fish-shell/tests/read.in

#
# Test read builtin and IFS
#

count (echo one\ntwo)
set -l IFS \t
count (echo one\ntwo)
set -l IFS
count (echo one\ntwo)
echo [(echo -n one\ntwo)]
count (echo one\ntwo\n)
echo [(echo -n one\ntwo\n)]
count (echo one\ntwo\n\n)
echo [(echo -n one\ntwo\n\n)]
set -le IFS

function print_vars --no-scope-shadowing
	set -l space
	set -l IFS \n # ensure our command substitution works right
	for var in $argv
		echo -n $space (count $$var) \'$$var\'
		set space ''
	end
	echo
end

echo
echo 'hello there' | read -l one two
print_vars one two
echo 'hello there' | read -l one
print_vars one
echo '' | read -l one
print_vars one
echo '' | read -l one two
print_vars one two
echo 'test' | read -l one two three
print_vars one two three

echo
set -l IFS
echo 'hello' | read -l one
print_vars one
echo 'hello' | read -l one two
print_vars one two
echo 'hello' | read -l one two three
print_vars one two three
echo '' | read -l one
print_vars one
echo 't' | read -l one two
print_vars one two
echo 't' | read -l one two three
print_vars one two three
echo ' t' | read -l one two
print_vars one two
set -le IFS

echo
echo 'hello there' | read -la ary
print_vars ary
echo 'hello' | read -la ary
print_vars ary
echo 'this is a bunch of words' | read -la ary
print_vars ary
echo '   one   two     three' | read -la ary
print_vars ary
echo '' | read -la ary
print_vars ary

echo
set -l IFS
echo 'hello' | read -la ary
print_vars ary
echo 'h' | read -la ary
print_vars ary
echo '' | read -la ary
print_vars ary
set -le IFS

# read -n tests

echo
echo '# read -n tests'
echo 'testing' | read -n 3 foo
echo $foo
echo 'test' | read -n 10 foo
echo $foo
echo 'test' | read -n 0 foo
echo $foo
echo 'testing' | begin; read -n 3 foo; read -n 3 bar; end
echo $foo
echo $bar
echo 'test' | read -n 1 foo
echo $foo