Related #229

fixes #4239

fixes #4410

fixes #3655

fixes #3974

#4735

fixes #4726

fixes #4214

Revert "Mac: Undo, Redo, Select All not working in native dialogs (use roles for those?) (fixes #797)"

This reverts commit f6434628.

A standard Fedora install comes with 2 multiple line environment variables.
Since `env` was previously split by '\n' this would break them, causing
errors in the output pane and in terminals launched through the file
explorer (see #3495).

The original commit didn't work on OSX since `env` does not support the --null
arg. This version can fail if a command line arg's 1+th line looks like an
environment variable. There is no easy way to prevent this since `process.env`
cannot be leveraged. Since the likelyhood of this happening is small, plus the
chance of it causing any significant issue is also small it's a reasonable
compromise for the time being.

Fixes #3928
Fixes #4672

This reverts commit 4cd1c0fc.

Related to #4155

A standard Fedora install comes with 2 multiple line environment variables.
Since `env` was previously split by '\n' this would break them, causing
errors in the output pane and in terminals launched through the file
explorer (see #3495).

Fixes #3928

fixes #4032