launch separate Telegram instance from /snap

start-tg-instance.sh

#! /bin/sh
set -e
set -x

ulimit -v 4000000
ulimit -c 2000000

export BAMF_DESKTOP_FILE_HINT=/var/lib/snapd/desktop/applications/telegram-desktop_telegramdesktop.desktop

telegram="/snap/bin/telegram-desktop"

tgid="$(basename $0 .sh)"

if [ -n "$tgid" ]; then
  workdir="$HOME/snap/telegram-desktop/current/.local/share/$tgid"
  if ( ps -ax | grep -v grep | grep 'Telegram' | grep -qF "$workdir" ) ; then
    echo "telegram instance $tgid seems already started"
    exit
  fi
  test -d "$workdir" || mkdir -p "$workdir"
  wd="-workdir $workdir"
else
  if ( ps -ax | grep -v grep | grep -qF Telegram ) ; then
    echo "telegram instance seems already started"
    exit
  fi
fi

echo "start telegram instance $tgid ..."
if [ -z "$*" ]; then
  $telegram -noupdate -many $wd &>/dev/null &
else
  $telegram -noupdate -many $wd $*
fi