^{Related: #3733}

Steps to reproduce

/bin/sh -c "echo 'hi, mom'"
/bin/sh -c 'echo "hi, mom"'

Expected behavior

hi, mom
hi, mom

Actual behavior

hi, mom
hi,

The following literals should be passed through to sh (there's nothing for PowerShell to interpret here):

echo 'hi, mom'
echo "hi, mom"

To a POSIX-like shell, these two commands are equivalent (not generally, but with the given strings).

Unexpectedly, in the case of the 2nd command, 2 arguments are passed ($<n> represents the n-th positional parameter):

$1=[echo hi,]
$2=[mom]

Environment data

PowerShell Core v6.0.0-alpha (v6.0.0-alpha.18) on macOS 10.12.4
PowerShell Core v6.0.0-alpha (v6.0.0-alpha.18) on Ubuntu 16.04.1 LTS