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|
%test
fn1() { return 1; }
fn2() {
fn1
print $?
return 2
}
fn2
2:Basic status returns from functions
>1
fnz() { }
false
fnz
0:Empty function body resets status
fn3() { return 3; }
fnstat() { print $?; }
fn3
fnstat
0:Status is not reset on non-empty function body
>3
function f$$ () {
print regress expansion of function names
}
f$$
0:Regression test: 'function f$$ () { ... }'
>regress expansion of function names
function foo () print bar
foo
0:Function definition without braces
>bar
functions -M m1
m1() { (( $# )) }
print $(( m1() ))
print $(( m1(1) ))
print $(( m1(1,2) ))
0:User-defined math functions, argument handling
>0
>1
>2
functions -M m2
m2() {
integer sum
local val
for val in $*; do
(( sum += $val ))
done
}
print $(( m2(1) ))
print $(( m2(1,3+3,4**2) ))
0:User-defined math functions, complex argument handling
>1
>23
functions -M m3 1 2
m3() { (( 1 )) }
print zero
(print $(( m3() )))
print one
print $(( m3(1) ))
print two
print $(( m3(1,2) ))
print three
(print $(( m3(1,2,3) )))
1:User-defined math functions, argument checking
>zero
>one
>1
>two
>1
>three
?(eval):4: wrong number of arguments: m3()
?(eval):10: wrong number of arguments: m3(1,2,3)
functions -M m4 0 0 testmathfunc
functions -M m5 0 0 testmathfunc
testmathfunc() {
if [[ $0 = m4 ]]; then
(( 4 ))
else
(( 5 ))
fi
}
print $(( m4() ))
print $(( m5() ))
0:User-defined math functions, multiple interfaces
>4
>5
command_not_found_handler() {
print "Great News! I've handled the command:"
print "$1"
print "with arguments:"
print -l ${argv[2,-1]}
}
ACommandWhichHadBetterNotExistOnTheSystem and some "really useful" args
0:Command not found handler, success
>Great News! I've handled the command:
>ACommandWhichHadBetterNotExistOnTheSystem
>with arguments:
>and
>some
>really useful
>args
# ' deconfuse emacs
command_not_found_handler() {
print "Your command:" >&2
print "$1" >&2
print "has gone down the tubes. Sorry." >&2
return 1
}
ThisCommandDoesNotExistEither
127:Command not found handler, failure
?Your command:
?ThisCommandDoesNotExistEither
?has gone down the tubes. Sorry.
?(eval):7: command not found: ThisCommandDoesNotExistEither
local variable=outside
print "I am $variable"
function {
local variable=inside
print "I am $variable"
}
print "I am $variable"
() {
local variable="inside again"
print "I am $variable"
}
print "I am $variable"
0:Anonymous function scope
>I am outside
>I am inside
>I am outside
>I am inside again
>I am outside
integer i
for (( i = 0; i < 10; i++ )); do function {
case $i in
([13579])
print $i is odd
;|
([2468])
print $i is even
;|
([2357])
print $i is prime
;;
esac
}; done
0:Anonymous function with patterns in loop
>1 is odd
>2 is even
>2 is prime
>3 is odd
>3 is prime
>4 is even
>5 is odd
>5 is prime
>6 is even
>7 is odd
>7 is prime
>8 is even
>9 is odd
echo stuff in file >file.in
function {
sed 's/stuff/rubbish/'
} <file.in >file.out
cat file.out
0:Anonymous function redirection
>rubbish in file
variable="Do be do"
print $variable
function {
print $variable
local variable="Da de da"
print $variable
function {
print $variable
local variable="Dum da dum"
print $variable
}
print $variable
}
print $variable
0:Nested anonymous functions
>Do be do
>Do be do
>Da de da
>Da de da
>Dum da dum
>Da de da
>Do be do
() { print This has arguments $*; } of all sorts; print After the function
function { print More stuff $*; } and why not; print Yet more
0:Anonymous function with arguments
>This has arguments of all sorts
>After the function
>More stuff and why not
>Yet more
fn() {
(){ print Anonymous function 1 $*; } with args
function { print Anonymous function 2 $*; } with more args
print Following bit
}
functions fn
0:Text representation of anonymous function with arguments
>fn () {
> () {
> print Anonymous function 1 $*
> } with args
> () {
> print Anonymous function 2 $*
> } with more args
> print Following bit
>}
%clean
rm -f file.in file.out
|
