fzf

# fzf can render preview window before the command completes
fzf --preview 'sleep 1; for i in $(seq 100); do echo $i; sleep 0.01; done'

# Preview window can process ANSI escape sequence (CSI 2 J) for clearing the display
fzf --preview 'for i in $(seq 100000); do
  (( i % 200 == 0 )) && printf "\033[2J"
  echo "$i"
  sleep 0.01
done'

• regular / bold / dim / underline / italic / reverse / blink

  # * Set -1 to keep the original color
  # * Multiple style attributes can be combined
  # * Italic style may not be supported by some terminals
  rg --line-number --no-heading --color=always "" |
    fzf --ansi --prompt "Rg: " \
        --color fg+:italic,hl:underline:-1,hl+:italic:underline:reverse:-1 \
        --color pointer:reverse,prompt:reverse,input:159 \
        --pointer '  '
  

• vertical, top, bottom, left, right
• Updated Vim plugin to use these new --border options

  " Floating popup window in the center of the screen
  let g:fzf_layout = { 'window': { 'width': 0.9, 'height': 0.6 } }
  
  " Popup with 100% width
  let g:fzf_layout = { 'window': { 'width': 1.0, 'height': 0.5, 'border': 'horizontal' } }
  
  " Popup with 100% height
  let g:fzf_layout = { 'window': { 'width': 0.5, 'height': 1.0, 'border': 'vertical' } }
  
  " Similar to 'down' layout, but it uses a popup window and doesn't affect the window layout
  let g:fzf_layout = { 'window': { 'width': 1.0, 'height': 0.5, 'yoffset': 1.0, 'border': 'top' } }
  
  " Opens on the right;
  "   'highlight' option is still supported but it will only take the foreground color of the group
  let g:fzf_layout = { 'window': { 'width': 0.5, 'height': 1.0, 'xoffset': 1.0, 'border': 'left', 'highlight': 'Comment' } }
  

seq 100 | fzf
  # 100/100
seq 100 | fzf --multi
  # 100/100 (0)
seq 100 | fzf --multi 5
  # 100/100 (0/5)