Issue #5926 has been reported by Charles Nutter.

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Bug #5926: Procs created by Method#to_proc do not pass block through.
https://bugs.ruby-lang.org/issues/5926

Author: Charles Nutter
Status: Open
Priority: Normal
Assignee: 
Category: core
Target version: 
ruby -v: ruby 1.8.7 (2011-12-28 patchlevel 357) [i686-darwin10.8.0]


The Proc object you get back from a Method on which you have called to_proc does not appear to pass blocks through when called. I do not see any reason why it should behave this way.

system ~/projects/rubyspec $ rvm 1.8.7 do ruby -v -e "def foo; yield; end; method(:foo).to_proc.call {puts 'ok'}"
ruby 1.8.7 (2011-12-28 patchlevel 357) [i686-darwin10.8.0]
-e:1:in `foo': no block given (LocalJumpError)
	from -e:1:in `to_proc'
	from -e:1:in `call'
	from -e:1

system ~/projects/rubyspec $ rvm 1.9.3 do ruby -v -e "def foo; yield; end; method(:foo).to_proc.call {puts 'ok'}"
ruby 1.9.3p0 (2011-10-30 revision 33570) [x86_64-darwin10.8.0]
ok

system ~/projects/rubyspec $ rvm 1.9.2 do ruby -v -e "def foo; yield; end; method(:foo).to_proc.call {puts 'ok'}"
ruby 1.9.2p290 (2011-07-09 revision 32553) [x86_64-darwin10.8.0]
ok

Rubinius already implements it the 1.9 way in both 1.8 and 1.9 modes, and JRuby will do so from version 1.6.6 on.


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