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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 (C) 2019 Pietro Cerutti <[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/>.
*/
/**
* @page neo_hdrline String processing routines to generate the mail index
*
* String processing routines to generate the mail index
*/
#include "config.h"
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "mutt/lib.h"
#include "address/lib.h"
#include "config/lib.h"
#include "email/lib.h"
#include "core/lib.h"
#include "alias/lib.h"
#include "gui/lib.h"
#include "hdrline.h"
#include "attach/lib.h"
#include "color/lib.h"
#include "ncrypt/lib.h"
#include "format_flags.h"
#include "hook.h"
#include "maillist.h"
#include "mutt_thread.h"
#include "muttlib.h"
#include "mx.h"
#include "sort.h"
#include "subjectrx.h"
#ifdef USE_NOTMUCH
#include "notmuch/lib.h"
#endif
/**
* struct HdrFormatInfo - Data passed to index_format_str()
*/
struct HdrFormatInfo
{
struct Mailbox *mailbox; ///< Current Mailbox
int msg_in_pager; ///< Index of Email displayed in the Pager
struct Email *email; ///< Current Email
const char *pager_progress; ///< String representing Pager position through Email
};
/**
* enum FieldType - Header types
*
* Strings for printing headers
*/
enum FieldType
{
DISP_TO, ///< To: string
DISP_CC, ///< Cc: string
DISP_BCC, ///< Bcc: string
DISP_FROM, ///< From: string
DISP_PLAIN, ///< Empty string
DISP_MAX,
};
/**
* add_index_color - Insert a color marker into a string
* @param buf Buffer to store marker
* @param buflen Buffer length
* @param flags Flags, see #MuttFormatFlags
* @param color Color, e.g. #MT_COLOR_MESSAGE
* @retval num Characters written
*
* The colors are stored as "magic" strings embedded in the text.
*/
static size_t add_index_color(char *buf, size_t buflen, MuttFormatFlags flags, enum ColorId color)
{
/* 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 */
const size_t len = mutt_str_len(buf);
buf += len;
buflen -= len;
}
if (buflen <= 2)
return 0;
buf[0] = MUTT_SPECIAL_INDEX;
buf[1] = color;
buf[2] = '\0';
return 2;
}
/**
* make_from_prefix - Create a prefix for an author field
* @param disp Type of field
* @retval ptr 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_MAX] = {
[DISP_TO] = "To ", [DISP_CC] = "Cc ", [DISP_BCC] = "Bcc ",
[DISP_FROM] = "", [DISP_PLAIN] = "",
};
const struct MbTable *c_from_chars = cs_subset_mbtable(NeoMutt->sub, "from_chars");
if (!c_from_chars || !c_from_chars->chars || (c_from_chars->len == 0))
return long_prefixes[disp];
const char *pchar = mbtable_get_nth_wchar(c_from_chars, disp);
if (mutt_str_len(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 buflen Size of the buffer
* @param do_lists Should we check for mailing lists?
* @param flags Format flags, see #MuttFormatFlags
*
* 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 buflen,
bool do_lists, MuttFormatFlags flags)
{
if (!env || !buf)
return;
bool me;
enum FieldType disp;
struct AddressList *name = NULL;
me = mutt_addr_is_user(TAILQ_FIRST(&env->from));
if (do_lists || me)
{
if (check_for_mailing_list(&env->to, make_from_prefix(DISP_TO), buf, buflen))
return;
if (check_for_mailing_list(&env->cc, make_from_prefix(DISP_CC), buf, buflen))
return;
}
if (me && !TAILQ_EMPTY(&env->to))
{
disp = (flags & MUTT_FORMAT_PLAIN) ? DISP_PLAIN : DISP_TO;
name = &env->to;
}
else if (me && !TAILQ_EMPTY(&env->cc))
{
disp = DISP_CC;
name = &env->cc;
}
else if (me && !TAILQ_EMPTY(&env->bcc))
{
disp = DISP_BCC;
name = &env->bcc;
}
else if (!TAILQ_EMPTY(&env->from))
{
disp = DISP_FROM;
name = &env->from;
}
else
{
*buf = '\0';
return;
}
snprintf(buf, buflen, "%s%s", make_from_prefix(disp), mutt_get_name(TAILQ_FIRST(name)));
}
/**
* make_from_addr - Create a 'from' address for a reply email
* @param env Envelope of current email
* @param buf Buffer for the result
* @param buflen Length of buffer
* @param do_lists If true, check for mailing lists
*/
static void make_from_addr(struct Envelope *env, char *buf, size_t buflen, bool do_lists)
{
if (!env || !buf)
return;
bool me = mutt_addr_is_user(TAILQ_FIRST(&env->from));
if (do_lists || me)
{
if (check_for_mailing_list_addr(&env->to, buf, buflen))
return;
if (check_for_mailing_list_addr(&env->cc, buf, buflen))
return;
}
if (me && !TAILQ_EMPTY(&env->to))
snprintf(buf, buflen, "%s", buf_string(TAILQ_FIRST(&env->to)->mailbox));
else if (me && !TAILQ_EMPTY(&env->cc))
snprintf(buf, buflen, "%s", buf_string(TAILQ_FIRST(&env->cc)->mailbox));
else if (!TAILQ_EMPTY(&env->from))
mutt_str_copy(buf, buf_string(TAILQ_FIRST(&env->from)->mailbox), buflen);
else
*buf = '\0';
}
/**
* user_in_addr - Do any of the addresses refer to the user?
* @param al AddressList
* @retval true Any of the addresses match one of the user's addresses
*/
static bool user_in_addr(struct AddressList *al)
{
struct Address *a = NULL;
TAILQ_FOREACH(a, al, entries)
if (mutt_addr_is_user(a))
return true;
return false;
}
/**
* user_is_recipient - Is the user a recipient of the message
* @param e Email to test
* @retval enum Character index into the `$to_chars` config variable
*/
static enum ToChars user_is_recipient(struct Email *e)
{
if (!e || !e->env)
return FLAG_CHAR_TO_NOT_IN_THE_LIST;
struct Envelope *env = e->env;
if (!e->recip_valid)
{
e->recip_valid = true;
if (mutt_addr_is_user(TAILQ_FIRST(&env->from)))
{
e->recipient = FLAG_CHAR_TO_ORIGINATOR;
}
else if (user_in_addr(&env->to))
{
if (TAILQ_NEXT(TAILQ_FIRST(&env->to), entries) || !TAILQ_EMPTY(&env->cc))
e->recipient = FLAG_CHAR_TO_TO; /* non-unique recipient */
else
e->recipient = FLAG_CHAR_TO_UNIQUE; /* unique recipient */
}
else if (user_in_addr(&env->cc))
{
e->recipient = FLAG_CHAR_TO_CC;
}
else if (check_for_mailing_list(&env->to, NULL, NULL, 0))
{
e->recipient = FLAG_CHAR_TO_SUBSCRIBED_LIST;
}
else if (check_for_mailing_list(&env->cc, NULL, NULL, 0))
{
e->recipient = FLAG_CHAR_TO_SUBSCRIBED_LIST;
}
else if (user_in_addr(&env->reply_to))
{
e->recipient = FLAG_CHAR_TO_REPLY_TO;
}
else
{
e->recipient = FLAG_CHAR_TO_NOT_IN_THE_LIST;
}
}
return e->recipient;
}
/**
* thread_is_new - Does the email thread contain any new emails?
* @param e Email
* @retval true Thread contains new mail
*/
static bool thread_is_new(struct Email *e)
{
return e->collapsed && (e->num_hidden > 1) && (mutt_thread_contains_unread(e) == 1);
}
/**
* thread_is_old - Does the email thread contain any unread emails?
* @param e Email
* @retval true Thread contains unread mail
*/
static bool thread_is_old(struct Email *e)
{
return e->collapsed && (e->num_hidden > 1) && (mutt_thread_contains_unread(e) == 2);
}
/**
* index_format_str - Format a string for the index list - Implements ::format_t - @ingroup expando_api
*
* | Expando | Description
* | :------ | :----------------------------------------------------------------
* | \%a | Address of the author
* | \%A | Reply-to address (if present; otherwise: address of author)
* | \%b | Filename of the original message folder (think mailbox)
* | \%B | The list to which the email was sent, or else the folder name (%b)
* | \%C | Current message number
* | \%c | Number of characters (bytes) in the body of the message
* | \%cr | Number of characters (bytes) in the message, including header
* | \%D | Date and time of message using `$date_format` and local timezone
* | \%d | Date and time of message using `$date_format` and sender's timezone
* | \%e | Current message number in thread
* | \%E | Number of messages in current thread
* | \%Fp | Like %F, but plain. No contextual formatting is applied to recipient name
* | \%F | Author name, or recipient name if the message is from you
* | \%f | Sender (address + real name), either From: or Return-Path:
* | \%Gx | Individual message tag (e.g. notmuch tags/imap flags)
* | \%g | Message tags (e.g. notmuch tags/imap flags)
* | \%H | Spam attribute(s) of this message
* | \%I | Initials of author
* | \%i | Message-id of the current message
* | \%J | Message tags (if present, tree unfolded, and != parent's tags)
* | \%K | The list to which the email was sent (if any; otherwise: empty)
* | \%L | Like %F, except 'lists' are displayed first
* | \%l | Number of lines in the message
* | \%M | Number of hidden messages if the thread is collapsed
* | \%m | Total number of message in the mailbox
* | \%n | Author's real name (or address if missing)
* | \%N | Message score
* | \%O | Like %L, except using address instead of name
* | \%P | Progress indicator for the built-in pager (how much of the file has been displayed)
* | \%q | Newsgroup name (if compiled with NNTP support)
* | \%R | Comma separated list of Cc: recipients
* | \%r | Comma separated list of To: recipients
* | \%S | Single character status of the message (N/O/D/d/!/r/-)
* | \%s | Subject of the message
* | \%t | 'To:' field (recipients)
* | \%T | The appropriate character from the `$to_chars` string
* | \%u | User (login) name of the author
* | \%v | First name of the author, or the recipient if the message is from you
* | \%W | Name of organization of author ('Organization:' field)
* | \%x | 'X-Comment-To:' field (if present and compiled with NNTP support)
* | \%X | Number of MIME attachments
* | \%y | 'X-Label:' field (if present)
* | \%Y | 'X-Label:' field (if present, tree unfolded, and != parent's x-label)
* | \%zc | Message crypto flags
* | \%zs | Message status flags
* | \%zt | Message tag flags
* | \%Z | Combined message flags
* | \%\@name\@ | Insert and evaluate format-string from the matching "$index-format-hook" command
* | \%(fmt) | Date/time when the message was received
* | \%[fmt] | Message date/time converted to the local time zone
* | \%{fmt} | Message date/time converted to sender's time zone
*/
static const char *index_format_str(char *buf, size_t buflen, size_t col, int cols,
char op, const char *src, const char *prec,
const char *if_str, const char *else_str,
intptr_t data, MuttFormatFlags flags)
{
struct HdrFormatInfo *hfi = (struct HdrFormatInfo *) data;
char fmt[128], tmp[1024];
char *p = NULL, *tags = NULL;
bool optional = (flags & MUTT_FORMAT_OPTIONAL);
const bool threads = mutt_using_threads();
int is_index = (flags & MUTT_FORMAT_INDEX);
size_t colorlen;
struct Email *e = hfi->email;
size_t msg_in_pager = hfi->msg_in_pager;
struct Mailbox *m = hfi->mailbox;
if (!e || !e->env)
return src;
const struct Address *reply_to = TAILQ_FIRST(&e->env->reply_to);
const struct Address *from = TAILQ_FIRST(&e->env->from);
const struct Address *to = TAILQ_FIRST(&e->env->to);
const struct Address *cc = TAILQ_FIRST(&e->env->cc);
const struct MbTable *c_crypt_chars = cs_subset_mbtable(NeoMutt->sub, "crypt_chars");
const struct MbTable *c_flag_chars = cs_subset_mbtable(NeoMutt->sub, "flag_chars");
const struct MbTable *c_to_chars = cs_subset_mbtable(NeoMutt->sub, "to_chars");
const char *const c_date_format = cs_subset_string(NeoMutt->sub, "date_format");
buf[0] = '\0';
switch (op)
{
case 'A':
case 'I':
if (op == 'A')
{
if (reply_to && reply_to->mailbox)
{
colorlen = add_index_color(buf, buflen, flags, MT_COLOR_INDEX_AUTHOR);
mutt_format_s(buf + colorlen, buflen - colorlen, prec,
mutt_addr_for_display(reply_to));
add_index_color(buf + colorlen, buflen - colorlen, flags, MT_COLOR_INDEX);
break;
}
}
else
{
if (mutt_mb_get_initials(mutt_get_name(from), tmp, sizeof(tmp)))
{
colorlen = add_index_color(buf, buflen, flags, MT_COLOR_INDEX_AUTHOR);
mutt_format_s(buf + colorlen, buflen - colorlen, prec, tmp);
add_index_color(buf + colorlen, buflen - colorlen, flags, MT_COLOR_INDEX);
break;
}
}
/* fallthrough */
case 'a':
colorlen = add_index_color(buf, buflen, flags, MT_COLOR_INDEX_AUTHOR);
if (from && from->mailbox)
{
mutt_format_s(buf + colorlen, buflen - colorlen, prec, mutt_addr_for_display(from));
}
else
{
mutt_format_s(buf + colorlen, buflen - colorlen, prec, "");
}
add_index_color(buf + colorlen, buflen - colorlen, flags, MT_COLOR_INDEX);
break;
case 'B':
case 'K':
if (first_mailing_list(buf, buflen, &e->env->to) ||
first_mailing_list(buf, buflen, &e->env->cc))
{
mutt_str_copy(tmp, buf, sizeof(tmp));
mutt_format_s(buf, buflen, prec, tmp);
}
else if (optional)
{
optional = false;
}
break;
case 'b':
if (m)
{
p = strrchr(mailbox_path(m), '/');
#ifdef USE_NOTMUCH
if (m->type == MUTT_NOTMUCH)
{
char *rel_path = nm_email_get_folder_rel_db(m, e);
if (rel_path)
p = rel_path;
}
#endif
if (p)
mutt_str_copy(buf, p + 1, buflen);
else
mutt_str_copy(buf, mailbox_path(m), buflen);
}
else
{
mutt_str_copy(buf, "(null)", buflen);
}
mutt_str_copy(tmp, buf, sizeof(tmp));
mutt_format_s(buf, buflen, prec, tmp);
break;
case 'c':
colorlen = add_index_color(buf, buflen, flags, MT_COLOR_INDEX_SIZE);
if (src[0] == 'r')
{
mutt_str_pretty_size(tmp, sizeof(tmp), email_size(e));
src++;
}
else
{
mutt_str_pretty_size(tmp, sizeof(tmp), e->body->length);
}
mutt_format_s(buf + colorlen, buflen - colorlen, prec, tmp);
add_index_color(buf + colorlen, buflen - 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", prec);
add_index_color(fmt + colorlen, sizeof(fmt) - colorlen, flags, MT_COLOR_INDEX);
snprintf(buf, buflen, fmt, e->msgno + 1);
break;
case 'd':
case 'D':
case '{':
case '[':
case '(':
case '<':
/* preprocess $date_format to handle %Z */
{
const char *cp = NULL;
time_t now;
int j = 0;
if (optional && ((op == '[') || (op == '(')))
{
now = mutt_date_now();
struct tm tm = mutt_date_localtime(now);
now -= (op == '(') ? e->received : e->date_sent;
char *is = (char *) prec;
bool invert = false;
if (*is == '>')
{
invert = true;
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 (((now > j) || (now < (-1 * j))) ^ invert)
optional = false;
break;
}
p = buf;
cp = ((op == 'd') || (op == 'D')) ? (NONULL(c_date_format)) : src;
bool use_c_locale = false;
if (*cp == '!')
{
use_c_locale = true;
cp++;
}
size_t len = buflen - 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", e->zoccident ? '-' : '+', e->zhours, e->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';
struct tm tm = { 0 };
if ((op == '[') || (op == 'D'))
{
tm = mutt_date_localtime(e->date_sent);
}
else if (op == '(')
{
tm = mutt_date_localtime(e->received);
}
else if (op == '<')
{
tm = mutt_date_localtime(mutt_date_now());
}
else
{
/* restore sender's time zone */
now = e->date_sent;
if (e->zoccident)
now -= (e->zhours * 3600 + e->zminutes * 60);
else
now += (e->zhours * 3600 + e->zminutes * 60);
tm = mutt_date_gmtime(now);
}
if (use_c_locale)
strftime_l(tmp, sizeof(tmp), buf, &tm, NeoMutt->time_c_locale);
else
strftime(tmp, sizeof(tmp), buf, &tm);
colorlen = add_index_color(buf, buflen, flags, MT_COLOR_INDEX_DATE);
mutt_format_s(buf + colorlen, buflen - colorlen, prec, tmp);
add_index_color(buf + colorlen, buflen - 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", prec);
snprintf(buf, buflen, fmt, mutt_messages_in_thread(m, e, MIT_POSITION));
break;
case 'E':
if (!optional)
{
snprintf(fmt, sizeof(fmt), "%%%sd", prec);
snprintf(buf, buflen, fmt, mutt_messages_in_thread(m, e, MIT_NUM_MESSAGES));
}
else if (mutt_messages_in_thread(m, e, MIT_NUM_MESSAGES) <= 1)
{
optional = false;
}
break;
case 'f':
{
struct Buffer *tmpbuf = buf_pool_get();
mutt_addrlist_write(&e->env->from, tmpbuf, true);
mutt_str_copy(tmp, buf_string(tmpbuf), sizeof(tmp));
buf_pool_release(&tmpbuf);
mutt_format_s(buf, buflen, prec, tmp);
break;
}
case 'F':
if (!optional)
{
const bool is_plain = (src[0] == 'p');
colorlen = add_index_color(buf, buflen, flags, MT_COLOR_INDEX_AUTHOR);
make_from(e->env, tmp, sizeof(tmp), false,
(is_plain ? MUTT_FORMAT_PLAIN : MUTT_FORMAT_NO_FLAGS));
mutt_format_s(buf + colorlen, buflen - colorlen, prec, tmp);
add_index_color(buf + colorlen, buflen - colorlen, flags, MT_COLOR_INDEX);
if (is_plain)
src++;
}
else if (mutt_addr_is_user(from))
{
optional = false;
}
break;
case 'g':
tags = driver_tags_get_transformed(&e->tags);
if (!optional)
{
colorlen = add_index_color(buf, buflen, flags, MT_COLOR_INDEX_TAGS);
mutt_format_s(buf + colorlen, buflen - colorlen, prec, NONULL(tags));
add_index_color(buf + colorlen, buflen - colorlen, flags, MT_COLOR_INDEX);
}
else if (!tags)
{
optional = false;
}
FREE(&tags);
break;
case 'G':
{
char format[3] = { 0 };
char *tag = NULL;
if (!optional)
{
format[0] = op;
format[1] = *src;
format[2] = '\0';
tag = mutt_hash_find(TagFormats, format);
if (tag)
{
tags = driver_tags_get_transformed_for(&e->tags, tag);
colorlen = add_index_color(buf, buflen, flags, MT_COLOR_INDEX_TAG);
mutt_format_s(buf + colorlen, buflen - colorlen, prec, NONULL(tags));
add_index_color(buf + colorlen, buflen - colorlen, flags, MT_COLOR_INDEX);
FREE(&tags);
}
src++;
}
else
{
format[0] = op;
format[1] = *prec;
format[2] = '\0';
tag = mutt_hash_find(TagFormats, format);
if (tag)
{
tags = driver_tags_get_transformed_for(&e->tags, tag);
if (!tags)
optional = false;
FREE(&tags);
}
}
break;
}
case 'H':
/* (Hormel) spam score */
if (optional)
optional = !buf_is_empty(&e->env->spam);
mutt_format_s(buf, buflen, prec, buf_string(&e->env->spam));
break;
case 'i':
mutt_format_s(buf, buflen, prec, e->env->message_id ? e->env->message_id : "<no.id>");
break;
case 'J':
{
bool have_tags = true;
tags = driver_tags_get_transformed(&e->tags);
if (tags)
{
if (flags & MUTT_FORMAT_TREE)
{
char *parent_tags = NULL;
if (e->thread->prev && e->thread->prev->message)
{
parent_tags = driver_tags_get_transformed(&e->thread->prev->message->tags);
}
if (!parent_tags && e->thread->parent && e->thread->parent->message)
{
parent_tags = driver_tags_get_transformed(
&e->thread->parent->message->tags);
}
if (parent_tags && mutt_istr_equal(tags, parent_tags))
have_tags = false;
FREE(&parent_tags);
}
}
else
{
have_tags = false;
}
if (optional)
optional = have_tags;
colorlen = add_index_color(buf, buflen, flags, MT_COLOR_INDEX_TAGS);
if (have_tags)
mutt_format_s(buf + colorlen, buflen - colorlen, prec, tags);
else
mutt_format_s(buf + colorlen, buflen - colorlen, prec, "");
add_index_color(buf + colorlen, buflen - colorlen, flags, MT_COLOR_INDEX);
FREE(&tags);
break;
}
case 'l':
if (!optional)
{
snprintf(fmt, sizeof(fmt), "%%%sd", prec);
colorlen = add_index_color(buf, buflen, flags, MT_COLOR_INDEX_SIZE);
snprintf(buf + colorlen, buflen - colorlen, fmt, e->lines);
add_index_color(buf + colorlen, buflen - colorlen, flags, MT_COLOR_INDEX);
}
else if (e->lines <= 0)
{
optional = false;
}
break;
case 'L':
if (!optional)
{
colorlen = add_index_color(buf, buflen, flags, MT_COLOR_INDEX_AUTHOR);
make_from(e->env, tmp, sizeof(tmp), true, flags);
mutt_format_s(buf + colorlen, buflen - colorlen, prec, tmp);
add_index_color(buf + colorlen, buflen - colorlen, flags, MT_COLOR_INDEX);
}
else if (!check_for_mailing_list(&e->env->to, NULL, NULL, 0) &&
!check_for_mailing_list(&e->env->cc, NULL, NULL, 0))
{
optional = false;
}
break;
case 'm':
if (m)
{
snprintf(fmt, sizeof(fmt), "%%%sd", prec);
snprintf(buf, buflen, fmt, m->msg_count);
}
else
{
mutt_str_copy(buf, "(null)", buflen);
}
break;
case 'n':
colorlen = add_index_color(buf, buflen, flags, MT_COLOR_INDEX_AUTHOR);
mutt_format_s(buf + colorlen, buflen - colorlen, prec, mutt_get_name(from));
add_index_color(buf + colorlen, buflen - colorlen, flags, MT_COLOR_INDEX);
break;
case 'M':
snprintf(fmt, sizeof(fmt), "%%%sd", prec);
if (!optional)
{
colorlen = add_index_color(buf, buflen, flags, MT_COLOR_INDEX_COLLAPSED);
if (threads && is_index && e->collapsed && (e->num_hidden > 1))
{
snprintf(buf + colorlen, buflen - colorlen, fmt, e->num_hidden);
add_index_color(buf, buflen - colorlen, flags, MT_COLOR_INDEX);
}
else if (is_index && threads)
{
mutt_format_s(buf + colorlen, buflen - colorlen, prec, " ");
add_index_color(buf, buflen - colorlen, flags, MT_COLOR_INDEX);
}
else
{
*buf = '\0';
}
}
else
{
if (!(threads && is_index && e->collapsed && (e->num_hidden > 1)))
optional = false;
}
break;
case 'N':
if (!optional)
{
snprintf(fmt, sizeof(fmt), "%%%sd", prec);
snprintf(buf, buflen, fmt, e->score);
}
else
{
if (e->score == 0)
optional = false;
}
break;
case 'O':
if (!optional)
{
make_from_addr(e->env, tmp, sizeof(tmp), true);
const bool c_save_address = cs_subset_bool(NeoMutt->sub, "save_address");
if (!c_save_address && (p = strpbrk(tmp, "%@")))
*p = '\0';
mutt_format_s(buf, buflen, prec, tmp);
}
else if (!check_for_mailing_list_addr(&e->env->to, NULL, 0) &&
!check_for_mailing_list_addr(&e->env->cc, NULL, 0))
{
optional = false;
}
break;
case 'P':
mutt_str_copy(buf, hfi->pager_progress, buflen);
break;
#ifdef USE_NNTP
case 'q':
mutt_format_s(buf, buflen, prec, e->env->newsgroups ? e->env->newsgroups : "");
break;
#endif
case 'r':
{
struct Buffer *tmpbuf = buf_pool_get();
mutt_addrlist_write(&e->env->to, tmpbuf, true);
mutt_str_copy(tmp, buf_string(tmpbuf), sizeof(tmp));
buf_pool_release(&tmpbuf);
if (optional && (tmp[0] == '\0'))
optional = false;
mutt_format_s(buf, buflen, prec, tmp);
break;
}