Some interesting results that i wanted to share [Dynamic Stream input to fzf]

[rayiik]

Hey all, So I stumbled across a bash feature that's new, as of 4.0. It is marked as a shell reserved word. What it does is it forks the command following it to the background and populates a 2 element array the first element is stander input to the command in the sub-shell and the second is the standard output. This process is also fully subject to jobspec and manipulation.

#!/bin/bash

__maincommand () {
declare  flavar
echo ${COPROC[0]}
 until [[ "${COPROC[1]}" == TRUE ]];
    do
        echo "$RANDOM"
        done
}
coproc { __maincommand; }
fzf --bind="ctrl-alt-v:execute(echo 'TRUE' &>${COPROC[1]})" \
--bind='ctrl-alt-g:toggle-search' <&${COPROC[0]}

So id love to hear some ideals about what this could be used for (im thinking looping the system feeding selections from a bind command back into fzf, or dynamic interactive rg).