[ruby-core:97454] [Ruby master Feature#16688] Allow #to_path object as argument to system()

Issue #16688 has been updated by shevegen (Robert A. Heiler).


I do not have a strong opinion either way; I myself sort of just use Dir[]
rather than Pathname (I just love Dir['*.rb'] and things like that), so I would
not need pathname anyway. But I can understand the argument given - 10 years is
also quite a long time ago, and the linked issue actually then refers to a commit
from matz in 2004, so 16 years ago. That's a long time.

I would recommend to focus primarily on #to_path rather than a #to_str, if only
for the purpose of the suggestion here; and perhaps suggest it for an upcoming
developer meeting, if this is wanted by Daniel, such as for
https://bugs.ruby-lang.org/issues/16661.

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Feature #16688: Allow #to_path object as argument to system()
https://bugs.ruby-lang.org/issues/16688#change-84598

* Author: Dan0042 (Daniel DeLorme)
* Status: Open
* Priority: Normal
----------------------------------------
I often work with Pathname objects, but when passing them to a system command I find it a bit tedious that they have to be explicitly converted to a String.

```ruby
file = BASE + "config.json"
system(@cmd, file)      #=> TypeError (no implicit conversion of Pathname into String)
system(@cmd, file.to_s) #=> works
```

I propose that the system/exec/spawn family of methods should try to convert their arguments using `to_path`, if `to_str` fails. I believe it makes perfect sense, since commandline arguments are so often pathnames.

This includes in/out redirection. `system("ls", out: Pathname.new("file"))` should be valid.



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