Files
fish-shell/share/functions/seq.fish
Fabian Homborg bd5232e0e2 functions/seq: Fix negative numbers
25d83ed0d7 (included in 3.0.0) added a `string` check that
did not use `--`, so negative numbers were interpreted as options.

Apparently nobody is using this.

(Again, this is for the `seq` fallback used on OpenBSD)
2019-03-07 22:50:17 +01:00

57 lines
1.4 KiB
Fish

# 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 not command -sq seq
# No seq command
function seq --description "Print sequences of numbers"
__fish_fallback_seq $argv
end
function __fish_fallback_seq --description "Fallback implementation of the seq command"
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 $to
if not string match -rq -- '^-?[0-9]*([0-9]*|\.[0-9]+)$' $i
printf (_ "%s: '%s' is not a number\n") seq $i
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
end