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Subject: Re: populate next comand line from precmd
From: dana <dana@dana.is>
In-Reply-To: <CAP+y1xB9pAknBm+HLPQVG1yUTP6-rvzbY5L_SQW4i+PBE0-cYw@mail.gmail.com>
Date: Tue, 12 Jun 2018 21:55:52 -0500
Cc: Pier Paolo Grassi <pierpaolog@gmail.com>
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References: <CAP+y1xB9pAknBm+HLPQVG1yUTP6-rvzbY5L_SQW4i+PBE0-cYw@mail.gmail.com>
To: zsh <zsh-users@zsh.org>
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On 12 Jun 2018, at 20:44, Pier Paolo Grassi <pierpaolog@gmail.com> wrote:
>hello, I was wondering if it is somehow possibile to populate the command
>line within the precmd function. What I am trying to achieve is: from a
>normal function (not a zle widget) I would like to set some variable, to be
>read in the precmd function where it is used to populate the next command
>line and also set the cursor position.

Maybe print's -z option would help, at least partially?

  -z  Push the arguments onto the editing buffer stack, separated by spaces.

Example:

  % precmd_insert_args() {
  >   # Check some variable, whatever
  >   [[ $history[$((HISTCMD - 1))] == *bar* ]] && {
  >     print 'Saw bar'
  >     print -z : inserted args ''
  >   }
  >   return 0
  > }
  % precmd_functions+=( precmd_insert_args )
  % : foo # Condition not met
  % : bar
  Saw bar
  % : inserted args <CURSOR HERE>

I say 'partially' because i'm not sure if you can affect the cursor position
(besides inserting things in front of it, obv) from outside of a widget.

dana