linux - What is the best way to pass a command alias/function without reducing the functionality of said command? -

i have function ll expands this:

function ll ()  {      ls -lh --color "$@" | grep "^d";     ls -lh --color "$@" | grep "^-" | grep -v "~";     ls -lh --color "$@" | grep "^l" } 

what sort listed folder showing directories first, files, links. however, find such approach reduces functionality of ls command, instance if try call ll /bin /tmp, mix of files both folders.

is there general rule of thumb pass command aliases/functions such full functionality of commands not reduced? if there isn't, how can fix ll command retain sorting, full functionality of ls not lost?

please note have bash version 3.2.25(1)-release on system (ls version 5.97), --show-directories-first flag not available me.

edit:

this function ended using, modified ll work without args:

function ll () {   if [ $# -eq 0 ]; set -- .; fi   d;     ls -lh --color "$d"|awk '$1~/^d/{i=0} $1~/^l/{i=1} $1~/^-/{i=2} nf>2{print ofs $0}' | sort -n -k1,1 | cut -d ' ' -f2-   done } 

extending answer of @chepner:

instead of running ls multiple times grep think can combined in single command awk, sort, cut , same output (directories first files , links):

function ll () {      d in "$@";         ls -lh --color "$d"|awk '$1~/^d/{i=0} $1~/^l/{i=1} $1~/^-/{i=2} nf>2{print ofs $0}'|sort -n -k1,1|cut -d ' ' -f2-     done }