help.c

早期freebsd实现

=	Start this newsgroup, but list subjects before reading articles.\n\
U	Enter this newsgroup by way of the \"Set unread?\" prompt.\n\
u	Unsubscribe from this newsgroup.\n\
",NOMARKING)) )
	    return cmd;
    }
    if ((cmd = print_lines("\
t	Toggle the newsgroup between threaded and unthreaded reading.\n\
c	Catch up (mark all articles as read).\n\
A	Abandon read/unread changes to this newsgroup since you started trn.\n\
n	Go to the next newsgroup with unread news.\n\
N	Go to the next newsgroup.\n\
p	Go to the previous newsgroup with unread news.\n\
P	Go to the previous newsgroup.\n\
",NOMARKING)) ||
    (cmd = print_lines("\
-	Go to the previously displayed newsgroup.\n\
1	Go to the first newsgroup.\n\
^	Go to the first newsgroup with unread news.\n\
$	Go to the last newsgroup.\n\
",NOMARKING)) ||
    (cmd = print_lines("\
g name	Go to the named newsgroup.  Subscribe to new newsgroups this way too.\n\
/pat	Search forward for newsgroup matching pattern.\n\
?pat	Search backward for newsgroup matching pattern.\n\
	(Use * and ? style patterns.  Append r to include read newsgroups.)\n\
",NOMARKING)) ||
    (cmd = print_lines("\
l pat	List unsubscribed newsgroups containing pattern.\n\
m name	Move named newsgroup elsewhere (no name moves current newsgroup).\n\
o pat	Only display newsgroups matching pattern.  Omit pat to unrestrict.\n\
a pat	Like o, but also scans for unsubscribed newsgroups matching pattern.\n\
L	List current .newsrc.\n\
",NOMARKING)) ||
    (cmd = print_lines("\
&	Print current command-line switch settings.\n\
&switch {switch}\n\
	Set (or unset) more command-line switches.\n\
&&	Print current macro definitions.\n\
&&def	Define a new macro.\n\
!cmd	Shell escape.\n\
",NOMARKING)) ||
    (cmd = print_lines("\
q	Quit trn.\n\
x	Quit, restoring .newsrc to its state at startup of trn.\n\
^K	Edit the global KILL file.  Use commands like /pattern/j to suppress\n\
	pattern in every newsgroup.\n\
v	Print version and the address for reporting bugs.\n\
",NOMARKING)) )
	return cmd;
#endif
    if (cmd = get_anything())
	return cmd;
    show_macros();
    return 0;
}

#ifdef ESCSUBS
int
help_subs()
{
    int cmd;
#ifdef SUBSHELP
    doshell(sh,filexp(SUBSHELP));
#else
    page_init();
    if ((cmd = print_lines("\
Valid substitutions are:\n\
",STANDOUT)) ||
    (cmd = print_lines("\
\n\
a	Current article number\n\
A	Full name of current article (%P/%c/%a)\n\
b	Destination of last save command, often a mailbox\n\
B	Bytes to ignore at beginning of last saved article\n\
",NOMARKING)) ||
    (cmd = print_lines("\
c	Current newsgroup, directory form\n\
C	Current newsgroup, dot form\n\
d	Full name of newsgroup directory (%P/%c)\n\
D	Distribution line from current article\n\
e	The last command executed to extract data from an article\n\
E	The last extraction directory\n\
",NOMARKING)) ||
    (cmd = print_lines("\
f	Who the current article is from\n\
F	Newsgroups to followup to (from Newsgroups and Followup-To)\n\
h	(This help message)\n\
H	Host name (yours)\n\
i	Message-I.D. line from current article, with <>\n\
I	Reference indicator mark (see -F switch)\n\
",NOMARKING)) ||
    (cmd = print_lines("\
l	News administrator's login name, if any\n\
L	Login name (yours)\n\
",NOMARKING)) ||
    (cmd = print_lines("\
m	Current mode, first letter of (init,newsgroup,thread,article,pager,\n\
		unread,Add,Catchup,Delete-bogus,Mailbox,Resubscribe)\n\
",NOMARKING)) ||
    (cmd = print_lines("\
M	Number of article marked with M\n\
n	Newsgroups from current article\n\
N	Full name (yours)\n\
o	Organization (yours)\n\
O	Original working directory (where you ran trn from)\n\
",NOMARKING)) ||
    (cmd = print_lines("\
p	Your private news directory (from -d)\n\
P	Public news spool directory\n\
r	Last reference (parent article id)\n\
R	References list for followup article\n\
",NOMARKING)) ||
    (cmd = print_lines("\
s	Subject, with all Re's and (nf)'s stripped off\n\
S	Subject, with one Re stripped off\n\
t	New To line derived from From and Reply-To (Internet format)\n\
T	New To line derived from Path\n\
u	Number of unread articles\n\
",NOMARKING)) ||
    (cmd = print_lines("\
U	Number of unread articles not counting the current article (when\n\
	threads are selected, the count only reflects selected articles)\n\
v	The number of extra (unselected) articles, not counting the current\n\
	one if it is unselected\n\
W	Where thread files are saved\n\
x	News library directory\n\
X	Trn library directory\n\
z	Length of current article in bytes\n\
Z	Number of selected threads\n\
",NOMARKING)) ||
    (cmd = print_lines("\
~	Your home directory\n\
.	Directory containing the \"dot\" files, such as .newsrc\n\
#	A counter in multi-article saves\n\
$	Current process number\n\
/	Last search string\n\
ESC	Run preceding command through % interpretation\n\
",NOMARKING)) ||
    (cmd = print_lines("\
Put ^ in the middle to capitalize the first letter: %^C = Rec.humor\n\
Put _ in the middle to capitalize the last component: %_c = rec/Humor\n\
Put \\ in the middle to quote regexp and % characters in the resulting string\n\
Put :FMT in the middle to format the result printf-style:  %:-30.30t\n\
",NOMARKING)) )
	return cmd;
#endif
    return 0;
}
#endif

int
help_select()
{
    int cmd;

    page_init();
    if ((cmd = print_lines("\
Selection commands:\n\
",STANDOUT)) ||
    (cmd = print_lines("\n\
a-z,0-9	Select/deselect the indicated item by its letter or number.  Many of\n\
	the alpha letters are ommitted for the following commands.\n\
SP	Perform the default command (usually > or Z).\n\
CR	Start reading.  Selects the current item if nothing is selected.\n\
Z,TAB	Start reading.  If nothing is selected, read all unread articles.\n\
.	Toggle the current item's selection.\n\
*	Same as '.' except that it affects all items with the same subject.\n\
",NOMARKING)) ||
    (cmd = print_lines("\
#	Read the current item only, temporarily ignoring all other selections.\n\
k, ','	Mark the current item as killed.\n\
m, \\	Unmark the current item.\n\
-	Set a range, as in d - f.  Repeats the last marking action.\n\
@	Toggle the selection of all visible items.\n\
M	Mark the current item's article(s) as to-return and kill the item.\n\
Y	Yank back and select articles marked to return via M.\n\
",NOMARKING)) ||
    (cmd = print_lines("\
E	Toggle exclusion of non-selected items from the selection list.\n\
n, ]	Move down to the next item (try down-arrow also).\n\
p, [	Move up to the previous item (try up-arrow also).\n\
<, >	Go to previous/next page (try left-/right-arrow also).\n\
^, $	Go to first/last page.\n\
S	Set what the selector displays:  threads, subjects, or articles.\n\
	If the group is unthreaded, choosing threads will thread it.\n\
",NOMARKING)) ||
    (cmd = print_lines("\
=	Toggle between the article and thread/subject selector.\n\
O	Set the selector's order.  A separate default is kept for the\n\
	article and subject/thread selector.\n\
R	Reverse the current sort order.\n\
L	Switch the display between a short style without authors and a\n\
	medium or long style with authors.\n\
U	Switch between selecting unread/read articles.\n\
X	Mark all unselected articles as read and start reading.\n\
",NOMARKING)) ||
    (cmd = print_lines("\
D	Mark unselected articles on the current page as read.  Start\n\
	reading if articles were selected, else go to next page.\n\
J	Junk all selected articles (mark them as read).\n\
c	Catch up -- marks ALL articles as read without chasing xrefs.\n\
A	Add current subject to memorized commands (selection or killing).\n\
T	Add current thread to memorized commands (selection or killing).\n\
^K	Edit local KILL file (the one for this newsgroup).\n\
N	Leave this group as-is and go on to the next one.\n\
",NOMARKING)) ||
    (cmd = print_lines("\
P	Leave this group as-is and go on to the previous one.\n\
:cmd	Perform a command on all the selected articles.\n\
/pattern/modifiers\n\
	Scan all articles for a subject containing pattern.\n\
	(Append f to scan the from line, h to scan whole headers, a to scan\n\
	entire articles, c to make it case-sensitive, r to scan read articles\n\
	(assumed when you are selecting read articles to set unread.)\n\
",NOMARKING)) ||
    (cmd = print_lines("\
/pattern/modifiers:command{:command}\n\
	Apply one or more commands to the set of articles matching pattern.\n\
	Use a K modifier to save entire command to the KILL file for this\n\
	newsgroup.  Commands m and M, if first, imply an r modifier.\n\
 	Valid commands are: e, E, j, m, M, s, S, t, T, !, =, ',' and the\n\
	article/thread (de)selection commands: +/++ (-/--).\n\
",NOMARKING)) ||
    (cmd = print_lines("\
&	View or set command line switches.\n\
&&	View or set macro definitions.\n\
!cmd	Escape to a subshell.\n\
q	Quit the selector.\n\
Q	Quit group and return to news group selection prompt for this group.\n\
",NOMARKING)) )
	return cmd;
    return 0;
}