fzf single button data source toggling in bash environment variable but in a variable function execution declatation

[MikeLemo1]

I've found this fzf snippet that allows fzf to toggle between directory and path's querry and I'm basically trying to make it work for pasting command but I assume all or some of the [[,=~,(),>, symbols prevent the script for wotking properly in a variable execution declaration but not sure exacly what needs to be escaped, deleted. changed etc...

Basically I'm trying to make this work, got stuck at the source toggling functionality

export MY_FZF_OPTS="
  --header 'CTRL-T: Switch between Files/Directories'  
  --bind 'ctrl-d:change-prompt(Directories> )+reload(find * -type d)' 
  --bind 'ctrl-f:change-prompt(Files> )+reload(find * -type f)'
  --bind 'ctrl-y:execute-silent(echo -n {1..} | xclip -se c)'
  --bind 'ctrl-t:transform:[[ ! $FZF_PROMPT =~ Files ]] && echo [change-prompt(Files> )+reload(fd --type file --hidden 2>/dev/null)] || 
  echo [change-prompt(Dirs > )+reload(fd --type directory --hidden 2>/dev/null)] 
  --preview '[[ $FZF_PROMPT =~ Files ]] && bat --color=always {} || tree -C {}'
"
myFzf1() {
  READLINE_LINE_NEW="$(fd --type file --hidden 2>/dev/null | FZF_DEFAULT_OPTS="$MY_FZF_OPTS" $(__fzfcmd) )"
  echo "$MY_FZF_OPTS" # For debugging

  if
    [[ -n $READLINE_LINE_NEW ]]
  then
    builtin bind '"\er": redraw-current-line'
    builtin bind '"\e^": magic-space'
    READLINE_LINE=${READLINE_LINE:+${READLINE_LINE:0:READLINE_POINT}}${READLINE_LINE_NEW}${READLINE_LINE:+${READLINE_LINE:READLINE_POINT}}
    READLINE_POINT=$(( READLINE_POINT + ${#READLINE_LINE_NEW} ))
  else
    builtin bind '"\er":'
    builtin bind '"\e^":'
  fi
}

Any idea how to make it work?

[LangLangBart]

echo "$MY_FZF_OPTS" # For debugging

set -x¹² is powerful for debugging as it prints commands and their arguments as they are
executed, allowing you to chip away parts of your code until you find the bug yourself.

---

Basically I'm trying to make this work, got stuck at the source toggling functionality

In your case, you need to escape the $FZF_PROMPT because the surrounding quotes are double quotes.

# example with surrounding double quotes
export MY_FZF_OPTS="
  --preview '[[ \$FZF_PROMPT =~ Files ]] && bat --color=always {} || tree -C {}'
"

# example with surrounding single quotes
export MY_FZF_OPTS='
  --preview "[[ $FZF_PROMPT =~ Files ]] && bat --color=always {} || tree -C {}"
'

Furthermore, your ctrl-t construct seems flawed. The --bind flag opens with a single quote but
does not end with a single quote. For some reason, you are using [ and ] to surround the echo
commands, remove them.

Further the parts following the 'echo' command also need to be quoted and need to be escaped³.

You should also set a default prompt, because of your preview flag.

export MY_FZF_OPTS='
  --ansi
  --header "CTRL-T: Switch between Files/Directories"
  --bind "ctrl-y:execute-silent(echo -n {} | xclip -se c)"
  --bind "ctrl-t:transform:[[ ! $FZF_PROMPT =~ Files ]] &&
    echo \"change-prompt(Files> )+reload(fd --type file --hidden)\" ||
    echo \"change-prompt(Dirs > )+reload(fd --type directory --hidden)\""
  --preview "[[ $FZF_PROMPT =~ Files ]] && bat --color=always {} || tree -C {}"
  --prompt "Files >"
'

Footnotes

1. Bash Reference Manual - Set Builtin ↩

2. bash debugging (wizardzines.com) ↩

3. bash quotes (wizardzines.com) ↩