On Mar 20, 2018, at 5:04 PM, Ralph Corderoy
<ralph(_at_)inputplus(_dot_)co(_dot_)uk> wrote:
Hi Steffen,
mail(1) had the `~e' escape and then added a `~v' one, with VISUAL
and EDITOR environment variables echoing the cpp(1) macro names of
the default values. Kurt Shoens,
kurt(_at_)ucbvax(_dot_)Berkeley(_dot_)EDU, is down
as the author in BSD-1-253-gc145e9e0ab5 of
https://github.com/dspinellis/unix-history-repo.
BSD Mail had both of ~v and ~e from the very start. I know of no
known released file which acted otherwise.
But peering at doc/Mail/mail3.nr in BSD-1-3-gfc8c50acc08, so just after
BSD 1 was cut, I see it documents all the tilde escapes and has `~e' but
no `~v'.
https://github.com/dspinellis/unix-history-repo/blob/fc8c50acc0870bf28753d3508770428682e915bb/doc/Mail/mail3.nr
<nitpick>
This is a doc. bug! ~v is mentioned in mail7.nr in the
same fc8c50acc0 "commit". This has April 19, 1979 date.
The same as the 2bsd date on TUHS unix-archives. See my
previous message. ~v was already in!
By the time of BSD-1-54-ge684660a6a2, src/Mail/Mail.help.~ lists both.
https://github.com/dspinellis/unix-history-repo/blob/e684660a6a291c1e4672912bc1b80ffb00934623/src/Mail/Mail.help.%7E
So although the released code had both, I think it's likely that `~e'
was there on its own, and then `~v' added as ex's vi mode came along.
I also noticed that Mail's string option was at one point `EDITOR' for one
and `VISEDITOR' for the other; also suggestive that one came first
rather than both together.
This is in mail7.nr but looking at the sources, it is 'VISUAL'
so I suspect this is another doc. bug (both bugs are also in
doc/Mail/mail{3,7}.nr in the 2bsd dist. on TUHS).
</nitpick>
:-)
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