Issue #13835 has been updated by shevegen (Robert A. Heiler).


Indeed, sounds like a bug; at the least it is somewhat surprising behaviour to me. Not
that I think I would have ever found the above behaviour, I always used open-uri with
a remote URL so far. :)

----------------------------------------
Bug #13835: Using 'open-uri' with 'tempfile' causes an exception
https://bugs.ruby-lang.org/issues/13835#change-66259

* Author: thorsteneckel (Thorsten Eckel)
* Status: Open
* Priority: Normal
* Assignee: 
* Target version: 
* ruby -v: 
* Backport: 2.2: UNKNOWN, 2.3: UNKNOWN, 2.4: UNKNOWN
----------------------------------------
Hi there,

try this in your current ruby env:

~~~ ruby
require 'tempfile'
require 'open-uri'

temp_file = Tempfile.new
open(temp_file, 'a')
~~~

Get this:

~~~
/Users/~/.rvm/rubies/ruby-2.4.1/lib/ruby/2.4.0/tempfile.rb:142:in `open': wrong number of arguments (given 1, expected 0) (ArgumentError)
  from /Users/~/.rvm/rubies/ruby-2.4.1/lib/ruby/2.4.0/open-uri.rb:31:in `open'
  from debug.rb:5:in `<main>'
~~~

I created the pull request https://github.com/ruby/ruby/pull/1680 as a proposal. It's based on the previous pull request https://github.com/ruby/ruby/pull/1675 and feedback of @nobu .

Greetings.



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