junegunn/fzf 0.45.0 on GitHub

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