Re: [9fans] acme(4) and addr=dot

[David Leimbach <leimy2k@gmail.com>]

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I think you want to create some kind of redirected handle to the ctl file
first, then start a new block in rc.  I believe this is how network
programming in rc can be accomplished in Inferno as well.  Is this not
allowed in p9p?  I've honestly not used the 9p commands too often.

On Fri, Mar 5, 2010 at 7:37 PM, Micah Stetson <micah@stetsonnet.org> wrote:

> I think this may apply to all versions of acme, but I'm running into
> it on p9p.  First, acme(4) claims that a read on a window's addr file
> returns the current address as a pair of character offsets m and n, in
> '#m,#n' format or just '#m' if m and n are equal.  It looks like it
> really returns m and n as two space-padded integer values.
>
> But that's just a documentation bug.  What's really bothering me is
> that I can't seem to get the value of dot.  I've tried this:
>
> % echo -n 'addr=dot' | 9p write acme/70/ctl
> % 9p read acme/70/addr
>          0           0 %
>
> Window 70's dot is somewhere on line 16.  Thinking maybe the ctl file
> had to stay open, I tried this:
>
> % {echo 'addr=dot'; 9p read acme/70/addr >[1=2]} | 9p write acme/70/ctl
>          0           0 %
>
> No help.  Am I doing something wrong?
>
> Micah
>
>

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