~/.bin/l: Overcomplicate (and view executables)

If the first arg is not a directory or a file, see if we can find it
using `which` and view that file.  E.g. `l l` shows the source code of
`l` itself.

This makes the code much more complicated than before, but I do this so
often, so maybe I'll use it.

.bin/l

# ls or less anything in your filesystem (depending on what it is).
if [ -d $1 ]; then
	ls --group-directories-first --color=auto $1
elif [ -f $1 ]; then
	less $1
if [ -d "$1" ]; then
	ls --group-directories-first --color=auto "$1"
elif [ -f "$1" ]; then
	less "$1"
elif which "$1" &> /dev/null; then
	less `which $1`
else
	ls --group-directories-first --color=auto $*
fi