art.c File Reference

#include "tin.h"
#include "tcurses.h"
#include "newsrc.h"
#include "stpwatch.h"

Include dependency graph for art.c:

Go to the source code of this file.

Macros
#define	SortBy(func)   tin_sort(arts, (size_t) top_art, sizeof(struct t_article), func);

Functions
static FILE *	open_art_header (char *groupname, t_artnum art, t_artnum *next)
static FILE *	open_xover_fp (struct t_group *group, const char *mode, t_artnum min, t_artnum max, t_bool local)
static char *	find_nov_file (struct t_group *group, int mode)
static char *	print_date (time_t secs)
static char *	print_from (struct t_group *group, struct t_article *article, int charset)
static int	artnum_comp (t_comptype p1, t_comptype p2)
static int	base_comp (t_comptype p1, t_comptype p2)
static int	date_comp_asc (t_comptype p1, t_comptype p2)
static int	date_comp_desc (t_comptype p1, t_comptype p2)
static int	from_comp_asc (t_comptype p1, t_comptype p2)
static int	from_comp_desc (t_comptype p1, t_comptype p2)
static int	global_look_for_multipart_info (int aindex, MultiPartInfo *setme, char start, char stop, int *offset)
static int	last_date_comp_base_asc (t_comptype p1, t_comptype p2)
static int	last_date_comp_base_desc (t_comptype p1, t_comptype p2)
static int	lines_comp_asc (t_comptype p1, t_comptype p2)
static int	lines_comp_desc (t_comptype p1, t_comptype p2)
static int	read_art_headers (struct t_group *group, int total, t_artnum top)
static int	read_overview (struct t_group *group, t_artnum min, t_artnum max, t_artnum *top, t_bool local, t_bool *rebuild_cache)
static int	score_comp_asc (t_comptype p1, t_comptype p2)
static int	score_comp_desc (t_comptype p1, t_comptype p2)
static int	score_comp_base (t_comptype p1, t_comptype p2)
static int	subj_comp_asc (t_comptype p1, t_comptype p2)
static int	subj_comp_desc (t_comptype p1, t_comptype p2)
static int	valid_artnum (t_artnum art)
static t_artnum	find_first_unread (struct t_group *group)
static t_artnum	setup_hard_base (struct t_group *group)
static t_bool	parse_headers (FILE *fp, struct t_article *h)
static t_compfunc	eval_sort_arts_func (unsigned int sort_art_type)
static time_t	get_last_posting_date (long n)
static void	sort_base (unsigned int sort_threads_type)
static void	thread_by_multipart (void)
static void	thread_by_percentage (unsigned int percentage)
static void	thread_by_subject (void)
static void	write_overview (struct t_group *group)
void	show_art_msg (const char *group)
void	find_base (struct t_group *group)
t_bool	index_group (struct t_group *group)
int	global_get_multipart_info (int aindex, MultiPartInfo *setme)
t_bool	global_look_for_multipart (int aindex, char start, char stop)
int	global_get_multiparts (int aindex, MultiPartInfo **malloc_and_setme_info, t_bool tagging)
void	make_threads (struct t_group *group, t_bool rethread)
void	sort_arts (unsigned int sort_art_type)
void	do_update (t_bool catchup)
void	set_article (struct t_article *art)
int	find_artnum (t_artnum art)

Variables
int	top_art = 0

Macro Definition Documentation

SortBy

#define SortBy

(

func

)

tin_sort(arts, (size_t) top_art, sizeof(struct t_article), func);

Definition at line 58 of file art.c.

Function Documentation

artnum_comp()

static int artnum_comp ( t_comptype  p1, t_comptype  p2  )

static

Definition at line 2837 of file art.c.

References t_article::artnum.

Referenced by eval_sort_arts_func(), and write_overview().

base_comp()

static int base_comp ( t_comptype  p1, t_comptype  p2  )

static

Definition at line 172 of file art.c.

Referenced by setup_hard_base().

date_comp_asc()

static int date_comp_asc ( t_comptype  p1, t_comptype  p2  )

static

Definition at line 2940 of file art.c.

References t_article::date.

Referenced by eval_sort_arts_func().

date_comp_desc()

static int date_comp_desc ( t_comptype  p1, t_comptype  p2  )

static

Definition at line 2964 of file art.c.

References t_article::date.

Referenced by eval_sort_arts_func().

do_update()

void do_update

(

t_bool

catchup

)

Definition at line 2779 of file art.c.

References _, active, art, art_mark(), ART_READ, arts, t_group::bogus, catchup, t_menu::curr, for_each_art, FreeAndNull, index_group(), t_menu::max, my_flush, my_group, my_printf, t_group::name, PLURAL, selmenu, t_group::subscribed, txt_catchup, txt_catchup_update_info, txt_caughtup, txt_group, txt_updated, txt_updating, verbose, and wait_message().

Referenced by update_index_files().

eval_sort_arts_func()

static t_compfunc eval_sort_arts_func ( unsigned int  sort_art_type )

static

Definition at line 1327 of file art.c.

References artnum_comp(), date_comp_asc(), date_comp_desc(), from_comp_asc(), from_comp_desc(), lines_comp_asc(), lines_comp_desc(), score_comp_asc(), score_comp_desc(), SORT_ARTICLES_BY_DATE_ASCEND, SORT_ARTICLES_BY_DATE_DESCEND, SORT_ARTICLES_BY_FROM_ASCEND, SORT_ARTICLES_BY_FROM_DESCEND, SORT_ARTICLES_BY_LINES_ASCEND, SORT_ARTICLES_BY_LINES_DESCEND, SORT_ARTICLES_BY_NOTHING, SORT_ARTICLES_BY_SCORE_ASCEND, SORT_ARTICLES_BY_SCORE_DESCEND, SORT_ARTICLES_BY_SUBJ_ASCEND, SORT_ARTICLES_BY_SUBJ_DESCEND, subj_comp_asc(), and subj_comp_desc().

Referenced by score_comp_base(), and sort_arts().

find_artnum()

int find_artnum

(

t_artnum

art

)

Definition at line 3223 of file art.c.

References art, t_article::artnum, arts, and for_each_art.

Referenced by find_new_pos(), show_page(), and thread_page().

find_base()

void find_base

(

struct t_group *

group

)

Definition at line 123 of file art.c.

References ART_EXPIRED, ART_READ, arts, t_group::attribute, base, debug, DEBUG_FILTER, expand_base(), for_each_art, grpmenu, t_config::kill_level, KILL_NOTHREAD, t_menu::max, max_base, t_attribute::show_only_unread_arts, sort_base(), SORT_THREADS_BY_NOTHING, t_attribute::sort_threads_type, t_article::thread, and tinrc.

Referenced by config_page(), do_auto_select_arts(), group_page(), make_threads(), toggle_read_unread(), and undo_auto_select_arts().

find_first_unread()

static t_artnum find_first_unread ( struct t_group *  group )

static

Definition at line 601 of file art.c.

References end, NBITS, t_group::newsrc, t_newsrc::xbitlen, t_newsrc::xbitmap, and t_newsrc::xmin.

Referenced by index_group(), and setup_hard_base().

find_nov_file()

static char * find_nov_file ( struct t_group *  group, int  mode  )

static

Definition at line 2597 of file art.c.

References buf, t_config::cache_overview_files, FALSE, GROUP_TYPE_MAIL, GROUP_TYPE_NEWS, GROUP_TYPE_SAVE, hash_groupname(), index_maildir, index_newsdir, index_savedir, joinpath(), local_newsgroups_file, make_base_group_path(), my_mkdir(), my_strdup(), my_strncpy(), t_group::name, NEWSGROUPS_FILE, nntp_server, novfilename, novrootdir, PATH_LEN, R_OK, read_news_via_nntp, S_IRWXU, S_ISDIR, snprintf, str_lwr(), tinrc, TRUE, t_group::type, and W_OK.

Referenced by open_xover_fp().

from_comp_asc()

static int from_comp_asc ( t_comptype  p1, t_comptype  p2  )

static

Definition at line 2899 of file art.c.

References t_article::date, t_article::from, and strcasecmp().

Referenced by eval_sort_arts_func().

from_comp_desc()

static int from_comp_desc ( t_comptype  p1, t_comptype  p2  )

static

Definition at line 2915 of file art.c.

References t_article::date, t_article::from, and strcasecmp().

Referenced by eval_sort_arts_func().

get_last_posting_date()

static time_t get_last_posting_date ( long  n )

static

Definition at line 3136 of file art.c.

References arts, t_article::date, and t_article::thread.

Referenced by last_date_comp_base_asc(), and last_date_comp_base_desc().

global_get_multipart_info()

int global_get_multipart_info	(	int	aindex,
		MultiPartInfo *	setme
	)

Definition at line 976 of file art.c.

References global_look_for_multipart_info().

Referenced by global_get_multiparts(), and stat_thread().

global_get_multiparts()

int global_get_multiparts	(	int	aindex,
		MultiPartInfo **	malloc_and_setme_info,
		t_bool	tagging
	)

Definition at line 1089 of file art.c.

References arts, assert, FALSE, global_get_multipart_info(), t_article::multipart_subj, my_malloc, MultiPartInfo::part_number, MultiPartInfo::subject, MultiPartInfo::subject_compare_len, top_art, and MultiPartInfo::total.

Referenced by tag_multipart(), and thread_by_multipart().

global_look_for_multipart()

t_bool global_look_for_multipart	(	int	aindex,
		char	start,
		char	stop
	)

Definition at line 1049 of file art.c.

References arts, FALSE, t_article::multipart_subj, strtol(), and TRUE.

Referenced by tag_multipart(), and thread_by_multipart().

global_look_for_multipart_info()

static int global_look_for_multipart_info ( int  aindex, MultiPartInfo *  setme, char  start, char  stop, int *  offset  )

static

Definition at line 999 of file art.c.

References arts, MultiPartInfo::arts_index, assert, offset, MultiPartInfo::part_number, strtol(), t_article::subject, MultiPartInfo::subject, MultiPartInfo::subject_compare_len, top_art, and MultiPartInfo::total.

Referenced by global_get_multipart_info().

index_group()

t_bool index_group

(

struct t_group *

group

)

Definition at line 396 of file art.c.

References _, t_cmdlineopts::args, ART_EXPIRED, art_mark(), ART_READ, ART_UNTHREADED, arts, t_group::attribute, base, batch_mode, BegStopWatch, build_references(), t_config::cache_overview_files, cArt, clear_message(), cmdline, CMDLINE_GETART_LIMIT, debug, DEBUG_NEWSRC, EndStopWatch, FALSE, filter_articles(), find_first_unread(), for_each_art, free_art_array(), free_msgids(), t_cmdlineopts::getart_limit, t_config::getart_limit, GROUP_TYPE_NEWS, grpmenu, hash_reclaim(), t_article::keep_in_base, make_threads(), t_menu::max, t_group::name, nntp_caps, t_capabilities::over_cmd, parse_unread_arts(), PrintStopWatch, read_art_headers(), read_overview(), setup_hard_base(), show_art_msg(), t_attribute::show_only_unread_arts, signal_context, T_ARTNUM_CONST, t_article::thread, tinrc, top_art, TRUE, t_group::type, valid_artnum(), verbose, wait_message(), write_overview(), and t_group::xmin.

Referenced by check_start_save_any_news(), do_update(), and group_page().

last_date_comp_base_asc()

static int last_date_comp_base_asc ( t_comptype  p1, t_comptype  p2  )

static

Definition at line 3118 of file art.c.

References get_last_posting_date().

Referenced by sort_base().

last_date_comp_base_desc()

static int last_date_comp_base_desc ( t_comptype  p1, t_comptype  p2  )

static

Definition at line 3100 of file art.c.

References get_last_posting_date().

Referenced by sort_base().

lines_comp_asc()

static int lines_comp_asc ( t_comptype  p1, t_comptype  p2  )

static

Definition at line 3030 of file art.c.

References t_article::date, and t_article::line_count.

Referenced by eval_sort_arts_func().

lines_comp_desc()

static int lines_comp_desc ( t_comptype  p1, t_comptype  p2  )

static

Definition at line 3048 of file art.c.

References t_article::date, and t_article::line_count.

Referenced by eval_sort_arts_func().

make_threads()

void make_threads	(	struct t_group *	group,
		t_bool	rethread
	)

Definition at line 1229 of file art.c.

References _, ART_NORMAL, ART_UNTHREADED, t_msgid::article, arts, assert, t_group::attribute, batch_mode, clear_art_ptrs(), cmd_line, collate_subjects(), debug, DEBUG_MISC, DEBUG_REFS, error_message(), find_base(), for_each_art, info_message(), my_flush, my_fprintf, t_article::prev, t_article::refptr, t_attribute::sort_article_type, sort_arts(), T_ARTNUM_PFMT, t_article::thread, t_attribute::thread_articles, t_config::thread_articles, THREAD_BOTH, thread_by_multipart(), thread_by_percentage(), thread_by_reference(), thread_by_subject(), THREAD_MULTI, THREAD_NONE, THREAD_PERC, t_attribute::thread_perc, THREAD_REFS, THREAD_SUBJ, tinrc, txt_threading_arts, and txt_unthreading_arts.

Referenced by config_page(), group_page(), index_group(), show_page(), and thread_page().

open_art_header()

static FILE * open_art_header ( char *  groupname, t_artnum  art, t_artnum *  next  )

static

Definition at line 624 of file art.c.

References art, atoartnum, t_capabilities::broken_listgroup, buf, CURR_GROUP, ERR_NCING, GROUP_TYPE_NEWS, nntp_caps, NNTP_STRLEN, OK_GROUP, OK_HEAD, OK_NOTEXT, read_news_via_nntp, snprintf, T_ARTNUM_PFMT, and TRUE.

Referenced by read_art_headers().

open_xover_fp()

static FILE * open_xover_fp ( struct t_group *  group, const char *  mode, t_artnum  min, t_artnum  max, t_bool  local  )

static

Definition at line 3304 of file art.c.

References _, error_message(), find_nov_file(), GROUP_TYPE_NEWS, MAX, nntp_caps, NNTP_STRLEN, OK_XOVER, t_capabilities::over_cmd, R_OK, snprintf, T_ARTNUM_PFMT, txt_cannot_open, t_group::type, and W_OK.

Referenced by read_overview(), and write_overview().

parse_headers()

static t_bool parse_headers ( FILE *  fp, struct t_article *  h  )

static

Definition at line 1408 of file art.c.

References atoi(), buffer_to_ascii(), convert_to_printable(), t_article::date, debug, DEBUG_FILTER, eat_re(), eat_tab(), FALSE, t_article::from, t_article::gnksa_code, hash_str(), HEADER_LEN, IS_LOCAL_CHARSET, t_article::line_count, t_article::msgid, my_strdup(), my_toupper(), t_article::name, parse_from(), parse_header(), parsedate(), t_article::path, t_article::refs, rfc1522_decode(), t_article::subject, tin_errno, tin_fgets(), TRUE, unfold_header(), and t_article::xref.

Referenced by read_art_headers().

print_date()

static char * print_date ( time_t  secs )

static

Definition at line 3243 of file art.c.

References t_article::date, and snprintf.

Referenced by write_overview().

print_from()

static char * print_from ( struct t_group *  group, struct t_article *  article, int  charset  )

static

Definition at line 3267 of file art.c.

References t_group::attribute, FALSE, t_article::from, t_config::mm_local_charset, my_strdup(), t_article::name, PATH_LEN, t_attribute::post_8bit_header, rfc1522_encode(), snprintf, strpbrk(), tinrc, and unfold_header().

Referenced by write_overview().

read_art_headers()

static int read_art_headers ( struct t_group *  group, int  total, t_artnum  top  )

static

Definition at line 723 of file art.c.

References _, art, ART_EXPIRED, ART_NORMAL, ART_NOTKILLED, ART_UNREAD, ART_UNTHREADED, t_article::artnum, arts, base, buf, cCOLS, t_article::date, debug, DEBUG_FILTER, DEBUG_MISC, errno, error_message(), expand_art(), FALSE, FreeAndNull, get_cwd(), GROUP_TYPE_NEWS, grpmenu, t_article::killed, LEN, make_base_group_path(), t_menu::max, max_art, MIN, MODULO_COUNT_NUM, t_group::name, open_art_header(), parse_headers(), PATH_LEN, t_article::prev, read_news_via_nntp, t_article::selected, set_article(), show_progress(), snprintf, t_group::spooldir, t_article::status, strerror, strwidth(), T_ARTNUM_CONST, T_ARTNUM_PFMT, t_article::tagged, t_article::thread, tin_errno, TIN_FCLOSE, top_art, txt_group, t_group::type, and valid_artnum().

Referenced by index_group().

read_overview()

static int read_overview ( struct t_group *  group, t_artnum  min, t_artnum  max, t_artnum *  top, t_bool  local, t_bool *  rebuild_cache  )

static

Definition at line 1829 of file art.c.

References _, art, t_article::artnum, arts, atoartnum, atoi(), buf, buffer_to_ascii(), CAPABILITIES, cCOLS, cNo, convert_to_printable(), cRedraw, debug, DEBUG_NNTP, eat_re(), eat_tab(), expand_art(), expensive_over_parse, FAKE_NNTP_FP, FALSE, filter_on_path(), fmt_string(), free_art_array(), free_msgids(), FreeIfNeeded, GROUP_TYPE_NEWS, handle_resize(), hash_str(), t_capabilities::hdr, t_capabilities::hdr_cmd, HEADER_LEN, t_capabilities::headers_range, IS_LOCAL_CHARSET, t_capabilities::list_headers, MAX, max_art, MIN, MODULO_COUNT_NUM, my_realloc, my_strdup(), t_group::name, t_overview_fmt::name, name, need_resize, nntp_caps, ofmt, OK_HDR, OK_HEAD, open_xover_fp(), t_capabilities::over_cmd, OVER_T_ERROR, OVER_T_FSTRING, OVER_T_INT, OVER_T_STRING, parse_from(), parse_header(), parsedate(), read_news_via_nntp, read_saved_news, rfc1522_decode(), set_article(), show_progress(), snprintf, strcasecmp(), strncasecmp(), strstr(), strwidth(), T_ARTNUM_CONST, T_ARTNUM_PFMT, tin_errno, TIN_FCLOSE, tin_fgets(), tin_strtok(), top_art, TRUE, txt_cannot_filter_on_path, txt_group, t_capabilities::type, t_group::type, t_overview_fmt::type, verbose, wait_message(), t_group::xmax, and xref_supported.

Referenced by index_group().

score_comp_asc()

static int score_comp_asc ( t_comptype  p1, t_comptype  p2  )

static

Definition at line 2991 of file art.c.

References t_article::date, and t_article::score.

Referenced by eval_sort_arts_func().

score_comp_base()

static int score_comp_base ( t_comptype  p1, t_comptype  p2  )

static

Definition at line 3069 of file art.c.

References arts, CURR_GROUP, eval_sort_arts_func(), get_score_of_thread(), and SORT_THREADS_BY_SCORE_ASCEND.

Referenced by sort_base().

score_comp_desc()

static int score_comp_desc ( t_comptype  p1, t_comptype  p2  )

static

Definition at line 3009 of file art.c.

References t_article::date, and t_article::score.

Referenced by eval_sort_arts_func().

set_article()

void set_article

(

struct t_article *

art

)

Definition at line 3152 of file art.c.

References art, ART_EXPIRED, ART_NORMAL, ART_NOTKILLED, ART_UNREAD, and FALSE.

Referenced by quick_filter_select_posted_art(), read_art_headers(), and read_overview().

setup_hard_base()

static t_artnum setup_hard_base ( struct t_group *  group )

static

Definition at line 207 of file art.c.

References _, t_cmdlineopts::args, art, atoartnum, base, base_comp(), t_capabilities::broken_listgroup, buf, CAPABILITIES, CLOSEDIR, cmdline, CMDLINE_GETART_LIMIT, debug, DEBUG_NNTP, DIR_BUF, error_message(), expand_base(), expand_bitmap(), FALSE, find_first_unread(), t_cmdlineopts::getart_limit, t_config::getart_limit, GROUP_TYPE_NEWS, grpmenu, make_base_group_path(), MAX, t_menu::max, max_base, MIN, t_group::name, nntp_caps, NNTP_STRLEN, OK_GROUP, PATH_LEN, perror_message(), R_OK, read_news_via_nntp, read_saved_news, t_capabilities::reader, snprintf, t_group::spooldir, T_ARTNUM_PFMT, T_ARTNUM_SFMT, tin_errno, tin_fgets(), tin_sort, tinrc, TRUE, txt_cannot_open, txt_not_exist, t_capabilities::type, t_group::type, verbose, t_group::xmax, and t_group::xmin.

Referenced by index_group().

show_art_msg()

void show_art_msg

(

const char *

group

)

Definition at line 110 of file art.c.

References _, cCOLS, strwidth(), txt_group, and wait_message().

Referenced by handle_resize(), and index_group().

sort_arts()

void sort_arts

(

unsigned int

sort_art_type

)

Definition at line 1372 of file art.c.

References eval_sort_arts_func(), and SortBy.

Referenced by make_threads().

sort_base()

static void sort_base ( unsigned int  sort_threads_type )

static

Definition at line 1383 of file art.c.

References base, grpmenu, last_date_comp_base_asc(), last_date_comp_base_desc(), t_menu::max, score_comp_base(), SORT_THREADS_BY_LAST_POSTING_DATE_ASCEND, SORT_THREADS_BY_LAST_POSTING_DATE_DESCEND, SORT_THREADS_BY_SCORE_ASCEND, SORT_THREADS_BY_SCORE_DESCEND, and tin_sort.

Referenced by find_base().

subj_comp_asc()

static int subj_comp_asc ( t_comptype  p1, t_comptype  p2  )

static

Definition at line 2864 of file art.c.

References t_article::date, strcasecmp(), and t_article::subject.

Referenced by eval_sort_arts_func(), and thread_by_percentage().

subj_comp_desc()

static int subj_comp_desc ( t_comptype  p1, t_comptype  p2  )

static

Definition at line 2880 of file art.c.

References t_article::date, strcasecmp(), and t_article::subject.

Referenced by eval_sort_arts_func().

thread_by_multipart()

static void thread_by_multipart ( void  )

static

Definition at line 1165 of file art.c.

References _, arts, MultiPartInfo::arts_index, FALSE, for_each_art, FreeAndNull, global_get_multiparts(), global_look_for_multipart(), IGNORE_ART_THREAD, MODULO_COUNT_NUM, t_article::multipart_subj, t_article::prev, show_progress(), t_article::thread, and top_art.

Referenced by make_threads().

thread_by_percentage()

static void thread_by_percentage ( unsigned int  percentage )

static

Definition at line 904 of file art.c.

References ART_NORMAL, arts, base, for_each_art, t_article::prev, SortBy, subj_comp_asc(), t_article::subject, and t_article::thread.

Referenced by make_threads().

thread_by_subject()

static void thread_by_subject ( void  )

static

Definition at line 851 of file art.c.

References t_hashnode::aptr, ART_NORMAL, t_msgid::article, arts, t_msgid::child, for_each_art, IGNORE_ART_THREAD, t_msgid::parent, t_article::prev, t_article::refptr, t_msgid::sibling, t_article::subject, t_article::thread, and t_msgid::txt.

Referenced by make_threads().

valid_artnum()

static int valid_artnum ( t_artnum  art )

static

Definition at line 3186 of file art.c.

References art, t_article::artnum, arts, forever, t_article::prev, and top_art.

Referenced by index_group(), and read_art_headers().

write_overview()

static void write_overview ( struct t_group *  group )

static

Definition at line 2446 of file art.c.

References _, t_cmdlineopts::args, ART_EXPIRED, t_article::artnum, artnum_comp(), arts, t_group::attribute, batch_mode, BlankIfNull, t_config::cache_overview_files, cmdline, CMDLINE_GETART_LIMIT, t_article::date, FALSE, for_each_art, FreeIfNeeded, t_cmdlineopts::getart_limit, t_config::getart_limit, t_article::line_count, t_config::mm_local_charset, MODULO_COUNT_NUM, t_article::msgid, my_strdup(), t_group::name, no_write, open_xover_fp(), t_article::path, t_attribute::post_8bit_header, print_date(), print_from(), t_article::refs, rfc1522_encode(), S_IRGRP, S_IROTH, S_IRUSR, S_IWUSR, show_progress(), t_attribute::sort_article_type, SORT_ARTICLES_BY_NOTHING, SortBy, strcasecmp(), t_article::subject, T_ARTNUM_CONST, T_ARTNUM_PFMT, t_article::thread, tinrc, top_art, unfold_header(), verbose, wait_message(), t_group::xmin, and t_article::xref.

Referenced by index_group().

Variable Documentation

top_art

int top_art = 0

Definition at line 60 of file art.c.

Referenced by add_msgid(), build_references(), filter_articles(), global_get_multiparts(), global_look_for_multipart_info(), index_group(), read_art_headers(), read_overview(), search_group(), thread_by_multipart(), valid_artnum(), and write_overview().