This way you can use something like:

	alias ls='elles -Fo, -trim -w60'

And then use "-ls -w0" to override that when needed.

…able

GNU ls sorts by display width:

	% =ls -1 --sort=width
	d
	€
	zz
	bbb
	cccc
	aaaaa
	'a'$'\n''b'

Maybe that's better? Not sure. But this is easier because we format
stuff after the sort, so we'd have to refactor a bit to make it work
like GNU.

Just because we can't get more information doesn't mean we should skip
the entire file.

Before:

	% elles dir
	elles: lstat dir/link: permission denied
	elles: lstat dir/file: permission denied

	% elles -l dir
	elles: lstat dir/link: permission denied
	elles: lstat dir/file: permission denied

After:

	% elles dir
	file  link
	elles: lstat dir/link: permission denied
	elles: lstat dir/file: permission denied

	% elles dir
	 ??? │ ????-??-?? │ file
	 ??? │ ????-??-?? │ link → ???
	elles: lstat dir/link: permission denied
	elles: lstat dir/file: permission denied

Also run the tests as a regular user for BSD and illumos, rather than
the default of root.

Mostly inspired by https://news.ycombinator.com/item?id=40691108, which
seems like a valid use case.

"Don't show symlink targets" isn't that useful any more now that we have
-trim and -w to control the column sizes.

Fixes #3

Otherwise any text properties that may be set will overflow to the next
line.

Fixes #4

Bug in termtext.Slice() caused the opening escape sequence being lost.

So we don't get spam for this:

	% ./elles -l -BS
	elles: statfs "/run/docker/netns/f49599de79ed": permission denied
	elles: statfs "/run/docker/netns/d482894ce1e1": permission denied

It would also count the padding for the last column, which means that
sometimes it would use fewer columns than can actually fit.

I find this more convenient than using -w to set the width, as that's
kind of a guessing game.