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11 messages 2013/01/01

[#51328] [ruby-trunk - Bug #7676][Open] Comparison of Float::NAN in array behaves unexpectedly — "simonrussell (Simon Russell)" <spam+ruby@...>

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[#51347] [ruby-trunk - Bug #7679][Open] IRB history is broken — "zzak (Zachary Scott)" <zachary@...>

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[#51389] [ruby-trunk - Bug #7688][Open] Error hiding with rb_rescue() on Comparable#==, #coerce and others — "Eregon (Benoit Daloze)" <redmine@...>

34 messages 2013/01/11

[#51430] [ruby-trunk - Bug #7696][Open] Lazy enumerators with state can't be rewound — "marcandre (Marc-Andre Lafortune)" <ruby-core@...>

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[#51437] [ruby-trunk - Bug #7698][Open] RubyGems 2.0 has an incompatibility about installation of extension libraries — "mrkn (Kenta Murata)" <muraken@...>

21 messages 2013/01/15

[#51454] [CommonRuby - Feature #7701][Open] Non-optional (required) keyword args — "headius (Charles Nutter)" <headius@...>

31 messages 2013/01/15

[#51499] [ruby-trunk - Feature #7712][Open] Add .txt extensions to all plain-text documentation files for Windows users — "postmodern (Hal Brodigan)" <postmodern.mod3@...>

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[#51619] [ruby-trunk - Feature #7738][Open] Deprecate Set#+ as an alias of Set#|, use it for symmetric difference. Introduce Hash#| for Hash#reverse_merge in Rails. — "alexeymuranov (Alexey Muranov)" <redmine@...>

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[#51623] [ruby-trunk - Feature #7739][Open] Define Hash#| as Hash#reverse_merge in Rails — "alexeymuranov (Alexey Muranov)" <redmine@...>

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[#51714] [CommonRuby - Feature #7747][Open] Expanded API for Binding semantics — "jballanc (Joshua Ballanco)" <jballanc@...>

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[#51742] [ruby-trunk - Bug #7756][Open] clang 3.2 sees through UNINITIALIZED_VAR macro, gives warning — "drbrain (Eric Hodel)" <[email protected]>

10 messages 2013/01/29

[#51763] [ruby-trunk - Bug #7758][Open] Ruby on Windows crashes when active codepage is codepage 65001 and outputting unicode character — "joshc (Josh C)" <josh.nw@...>

16 messages 2013/01/30

[ruby-core:51647] [ruby-trunk - Bug #7678] $_ and $~ are shared across Fibers halfway

From: "ko1 (Koichi Sasada)" <redmine@...>
Date: 2013-01-25 03:42:39 UTC
List: ruby-core #51647
Issue #7678 has been updated by ko1 (Koichi Sasada).

Target version set to 2.0.0

Nobu, should we finish this issue before 2.0?
----------------------------------------
Bug #7678: $_ and $~ are shared across Fibers halfway
https://bugs.ruby-lang.org/issues/7678#change-35608

Author: nobu (Nobuyoshi Nakada)
Status: Open
Priority: Normal
Assignee: 
Category: core
Target version: 2.0.0
ruby -v: r38748


$_ and $~ have thread local method scope, but are shared across fibers in same thread.

  $ ./ruby -v -e '/a/ =~ "a"; p $~; Fiber.new{/b/=~"b"; p $~}.resume; p $~'
  ruby 2.0.0dev (2013-01-09 trunk 38748) [x86_64-darwin11]
  #<MatchData "a">
  #<MatchData "b">
  #<MatchData "b">

But, it is cleared at Fiber.start.

  $ ./ruby -v -e '/a/ =~ "a"; p $~; Fiber.new{p $~}.resume; p $~'
  ruby 2.0.0dev (2013-01-09 trunk 38748) [x86_64-darwin11]
  #<MatchData "a">
  nil
  nil

These two behaviors seem mismatched.  I think:

* If they should be shared, then the latter example should show same
  MatchData 3 times.

* If they should be cleared at starting fibers, those variables in the
  original fiber should be unchanged.



-- 
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