fish-shell/tests/checks/cmdsub.fish
Johannes Altmanninger 0ab6735450 Support $(cmd) command substitution as alternative to (cmd)
For consistency with "$(cmd)" and with other shells.
2021-07-13 21:33:42 +02:00

47 lines
1,002 B
Fish

#RUN: %fish %s
echo $(echo 1\n2)
# CHECK: 1 2
# Command substitution inside double quotes strips trailing newline.
echo "a$(echo b)c"
# CHECK: abc
# Nesting
echo "$(echo "$(echo a)")"
# CHECK: a
echo "$(echo $(echo b))"
# CHECK: b
echo "$(echo multiple).$(echo command).$(echo substitutions)"
# CHECK: multiple.command.substitutions
test -n "$()" || echo "empty list is interpolated to empty string"
# CHECK: empty list is interpolated to empty string
# Variables in command substitution output are not expanded.
echo "$(echo \~ \$HOME)"
# CHECK: ~ $HOME
echo "$(printf %s 'quoted command substitution multiline output
line 2
line 3
')"
# CHECK: quoted command substitution multiline output
# CHECK: line 2
# CHECK: line 3
echo trim any newlines "$(echo \n\n\n)" after cmdsub
#CHECK: trim any newlines after cmdsub
echo i{1, (echo 2), "$(echo 3)"}
# CHECK: i1 i2 i3
echo "$(echo index\nrange\nexpansion)[2]"
#CHECK: range
echo "$(echo '"')"
#CHECK: "
echo "$(echo $(echo 1) ())"
#CHECK: 1