What is the proper way to detect shell exit code when errexit option is set?

Question

I prefer to write solid shell code, so the errexit & nounset is always set.

The following code will stop after bad_command.

#!/bin/bash
set -o errexit
set -o nounset
bad_command # stop here
good_command

I want to capture it, here is my method:

#!/bin/bash
set -o errexit
set -o nounset
rc=1
bad_command && rc=0 # stop here
[ $rc -ne 0 ] && do_err_handling
good_command

Is there any better or cleaner method?

My Answer:

#!/bin/bash
set -o errexit
set -o nounset
if ! bad_command ; then
  # error handling here
fi
good_command

Answer 1

How about this? If you want the actual exit code ...

#!/bin/sh                                                                       
set -e

cat /tmp/doesnotexist && rc=$? || rc=$?                                         
echo exitcode: $rc        

cat /dev/null && rc=$? || rc=$?                                                 
echo exitcode: $rc   

Output:

cat: /tmp/doesnotexist: No such file or directory
exitcode: 1
exitcode: 0