Re: [9fans] Double Your input with cons

["Russ Cox" <rsc@plan9.bell-labs.com>]

I can't explain the doubling behavior.

  Also when I 1,2 cut and leave an empty line, it still executes
  what was on the line.  If I do an ls, cut the ls, and return,
  I get the listing anyway.  

This is happening because while rc in a rio window is 
reading from the terminal in line-at-a-time mode
(so you can edit the line before hitting enter),
con by default reads in raw character-at-a-time mode.
Once you type the ls, the other side has those characters,
and there's no way (short of typing backspace) to get 
them back.

This is analogous to having typed
	for (i in *)
and hit enter at a rio prompt.  You're still in the
middle of input, you can edit the current line all you
want, but the previous line, although still part of
the logical unit, has been digested by rc and editing
it will not change what it was to rc.

It sounds like what you want is con -C, which sends
input a line at a time and turns on local echo.  (You'll
have to "stty -echo" on the Unix side or you'll go nuts.)

Russ