File: hdrline.c

package info (click to toggle)
mutt 1.5.23-3
  • links: PTS, VCS
  • area: main
  • in suites: jessie, jessie-kfreebsd
  • size: 23,276 kB
  • ctags: 16,186
  • sloc: ansic: 86,841; sh: 4,619; perl: 991; makefile: 759; yacc: 318; awk: 17
file content (770 lines) | stat: -rw-r--r-- 19,546 bytes parent folder | download
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
/*
 * Copyright (C) 1996-2000,2002,2007 Michael R. Elkins <me@mutt.org>
 * 
 *     This program is free software; you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation; either version 2 of the License, or
 *     (at your option) any later version.
 * 
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 * 
 *     You should have received a copy of the GNU General Public License
 *     along with this program; if not, write to the Free Software
 *     Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */ 

#if HAVE_CONFIG_H
# include "config.h"
#endif

#include "mutt.h"
#include "mutt_curses.h"
#include "sort.h"
#include "charset.h"
#include "mutt_crypt.h"
#include "mutt_idna.h"

#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#include <locale.h>

#ifdef HAVE_ALLOCA_H
#include <alloca.h>
#endif

int mutt_is_mail_list (ADDRESS *addr)
{
  if (!mutt_match_rx_list (addr->mailbox, UnMailLists))
    return mutt_match_rx_list (addr->mailbox, MailLists);
  return 0;
}

int mutt_is_subscribed_list (ADDRESS *addr)
{
  if (!mutt_match_rx_list (addr->mailbox, UnMailLists)
      && !mutt_match_rx_list (addr->mailbox, UnSubscribedLists))
    return mutt_match_rx_list (addr->mailbox, SubscribedLists);
  return 0;
}

/* Search for a mailing list in the list of addresses pointed to by adr.
 * If one is found, print pfx and the name of the list into buf, then
 * return 1.  Otherwise, simply return 0.
 */
static int
check_for_mailing_list (ADDRESS *adr, char *pfx, char *buf, int buflen)
{
  for (; adr; adr = adr->next)
  {
    if (mutt_is_subscribed_list (adr))
    {
      if (pfx && buf && buflen)
	snprintf (buf, buflen, "%s%s", pfx, mutt_get_name (adr));
      return 1;
    }
  }
  return 0;
}

/* Search for a mailing list in the list of addresses pointed to by adr.
 * If one is found, print the address of the list into buf, then return 1.
 * Otherwise, simply return 0.
 */
static int
check_for_mailing_list_addr (ADDRESS *adr, char *buf, int buflen)
{
  for (; adr; adr = adr->next)
  {
    if (mutt_is_subscribed_list (adr))
    {
      if (buf && buflen)
	snprintf (buf, buflen, "%s", adr->mailbox);
      return 1;
    }
  }
  return 0;
}


static int first_mailing_list (char *buf, size_t buflen, ADDRESS *a)
{
  for (; a; a = a->next)
  {
    if (mutt_is_subscribed_list (a))
    {
      mutt_save_path (buf, buflen, a);
      return 1;
    }
  }
  return 0;
}

static void make_from (ENVELOPE *hdr, char *buf, size_t len, int do_lists)
{
  int me;

  me = mutt_addr_is_user (hdr->from);

  if (do_lists || me)
  {
    if (check_for_mailing_list (hdr->to, "To ", buf, len))
      return;
    if (check_for_mailing_list (hdr->cc, "Cc ", buf, len))
      return;
  }

  if (me && hdr->to)
    snprintf (buf, len, "To %s", mutt_get_name (hdr->to));
  else if (me && hdr->cc)
    snprintf (buf, len, "Cc %s", mutt_get_name (hdr->cc));
  else if (me && hdr->bcc)
    snprintf (buf, len, "Bcc %s", mutt_get_name (hdr->bcc));
  else if (hdr->from)
    strfcpy (buf, mutt_get_name (hdr->from), len);
  else
    *buf = 0;
}

static void make_from_addr (ENVELOPE *hdr, char *buf, size_t len, int do_lists)
{
  int me;

  me = mutt_addr_is_user (hdr->from);

  if (do_lists || me)
  {
    if (check_for_mailing_list_addr (hdr->to, buf, len))
      return;
    if (check_for_mailing_list_addr (hdr->cc, buf, len))
      return;
  }

  if (me && hdr->to)
    snprintf (buf, len, "%s", hdr->to->mailbox);
  else if (me && hdr->cc)
    snprintf (buf, len, "%s", hdr->cc->mailbox);
  else if (hdr->from)
    strfcpy (buf, hdr->from->mailbox, len);
  else
    *buf = 0;
}

static int user_in_addr (ADDRESS *a)
{
  for (; a; a = a->next)
    if (mutt_addr_is_user (a))
      return 1;
  return 0;
}

/* Return values:
 * 0: user is not in list
 * 1: user is unique recipient
 * 2: user is in the TO list
 * 3: user is in the CC list
 * 4: user is originator
 * 5: sent to a subscribed mailinglist
 */
int mutt_user_is_recipient (HEADER *h)
{
  ENVELOPE *env = h->env;

  if(!h->recip_valid)
  {
    h->recip_valid = 1;
    
    if (mutt_addr_is_user (env->from))
      h->recipient = 4;
    else if (user_in_addr (env->to))
    {
      if (env->to->next || env->cc)
	h->recipient = 2; /* non-unique recipient */
      else
	h->recipient = 1; /* unique recipient */
    }
    else if (user_in_addr (env->cc))
      h->recipient = 3;
    else if (check_for_mailing_list (env->to, NULL, NULL, 0))
      h->recipient = 5;
    else if (check_for_mailing_list (env->cc, NULL, NULL, 0))
      h->recipient = 5;
    else
      h->recipient = 0;
  }
  
  return h->recipient;
}

/* %a = address of author
 * %A = reply-to address (if present; otherwise: address of author
 * %b = filename of the originating folder
 * %B = the list to which the letter was sent
 * %c = size of message in bytes
 * %C = current message number
 * %d = date and time of message using $date_format and sender's timezone
 * %D = date and time of message using $date_format and local timezone
 * %e = current message number in thread
 * %E = number of messages in current thread
 * %f = entire from line
 * %F = like %n, unless from self
 * %g = newsgroup name (if compiled with NNTP support)
 * %i = message-id
 * %l = number of lines in the message
 * %L = like %F, except `lists' are displayed first
 * %m = number of messages in the mailbox
 * %n = name of author
 * %N = score
 * %O = like %L, except using address instead of name
 * %P = progress indicator for builtin pager
 * %R = `x-comment-to:' field (if present and compiled with NNTP support)
 * %s = subject
 * %S = short message status (e.g., N/O/D/!/r/-)
 * %t = `to:' field (recipients)
 * %T = $to_chars
 * %u = user (login) name of author
 * %v = first name of author, unless from self
 * %W = where user is (organization)
 * %X = number of MIME attachments
 * %y = `x-label:' field (if present)
 * %Y = `x-label:' field (if present, tree unfolded, and != parent's x-label)
 * %Z = status flags	*/

static const char *
hdr_format_str (char *dest,
		size_t destlen,
		size_t col,
		char op,
		const char *src,
		const char *prefix,
		const char *ifstring,
		const char *elsestring,
		unsigned long data,
		format_flag flags)
{
  struct hdr_format_info *hfi = (struct hdr_format_info *) data;
  HEADER *hdr, *htmp;
  CONTEXT *ctx;
  char fmt[SHORT_STRING], buf2[LONG_STRING], ch, *p;
  int do_locales, i;
  int optional = (flags & M_FORMAT_OPTIONAL);
  int threads = ((Sort & SORT_MASK) == SORT_THREADS);
  int is_index = (flags & M_FORMAT_INDEX);
#define THREAD_NEW (threads && hdr->collapsed && hdr->num_hidden > 1 && mutt_thread_contains_unread (ctx, hdr) == 1)
#define THREAD_OLD (threads && hdr->collapsed && hdr->num_hidden > 1 && mutt_thread_contains_unread (ctx, hdr) == 2)
  size_t len;

  hdr = hfi->hdr;
  ctx = hfi->ctx;

  dest[0] = 0;
  switch (op)
  {
    case 'A':
      if(hdr->env->reply_to && hdr->env->reply_to->mailbox)
      {
	mutt_format_s (dest, destlen, prefix, mutt_addr_for_display (hdr->env->reply_to));
	break;
      }
      /* fall through if 'A' returns nothing */

    case 'a':
      if(hdr->env->from && hdr->env->from->mailbox)
      {
	mutt_format_s (dest, destlen, prefix, mutt_addr_for_display (hdr->env->from));
      }
      else
        dest[0] = '\0';
      break;

    case 'B':
      if (!first_mailing_list (dest, destlen, hdr->env->to) &&
	  !first_mailing_list (dest, destlen, hdr->env->cc))
	dest[0] = 0;
      if (dest[0])
      {
	strfcpy (buf2, dest, sizeof(buf2));
	mutt_format_s (dest, destlen, prefix, buf2);
	break;
      }
      /* fall through if 'B' returns nothing */

    case 'b':
      if(ctx)
      {
	if ((p = strrchr (ctx->path, '/')))
	  strfcpy (dest, p + 1, destlen);
	else
	  strfcpy (dest, ctx->path, destlen);
      }
      else 
	strfcpy(dest, "(null)", destlen);
      strfcpy (buf2, dest, sizeof(buf2));
      mutt_format_s (dest, destlen, prefix, buf2);
      break;
    
    case 'c':
      mutt_pretty_size (buf2, sizeof (buf2), (long) hdr->content->length);
      mutt_format_s (dest, destlen, prefix, buf2);
      break;

    case 'C':
      snprintf (fmt, sizeof (fmt), "%%%sd", prefix);
      snprintf (dest, destlen, fmt, hdr->msgno + 1);
      break;

    case 'd':
    case 'D':
    case '{':
    case '[':
    case '(':
    case '<':

      /* preprocess $date_format to handle %Z */
      {
	const char *cp;
	struct tm *tm; 
	time_t T;

	p = dest;

	cp = (op == 'd' || op == 'D') ? (NONULL (DateFmt)) : src;
	if (*cp == '!')
	{
	  do_locales = 0;
	  cp++;
	}
	else
	  do_locales = 1;

	len = destlen - 1;
	while (len > 0 && (((op == 'd' || op == 'D') && *cp) ||
			   (op == '{' && *cp != '}') || 
			   (op == '[' && *cp != ']') ||
			   (op == '(' && *cp != ')') ||
			   (op == '<' && *cp != '>')))
	{
	  if (*cp == '%')
	  {
	    cp++;
	    if ((*cp == 'Z' || *cp == 'z') && (op == 'd' || op == '{'))
	    {
	      if (len >= 5)
	      {
		sprintf (p, "%c%02u%02u", hdr->zoccident ? '-' : '+',
			 hdr->zhours, hdr->zminutes);
		p += 5;
		len -= 5;
	      }
	      else
		break; /* not enough space left */
	    }
	    else
	    {
	      if (len >= 2)
	      {
		*p++ = '%';
		*p++ = *cp;
		len -= 2;
	      }
	      else
		break; /* not enough space */
	    }
	    cp++;
	  }
	  else
	  {
	    *p++ = *cp++;
	    len--;
	  }
	}
	*p = 0;

	if (do_locales && Locale)
	  setlocale (LC_TIME, Locale);

	if (op == '[' || op == 'D')
	  tm = localtime (&hdr->date_sent);
	else if (op == '(')
	  tm = localtime (&hdr->received);
	else if (op == '<')
	{
	  T = time (NULL);
	  tm = localtime (&T);
	}
	else
	{
	  /* restore sender's time zone */
	  T = hdr->date_sent;
	  if (hdr->zoccident)
	    T -= (hdr->zhours * 3600 + hdr->zminutes * 60);
	  else
	    T += (hdr->zhours * 3600 + hdr->zminutes * 60);
	  tm = gmtime (&T);
	}

	strftime (buf2, sizeof (buf2), dest, tm);

	if (do_locales)
	  setlocale (LC_TIME, "C");

	mutt_format_s (dest, destlen, prefix, buf2);
	if (len > 0 && op != 'd' && op != 'D') /* Skip ending op */
	  src = cp + 1;
      }
      break;

    case 'e':
      snprintf (fmt, sizeof (fmt), "%%%sd", prefix);
      snprintf (dest, destlen, fmt, mutt_messages_in_thread(ctx, hdr, 1));
      break;

    case 'E':
      if (!optional)
      {
	snprintf (fmt, sizeof (fmt), "%%%sd", prefix);
	snprintf (dest, destlen, fmt, mutt_messages_in_thread(ctx, hdr, 0));
      }
      else if (mutt_messages_in_thread(ctx, hdr, 0) <= 1)
	optional = 0;
      break;

    case 'f':
      buf2[0] = 0;
      rfc822_write_address (buf2, sizeof (buf2), hdr->env->from, 1);
      mutt_format_s (dest, destlen, prefix, buf2);
      break;

    case 'F':
      if (!optional)
      {
        make_from (hdr->env, buf2, sizeof (buf2), 0);
	mutt_format_s (dest, destlen, prefix, buf2);
      }
      else if (mutt_addr_is_user (hdr->env->from))
        optional = 0;
      break;

    case 'H':
      /* (Hormel) spam score */
      if (optional)
	optional = hdr->env->spam ? 1 : 0;

       if (hdr->env->spam)
         mutt_format_s (dest, destlen, prefix, NONULL (hdr->env->spam->data));
       else
         mutt_format_s (dest, destlen, prefix, "");

      break;

#ifdef USE_NNTP
    case 'g':
      mutt_format_s (dest, destlen, prefix, hdr->env->newsgroups ? hdr->env->newsgroups : "");
      break;
#endif

    case 'i':
      mutt_format_s (dest, destlen, prefix, hdr->env->message_id ? hdr->env->message_id : "<no.id>");
      break;

    case 'l':
      if (!optional)
      {
	snprintf (fmt, sizeof (fmt), "%%%sd", prefix);
	snprintf (dest, destlen, fmt, (int) hdr->lines);
      }
      else if (hdr->lines <= 0)
        optional = 0;
      break;

    case 'L':
      if (!optional)
      {
	make_from (hdr->env, buf2, sizeof (buf2), 1);
	mutt_format_s (dest, destlen, prefix, buf2);
      }
      else if (!check_for_mailing_list (hdr->env->to, NULL, NULL, 0) &&
	       !check_for_mailing_list (hdr->env->cc, NULL, NULL, 0))
      {
	optional = 0;
      }
      break;

    case 'm':
      if(ctx)
      {
	snprintf (fmt, sizeof (fmt), "%%%sd", prefix);
	snprintf (dest, destlen, fmt, ctx->msgcount);
      }
      else
	strfcpy(dest, "(null)", destlen);
      break;

    case 'n':
      mutt_format_s (dest, destlen, prefix, mutt_get_name (hdr->env->from));
      break;

    case 'N':
      if (!optional)
      {
	snprintf (fmt, sizeof (fmt), "%%%sd", prefix);
	snprintf (dest, destlen, fmt, hdr->score);
      }
      else
      {
	if (hdr->score == 0)
	  optional = 0;
      }
      break;

    case 'O':
      if (!optional)
      {
	make_from_addr (hdr->env, buf2, sizeof (buf2), 1);
	if (!option (OPTSAVEADDRESS) && (p = strpbrk (buf2, "%@")))
	  *p = 0;
	mutt_format_s (dest, destlen, prefix, buf2);
      }
      else if (!check_for_mailing_list_addr (hdr->env->to, NULL, 0) &&
	       !check_for_mailing_list_addr (hdr->env->cc, NULL, 0))
      {
	optional = 0;
      }
      break;

    case 'M':
      snprintf (fmt, sizeof (fmt), "%%%sd", prefix);
      if (!optional)
      {
	if (threads && is_index && hdr->collapsed && hdr->num_hidden > 1)
	  snprintf (dest, destlen, fmt, hdr->num_hidden);
	else if (is_index && threads)
	  mutt_format_s (dest, destlen, prefix, " ");
	else
	  *dest = '\0';
      }
      else
      {
	if (!(threads && is_index && hdr->collapsed && hdr->num_hidden > 1))
	  optional = 0;
      }
      break;

    case 'P':
      strfcpy(dest, NONULL(hfi->pager_progress), destlen);
      break;

#ifdef USE_NNTP
    case 'R':
      if (!optional)
	mutt_format_s (dest, destlen, prefix, hdr->env->x_comment_to ? hdr->env->x_comment_to : "");
      else if (!hdr->env->x_comment_to)
	optional = 0;
      break;
#endif

    case 's':
      
      if (flags & M_FORMAT_TREE && !hdr->collapsed)
      {
	if (flags & M_FORMAT_FORCESUBJ)
	{
	  mutt_format_s (dest, destlen, "", NONULL (hdr->env->subject));
	  snprintf (buf2, sizeof (buf2), "%s%s", hdr->tree, dest);
	  mutt_format_s_tree (dest, destlen, prefix, buf2);
	}
	else
	  mutt_format_s_tree (dest, destlen, prefix, hdr->tree);
      }
      else
	mutt_format_s (dest, destlen, prefix, NONULL (hdr->env->subject));
      break;

    case 'S':
      if (hdr->deleted)
	ch = 'D';
      else if (hdr->attach_del)
	ch = 'd';
      else if (hdr->tagged)
	ch = '*';
      else if (hdr->flagged)
	ch = '!';
      else if (hdr->replied)
	ch = 'r';
      else if (hdr->read && (ctx && ctx->msgnotreadyet != hdr->msgno))
	ch = '-';
      else if (hdr->old)
	ch = 'O';
      else
	ch = 'N';

      /* FOO - this is probably unsafe, but we are not likely to have such
	 a short string passed into this routine */
      *dest = ch;
      *(dest + 1) = 0;
      break;

    case 't':
      buf2[0] = 0;
      if (!check_for_mailing_list (hdr->env->to, "To ", buf2, sizeof (buf2)) &&
	  !check_for_mailing_list (hdr->env->cc, "Cc ", buf2, sizeof (buf2)))
      {
	if (hdr->env->to)
	  snprintf (buf2, sizeof (buf2), "To %s", mutt_get_name (hdr->env->to));
	else if (hdr->env->cc)
	  snprintf (buf2, sizeof (buf2), "Cc %s", mutt_get_name (hdr->env->cc));
      }
      mutt_format_s (dest, destlen, prefix, buf2);
      break;

    case 'T':
      snprintf (fmt, sizeof (fmt), "%%%sc", prefix);
      snprintf (dest, destlen, fmt,
		(Tochars && ((i = mutt_user_is_recipient (hdr))) < mutt_strlen (Tochars)) ? Tochars[i] : ' ');
      break;

    case 'u':
      if (hdr->env->from && hdr->env->from->mailbox)
      {
	strfcpy (buf2, mutt_addr_for_display (hdr->env->from), sizeof (buf2));
	if ((p = strpbrk (buf2, "%@")))
	  *p = 0;
      }
      else
	buf2[0] = 0;
      mutt_format_s (dest, destlen, prefix, buf2);
      break;

    case 'v':
      if (mutt_addr_is_user (hdr->env->from)) 
      {
	if (hdr->env->to)
	  mutt_format_s (buf2, sizeof (buf2), prefix, mutt_get_name (hdr->env->to));
	else if (hdr->env->cc)
	  mutt_format_s (buf2, sizeof (buf2), prefix, mutt_get_name (hdr->env->cc));
	else
	  *buf2 = 0;
      }
      else
	mutt_format_s (buf2, sizeof (buf2), prefix, mutt_get_name (hdr->env->from));
      if ((p = strpbrk (buf2, " %@")))
	*p = 0;
      mutt_format_s (dest, destlen, prefix, buf2);
      break;

    case 'W':
      if (!optional)
	mutt_format_s (dest, destlen, prefix, hdr->env->organization ? hdr->env->organization : "");
      else if (!hdr->env->organization)
	optional = 0;
      break;

    case 'Z':
    
      ch = ' ';

      if (WithCrypto && hdr->security & GOODSIGN)
        ch = 'S';
      else if (WithCrypto && hdr->security & ENCRYPT)
      	ch = 'P';
      else if (WithCrypto && hdr->security & SIGN)
        ch = 's';
      else if ((WithCrypto & APPLICATION_PGP) && hdr->security & PGPKEY)
        ch = 'K';

      snprintf (buf2, sizeof (buf2),
		"%c%c%c", (THREAD_NEW ? 'n' : (THREAD_OLD ? 'o' : 
		((hdr->read && (ctx && ctx->msgnotreadyet != hdr->msgno))
		? (hdr->replied ? 'r' : ' ') : (hdr->old ? 'O' : 'N')))),
		hdr->deleted ? 'D' : (hdr->attach_del ? 'd' : ch),
		hdr->tagged ? '*' :
		(hdr->flagged ? '!' :
		 (Tochars && ((i = mutt_user_is_recipient (hdr)) < mutt_strlen (Tochars)) ? Tochars[i] : ' ')));
      mutt_format_s (dest, destlen, prefix, buf2);
      break;

    case 'X':
      {
	int count = mutt_count_body_parts (ctx, hdr);

	/* The recursion allows messages without depth to return 0. */
	if (optional)
          optional = count != 0;

        snprintf (fmt, sizeof (fmt), "%%%sd", prefix);
        snprintf (dest, destlen, fmt, count);
      }
      break;

     case 'y':
       if (optional)
	 optional = hdr->env->x_label ? 1 : 0;

       mutt_format_s (dest, destlen, prefix, NONULL (hdr->env->x_label));
       break;
 
    case 'Y':
      if (hdr->env->x_label)
      {
	i = 1;	/* reduce reuse recycle */
	htmp = NULL;
	if (flags & M_FORMAT_TREE
	    && (hdr->thread->prev && hdr->thread->prev->message
		&& hdr->thread->prev->message->env->x_label))
	  htmp = hdr->thread->prev->message;
	else if (flags & M_FORMAT_TREE
		 && (hdr->thread->parent && hdr->thread->parent->message
		     && hdr->thread->parent->message->env->x_label))
	  htmp = hdr->thread->parent->message;
	if (htmp && mutt_strcasecmp (hdr->env->x_label,
				     htmp->env->x_label) == 0)
	  i = 0;
      }
      else
	i = 0;

      if (optional)
	optional = i;

      if (i)
        mutt_format_s (dest, destlen, prefix, NONULL (hdr->env->x_label));
      else
        mutt_format_s (dest, destlen, prefix, "");

      break;

    default:
      snprintf (dest, destlen, "%%%s%c", prefix, op);
      break;
  }

  if (optional)
    mutt_FormatString (dest, destlen, col, ifstring, hdr_format_str, (unsigned long) hfi, flags);
  else if (flags & M_FORMAT_OPTIONAL)
    mutt_FormatString (dest, destlen, col, elsestring, hdr_format_str, (unsigned long) hfi, flags);

  return (src);
#undef THREAD_NEW
#undef THREAD_OLD
}

void
_mutt_make_string (char *dest, size_t destlen, const char *s, CONTEXT *ctx, HEADER *hdr, format_flag flags)
{
  struct hdr_format_info hfi;

  hfi.hdr = hdr;
  hfi.ctx = ctx;
  hfi.pager_progress = 0;

  mutt_FormatString (dest, destlen, 0, s, hdr_format_str, (unsigned long) &hfi, flags);
}

void
mutt_make_string_info (char *dst, size_t dstlen, const char *s, struct hdr_format_info *hfi, format_flag flags)
{
  mutt_FormatString (dst, dstlen, 0, s, hdr_format_str, (unsigned long) hfi, flags);
}