0.45.0

• Added transform action to conditionally perform a series of actions

  # Disallow selecting an empty line
  echo -e "1. Hello\n2. Goodbye\n\n3. Exit" |
    fzf --height '~100%' --reverse --header 'Select one' \
        --bind 'enter:transform:[[ -n {} ]] && echo accept || echo "change-header:Invalid selection"'
  
  # Move cursor past the empty line
  echo -e "1. Hello\n2. Goodbye\n\n3. Exit" |
    fzf --height '~100%' --reverse --header 'Select one' \
        --bind 'enter:transform:[[ -n {} ]] && echo accept || echo "change-header:Invalid selection"' \
        --bind 'focus:transform:[[ -n {} ]] && exit; [[ {fzf:action} =~ up$ ]] && echo up || echo down'
  
  # A single key binding to toggle between modes
  fd --type file |
    fzf --prompt 'Files> ' \
        --header 'CTRL-T: Switch between Files/Directories' \
        --bind 'ctrl-t:transform:[[ ! {fzf:prompt} =~ Files ]] &&
                  echo "change-prompt(Files> )+reload(fd --type file)" ||
                  echo "change-prompt(Directories> )+reload(fd --type directory)"'

• Added placeholder expressions
  • {fzf:action} - The name of the last action performed
  • {fzf:prompt} - Prompt string (including ANSI color codes)
  • {fzf:query} - Synonym for {q}
• Added support for negative height

  # Terminal height minus 1, so you can still see the command line
  fzf --height=-1

  • This handles a terminal resize better than --height=$(($(tput lines) - 1))
• Added accept-or-print-query action that acts like accept but prints the current query when there's no match for the query

  # You can make CTRL-R paste the current query when there's no match
  export FZF_CTRL_R_OPTS='--bind enter:accept-or-print-query'

  • Note that there are alternative ways to implement the same strategy

    # 'become' is apparently more versatile but it's not available on Windows.
    export FZF_CTRL_R_OPTS='--bind "enter:become:if [ -z {} ]; then echo {q}; else echo {}; fi"'
    
    # Using the new 'transform' action
    export FZF_CTRL_R_OPTS='--bind "enter:transform:[ -z {} ] && echo print-query || echo accept"'

• Added show-header and hide-header actions
• Bug fixes