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hdrline.c
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hdrline.c
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/**
* @file
* String processing routines to generate the mail index
*
* @authors
* Copyright (C) 1996-2000,2002,2007 Michael R. Elkins <[email protected]>
* Copyright (C) 2016 Richard Russon <[email protected]>
* Copyright (C) 2016 Ian Zimmerman <[email protected]>
*
* @copyright
* 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, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <ctype.h>
#include <locale.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "mutt.h"
#include "address.h"
#include "body.h"
#include "context.h"
#include "envelope.h"
#include "format_flags.h"
#include "globals.h"
#include "header.h"
#include "lib/lib.h"
#include "mbyte_table.h"
#include "mutt_curses.h"
#include "mutt_idna.h"
#include "ncrypt/ncrypt.h"
#include "options.h"
#include "protos.h"
#include "rfc822.h"
#include "sort.h"
#include "thread.h"
#ifdef USE_NOTMUCH
#include "mutt_notmuch.h"
#endif
/**
* enum FlagChars - Index into the FlagChars variable ($flag_chars)
*/
enum FlagChars
{
FlagCharTagged,
FlagCharImportant,
FlagCharDeleted,
FlagCharDeletedAttach,
FlagCharReplied,
FlagCharOld,
FlagCharNew,
FlagCharOldThread,
FlagCharNewThread,
FlagCharSEmpty,
FlagCharZEmpty
};
bool mutt_is_mail_list(struct Address *addr)
{
if (!mutt_match_rx_list(addr->mailbox, UnMailLists))
return mutt_match_rx_list(addr->mailbox, MailLists);
return false;
}
bool mutt_is_subscribed_list(struct 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 false;
}
/**
* check_for_mailing_list - Search list of addresses for a mailing list
* @param adr List of addreses to search
* @param pfx Prefix string
* @param buf Buffer to store results
* @param buflen Buffer length
* @retval 1 Mailing list found
* @retval 0 No list found
*
* 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.
*/
static bool check_for_mailing_list(struct Address *adr, const 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 true;
}
}
return false;
}
/**
* check_for_mailing_list_addr - Check an address list for a mailing list
*
* If one is found, print the address of the list into buf, then return 1.
* Otherwise, simply return 0.
*/
static bool check_for_mailing_list_addr(struct 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 true;
}
}
return false;
}
static bool first_mailing_list(char *buf, size_t buflen, struct Address *a)
{
for (; a; a = a->next)
{
if (mutt_is_subscribed_list(a))
{
mutt_save_path(buf, buflen, a);
return true;
}
}
return false;
}
/**
* add_index_color - Insert a color marker into a string
* @param buf Buffer to store marker
* @param buflen Buffer length
* @param flags Flags, e.g. MUTT_FORMAT_INDEX
* @param color Color, e.g. MT_COLOR_MESSAGE
* @retval n Number of characters written
*
* The colors are stored as "magic" strings embedded in the text.
*/
static size_t add_index_color(char *buf, size_t buflen, enum FormatFlag flags, char color)
{
int len;
/* only add color markers if we are operating on main index entries. */
if (!(flags & MUTT_FORMAT_INDEX))
return 0;
/* this item is going to be passed to an external filter */
if (flags & MUTT_FORMAT_NOFILTER)
return 0;
if (color == MT_COLOR_INDEX)
{ /* buf might be uninitialized other cases */
len = mutt_strlen(buf);
buf += len;
buflen -= len;
}
if (buflen < 2)
return 0;
buf[0] = MUTT_SPECIAL_INDEX;
buf[1] = color;
buf[2] = '\0';
return 2;
}
/**
* enum FieldType - Header types
*/
enum FieldType
{
DISP_TO,
DISP_CC,
DISP_BCC,
DISP_FROM,
DISP_NUM
};
/**
* get_nth_wchar - Extract one char from a multi-byte table
* @param table Multi-byte table
* @param index Select this character
* @retval ptr String pointer to the character
*
* Extract one multi-byte character from a string table.
* If the index is invalid, then a space character will be returned.
* If the character selected is '\n' (Ctrl-M), then "" will be returned.
*/
static char *get_nth_wchar(struct MbCharTable *table, int index)
{
if (!table || !table->chars || (index < 0) || (index >= table->len))
return " ";
if (table->chars[index][0] == '\r')
return "";
return table->chars[index];
}
/**
* make_from_prefix - Create a prefix for an author field
* @param disp Type of field
* @retval string Prefix string (do not free it)
*
* If $from_chars is set, pick an appropriate character from it.
* If not, use the default prefix: "To", "Cc", etc
*/
static const char *make_from_prefix(enum FieldType disp)
{
/* need 2 bytes at the end, one for the space, another for NUL */
static char padded[8];
static const char *long_prefixes[DISP_NUM] = {
[DISP_TO] = "To ", [DISP_CC] = "Cc ", [DISP_BCC] = "Bcc ", [DISP_FROM] = "",
};
if (!FromChars || !FromChars->chars || (FromChars->len == 0))
return long_prefixes[disp];
char *pchar = get_nth_wchar(FromChars, disp);
if (mutt_strlen(pchar) == 0)
return "";
snprintf(padded, sizeof(padded), "%s ", pchar);
return padded;
}
/**
* make_from - Generate a From: field (with optional prefix)
* @param env Envelope of the email
* @param buf Buffer to store the result
* @param len Size of the buffer
* @param do_lists Should we check for mailing lists?
*
* Generate the %F or %L field in $index_format.
* This is the author, or recipient of the email.
*
* The field can optionally be prefixed by a character from $from_chars.
* If $from_chars is not set, the prefix will be, "To", "Cc", etc
*/
static void make_from(struct Envelope *env, char *buf, size_t len, int do_lists)
{
if (!env || !buf)
return;
bool me;
enum FieldType disp;
struct Address *name = NULL;
me = mutt_addr_is_user(env->from);
if (do_lists || me)
{
if (check_for_mailing_list(env->to, make_from_prefix(DISP_TO), buf, len))
return;
if (check_for_mailing_list(env->cc, make_from_prefix(DISP_CC), buf, len))
return;
}
if (me && env->to)
{
disp = DISP_TO;
name = env->to;
}
else if (me && env->cc)
{
disp = DISP_CC;
name = env->cc;
}
else if (me && env->bcc)
{
disp = DISP_BCC;
name = env->bcc;
}
else if (env->from)
{
disp = DISP_FROM;
name = env->from;
}
else
{
*buf = '\0';
return;
}
snprintf(buf, len, "%s%s", make_from_prefix(disp), mutt_get_name(name));
}
static void make_from_addr(struct Envelope *hdr, char *buf, size_t len, int do_lists)
{
if (!hdr || !buf)
return;
bool 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 bool user_in_addr(struct Address *a)
{
for (; a; a = a->next)
if (mutt_addr_is_user(a))
return true;
return false;
}
/**
* user_is_recipient - Is the user a recipient of the message
* @retval 0 User is not in list
* @retval 1 User is unique recipient
* @retval 2 User is in the TO list
* @retval 3 User is in the CC list
* @retval 4 User is originator
* @retval 5 Sent to a subscribed mailinglist
*/
static int user_is_recipient(struct Header *h)
{
if (!h || !h->env)
return 0;
struct Envelope *env = h->env;
if (!h->recip_valid)
{
h->recip_valid = true;
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;
}
/**
* get_initials - Turn a name into initials
* @param name String to be converted
* @param buf Buffer for the result
* @param buflen Size of the buffer
* @retval 1 on Success
* @retval 0 on Failure
*
* Take a name, e.g. "John F. Kennedy" and reduce it to initials "JFK".
* The function saves the first character from each word. Words are delimited
* by whitespace, or hyphens (so "Jean-Pierre" becomes "JP").
*/
static bool get_initials(const char *name, char *buf, int buflen)
{
if (!name || !buf)
return false;
while (*name)
{
/* Char's length in bytes */
int clen = mutt_charlen(name, NULL);
if (clen < 1)
return false;
/* Ignore punctuation at the beginning of a word */
if ((clen == 1) && ispunct(*name))
{
name++;
continue;
}
if (clen >= buflen)
return false;
/* Copy one multibyte character */
buflen -= clen;
while (clen--)
*buf++ = *name++;
/* Skip to end-of-word */
for (; *name; name += clen)
{
clen = mutt_charlen(name, NULL);
if (clen < 1)
return false;
else if ((clen == 1) && (isspace(*name) || (*name == '-')))
break;
}
/* Skip any whitespace, or hyphens */
while (*name && (isspace(*name) || (*name == '-')))
name++;
}
*buf = 0;
return true;
}
static char *apply_subject_mods(struct Envelope *env)
{
if (!env)
return NULL;
if (!SubjectRxList)
return env->subject;
if (env->subject == NULL || *env->subject == '\0')
return env->disp_subj = NULL;
env->disp_subj = mutt_apply_replace(NULL, 0, env->subject, SubjectRxList);
return env->disp_subj;
}
/**
* hdr_format_str - Format a string, like printf()
*
* | Expando | Description
* |:--------|:-----------------------------------------------------------------
* | \%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, or else the folder name (%b).
* | \%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 | message labels (e.g. notmuch tags)
* | \%i | message-id
* | \%I | initials of author
* | \%K | the list to which the letter was sent (if any; otherwise: empty)
* | \%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
* | \%q | newsgroup name (if compiled with NNTP support)
* | \%r | comma separated list of To: recipients
* | \%R | comma separated list of Cc: recipients
* | \%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 | `x-comment-to:' field (if present and compiled with NNTP support)
* | \%X | number of MIME attachments
* | \%y | `x-label:' field (if present)
* | \%Y | `x-label:' field (if present, tree unfolded, and != parent's x-label)
* | \%zs | message status flags
* | \%zc | message crypto flags
* | \%zt | message tag flags
* | \%Z | combined message flags
*/
static const char *hdr_format_str(char *dest, size_t destlen, size_t col, int cols,
char op, const char *src, const char *prefix,
const char *ifstring, const char *elsestring,
unsigned long data, enum FormatFlag flags)
{
struct HdrFormatInfo *hfi = (struct HdrFormatInfo *) data;
struct Header *hdr = NULL, *htmp = NULL;
struct Context *ctx = NULL;
char fmt[SHORT_STRING], buf2[LONG_STRING], *p = NULL;
char *wch = NULL;
int do_locales, i;
int optional = (flags & MUTT_FORMAT_OPTIONAL);
int threads = ((Sort & SORT_MASK) == SORT_THREADS);
int is_index = (flags & MUTT_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;
size_t colorlen;
hdr = hfi->hdr;
ctx = hfi->ctx;
if (!hdr || !hdr->env)
return src;
dest[0] = 0;
switch (op)
{
case 'A':
case 'I':
if (op == 'A')
{
if (hdr->env->reply_to && hdr->env->reply_to->mailbox)
{
colorlen = add_index_color(dest, destlen, flags, MT_COLOR_INDEX_AUTHOR);
mutt_format_s(dest + colorlen, destlen - colorlen, prefix,
mutt_addr_for_display(hdr->env->reply_to));
add_index_color(dest + colorlen, destlen - colorlen, flags, MT_COLOR_INDEX);
break;
}
}
else
{
if (get_initials(mutt_get_name(hdr->env->from), buf2, sizeof(buf2)))
{
colorlen = add_index_color(dest, destlen, flags, MT_COLOR_INDEX_AUTHOR);
mutt_format_s(dest + colorlen, destlen - colorlen, prefix, buf2);
add_index_color(dest + colorlen, destlen - colorlen, flags, MT_COLOR_INDEX);
break;
}
}
/* fall through on failure */
case 'a':
colorlen = add_index_color(dest, destlen, flags, MT_COLOR_INDEX_AUTHOR);
if (hdr->env->from && hdr->env->from->mailbox)
mutt_format_s(dest + colorlen, destlen - colorlen, prefix,
mutt_addr_for_display(hdr->env->from));
else
mutt_format_s(dest + colorlen, destlen - colorlen, prefix, "");
add_index_color(dest + colorlen, destlen - colorlen, flags, MT_COLOR_INDEX);
break;
case 'B':
case 'K':
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;
}
if (op == 'K')
{
if (optional)
optional = 0;
/* break if 'K' returns nothing */
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':
colorlen = add_index_color(dest, destlen, flags, MT_COLOR_INDEX_SIZE);
mutt_pretty_size(buf2, sizeof(buf2), (long) hdr->content->length);
mutt_format_s(dest + colorlen, destlen - colorlen, prefix, buf2);
add_index_color(dest + colorlen, destlen - colorlen, flags, MT_COLOR_INDEX);
break;
case 'C':
colorlen = add_index_color(fmt, sizeof(fmt), flags, MT_COLOR_INDEX_NUMBER);
snprintf(fmt + colorlen, sizeof(fmt) - colorlen, "%%%sd", prefix);
add_index_color(fmt + colorlen, sizeof(fmt) - colorlen, flags, MT_COLOR_INDEX);
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 = NULL;
struct tm *tm = NULL;
time_t T;
int j = 0, invert = 0;
if (optional && ((op == '[') || (op == '(')))
{
char *is = NULL;
T = time(NULL);
tm = localtime(&T);
T -= (op == '(') ? hdr->received : hdr->date_sent;
is = (char *) prefix;
if (*is == '>')
{
invert = 1;
is++;
}
while (*is && (*is != '?'))
{
int t = strtol(is, &is, 10);
/* semi-broken (assuming 30 days in all months) */
switch (*(is++))
{
case 'y':
if (t > 1)
{
t--;
t *= (60 * 60 * 24 * 365);
}
t += ((tm->tm_mon * 60 * 60 * 24 * 30) + (tm->tm_mday * 60 * 60 * 24) +
(tm->tm_hour * 60 * 60) + (tm->tm_min * 60) + tm->tm_sec);
break;
case 'm':
if (t > 1)
{
t--;
t *= (60 * 60 * 24 * 30);
}
t += ((tm->tm_mday * 60 * 60 * 24) + (tm->tm_hour * 60 * 60) +
(tm->tm_min * 60) + tm->tm_sec);
break;
case 'w':
if (t > 1)
{
t--;
t *= (60 * 60 * 24 * 7);
}
t += ((tm->tm_wday * 60 * 60 * 24) + (tm->tm_hour * 60 * 60) +
(tm->tm_min * 60) + tm->tm_sec);
break;
case 'd':
if (t > 1)
{
t--;
t *= (60 * 60 * 24);
}
t += ((tm->tm_hour * 60 * 60) + (tm->tm_min * 60) + tm->tm_sec);
break;
case 'H':
if (t > 1)
{
t--;
t *= (60 * 60);
}
t += ((tm->tm_min * 60) + tm->tm_sec);
break;
case 'M':
if (t > 1)
{
t--;
t *= (60);
}
t += (tm->tm_sec);
break;
default:
break;
}
j += t;
}
if (j < 0)
j *= -1;
if (((T > j) || (T < (-1 * j))) ^ invert)
optional = 0;
break;
}
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 (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);
}
if (!do_locales)
setlocale(LC_TIME, "C");
strftime(buf2, sizeof(buf2), dest, tm);
if (!do_locales)
setlocale(LC_TIME, "");
colorlen = add_index_color(dest, destlen, flags, MT_COLOR_INDEX_DATE);
mutt_format_s(dest + colorlen, destlen - colorlen, prefix, buf2);
add_index_color(dest + colorlen, destlen - colorlen, flags, MT_COLOR_INDEX);
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)
{
colorlen = add_index_color(dest, destlen, flags, MT_COLOR_INDEX_AUTHOR);
make_from(hdr->env, buf2, sizeof(buf2), 0);
mutt_format_s(dest + colorlen, destlen - colorlen, prefix, buf2);
add_index_color(dest + colorlen, destlen - colorlen, flags, MT_COLOR_INDEX);
}
else if (mutt_addr_is_user(hdr->env->from))
optional = 0;
break;
#ifdef USE_NOTMUCH
case 'g':
if (!optional)
{
colorlen = add_index_color(dest, destlen, flags, MT_COLOR_INDEX_TAGS);
mutt_format_s(dest + colorlen, destlen - colorlen, prefix,
nm_header_get_tags_transformed(hdr));
add_index_color(dest + colorlen, destlen - colorlen, flags, MT_COLOR_INDEX);
}
else if (!nm_header_get_tags_transformed(hdr))
optional = 0;
break;
case 'G':
{
char *tag_transformed = NULL;
char format[3];
char *tag = NULL;
if (!optional)
{
format[0] = op;
format[1] = *src;
format[2] = 0;
tag = hash_find(TagFormats, format);
if (tag)
{
tag_transformed = nm_header_get_tag_transformed(tag, hdr);
colorlen = add_index_color(dest, destlen, flags, MT_COLOR_INDEX_TAG);
mutt_format_s(dest + colorlen, destlen - colorlen, prefix,
(tag_transformed) ? tag_transformed : "");
add_index_color(dest + colorlen, destlen - colorlen, flags, MT_COLOR_INDEX);
}
src++;
}
else
{
format[0] = op;
format[1] = *prefix;
format[2] = 0;
tag = hash_find(TagFormats, format);
if (tag)
if (nm_header_get_tag_transformed(tag, hdr) == NULL)
optional = 0;
}
break;
}
#endif
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;
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);
colorlen = add_index_color(dest, destlen, flags, MT_COLOR_INDEX_SIZE);
snprintf(dest + colorlen, destlen - colorlen, fmt, (int) hdr->lines);
add_index_color(dest + colorlen, destlen - colorlen, flags, MT_COLOR_INDEX);
}
else if (hdr->lines <= 0)
optional = 0;
break;
case 'L':
if (!optional)
{
colorlen = add_index_color(dest, destlen, flags, MT_COLOR_INDEX_AUTHOR);
make_from(hdr->env, buf2, sizeof(buf2), 1);
mutt_format_s(dest + colorlen, destlen - colorlen, prefix, buf2);
add_index_color(dest + colorlen, destlen - colorlen, flags, MT_COLOR_INDEX);
}
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':
colorlen = add_index_color(dest, destlen, flags, MT_COLOR_INDEX_AUTHOR);
mutt_format_s(dest + colorlen, destlen - colorlen, prefix,
mutt_get_name(hdr->env->from));
add_index_color(dest + colorlen, destlen - colorlen, flags, MT_COLOR_INDEX);
break;
case 'M':
snprintf(fmt, sizeof(fmt), "%%%sd", prefix);
if (!optional)
{
colorlen = add_index_color(dest, destlen, flags, MT_COLOR_INDEX_COLLAPSED);
if (threads && is_index && hdr->collapsed && hdr->num_hidden > 1)
{
snprintf(dest + colorlen, destlen - colorlen, fmt, hdr->num_hidden);
add_index_color(dest, destlen - colorlen, flags, MT_COLOR_INDEX);
}
else if (is_index && threads)
{
mutt_format_s(dest + colorlen, destlen - colorlen, prefix, " ");
add_index_color(dest, destlen - colorlen, flags, MT_COLOR_INDEX);
}
else
*dest = '\0';
}
else
{
if (!(threads && is_index && hdr->collapsed && hdr->num_hidden > 1))
optional = 0;
}
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(OPT_SAVE_ADDRESS) && (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))