dmenu_cliphist

#!/usr/bin/env bash
# https://raw.githubusercontent.com/BreadOnPenguins/scripts/refs/heads/master/dmenu_cliphist

histfile="$HOME/.cache/cliphist"
placeholder="<NEWLINE>"

highlight() {
  xclip -o -selection primary | xclip -i -f -selection clipboard 2>/dev/null
}

output() {
  xclip -i -f -selection clipboard 2>/dev/null
}

write() {
  [ -f "$histfile" ] || notify-send "Creating $histfile"
  touch "$histfile"

  clip=$(xclip -o -selection clipboard 2>/dev/null)
  [ -z "$clip" ] && return

  multiline=$(echo "$clip" | tr '\n' "$placeholder")
  grep -Fxq "$multiline" "$histfile" || echo "$multiline" >>"$histfile"
  notification=$(printf "%q" "$multiline")
}

sel() {
  selection=$(tac "$histfile" | dmenu -b -l 5 -i -p "Clipboard history:")
  if [ -n "$selection" ]; then
    echo "$selection" | tr "$placeholder" '\n' | xclip -i -selection clipboard
    notification="Copied to clipboard!"
  fi
}

case "$1" in
add) highlight && write ;;
out) output && write ;;
sel) sel ;;
*)
  printf "%s | File: %s\n\nadd - copies primary selection to clipboard, and adds to history file\nout - pipe commands to copy output to clipboard, and add to history file\nsel - select from history file with dmenu and recopy!\n" "$0" "$histfile"
  exit 0
  ;;
esac

[ -n "$notification" ] && notify-send -h string:fgcolor:#2e3440 "$notification"