[Feature Request]: tmux popup supports adaptive position

[zyf0330]

• I have read through the manual page (man fzf)
• I have the latest version of fzf
• I have searched through the existing issues

Info

The fzf-tab has supported adaptive tmux popup position in this PR Aloxaf/fzf-tab#130.
I hope to see it in the fzf.

[dagadbm]

I was just about to ask this as well :D

This would then make fzf-tab to just use regular fzf with fzf-tmux set by default.

There is also another feature there that automatically resizes the window done by someone else:

Aloxaf/fzf-tab#235

[junegunn]

Interesting idea. fzf-tmux simply passes -y and -x options to tmux display-popup, so all we have to do is to find the right values to put the popup in the desired position. And you can do that without modifying fzf-tmux itself. Here's a PoC function.

fzf-tmux-pos() {
  local pos x y w h l
  pos=(
    $(tmux display-message -p "#{pane_top} #{cursor_y} #{pane_left} #{cursor_x} #{window_height} #{window_width}")
  )
  y=$(( pos[0] + pos[1] ))
  x=$(( pos[2] + pos[3] ))

  w=$(( pos[5] - x ))
  if (( y < pos[4] / 2 )); then
    h=$(( pos[4] - y ))
    y=$((y + h))
    l=reverse
  else
    h=$((y - 1))
    y=0
    l=default
  fi

  fzf-tmux -x $x -y $y -p $w,$h -- --layout=$l "$@"
}