Issue #12944 has been updated by nobu (Nobuyoshi Nakada).


Nitpicking an edge case, these two are different.

```ruby
puts "foo", "" #=> "foo\n" and "\n"
```
```ruby
puts ["foo", ""].join("\n") #=> "foo\n"
```

----------------------------------------
Feature #12944: Change Kernel#warn to call Warning.warn
https://bugs.ruby-lang.org/issues/12944#change-64472

* Author: jeremyevans0 (Jeremy Evans)
* Status: Closed
* Priority: Normal
* Assignee: 
* Target version: 
----------------------------------------
Currently, Kernel#warn is basically the same as $stderr.puts.  With the new Warning.warn support in ruby 2.4, it makes sense for Kernel#warn to call Warning.warn, otherwise you will not be able to use Warning.warn to filter/process warning messages generated by Kernel#warn.

The Kernel#warn API is different than the Warning.warn API, the attached patch tries to get similar behavior, but there are probably corner cases where the behavior is different.

---Files--------------------------------
0001-Change-Kernel-warn-to-call-Warning.warn.patch (1.88 KB)
0001-Change-Kernel-warn-to-call-Warning.warn.patch (1.89 KB)
0001-Change-Kernel-warn-to-call-Warning.warn.patch (2.36 KB)
0001-Change-Kernel-warn-to-call-Warning.warn.patch (2.3 KB)
0001-Change-Kernel-warn-to-call-Warning.warn.patch (3.23 KB)
0001-Restore-behavior-of-Kernel-warn-accepting-arrays-arg.patch (1.23 KB)


-- 
https://bugs.ruby-lang.org/

Unsubscribe: <mailto:ruby-core-request / ruby-lang.org?subject=unsubscribe>
<http://lists.ruby-lang.org/cgi-bin/mailman/options/ruby-core>