Provide a built-in function that performs multi-line replacement

[dakusui]

Provide a built-in function that performs multi-line replacement based on provided regex.

function replace_multilines() {
  local string_before_replacement="${1}"
  local begin_regex="${2}"
  local end_regex="${3}"
  local replacement="${4}"
  ...
  echo "${string_after_replacement}"
}

replace_multilines 'function hi_there() {
  echo "hi there"
}' 'hi_[a-z]+\(\)' '\}' 'hi_there() { echo "HI THERE" }'

Results in

function hi_there() { echo "HI THERE"}