#!/bin/bash

function parse() {
  version=$1

  read -r
  while [ -z "`echo $REPLY | grep -e "^#\+ $version"`" ]
  do
      read -r
  done

  read -r
  while [ -z "`echo $REPLY | grep -e "^#\+"`" ]
  do
      echo "$REPLY"
      read -r
  done
}

version=$1
file=$2

if [ -n "$file" ]; then
  parse $version < "$file"
else
  parse $version
fi