This has nothing to do with Perl. You are using cmd's exit. And there's no reason to believe the shell command exit(1) is valid.

Correct usage: 

>cmd /c "exit 1"

>echo %ERRORLEVEL%
1

[download]

Incorrect usage: 

>cmd /c "exit(1)"

>echo %ERRORLEVEL%
0

[download]

I would have expected "is not recognized" or a syntax error. But whatever. Garbage in, garbage out.

What happens is that exit(1) is treated as equivalent to exit (1), and (1) is numified to zero. 

>perl()
Can't open perl script "()": No such file or directory

[download]

In reply to Re: "exit 1" and "exit(1)" are apparently not the same by ikegami
in thread "exit 1" and "exit(1)" are apparently not the same by syphilis

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