Script to serve Tmux `copy-pipe` input

.tmux-in.rb

#!/usr/bin/env ruby

type = ARGV.shift

# Support both ARGV (normal argument) and ARGF (tmux copy-pipe)
arg = ARGV.any? ? ARGV.join(' ') : ARGF.read


case type

when 'ag'
  q = Regexp.escape(arg)
    .gsub('"', '\"')
    .gsub(/!/, '\!')

  %x(tmux new-window -a -c "\#{pane_current_path}" -n ag)
  %x(sleep 0.2 && tmux send-keys -l 'ag "#{q}"' && tmux send-keys Enter)

when 'gitdiffall'
  case arg
  when /\A-{1,2}/, /\w{7}/
    %x(tmux new-window -a -c "\#{pane_current_path}" -n ⎇)
    if arg[0] == '-'
      %x(sleep 0.2 && tmux send-keys -l 'gitdiffall #{arg}' && tmux send-keys Enter)
    elsif arg =~ /\A\w*\z/
      %x(sleep 0.2 && tmux send-keys -l 'gitdiffall @#{arg[0, 7]}' && tmux send-keys Enter)
    else
      %x(sleep 0.2 && tmux send-keys -l 'gitdiffall #{arg}' && tmux send-keys Enter)
    end
  else
    %x(tmux display-message 'Invalid argument.')
  end

when 'cd'
  q = arg.chomp.sub(/\A~(?=\/)/, ENV['HOME'])
  q = File.dirname(q) unless File.directory?(q)
  if File.directory? q
    %x(tmux new-window -a -c "#{q}" -n "#{File.basename q}")
  else
    %x(tmux display-message 'Invalid directory.')
  end

else
  %x(tmux display-message 'Invalid argument, check tmux config.')
end