[Bug 264319] sh - mistreatment of -- separator

From: <bugzilla-noreply_at_freebsd.org>
Date: Sat, 28 May 2022 20:28:12 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=264319

            Bug ID: 264319
           Summary: sh - mistreatment of -- separator
           Product: Base System
           Version: 13.1-RELEASE
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: bin
          Assignee: bugs@FreeBSD.org
          Reporter: steffen@sdaoden.eu

Test suite of (devel branch of) my mailer fails on FreeBSD due to sh(1) hm
"mistreating" -- after -c.  See

    From POSIX, Austin Group Tracker, issue #1440
      [1003.1(2016/18)/Issue7+TC2 0001440]: Calling `system("-some-tool")`
fails

    https://austingroupbugs.net/view.php?id=1440

All other tested shells do this right (for long):

  sh -c -- 'echo du'
  du

should echo "du" and not fail like on FreeBSD:

  sh -c -- 'echo du'
  echo du: --: not found

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