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https://github.com/RGBCube/serenity
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9bd81f34a5
Otherwise, a function would, for example, overwrite its parent scope:
```sh
foo(x) { }
x=1
foo 2 # would make x=2 otherwise
```
41 lines
999 B
Bash
41 lines
999 B
Bash
#!/bin/sh
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# Syntax ok?
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fn() { echo $* }
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# Can we invoke that?
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test "$(fn 1)" = 1 || echo cannot invoke "'fn 1'" && exit 1
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test "$(fn 1 2)" = "1 2" || echo cannot invoke "'fn 1 2'" && exit 1
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# With explicit argument names?
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fn(a) { echo $a }
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# Can we invoke that?
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test "$(fn 1)" = 1 || echo cannot invoke "'fn 1'" with explicit names && exit 1
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test "$(fn 1 2)" = 1 || echo cannot invoke "'fn 1 2'" with explicit names and extra arguments && exit 1
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# Can it fail?
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if fn 2>/dev/null {
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echo "'fn'" with an explicit argument is not failing with not enough args
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exit 1
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}
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# $0 in function should be its name
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fn() { echo $0 }
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test "$(fn)" = fn || echo '$0' in function not equal to its name && exit 1
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# Ensure ARGV does not leak from inner frames.
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fn() {
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fn2 1 2 3
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echo $*
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}
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fn2() { }
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test "$(fn foobar)" = "foobar" || echo 'Frames are somehow messed up in nested functions' && exit 1
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fn(xfoo) { }
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xfoo=1
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fn 2
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test $xfoo -eq 1 || echo 'Functions overwrite parent scopes' && exit 1
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