blob: df819925089aac1db5d15670848f20d9969876b7 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
|
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
|