junegunn/fzf 0.51.0 on GitHub

Added a new environment variable $FZF_POS exported to the child processes. It's the vertical position of the cursor in the list starting from 1.

# Toggle selection to the top or to the bottom
seq 30 | fzf --multi --bind 'load:pos(10)' \
  --bind 'shift-up:transform:for _ in $(seq $FZF_POS $FZF_MATCH_COUNT); do echo -n +toggle+up; done' \
  --bind 'shift-down:transform:for _ in $(seq 1 $FZF_POS); do echo -n +toggle+down; done'

Added --with-shell option to start child processes with a custom shell command and flags

gem list | fzf --with-shell 'ruby -e' \
  --preview 'pp Gem::Specification.find_by_name({1})' \
  --bind 'ctrl-o:execute-silent:
      spec = Gem::Specification.find_by_name({1})
      [spec.homepage, *spec.metadata.filter { _1.end_with?("uri") }.values].uniq.each do
        system "open", _1
      end
  '

Added change-multi action for dynamically changing --multi option
- change-multi - enable multi-select mode with no limit
- change-multi(NUM) - enable multi-select mode with a limit
- change-multi(0) - disable multi-select mode
Windows improvements
- become action is now supported on Windows
  - Unlike in *nix, this does not use execve(2). Instead it spawns a new process and waits for it to finish, so the exact behavior may differ.
- Fixed argument escaping for Windows cmd.exe. No redundant escaping of backslashes.
Bug fixes and improvements