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set -e / errexit in shell

Problem

Solution in Shell

set +o errexit

my-complex-func
status=$?

other-func
status=$?

set -o errexit

Solution Oil

shopt -u errexit {
  var status = 0 

  my-complex-func
  setvar status = $?

  other-func
  setvar status = $?
}

Style Guide

No:

if myfunc ...             # internal exit codes would be thrown away

if ls | wc -l ;           # first exit code would be thrown away

Yes:

if external-command ...   # e.g. grep
if builtin ...            # e.g. test
if $0 myfunc ...          # $0 pattern

The $0 myfunc pattern wraps the function in an external command.