When resizing windows, vt would signal ssh by updating
the window size and sending an interrupt. Ssh reacted
by forwarding both the winch and an interrupt.
This change adds a WINCH generation counter so that
ssh can differentiate between resizes and interrupts.
If an interrupt comes in, and the WINCH generation
changes, then the interrupt is taken as signalling a
WINCH.
vt sets several environment variables ($TERM, $COLS, $LINES)
after exiting. This change rforks the environment so that this
detritus doesn't get left behind.
vt chording behaves slightly differently from other
applications: a chord must be fully released before
the next chord can be applied. This makes any change
in chord apply the action.
The previous patch to plumb non-whitespace segments was
confusing due to lack of visual feedback. This removes
the empty selecton plumb behavior, and instead makes
triple clicking work to get a plumbable selection.
- plumbsel()
- remove debug prints
- use smalloc() to convert to bytes
- fix spurious -1 close of plumb fd
- snarfsel()
- fix rune buffer leak in open error case
Ori Bernstein wrote:
> I finally got around to taking another shot at this vt patch. This change
> gets rid of implicit snarfing, and instead makes selection the way you
> select text for snarfing or plumbing. Select, then use a menu entry.
>
> It would probably be nice to have double click to expand the selection,
> rio-style, along with plumbing implicitly taking the current word, but
> that can be a separate patch.
>
> This change also punts on scrolling for simplicity -- it clears the
> selection instead of trying to handle the cases where the selection
> goes offscreen.
little amendments:
- fix line selection (point min/max inversion)
- clear selection when switching linesel/blocksel
- move selection on scroll
we used to bind a pipe to /dev/cons and /dev/consctl with some
shared segment hack to pass tty info arround. now we implement
this as a fileserver.
add support for "winchon"/"winchoff" ctl message to enable interrupt
on window size change. (used by ssh)
keep track of fullscreen scrolls, avoiding redrawing the whole
screen each time.
the event library doesnt do any flow control. if the host
keeps sending data while the user is mousing arround,
extract() will collect the data until memory fills up.
so instead we abandon the event library and convert
the program to use channels.
