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#!@prefix@/bin/fish
set -l from 1
set -l step 1
set -l to 1
switch (count $argv)
case 1
set to $argv[1]
case 2
set from $argv[1]
set to $argv[2]
case 3
set from $argv[1]
set step $argv[2]
set to $argv[3]
case '*'
printf (_ "%s: Expected 1, 2 or 3 arguments, got %d\n") seq (count $argv)
return 1
end
for i in $from $step $to
if not echo $i | grep '^-\?[0-9]*\(\|.[0-9]\+\)$' >/dev/null
printf (_ "%s: '%s' is not a number\n") seq $i
return 1
end
end
echo "for( i=$from; i<=$to ; i+=$step ) i;" | bc
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