bash xterm : how to get command line before typing enter

Question

I try to define a custom behaviour of the backward-kill-word function in bash xterm. For that, I need to catch the command line before validate it. For instances, if I type sdcds/edfdD sdf/sdf without typing enter, I want by using a shortcut like esc + backspace to catch the line sdcds/edfdD sdf/sdf in a temporary variable to apply a sed after. I have already written the sed and the bind command but I cannot find anywhere how to catch the buffer command line.

Update from Answer

Ok thanks a lot, I think I'm not clear enough in my explanation. What I want to do is to create a function and the related bind key in the bash.rc to modify the text in the command line. Imagine, I want to define a function which removes the command line (before typing enter) till "/" for example and only till /, I could write in my .bash.rc :

function backward-delete-to-slash () { echo $BUFFER_COMMAND_LINE | sed 's:(.[/][/]).*:\1:';}

bind -x '"\e\d": backward-delete-to-slash'

My problem is to catch the command line into a $BUFFER_COMMAND_LINE variable. If I had this variable, I could do for instance :

$: sdffs/dsfd dsfsdf/dfdsf (without typing enter)

esc + backspace

$: sdffs/dsfd dsfsdf/

So I hope to be more exhaustive.

Answer 1

If you know vi a bit, try this:

$ set -o vi
$ bind vi-yank-to '\ey'
$ type-your-text-here - then press Home to go to begin-of-line, esc-y

The line is in a buffer now. Press Ctrl-c to get a new line, then

$ sed something-and-then esc-p

The text from the buffer should appear.