the 'keys' argument is optional. If no keys are specified (or NULL), then any/
all non-numeric keys are considered valid input and may be returned by this
function/method.

as well as the auxattr "Attach" when either FILEATTACH or MIMEATTACH is set
(requires an updated MsgAttr line in text.dat).

I know... this list of %s's was a bad idea to begin with, but oh well.

after sending via POP3 (the MSG_READ attribute flag is already indicating that).

- votes
- priority
- delivery_attempts

headers).
Don't reference the (currently unused) times_downloaded and last_downloaded
msghdr_t elements/properties.
Set the current node action value *before* calling the scanposts_mod
("Scan Msgs module") in sbbs_t::scanposts().

Expanded codes will not *not* go beyond the terminal column width (minus 1).
If you need the old/wrap behavior, add a "-W" modifier to your @-code.
If a length value is specified with -W, it is ignored.

- MSG_TO, MSG_FROM, MSG_SUBJECT now reflect the header values passed
  to sbbs_t::show_msghdr(), JS bbs.show_msg_header() and not necessarily the
  actual stored (e.g. MIME-encoded) header values.

New codes:
- MSG_CC - reflect a message's CC list, if it has one
- DATETIMEZONE - combines DATETIME and TIMEZONE in one string

used to display a CC list, when applicable.

"read mail" module is executed, so that the node action is correct more often.

show_msghdr(), over-riding the values from the passed smbmsg_t. This is useful
for, say, displaying MIME-decoded values rather than the MIME-encoded versions
of the header fields that you often find in email today.

Copy the upvotes, downvotes, and total_votes to the smbmsg_t, replicating
what is done in sbbs_t::scanposts() - these are used by sbbs_t::show_msghdr()
so we need to copy them if we're going to be replicating that functionality
(showing up/down votes and score) in message headers shown with bbs.show_msg()
and bbs.show_msg_header().

angle brackets in the "RCPT TO" command sent to the SMTP server. This is an old
bug but now appears because we are now (recently) actually storing the SMTP
forward-path in the message header.

settings affect both NetMail and EchoMail import/export.

Renamed MIMEDecodedPlainText to MIMEDecodedPlainTextFmt
(since it is now a printf-style format string).
No special handling of non US-ASCII (e.g. UTF-8) characters... yet.

- mime_version (from the message header, if MIME)
- content_type (from the messgae header, if MIME)
- charset (from the plain-text MIME portion content-type header field)

(when set to Yes).

The default is off (no stripping). Previously, Soft-CRs were always stripped,
but this behavior is now seen as an anachronism as CP437 char 141 is an
important non-English laguage character and used as such in FidoNet msgs.

in switch

nicely when displaying at various terminal widths.

For QuickBBS editors, the default will be the same as previous behavior: to
convert Soft-CRs to Hard-CRs (CRLFs).
For non-QuickBBS editors, the default will be to treat Soft-CRs as any other
valid printable character in the text ("Retain").
A 3rd option is available to strip Soft-CRs completely from the generated
message text.

For QuickBBS editors, the default will be the same as previous behavior: to
convert Soft-CRs to Hard-CRs (CRLFs).
For non-QuickBBS editors, the default will be to treat Soft-CRs as any other
valid printable character in the text ("Retain").
A 3rd option is available to strip Soft-CRs completely from the generated
message text.

when the user is using the internal msg editor (useron_xedit == 0) and
replying to a message.

Refer to the dubious get_msg_body() feature of dot-stuffing as that
("dot-stuffing") and not "rfc822-encoding" - because it isn't.
dot-stuffing is a requirment of SMTP (RFC*821) and NNTP, not RFC822 (oops).

- to_list (RFC822TO, previosuly unavailable via JS)
- cc_list
- replyto_list (RFC822REPLYTO, previously unavailable via JS)

Added RFC822FROM to the "field_list" array (previously unavailable via JS).
Removed SMB_CARBONCOPY from the "field_list" (now duplicated in cc_list).

headers

New text.dat strings:
 - HitYourBackspaceKey
 - CharacterReceivedFmt
 - InvalidBackspaceKeyFmt
 - SwapDeleteKeyQ
 - PetTermDetected

Fix up some message header field lengths.

will be sending 0x7f (DEL) when the backspace key is struck: SWAP_DELETE
For example, xterm sends 0x7f when backspace and hit and an ANSI escape
sequence when the DEL key is hit.

I don't yet have a way to *enable* this setting.

Also, allow the user's setting of NO_EXASCII to take effect even when
auto-terminal type detection is used (yes, the user's terminal can support
ANSI and *not* CP437).

the user's your-scan config (&S using the default shell) even when
"Display subjects only" was confirmed. Previously, when only subjects were
shown, all subs were scanned regardless of user config.
Bug reported by John Hiemenz, thanks!

- DELAY:nn (delay nn 10ths of a second)
- POS:nn (move cursor to position nn, not sure if nn is 0 or 1-based)
- CLREOL (same as CLR2EOL)
- YESCHAR (the character/key for "Yes", from text.dat YNQP string)
- NOCHAR (the character/key for "No', from text.dat YNQP string)

and for good measure:
- QUITCHAR (the character/key for "Quit") - not supported by PCBoard

QOFF - user cannot abort the display of the file
QON - user can abort the display of the file