bug#76743: BUGGY "cut" and "printf" with func arg $@

[G.K.]

HI THERE 


any bash code to described the buggy form 

attachment pic displayed standardout 


https://www.facebook.com/100013673347475/posts/2029907180808374

I'AM USED TERMUX , ANDROID 11 ON FON GS4




#1
echo -e "1\n2\n3\n4"'' | tac | cut -zf-4 

WILL NOT DISPLAYED 1LINE
🤔
to any command "cut" will this not



#2
#.sh
#$ . hashmark 1 2

fname(){
         declare local IFS='#'
         echo "var IFS local #1 $1 $2 , \$# $# , \$* $* , \$@ $@"
         }

fname $1 $2
echo
printf "%s%s%s%s%s%s%s%s\n"'var IFS global #2 '"$1 $2"' , $# '"$#"' , $* '"$*"' 
, $@ '"$@"
echo
printf "\n%s%s"\$@ $@
echo
printf '$@'"%s"$@
echo
printf "%s%s"'$@ '$@
echo
printf "%s" $@
echo
printf "%s"$@
echo
printf "%s %s" "\$@" " $@ "
echo

WILL NOT CORRECT DISPLAYED "$@" 
THE DIFFERENCE JUMPED IN LINES  FROM "$@" 
😋