tree f32bc5120cb44a4649b9c0d6299989150cadc45d
parent 7d3f322e64ea1d51a465d2cac1ba2905977bdc49
author Elliott Hughes <enh@google.com> 1636071538 -0700
committer Elliott Hughes <enh@google.com> 1636072175 -0700

Add the missing '--' to shell invocations.

This came up with POSIX recently. Doesn't seem like it matters since
everyone's had this wrong for 40 years, but "meh" --- it's a trivial
fix, and it's strictly correct even if nobody needs this, so let's just
do it...

(Geoff Clare pointed out that my app compat concern "what if someone's
relying on this bug to pass flags to the shell?" isn't relevant because
while you can indeed do that, you then can't pass a command!)

Bug: https://austingroupbugs.net/view.php?id=1440
Test: treehugger
Change-Id: I64f6440da55e2dc29d0136ee62007197d2f00d46