scripts should exit rather than return
scripts should exit rather than return

some shells are pickier about this.  darwin uses a newer version of sh
that complains about it.  this is the ‘proper’ behavior in either
scenario.

scmbreeze/scm_breeze,ghthor/scm_breeze,ndbroadbent/scm_breeze,scmbreeze/scm_breeze,ndbroadbent/scm_breeze,ghthor/scm_breeze