define: DUK_OPT_SIGSETJMP
introduced: 1.1.0
removed: 1.5.0
tags:
  - portability
description: >
  Force sigsetjmp/siglongjmp with savesigs == 0 for long control
  transfers (i.e. signal mask not saved/restored).  See comments in
  DUK_OPT_SETJMP.