Use geany.lua to paste on termbin

gistfile1.txt

In geany tool/plugin manager, enable lua pluggin
create : ~/.config/geany/plugins/geanylua/events/configure.lua
create & edit : ~/.config/geany/plugins/geanylua/termbin.lua with the folowing content:

local ok,msg = geany.launch("/home/eric/.config/geany/plugins/geanylua/totb.sh",geany.filename ())
  if not ok then geany.message(msg) end
  
create & edit & make it executable : ~/.config/geany/plugins/geanylua/totb.sh with the folowing content:

#!/bin/bash
echo $1
firefox `/usr/bin/cat "$1"|nc termbin.com 9999`
echo $RESULT


now you will have tool/luascript/termbin after geany restart