mirror of
https://github.com/fish-shell/fish-shell.git
synced 2024-11-25 09:39:52 +08:00
31 lines
491 B
Fish
31 lines
491 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
|