Re: Calling a zle widget from a function

[Peter Stephenson <pws@xxxxxxx>]

Frank Terbeck wrote:
> So, that means that (no matter if using v4.2 or v4.3) you cannot call
> widgets from the commandline, right?

From the *command line* you can: type Esc x and enter the name of the
widget (or bind it with bindkey).  From something executed as an
ordinary piece of shell code from the command line, and in particular
from a trap, you can't.

> And how would you 'hook' into zle? I don't know what you meant by
> that.

You can redefine any standard widget to get it to execute your own code
as well as its normal function.  This is sometimes done with
accept-line:

  accept-line() {
    my-code
    zle .accept-line
  }
  zle -N accept-line

However, I don't think there's anything you can intercept when zle is
idle.  You can "kick" zle with "zle -I" from outside it to cause it to
redisplay, but as far as I can see that doesn't go through any
user-redefinable widgets.  So that doesn't seem to help either.

There are a limited number of "real" hooks (zle-line-init and
zle-keymap-select), although I called them "special widgets" which
wasn't a particular clever name, but neither of them helps here either.

-- 
Peter Stephenson <pws@xxxxxxx>                  Software Engineer
CSR PLC, Churchill House, Cambridge Business Park, Cowley Road
Cambridge, CB4 0WZ, UK                          Tel: +44 (0)1223 692070


To access the latest news from CSR copy this link into a web browser:  http://www.csr.com/email_sig.php

To get further information regarding CSR, please visit our Investor Relations page at http://ir.csr.com/csr/about/overview