There are no other files named newmail.tty in the archive.
NEWMAIL is a file containing some utility functions to handle new
mail in your mailbox (assuming the ARPAnet TENEX/TOPS20 mailbox
- Using mailfile (if NIL then your login mailbox -- if T
then your connected mailbox) this function determines
if you have new mail. If you don't have new mail then
it returns NIL. Otherwise it returns a list of
"authors" of all your new mail. Authorship is
determined by what follows on the line following the
"From:" in the message. If the global variable
NEWMAILINCLUDESITES is NIL (the default) then
newmailauthors returns a list of atoms corresponding to
"usernames", otherwise it returns a list of lists of
the atoms following the "From:" on the line (e.g.
((Yonke at BBN-TENEXD)...). If the authorship of a
particular message can't be determined, the atom
Unknown is used for that message. Duplicate authors
appear only once (i.e. if you have several messages
from one person, the author will only appear once in
the returned list).
Note: This function tries to be efficient (e.g.
hanging onto file pointers, no extraneous reparsing,
etc.). It works quite well and is very useful if you
keep your mailbox small (less than 100 messages) but if
you habitually keep several hundred messages in your
mailbox, then this function is not for you; see
- A simplier version of newmailauthors which is only the
predicate part of newmailauthors. It just compares the
read and write dates of mailfile (with the same
defaults for mailfile as in newmailauthors) and returns
T or NIL appropriately.
- This function computes the name of the mailbox in the
given directory (or your login mailbox if dirName is
NIL or your connected mailbox if it is T). This is
used in conjuction with the functions newmailauthors
and newmailp, but may be useful elsewhere. It hides
the differences between TENEX and TOPS20 mailboxs.
- If you have a CRT terminal that "blinks", highlights,
etc. (especially if it has windowing facilities) and
want to use the specific terminal features to alert
that new mail has arrived by either of the new mail
functions above, one serious problem arises. After
being alerted via blinking that new mail has arrived
(and possibly who sent it) and assuming you wish to
continue working rather than reading your mail right
away, you don't want the blinking to continue "too
long" and keep disturbing you. This function should be
thought of as a "timer" function especially for the
purpose of not being annoying about new mail; the first
time it is called the timer starts and returns T and
subsequent calls keep returning T until the timer runs
out (with specific checks for "new" new mail in which
case the timer restarts, or the fact that you haven't
done anything at you terminal -- probably out for
coffee or lunch). Note: it assumes you have
determined you have new mail (usually via
newmailauthors or newmailp).
Using the variable MAILFILENAME and the writedate of
you mailbox it determines whether you should still
"blink" a new mail message to your terminal. If
BLINKMAILTIME (a global variable whose value is used as
the number of minutes to "blink"; its initial value is
1) time has passed since the first time you called this
function with new mail and at least one input event has
taken place at your terminal then return NIL, otherwise
return T. Therefore if you are away from your
terminal, this function continues to return T even
though the time has run out.
These functions provide the "guts" for a information package about
new mail. You have to build your own system using them.
Martin D Yonke