Annotation of mandoc/man.c, Revision 1.99
1.99 ! kristaps 1: /* $Id: man.c,v 1.98 2011/02/06 22:02:58 kristaps Exp $ */
1.1 kristaps 2: /*
1.82 schwarze 3: * Copyright (c) 2008, 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv>
1.1 kristaps 4: *
5: * Permission to use, copy, modify, and distribute this software for any
1.18 kristaps 6: * purpose with or without fee is hereby granted, provided that the above
7: * copyright notice and this permission notice appear in all copies.
1.1 kristaps 8: *
1.18 kristaps 9: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.1 kristaps 16: */
1.47 kristaps 17: #ifdef HAVE_CONFIG_H
18: #include "config.h"
19: #endif
20:
1.41 kristaps 21: #include <sys/types.h>
22:
1.1 kristaps 23: #include <assert.h>
24: #include <stdarg.h>
25: #include <stdlib.h>
26: #include <stdio.h>
27: #include <string.h>
28:
1.74 kristaps 29: #include "mandoc.h"
1.1 kristaps 30: #include "libman.h"
1.45 kristaps 31: #include "libmandoc.h"
1.1 kristaps 32:
33: const char *const __man_macronames[MAN_MAX] = {
1.21 kristaps 34: "br", "TH", "SH", "SS",
1.1 kristaps 35: "TP", "LP", "PP", "P",
36: "IP", "HP", "SM", "SB",
37: "BI", "IB", "BR", "RB",
1.11 kristaps 38: "R", "B", "I", "IR",
1.92 kristaps 39: "RI", "na", "sp", "nf",
40: "fi", "RE", "RS", "DT",
41: "UC", "PD", "AT", "in",
42: "ft"
1.1 kristaps 43: };
44:
45: const char * const *man_macronames = __man_macronames;
46:
1.97 kristaps 47: static struct man_node *man_node_alloc(struct man *, int, int,
1.53 kristaps 48: enum man_type, enum mant);
1.1 kristaps 49: static int man_node_append(struct man *,
50: struct man_node *);
1.94 kristaps 51: static int man_span_alloc(struct man *,
52: const struct tbl_span *);
1.54 kristaps 53: static void man_node_free(struct man_node *);
54: static void man_node_unlink(struct man *,
55: struct man_node *);
1.72 kristaps 56: static int man_ptext(struct man *, int, char *, int);
1.79 kristaps 57: static int man_pmacro(struct man *, int, char *, int);
1.2 kristaps 58: static void man_free1(struct man *);
1.45 kristaps 59: static void man_alloc1(struct man *);
1.94 kristaps 60: static int man_descope(struct man *, int, int);
1.1 kristaps 61:
62:
63: const struct man_node *
1.2 kristaps 64: man_node(const struct man *m)
1.1 kristaps 65: {
66:
1.96 kristaps 67: assert( ! (MAN_HALT & m->flags));
68: return(m->first);
1.1 kristaps 69: }
70:
71:
72: const struct man_meta *
1.2 kristaps 73: man_meta(const struct man *m)
1.1 kristaps 74: {
75:
1.96 kristaps 76: assert( ! (MAN_HALT & m->flags));
77: return(&m->meta);
1.1 kristaps 78: }
79:
80:
1.45 kristaps 81: void
1.1 kristaps 82: man_reset(struct man *man)
83: {
84:
1.2 kristaps 85: man_free1(man);
1.45 kristaps 86: man_alloc1(man);
1.1 kristaps 87: }
88:
89:
90: void
91: man_free(struct man *man)
92: {
93:
1.2 kristaps 94: man_free1(man);
1.1 kristaps 95: free(man);
96: }
97:
98:
99: struct man *
1.87 schwarze 100: man_alloc(struct regset *regs, void *data, mandocmsg msg)
1.1 kristaps 101: {
102: struct man *p;
103:
1.45 kristaps 104: p = mandoc_calloc(1, sizeof(struct man));
1.2 kristaps 105:
1.40 kristaps 106: man_hash_init();
1.4 kristaps 107: p->data = data;
1.74 kristaps 108: p->msg = msg;
1.79 kristaps 109: p->regs = regs;
1.45 kristaps 110:
111: man_alloc1(p);
1.1 kristaps 112: return(p);
113: }
114:
115:
116: int
117: man_endparse(struct man *m)
118: {
119:
1.96 kristaps 120: assert( ! (MAN_HALT & m->flags));
121: if (man_macroend(m))
1.3 kristaps 122: return(1);
123: m->flags |= MAN_HALT;
124: return(0);
1.1 kristaps 125: }
126:
127:
128: int
1.79 kristaps 129: man_parseln(struct man *m, int ln, char *buf, int offs)
1.1 kristaps 130: {
131:
1.97 kristaps 132: m->flags |= MAN_NEWLINE;
133:
1.96 kristaps 134: assert( ! (MAN_HALT & m->flags));
1.72 kristaps 135: return(('.' == buf[offs] || '\'' == buf[offs]) ?
1.79 kristaps 136: man_pmacro(m, ln, buf, offs) :
1.72 kristaps 137: man_ptext(m, ln, buf, offs));
1.1 kristaps 138: }
139:
140:
1.2 kristaps 141: static void
142: man_free1(struct man *man)
143: {
144:
145: if (man->first)
1.54 kristaps 146: man_node_delete(man, man->first);
1.2 kristaps 147: if (man->meta.title)
148: free(man->meta.title);
1.6 kristaps 149: if (man->meta.source)
150: free(man->meta.source);
1.75 kristaps 151: if (man->meta.rawdate)
152: free(man->meta.rawdate);
1.2 kristaps 153: if (man->meta.vol)
154: free(man->meta.vol);
1.68 kristaps 155: if (man->meta.msec)
156: free(man->meta.msec);
1.2 kristaps 157: }
158:
159:
1.45 kristaps 160: static void
1.2 kristaps 161: man_alloc1(struct man *m)
162: {
163:
1.44 kristaps 164: memset(&m->meta, 0, sizeof(struct man_meta));
1.2 kristaps 165: m->flags = 0;
1.45 kristaps 166: m->last = mandoc_calloc(1, sizeof(struct man_node));
1.2 kristaps 167: m->first = m->last;
168: m->last->type = MAN_ROOT;
1.54 kristaps 169: m->last->tok = MAN_MAX;
1.2 kristaps 170: m->next = MAN_NEXT_CHILD;
171: }
172:
173:
1.1 kristaps 174: static int
175: man_node_append(struct man *man, struct man_node *p)
176: {
177:
178: assert(man->last);
179: assert(man->first);
180: assert(MAN_ROOT != p->type);
181:
182: switch (man->next) {
183: case (MAN_NEXT_SIBLING):
184: man->last->next = p;
185: p->prev = man->last;
186: p->parent = man->last->parent;
187: break;
188: case (MAN_NEXT_CHILD):
189: man->last->child = p;
190: p->parent = man->last;
191: break;
192: default:
193: abort();
194: /* NOTREACHED */
195: }
1.22 kristaps 196:
1.54 kristaps 197: assert(p->parent);
1.22 kristaps 198: p->parent->nchild++;
1.1 kristaps 199:
1.29 kristaps 200: if ( ! man_valid_pre(man, p))
201: return(0);
202:
203: switch (p->type) {
204: case (MAN_HEAD):
205: assert(MAN_BLOCK == p->parent->type);
206: p->parent->head = p;
207: break;
208: case (MAN_BODY):
209: assert(MAN_BLOCK == p->parent->type);
210: p->parent->body = p;
211: break;
212: default:
213: break;
214: }
215:
1.2 kristaps 216: man->last = p;
217:
1.1 kristaps 218: switch (p->type) {
1.94 kristaps 219: case (MAN_TBL):
220: /* FALLTHROUGH */
1.2 kristaps 221: case (MAN_TEXT):
222: if ( ! man_valid_post(man))
223: return(0);
1.1 kristaps 224: break;
225: default:
226: break;
227: }
228:
229: return(1);
230: }
231:
232:
233: static struct man_node *
1.97 kristaps 234: man_node_alloc(struct man *m, int line, int pos,
235: enum man_type type, enum mant tok)
1.1 kristaps 236: {
237: struct man_node *p;
238:
1.45 kristaps 239: p = mandoc_calloc(1, sizeof(struct man_node));
1.1 kristaps 240: p->line = line;
241: p->pos = pos;
242: p->type = type;
1.16 kristaps 243: p->tok = tok;
1.97 kristaps 244:
245: if (MAN_NEWLINE & m->flags)
246: p->flags |= MAN_LINE;
247: m->flags &= ~MAN_NEWLINE;
1.1 kristaps 248: return(p);
249: }
250:
251:
252: int
1.53 kristaps 253: man_elem_alloc(struct man *m, int line, int pos, enum mant tok)
1.1 kristaps 254: {
255: struct man_node *p;
256:
1.97 kristaps 257: p = man_node_alloc(m, line, pos, MAN_ELEM, tok);
1.30 kristaps 258: if ( ! man_node_append(m, p))
259: return(0);
260: m->next = MAN_NEXT_CHILD;
261: return(1);
1.1 kristaps 262: }
263:
264:
265: int
1.53 kristaps 266: man_head_alloc(struct man *m, int line, int pos, enum mant tok)
1.29 kristaps 267: {
268: struct man_node *p;
269:
1.97 kristaps 270: p = man_node_alloc(m, line, pos, MAN_HEAD, tok);
1.29 kristaps 271: if ( ! man_node_append(m, p))
272: return(0);
273: m->next = MAN_NEXT_CHILD;
274: return(1);
275: }
276:
277:
278: int
1.53 kristaps 279: man_body_alloc(struct man *m, int line, int pos, enum mant tok)
1.29 kristaps 280: {
281: struct man_node *p;
282:
1.97 kristaps 283: p = man_node_alloc(m, line, pos, MAN_BODY, tok);
1.29 kristaps 284: if ( ! man_node_append(m, p))
285: return(0);
286: m->next = MAN_NEXT_CHILD;
287: return(1);
288: }
289:
290:
291: int
1.53 kristaps 292: man_block_alloc(struct man *m, int line, int pos, enum mant tok)
1.29 kristaps 293: {
294: struct man_node *p;
295:
1.97 kristaps 296: p = man_node_alloc(m, line, pos, MAN_BLOCK, tok);
1.29 kristaps 297: if ( ! man_node_append(m, p))
298: return(0);
299: m->next = MAN_NEXT_CHILD;
300: return(1);
301: }
302:
1.94 kristaps 303: static int
304: man_span_alloc(struct man *m, const struct tbl_span *span)
305: {
306: struct man_node *n;
307:
1.98 kristaps 308: n = man_node_alloc(m, span->line, 0, MAN_TBL, MAN_MAX);
1.95 kristaps 309: n->span = span;
1.94 kristaps 310:
311: if ( ! man_node_append(m, n))
312: return(0);
313:
314: m->next = MAN_NEXT_SIBLING;
315: return(1);
316: }
1.29 kristaps 317:
1.61 kristaps 318: int
319: man_word_alloc(struct man *m, int line, int pos, const char *word)
1.1 kristaps 320: {
1.31 kristaps 321: struct man_node *n;
1.61 kristaps 322: size_t sv, len;
323:
324: len = strlen(word);
1.1 kristaps 325:
1.97 kristaps 326: n = man_node_alloc(m, line, pos, MAN_TEXT, MAN_MAX);
1.45 kristaps 327: n->string = mandoc_malloc(len + 1);
1.61 kristaps 328: sv = strlcpy(n->string, word, len + 1);
1.31 kristaps 329:
330: /* Prohibit truncation. */
331: assert(sv < len + 1);
332:
333: if ( ! man_node_append(m, n))
1.30 kristaps 334: return(0);
1.61 kristaps 335:
1.30 kristaps 336: m->next = MAN_NEXT_SIBLING;
337: return(1);
1.1 kristaps 338: }
339:
340:
1.54 kristaps 341: /*
342: * Free all of the resources held by a node. This does NOT unlink a
343: * node from its context; for that, see man_node_unlink().
344: */
345: static void
1.1 kristaps 346: man_node_free(struct man_node *p)
347: {
348:
349: if (p->string)
350: free(p->string);
351: free(p);
352: }
353:
354:
355: void
1.54 kristaps 356: man_node_delete(struct man *m, struct man_node *p)
1.1 kristaps 357: {
358:
1.54 kristaps 359: while (p->child)
360: man_node_delete(m, p->child);
361:
362: man_node_unlink(m, p);
1.1 kristaps 363: man_node_free(p);
364: }
365:
366:
1.94 kristaps 367: int
368: man_addspan(struct man *m, const struct tbl_span *sp)
369: {
370:
1.96 kristaps 371: assert( ! (MAN_HALT & m->flags));
1.94 kristaps 372: if ( ! man_span_alloc(m, sp))
373: return(0);
1.99 ! kristaps 374: return(man_descope(m, sp->line, 0));
1.94 kristaps 375: }
376:
377: static int
378: man_descope(struct man *m, int line, int offs)
379: {
380: /*
381: * Co-ordinate what happens with having a next-line scope open:
382: * first close out the element scope (if applicable), then close
383: * out the block scope (also if applicable).
384: */
385:
386: if (MAN_ELINE & m->flags) {
387: m->flags &= ~MAN_ELINE;
388: if ( ! man_unscope(m, m->last->parent, MANDOCERR_MAX))
389: return(0);
390: }
391:
392: if ( ! (MAN_BLINE & m->flags))
393: return(1);
394: m->flags &= ~MAN_BLINE;
395:
396: if ( ! man_unscope(m, m->last->parent, MANDOCERR_MAX))
397: return(0);
398: return(man_body_alloc(m, line, offs, m->last->tok));
399: }
400:
401:
1.1 kristaps 402: static int
1.72 kristaps 403: man_ptext(struct man *m, int line, char *buf, int offs)
1.1 kristaps 404: {
1.61 kristaps 405: int i;
1.60 kristaps 406:
407: /* Ignore bogus comments. */
408:
1.72 kristaps 409: if ('\\' == buf[offs] &&
410: '.' == buf[offs + 1] &&
1.93 kristaps 411: '"' == buf[offs + 2]) {
412: man_pmsg(m, line, offs, MANDOCERR_BADCOMMENT);
413: return(1);
414: }
1.31 kristaps 415:
1.35 kristaps 416: /* Literal free-form text whitespace is preserved. */
417:
418: if (MAN_LITERAL & m->flags) {
1.72 kristaps 419: if ( ! man_word_alloc(m, line, offs, buf + offs))
1.35 kristaps 420: return(0);
1.94 kristaps 421: return(man_descope(m, line, offs));
1.35 kristaps 422: }
423:
1.61 kristaps 424: /* Pump blank lines directly into the backend. */
1.31 kristaps 425:
1.72 kristaps 426: for (i = offs; ' ' == buf[i]; i++)
1.31 kristaps 427: /* Skip leading whitespace. */ ;
1.48 kristaps 428:
1.49 kristaps 429: if ('\0' == buf[i]) {
1.61 kristaps 430: /* Allocate a blank entry. */
1.72 kristaps 431: if ( ! man_word_alloc(m, line, offs, ""))
1.31 kristaps 432: return(0);
1.94 kristaps 433: return(man_descope(m, line, offs));
1.31 kristaps 434: }
435:
1.63 kristaps 436: /*
437: * Warn if the last un-escaped character is whitespace. Then
438: * strip away the remaining spaces (tabs stay!).
439: */
1.29 kristaps 440:
1.61 kristaps 441: i = (int)strlen(buf);
442: assert(i);
1.49 kristaps 443:
1.63 kristaps 444: if (' ' == buf[i - 1] || '\t' == buf[i - 1]) {
1.64 kristaps 445: if (i > 1 && '\\' != buf[i - 2])
1.93 kristaps 446: man_pmsg(m, line, i - 1, MANDOCERR_EOLNSPACE);
1.63 kristaps 447:
448: for (--i; i && ' ' == buf[i]; i--)
449: /* Spin back to non-space. */ ;
450:
451: /* Jump ahead of escaped whitespace. */
452: i += '\\' == buf[i] ? 2 : 1;
453:
454: buf[i] = '\0';
455: }
1.49 kristaps 456:
1.72 kristaps 457: if ( ! man_word_alloc(m, line, offs, buf + offs))
1.1 kristaps 458: return(0);
1.65 kristaps 459:
460: /*
461: * End-of-sentence check. If the last character is an unescaped
462: * EOS character, then flag the node as being the end of a
463: * sentence. The front-end will know how to interpret this.
464: */
1.67 kristaps 465:
1.65 kristaps 466: assert(i);
1.83 schwarze 467: if (mandoc_eos(buf, (size_t)i, 0))
1.65 kristaps 468: m->last->flags |= MAN_EOS;
1.31 kristaps 469:
1.94 kristaps 470: return(man_descope(m, line, offs));
1.1 kristaps 471: }
472:
473:
1.96 kristaps 474: static int
1.79 kristaps 475: man_pmacro(struct man *m, int ln, char *buf, int offs)
1.1 kristaps 476: {
1.58 kristaps 477: int i, j, ppos;
1.53 kristaps 478: enum mant tok;
1.34 kristaps 479: char mac[5];
480: struct man_node *n;
1.1 kristaps 481:
482: /* Comments and empties are quickly ignored. */
483:
1.72 kristaps 484: offs++;
485:
486: if ('\0' == buf[offs])
1.46 kristaps 487: return(1);
1.1 kristaps 488:
1.72 kristaps 489: i = offs;
1.9 kristaps 490:
1.56 kristaps 491: /*
492: * Skip whitespace between the control character and initial
493: * text. "Whitespace" is both spaces and tabs.
494: */
1.62 kristaps 495:
1.57 kristaps 496: if (' ' == buf[i] || '\t' == buf[i]) {
1.9 kristaps 497: i++;
1.56 kristaps 498: while (buf[i] && (' ' == buf[i] || '\t' == buf[i]))
1.1 kristaps 499: i++;
1.48 kristaps 500: if ('\0' == buf[i])
1.11 kristaps 501: goto out;
1.1 kristaps 502: }
503:
1.10 kristaps 504: ppos = i;
505:
1.86 schwarze 506: /*
507: * Copy the first word into a nil-terminated buffer.
508: * Stop copying when a tab, space, or eoln is encountered.
509: */
1.1 kristaps 510:
1.86 schwarze 511: j = 0;
512: while (j < 4 && '\0' != buf[i] && ' ' != buf[i] && '\t' != buf[i])
513: mac[j++] = buf[i++];
1.46 kristaps 514: mac[j] = '\0';
1.1 kristaps 515:
1.87 schwarze 516: tok = (j > 0 && j < 4) ? man_hash_find(mac) : MAN_MAX;
517: if (MAN_MAX == tok) {
1.90 kristaps 518: man_vmsg(m, MANDOCERR_MACRO, ln, ppos, "%s", buf + ppos - 1);
1.12 kristaps 519: return(1);
1.1 kristaps 520: }
521:
522: /* The macro is sane. Jump to the next word. */
523:
524: while (buf[i] && ' ' == buf[i])
525: i++;
526:
1.62 kristaps 527: /*
528: * Trailing whitespace. Note that tabs are allowed to be passed
529: * into the parser as "text", so we only warn about spaces here.
530: */
1.48 kristaps 531:
532: if ('\0' == buf[i] && ' ' == buf[i - 1])
1.93 kristaps 533: man_pmsg(m, ln, i - 1, MANDOCERR_EOLNSPACE);
1.48 kristaps 534:
1.50 kristaps 535: /*
1.90 kristaps 536: * Remove prior ELINE macro, as it's being clobbered by a new
1.51 kristaps 537: * macro. Note that NSCOPED macros do not close out ELINE
538: * macros---they don't print text---so we let those slip by.
1.50 kristaps 539: */
1.34 kristaps 540:
1.53 kristaps 541: if ( ! (MAN_NSCOPED & man_macros[tok].flags) &&
1.51 kristaps 542: m->flags & MAN_ELINE) {
1.90 kristaps 543: n = m->last;
544: assert(MAN_TEXT != n->type);
1.51 kristaps 545:
1.90 kristaps 546: /* Remove repeated NSCOPED macros causing ELINE. */
1.51 kristaps 547:
1.90 kristaps 548: if (MAN_NSCOPED & man_macros[n->tok].flags)
549: n = n->parent;
1.51 kristaps 550:
1.90 kristaps 551: man_vmsg(m, MANDOCERR_LINESCOPE, n->line, n->pos,
552: "%s", man_macronames[n->tok]);
1.34 kristaps 553:
1.54 kristaps 554: man_node_delete(m, n);
1.34 kristaps 555: m->flags &= ~MAN_ELINE;
556: }
557:
1.59 kristaps 558: /*
559: * Save the fact that we're in the next-line for a block. In
560: * this way, embedded roff instructions can "remember" state
561: * when they exit.
562: */
563:
564: if (MAN_BLINE & m->flags)
565: m->flags |= MAN_BPLINE;
566:
567: /* Call to handler... */
1.1 kristaps 568:
1.53 kristaps 569: assert(man_macros[tok].fp);
1.79 kristaps 570: if ( ! (*man_macros[tok].fp)(m, tok, ln, ppos, &i, buf))
1.1 kristaps 571: goto err;
572:
1.11 kristaps 573: out:
1.50 kristaps 574: /*
575: * We weren't in a block-line scope when entering the
576: * above-parsed macro, so return.
577: */
578:
1.58 kristaps 579: if ( ! (MAN_BPLINE & m->flags)) {
1.50 kristaps 580: m->flags &= ~MAN_ILINE;
1.29 kristaps 581: return(1);
1.50 kristaps 582: }
1.58 kristaps 583: m->flags &= ~MAN_BPLINE;
1.50 kristaps 584:
585: /*
586: * If we're in a block scope, then allow this macro to slip by
587: * without closing scope around it.
588: */
589:
590: if (MAN_ILINE & m->flags) {
591: m->flags &= ~MAN_ILINE;
592: return(1);
593: }
1.29 kristaps 594:
595: /*
596: * If we've opened a new next-line element scope, then return
597: * now, as the next line will close out the block scope.
598: */
599:
600: if (MAN_ELINE & m->flags)
601: return(1);
602:
603: /* Close out the block scope opened in the prior line. */
1.11 kristaps 604:
1.29 kristaps 605: assert(MAN_BLINE & m->flags);
606: m->flags &= ~MAN_BLINE;
1.11 kristaps 607:
1.74 kristaps 608: if ( ! man_unscope(m, m->last->parent, MANDOCERR_MAX))
1.29 kristaps 609: return(0);
1.72 kristaps 610: return(man_body_alloc(m, ln, offs, m->last->tok));
1.1 kristaps 611:
612: err: /* Error out. */
613:
1.2 kristaps 614: m->flags |= MAN_HALT;
1.1 kristaps 615: return(0);
616: }
1.3 kristaps 617:
1.4 kristaps 618:
619: int
1.74 kristaps 620: man_vmsg(struct man *man, enum mandocerr t,
621: int ln, int pos, const char *fmt, ...)
1.4 kristaps 622: {
623: char buf[256];
624: va_list ap;
625:
626: va_start(ap, fmt);
1.74 kristaps 627: vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
1.4 kristaps 628: va_end(ap);
1.74 kristaps 629: return((*man->msg)(t, man->data, ln, pos, buf));
1.51 kristaps 630: }
631:
632:
1.54 kristaps 633: /*
634: * Unlink a node from its context. If "m" is provided, the last parse
635: * point will also be adjusted accordingly.
636: */
637: static void
1.51 kristaps 638: man_node_unlink(struct man *m, struct man_node *n)
639: {
640:
1.54 kristaps 641: /* Adjust siblings. */
642:
643: if (n->prev)
1.51 kristaps 644: n->prev->next = n->next;
1.54 kristaps 645: if (n->next)
646: n->next->prev = n->prev;
647:
648: /* Adjust parent. */
649:
650: if (n->parent) {
651: n->parent->nchild--;
652: if (n->parent->child == n)
653: n->parent->child = n->prev ? n->prev : n->next;
654: }
655:
656: /* Adjust parse point, if applicable. */
657:
658: if (m && m->last == n) {
659: /*XXX: this can occur when bailing from validation. */
660: /*assert(NULL == n->next);*/
661: if (n->prev) {
1.51 kristaps 662: m->last = n->prev;
663: m->next = MAN_NEXT_SIBLING;
1.54 kristaps 664: } else {
1.51 kristaps 665: m->last = n->parent;
666: m->next = MAN_NEXT_CHILD;
667: }
668: }
669:
1.54 kristaps 670: if (m && m->first == n)
671: m->first = NULL;
1.23 kristaps 672: }
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