[ruby-core:97975] [Ruby master Feature#16791] Shortcut for Process::Status.exitstatus

Issue #16791 has been updated by nobu (Nobuyoshi Nakada).


It is not a good idea to compare `exitstatus` with 0 from the point of portability.
I'd recommend to use `Process::Status#success?`.
Also if the exit code value is not important but succeeded or failed is just needed, `exit $?.success?` would be enough.
Even `exec` works better than `system` & `exit`, unless you need some clean-ups.


----------------------------------------
Feature #16791: Shortcut for Process::Status.exitstatus
https://bugs.ruby-lang.org/issues/16791#change-85205

* Author: 0x81000000 (/ /)
* Status: Open
* Priority: Normal
----------------------------------------
[Updated]
```
s = `csc x.cs`.sub(/.*?\n\n/m, '')
puts s if s != '';   exit $?.exitstatus if $?.exitstatus > 0
system 'mono x.exe'; exit $?.exitstatus
```
```
class Process::Status
    alias :es :exitstatus
end
```
```
s = `csc x.cs`.sub(/.*?\n\n/m, '')
puts s if s != '';   exit $?.es if $?.es > 0
system 'mono x.exe'; exit $?.es
```



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