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# localization: skip(uses-apropos)
# If seq is not installed, then define a function that invokes __fish_fallback_seq
# We can't call type here because that also calls seq
if command -sq seq
exit
end
if command -sq gseq
# No seq provided by the OS, but GNU coreutils was apparently installed, fantastic
function seq
gseq $argv
end
exit
end
# No seq command
function seq
__fish_fallback_seq $argv
end
function __fish_fallback_seq
set -l from 1
set -l step 1
set -l to 1
# Remove a "--" argument if it happens first.
if test "x$argv[1]" = x--
set -e argv[1]
end
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 "seq: Expected 1, 2 or 3 arguments, got %d\n" (count $argv) >&2
return 1
end
for i in $from $step $to
if not string match -rq -- '^-?[0-9]*([0-9]*|\.[0-9]+)$' $i
printf "seq: '%s' is not a number\n" $i >&2
return 1
end
end
if test $step -ge 0
set -l i $from
while test $i -le $to
echo $i
set i (math -- $i + $step)
end
else
set -l i $from
while test $i -ge $to
echo $i
set i (math -- $i + $step)
end
end
end
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