use when they have data from the network. Replaces the utterly daft
inbuf / inbuf_head / term_out() interface, which only made sense
when feeding to terminal.c. (terminal.c now implements
from_backend() as a small function that gateways to the old
interface.)
As a side effect, from_backend() also has an `is_stderr' parameter,
so scp can once again separate the server's pronouncements on stderr
from the actual protocol progress on stdout.
[originally from svn r729]
- ^E answerback is now `PuTTY'.
- The framework is now in place for the scrollback to reset to
bottom on display _or_ keyboard events _or_ both. An actual
configurable option isn't yet present, but most of the code is in
place.
- Try to deal with the problems where incoming data gets dropped
after decoding but before display.
- Scrollback behaviour has changed: instead of keying it off
`scroll' versus `delete top line', things now go into the
scrollback from _either_ of those but only if the primary screen
is selected. Should fix problems with `less' and talkers.
- must_update variable has gone because rdb correctly observed that
it didn't seem to be doing a great deal :-)
[originally from svn r328]
