function math --description "Perform math calculations in bc" if count $argv >/dev/null switch $argv[1] case -h --h --he --hel --help __fish_print_help math return 0 end set -lx BC_LINE_LENGTH 0 set -l out (echo $argv | bc) test -z "$out"; and return 1 echo $out switch $out case 0 return 1 end return 0 end return 2 end