Fix error when testing for admin on PSCore Linux.

[rkeithhill]

This is somewhat experimental but the short-circuiting if statement should cause all existing users of Windows PowerShell (not core) to go through the old code path. Only PS Core users on LInux/OSX will go through the "id -u" path. I have tested this on Ubuntu but I don't have a Mac so can't test there.

Sorry about the whitespace changes. I have VSCode configured to trim trailing whitespace.

[dahlbyk]

Sorry about the whitespace changes. I have VSCode configured to trim trailing whitespace.

No worries. Feel free to use add -p to put whitespace-only changes in separate commits.

[rkeithhill]

@dahlbyk Thanks. Is that git add -p? I haven't used that before, cool. BTW I'm adding a VSCode settings file for the repo so anybody using VSCode will have trailing whitespace trimmed in the files they edit.

[dahlbyk]

Is that git add -p? I haven't used that before, cool.

Yep, many commands (add, reset, checkout, stash at least) accept --patch/-p to let you stage/unstage/discard/stash individual lines (or you can use the e option to apply a change that never existed on disk). I use it all the time.

BTW I'm adding a VSCode settings file for the repo so anybody using VSCode will have trailing whitespace trimmed in the files they edit.

👉 #330