zulu install crash

git clone https://github.com/molovo/crash crash
cp crash/crash /usr/local/share/zsh/site-functions # Or anywhere else in $fpath

autoload -Uz crash && crash register

throw TestException 'This is a test' # Will cause the error handler to be displayed

autoload -Uz crash && crash register

# The function we're going to call
function do_something() {
  echo 'Start to do something...'
  throw RainbowException 'Unicorns!'
  echo 'This message will never be displayed'
}

# A function to handle any caught exceptions
function error_handler() {
  local exception="$1" message="${(@)@:2}"

  echo $exception # RainbowException
  echo $message   # Unicorns!
}

try do_something
catch RainbowException error_handler