *m) * Look up a macro from within a subsequent context. */ static enum mdoct -lookup(int from, const char *p) +lookup(enum mdoct from, const char *p) { /* FIXME: make -diag lists be un-PARSED. */ @@ -283,7 +288,7 @@ lookup(int from, const char *p) static enum mdoct lookup_raw(const char *p) { - int res; + enum mdoct res; if (MDOC_MAX == (res = mdoc_hash_find(p))) return(MDOC_MAX); @@ -586,7 +591,9 @@ rew_sub(enum mdoc_type t, struct mdoc *m, return(1); if ( ! (MDOC_EXPLICIT & mdoc_macros[tok].flags)) return(1); - return(mdoc_perr(m, line, ppos, ENOCTX)); + /* FIXME: shouldn't raise an error */ + mdoc_pmsg(m, line, ppos, MANDOCERR_SYNTNOSCOPE); + return(0); } if (REWIND_REWIND == c) break; @@ -620,27 +627,41 @@ rew_sub(enum mdoc_type t, struct mdoc *m, static int -append_delims(struct mdoc *mdoc, int line, int *pos, char *buf) +append_delims(struct mdoc *m, int line, int *pos, char *buf) { - int lastarg; - enum margerr ac; + int la; + enum margserr ac; char *p; - if (0 == buf[*pos]) + if ('\0' == buf[*pos]) return(1); for (;;) { - lastarg = *pos; - ac = mdoc_zargs(mdoc, line, pos, buf, ARGS_NOWARN, &p); - assert(ARGS_PHRASE != ac); + la = *pos; + ac = mdoc_zargs(m, line, pos, buf, ARGS_NOWARN, &p); if (ARGS_ERROR == ac) return(0); else if (ARGS_EOLN == ac) break; - assert(mdoc_isdelim(p)); - if ( ! mdoc_word_alloc(mdoc, line, lastarg, p)) + + assert(DELIM_NONE != mdoc_isdelim(p)); + if ( ! mdoc_word_alloc(m, line, la, p)) return(0); + + /* + * If we encounter end-of-sentence symbols, then trigger + * the double-space. + * + * XXX: it's easy to allow this to propogate outward to + * the last symbol, such that `. )' will cause the + * correct double-spacing. However, (1) groff isn't + * smart enough to do this and (2) it would require + * knowing which symbols break this behaviour, for + * example, `. ;' shouldn't propogate the double-space. + */ + if (mandoc_eos(p, strlen(p))) + m->last->flags |= MDOC_EOS; } return(1); @@ -653,11 +674,13 @@ append_delims(struct mdoc *mdoc, int line, int *pos, c static int blk_exp_close(MACRO_PROT_ARGS) { - int j, lastarg, maxargs, flushed; - enum margerr ac; + int j, lastarg, maxargs, flushed, nl; + enum margserr ac; enum mdoct ntok; char *p; + nl = MDOC_NEWLINE & m->flags; + switch (tok) { case (MDOC_Ec): maxargs = 1; @@ -668,8 +691,9 @@ blk_exp_close(MACRO_PROT_ARGS) } if ( ! (MDOC_CALLABLE & mdoc_macros[tok].flags)) { + /* FIXME: do this in validate */ if (buf[*pos]) - if ( ! mdoc_pwarn(m, line, ppos, ENOLINE)) + if ( ! mdoc_pmsg(m, line, ppos, MANDOCERR_ARGSLOST)) return(0); if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos)) @@ -723,7 +747,7 @@ blk_exp_close(MACRO_PROT_ARGS) if ( ! flushed && ! rew_sub(MDOC_BLOCK, m, tok, line, ppos)) return(0); - if (ppos > 1) + if ( ! nl) return(1); return(append_delims(m, line, pos, buf)); } @@ -732,12 +756,16 @@ blk_exp_close(MACRO_PROT_ARGS) static int in_line(MACRO_PROT_ARGS) { - int la, lastpunct, c, cnt, d, nc; + int la, scope, cnt, nc, nl; + enum margverr av; enum mdoct ntok; - enum margerr ac; + enum margserr ac; + enum mdelim d; struct mdoc_arg *arg; char *p; + nl = MDOC_NEWLINE & m->flags; + /* * Whether we allow ignored elements (those without content, * usually because of reserved words) to squeak by. @@ -764,22 +792,22 @@ in_line(MACRO_PROT_ARGS) for (arg = NULL;; ) { la = *pos; - c = mdoc_argv(m, line, tok, &arg, pos, buf); + av = mdoc_argv(m, line, tok, &arg, pos, buf); - if (ARGV_WORD == c) { + if (ARGV_WORD == av) { *pos = la; break; } - if (ARGV_EOLN == c) + if (ARGV_EOLN == av) break; - if (ARGV_ARG == c) + if (ARGV_ARG == av) continue; mdoc_argv_free(arg); return(0); } - for (cnt = 0, lastpunct = 1;; ) { + for (cnt = scope = 0;; ) { la = *pos; ac = mdoc_args(m, line, pos, buf, tok, &p); @@ -800,7 +828,7 @@ in_line(MACRO_PROT_ARGS) */ if (MDOC_MAX != ntok) { - if (0 == lastpunct && ! rew_elem(m, tok)) + if (scope && ! rew_elem(m, tok)) return(0); if (nc && 0 == cnt) { if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg)) @@ -809,12 +837,12 @@ in_line(MACRO_PROT_ARGS) return(0); } else if ( ! nc && 0 == cnt) { mdoc_argv_free(arg); - if ( ! mdoc_pwarn(m, line, ppos, EIGNE)) + if ( ! mdoc_pmsg(m, line, ppos, MANDOCERR_MACROEMPTY)) return(0); } if ( ! mdoc_macro(m, ntok, line, la, pos, buf)) return(0); - if (ppos > 1) + if ( ! nl) return(1); return(append_delims(m, line, pos, buf)); } @@ -825,19 +853,40 @@ in_line(MACRO_PROT_ARGS) * the word. */ - d = ARGS_QWORD == ac ? 0 : mdoc_isdelim(p); + d = ARGS_QWORD == ac ? DELIM_NONE : mdoc_isdelim(p); - if (ARGS_QWORD != ac && d) { - if (0 == lastpunct && ! rew_elem(m, tok)) + if (DELIM_NONE != d) { + /* + * If we encounter closing punctuation, no word + * has been omitted, no scope is open, and we're + * allowed to have an empty element, then start + * a new scope. `Ar', `Fl', and `Li', only do + * this once per invocation. There may be more + * of these (all of them?). + */ + if (0 == cnt && (nc || MDOC_Li == tok) && + DELIM_CLOSE == d && ! scope) { + if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg)) + return(0); + if (MDOC_Ar == tok || MDOC_Li == tok || + MDOC_Fl == tok) + cnt++; + scope = 1; + } + /* + * Close out our scope, if one is open, before + * any punctuation. + */ + if (scope && ! rew_elem(m, tok)) return(0); - lastpunct = 1; - } else if (lastpunct) { + scope = 0; + } else if ( ! scope) { if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg)) return(0); - lastpunct = 0; + scope = 1; } - if ( ! d) + if (DELIM_NONE == d) cnt++; if ( ! mdoc_word_alloc(m, line, la, p)) return(0); @@ -847,14 +896,14 @@ in_line(MACRO_PROT_ARGS) * word so that the `-' can be added to each one without * having to parse out spaces. */ - if (0 == lastpunct && MDOC_Fl == tok) { + if (scope && MDOC_Fl == tok) { if ( ! rew_elem(m, tok)) return(0); - lastpunct = 1; + scope = 0; } } - if (0 == lastpunct && ! rew_elem(m, tok)) + if (scope && ! rew_elem(m, tok)) return(0); /* @@ -870,11 +919,11 @@ in_line(MACRO_PROT_ARGS) return(0); } else if ( ! nc && 0 == cnt) { mdoc_argv_free(arg); - if ( ! mdoc_pwarn(m, line, ppos, EIGNE)) + if ( ! mdoc_pmsg(m, line, ppos, MANDOCERR_MACROEMPTY)) return(0); } - if (ppos > 1) + if ( ! nl) return(1); return(append_delims(m, line, pos, buf)); } @@ -883,17 +932,21 @@ in_line(MACRO_PROT_ARGS) static int blk_full(MACRO_PROT_ARGS) { - int c, la; + int la, nl; struct mdoc_arg *arg; struct mdoc_node *head; /* save of head macro */ struct mdoc_node *body; /* save of body macro */ #ifdef UGLY struct mdoc_node *n; #endif + enum mdoc_type mtt; enum mdoct ntok; - enum margerr ac; + enum margserr ac, lac; + enum margverr av; char *p; + nl = MDOC_NEWLINE & m->flags; + /* Close out prior implicit scope. */ if ( ! (MDOC_EXPLICIT & mdoc_macros[tok].flags)) { @@ -914,16 +967,16 @@ blk_full(MACRO_PROT_ARGS) for (arg = NULL;; ) { la = *pos; - c = mdoc_argv(m, line, tok, &arg, pos, buf); + av = mdoc_argv(m, line, tok, &arg, pos, buf); - if (ARGV_WORD == c) { + if (ARGV_WORD == av) { *pos = la; break; } - if (ARGV_EOLN == c) + if (ARGV_EOLN == av) break; - if (ARGV_ARG == c) + if (ARGV_ARG == av) continue; mdoc_argv_free(arg); @@ -951,38 +1004,92 @@ blk_full(MACRO_PROT_ARGS) body = m->last; } - for (;;) { + ac = ARGS_ERROR; + + for ( ; ; ) { la = *pos; + /* Initialise last-phrase-type with ARGS_PEND. */ + lac = ARGS_ERROR == ac ? ARGS_PEND : ac; ac = mdoc_args(m, line, pos, buf, tok, &p); if (ARGS_ERROR == ac) return(0); - if (ARGS_EOLN == ac) + + if (ARGS_EOLN == ac) { + if (ARGS_PPHRASE != lac && ARGS_PHRASE != lac) + break; + /* + * This is necessary: if the last token on a + * line is a `Ta' or tab, then we'll get + * ARGS_EOLN, so we must be smart enough to + * reopen our scope if the last parse was a + * phrase or partial phrase. + */ + if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos)) + return(0); + if ( ! mdoc_body_alloc(m, line, ppos, tok)) + return(0); + body = m->last; break; + } - /* Don't emit leading punct. for phrases. */ + /* + * Emit leading punctuation (i.e., punctuation before + * the MDOC_HEAD) for non-phrase types. + */ - if (NULL == head && ARGS_PHRASE != ac && + if (NULL == head && + ARGS_PEND != ac && + ARGS_PHRASE != ac && + ARGS_PPHRASE != ac && ARGS_QWORD != ac && - 1 == mdoc_isdelim(p)) { + DELIM_OPEN == mdoc_isdelim(p)) { if ( ! mdoc_word_alloc(m, line, la, p)) return(0); continue; } - /* Always re-open head for phrases. */ + /* Open a head if one hasn't been opened. */ - if (NULL == head || ARGS_PHRASE == ac) { + if (NULL == head) { if ( ! mdoc_head_alloc(m, line, ppos, tok)) return(0); head = m->last; } - if (ARGS_PHRASE == ac) { - if ( ! phrase(m, line, la, buf)) + if (ARGS_PHRASE == ac || + ARGS_PEND == ac || + ARGS_PPHRASE == ac) { + /* + * If we haven't opened a body yet, rewind the + * head; if we have, rewind that instead. + */ + + mtt = body ? MDOC_BODY : MDOC_HEAD; + if ( ! rew_sub(mtt, m, tok, line, ppos)) return(0); - if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos)) + + /* Then allocate our body context. */ + + if ( ! mdoc_body_alloc(m, line, ppos, tok)) return(0); + body = m->last; + + /* + * Process phrases: set whether we're in a + * partial-phrase (this effects line handling) + * then call down into the phrase parser. + */ + + if (ARGS_PPHRASE == ac) + m->flags |= MDOC_PPHRASE; + if (ARGS_PEND == ac && ARGS_PPHRASE == lac) + m->flags |= MDOC_PPHRASE; + + if ( ! phrase(m, line, la, buf)) + return(0); + + m->flags &= ~MDOC_PPHRASE; continue; } @@ -1005,7 +1112,7 @@ blk_full(MACRO_PROT_ARGS) head = m->last; } - if (1 == ppos && ! append_delims(m, line, pos, buf)) + if (nl && ! append_delims(m, line, pos, buf)) return(0); /* If we've already opened our body, exit now. */ @@ -1045,14 +1152,16 @@ blk_full(MACRO_PROT_ARGS) static int blk_part_imp(MACRO_PROT_ARGS) { - int la; + int la, nl; enum mdoct ntok; - enum margerr ac; + enum margserr ac; char *p; struct mdoc_node *blk; /* saved block context */ struct mdoc_node *body; /* saved body context */ struct mdoc_node *n; + nl = MDOC_NEWLINE & m->flags; + /* * A macro that spans to the end of the line. This is generally * (but not necessarily) called as the first macro. The block @@ -1082,8 +1191,6 @@ blk_part_imp(MACRO_PROT_ARGS) la = *pos; ac = mdoc_args(m, line, pos, buf, tok, &p); - assert(ARGS_PHRASE != ac); - if (ARGS_ERROR == ac) return(0); if (ARGS_EOLN == ac) @@ -1092,7 +1199,7 @@ blk_part_imp(MACRO_PROT_ARGS) break; if (NULL == body && ARGS_QWORD != ac && - 1 == mdoc_isdelim(p)) { + DELIM_OPEN == mdoc_isdelim(p)) { if ( ! mdoc_word_alloc(m, line, la, p)) return(0); continue; @@ -1125,17 +1232,38 @@ blk_part_imp(MACRO_PROT_ARGS) body = m->last; } + for (n = body->child; n && n->next; n = n->next) + /* Do nothing. */ ; + /* + * End of sentence spacing: if the last node is a text node and + * has a trailing period, then mark it as being end-of-sentence. + */ + + if (n && MDOC_TEXT == n->type && n->string) + if (mandoc_eos(n->string, strlen(n->string))) + n->flags |= MDOC_EOS; + + /* Up-propogate the end-of-space flag. */ + + if (n && (MDOC_EOS & n->flags)) { + body->flags |= MDOC_EOS; + body->parent->flags |= MDOC_EOS; + } + + /* * If we can't rewind to our body, then our scope has already * been closed by another macro (like `Oc' closing `Op'). This * is ugly behaviour nodding its head to OpenBSD's overwhelming * crufty use of `Op' breakage. + * + * FIXME - this should be ifdef'd OpenBSD? */ for (n = m->last; n; n = n->parent) if (body == n) break; - if (NULL == n && ! mdoc_nwarn(m, body, EIMPBRK)) + if (NULL == n && ! mdoc_nmsg(m, body, MANDOCERR_SCOPE)) return(0); if (n && ! rew_last(m, body)) @@ -1143,7 +1271,7 @@ blk_part_imp(MACRO_PROT_ARGS) /* Standard appending of delimiters. */ - if (1 == ppos && ! append_delims(m, line, pos, buf)) + if (nl && ! append_delims(m, line, pos, buf)) return(0); /* Rewind scope, if applicable. */ @@ -1158,13 +1286,15 @@ blk_part_imp(MACRO_PROT_ARGS) static int blk_part_exp(MACRO_PROT_ARGS) { - int la; - enum margerr ac; + int la, nl; + enum margserr ac; struct mdoc_node *head; /* keep track of head */ struct mdoc_node *body; /* keep track of body */ char *p; enum mdoct ntok; + nl = MDOC_NEWLINE & m->flags; + /* * The opening of an explicit macro having zero or more leading * punctuation nodes; a head with optional single element (the @@ -1185,12 +1315,10 @@ blk_part_exp(MACRO_PROT_ARGS) if (ARGS_EOLN == ac) break; - assert(ARGS_PHRASE != ac); - /* Flush out leading punctuation. */ if (NULL == head && ARGS_QWORD != ac && - 1 == mdoc_isdelim(p)) { + DELIM_OPEN == mdoc_isdelim(p)) { assert(NULL == body); if ( ! mdoc_word_alloc(m, line, la, p)) return(0); @@ -1259,22 +1387,25 @@ blk_part_exp(MACRO_PROT_ARGS) /* Standard appending of delimiters. */ - if (ppos > 1) + if ( ! nl) return(1); - return(append_delims(m, line, pos, buf)); } +/* ARGSUSED */ static int in_line_argn(MACRO_PROT_ARGS) { - int la, flushed, j, c, maxargs; - enum margerr ac; + int la, flushed, j, maxargs, nl; + enum margserr ac; + enum margverr av; struct mdoc_arg *arg; char *p; enum mdoct ntok; + nl = MDOC_NEWLINE & m->flags; + /* * A line macro that has a fixed number of arguments (maxargs). * Only open the scope once the first non-leading-punctuation is @@ -1303,16 +1434,16 @@ in_line_argn(MACRO_PROT_ARGS) for (arg = NULL; ; ) { la = *pos; - c = mdoc_argv(m, line, tok, &arg, pos, buf); + av = mdoc_argv(m, line, tok, &arg, pos, buf); - if (ARGV_WORD == c) { + if (ARGV_WORD == av) { *pos = la; break; } - if (ARGV_EOLN == c) + if (ARGV_EOLN == av) break; - if (ARGV_ARG == c) + if (ARGV_ARG == av) continue; mdoc_argv_free(arg); @@ -1332,7 +1463,7 @@ in_line_argn(MACRO_PROT_ARGS) if ( ! (MDOC_IGNDELIM & mdoc_macros[tok].flags) && ARGS_QWORD != ac && - 0 == j && 1 == mdoc_isdelim(p)) { + 0 == j && DELIM_OPEN == mdoc_isdelim(p)) { if ( ! mdoc_word_alloc(m, line, la, p)) return(0); continue; @@ -1360,7 +1491,8 @@ in_line_argn(MACRO_PROT_ARGS) if ( ! (MDOC_IGNDELIM & mdoc_macros[tok].flags) && ARGS_QWORD != ac && - ! flushed && mdoc_isdelim(p)) { + ! flushed && + DELIM_NONE != mdoc_isdelim(p)) { if ( ! rew_elem(m, tok)) return(0); flushed = 1; @@ -1394,8 +1526,7 @@ in_line_argn(MACRO_PROT_ARGS) if ( ! flushed && ! rew_elem(m, tok)) return(0); - - if (ppos > 1) + if ( ! nl) return(1); return(append_delims(m, line, pos, buf)); } @@ -1404,8 +1535,9 @@ in_line_argn(MACRO_PROT_ARGS) static int in_line_eoln(MACRO_PROT_ARGS) { - int c, la; - enum margerr ac; + int la; + enum margserr ac; + enum margverr av; struct mdoc_arg *arg; char *p; enum mdoct ntok; @@ -1416,15 +1548,15 @@ in_line_eoln(MACRO_PROT_ARGS) for (arg = NULL; ; ) { la = *pos; - c = mdoc_argv(m, line, tok, &arg, pos, buf); + av = mdoc_argv(m, line, tok, &arg, pos, buf); - if (ARGV_WORD == c) { + if (ARGV_WORD == av) { *pos = la; break; } - if (ARGV_EOLN == c) + if (ARGV_EOLN == av) break; - if (ARGV_ARG == c) + if (ARGV_ARG == av) continue; mdoc_argv_free(arg); @@ -1470,13 +1602,16 @@ in_line_eoln(MACRO_PROT_ARGS) static int ctx_synopsis(MACRO_PROT_ARGS) { + int nl; + nl = MDOC_NEWLINE & m->flags; + /* If we're not in the SYNOPSIS, go straight to in-line. */ if (SEC_SYNOPSIS != m->lastsec) return(in_line(m, tok, line, ppos, pos, buf)); /* If we're a nested call, same place. */ - if (ppos > 1) + if ( ! nl) return(in_line(m, tok, line, ppos, pos, buf)); /* @@ -1494,7 +1629,7 @@ static int obsolete(MACRO_PROT_ARGS) { - return(mdoc_pwarn(m, line, ppos, EOBS)); + return(mdoc_pmsg(m, line, ppos, MANDOCERR_MACROOBS)); } @@ -1507,14 +1642,13 @@ static int phrase(struct mdoc *m, int line, int ppos, char *buf) { int la, pos; - enum margerr ac; + enum margserr ac; enum mdoct ntok; char *p; for (pos = ppos; ; ) { la = pos; - /* Note: no calling context! */ ac = mdoc_zargs(m, line, &pos, buf, 0, &p); if (ARGS_ERROR == ac) @@ -1539,3 +1673,64 @@ phrase(struct mdoc *m, int line, int ppos, char *buf) } +static int +phrase_ta(MACRO_PROT_ARGS) +{ + int la; + enum mdoct ntok; + enum margserr ac; + struct mdoc_node *n; + char *p; + + /* + * FIXME: this is overly restrictive: if the `Ta' is unexpected, + * it should simply error out with ARGSLOST. + */ + + n = m->last; + if ( ! rew_sub(MDOC_BODY, m, MDOC_It, line, ppos)) + return(0); + + /* + * FIXME: this is necessary in bogus constructions like + * .Bl -column foo bar + * .Sy foo Ta bar + * It is, however, an ugly way to do it. + * + * XXX; remove this when the above construct builds an implied + * `It' marker. + */ + if (NULL == m->last || + MDOC_BODY != m->last->type || + MDOC_It != m->last->tok) { + swarn(m, tok, line, ppos, n); + return(0); + } + + if ( ! mdoc_body_alloc(m, line, ppos, MDOC_It)) + return(0); + + for (;;) { + la = *pos; + ac = mdoc_zargs(m, line, pos, buf, 0, &p); + + if (ARGS_ERROR == ac) + return(0); + if (ARGS_EOLN == ac) + break; + + ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup_raw(p); + + if (MDOC_MAX == ntok) { + if ( ! mdoc_word_alloc(m, line, la, p)) + return(0); + continue; + } + + if ( ! mdoc_macro(m, ntok, line, la, pos, buf)) + return(0); + return(append_delims(m, line, pos, buf)); + } + + return(1); +}