In /usr/bin/funtbl line 38:
	    echo "  funcnts -rs ... | funtbl -c \"1 3\" -n 4 -s \"\t\""
                 ^-- SC2028: echo may not expand escape sequences. Use printf.


In /usr/bin/funtbl line 39:
	    echo "  funtbl -c \"1 3\" -n 4 -h -s \"\t\" foo.out"
                 ^-- SC2028: echo may not expand escape sequences. Use printf.


In /usr/bin/funtbl line 80:
cat $FILE |	\
    ^---^ SC2086: Double quote to prevent globbing and word splitting.
    ^---^ SC2002: Useless cat. Consider 'cmd < file | ..' or 'cmd file | ..' instead.

Did you mean: 
cat "$FILE" |	\


In /usr/bin/funtbl line 91:
    XHEAD="'"$XHEAD"'"
                    ^-- SC2016: Expressions don't expand in single quotes, use double quotes for that.

For more information:
  https://www.shellcheck.net/wiki/SC2016 -- Expressions don't expand in singl...
  https://www.shellcheck.net/wiki/SC2028 -- echo may not expand escape sequen...
  https://www.shellcheck.net/wiki/SC2086 -- Double quote to prevent globbing ...