fish-shell/share/functions/isatty.fish
Kurtis Rader 11a60c8374 reformat all fish scripts
I hate doing this but I am tired of touching a fish script as part of
some change and having `make style` radically change it. Which makes
editing fish scripts more painful than it needs to be. It is time to do
a wholesale reformatting of these scripts to conform to the documented
style as implemented by the `fish_indent` program.
2016-11-27 21:27:22 -08:00

31 lines
638 B
Fish

function isatty -d "Tests if a file descriptor is a tty"
set -l fd 0
if count $argv >/dev/null
switch $argv[1]
case -h --h --he --hel --help
__fish_print_help isatty
return 0
case stdin ''
set fd 0
case stdout
set fd 1
case stderr
set fd 2
case '*'
set fd $argv[1]
end
end
# Use `command test` because `builtin test` doesn't open the regular fd's.
# See https://github.com/fish-shell/fish-shell/issues/1228
command test -t "$fd"
end