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Bug #340: 1.9/trunk does not work when compiled with llvm-gcc4 2.3 (gcc 4.2.1)

Bug #595: Fiber ignores ensure clause

Bug #1020: Matrix#rank loops in some circumstances

Bug #5246: bootstraptest fails on ia64

Bug #5464: compile error in vm_eval.c

Bug #5469: Bus Error when accessing NAN and INFINITY

Bug #5516: fill_standard_fds uses F_GETFD which is not defined on MinGW (broken build)

Bug #5954: IO.read_nonblock on IO.pipe generates Errno::EBADF (MinGW)

Bug #6038: #instance_eval bug

Bug #6087: How should inherited methods deal with return values of their own subclass?

Bug #6408: DelegateClass#eql? and <=> don't work as expected

Bug #7442: StringScanner#charpos vs StringScanner#pos

Bug #7445: strptime('%s %z') doesn't work

Bug #8036: Unable to compile Ruby 2.0.0p20 on Mac OSX 10.7.5

Bug #9121: [PATCH] Remove rbtree implementation of SortedSet due to performance regression

Bug #10417: IO#set_encoding without int_enc doesn't keep current internal encoding

Feature #1586: Including a module already present in ancestors should not be ignored

Feature #1644: recv on inherited socket wrapped in TCPSocket does not read data, on Windows

Feature #2013: [PATCH] a = *b calls b.*@

Feature #2043: incompatible character encodings

Feature #2709: $VERBOSE, $DEBUG and Kernel#sprintf

Feature #3289: Division of negative numbers

Feature #3627: catchのブロックを再実行するメソッド

Feature #3688: redef keyword for method redefinition in Ruby 2.0

Feature #3944: Add Fiber#root? method

Feature #4007: numeric literal syntax sugar

Feature #4288: Allow invoking arbitrary method names with foo."something" syntax

Feature #4897: Define Math::TAU and BigMath.TAU. The "true" circle constant, Tau=2*Pi. See http://tauday.com/

Feature #4963: Refine and Document the Issue Tracking Process

Feature #5009: Bang method (!) consistency in Ruby 2 API

Feature #5120: String#split needs to be logical

Feature #5352: How about using <> to represent Here Document?

Feature #5400: Remove flip-flops in 2.0

Feature #5422: File.fnmatch != Dir.glob # {no,sets}

Feature #5455: $SAFE should be removed

Feature #5456: kernel#syscall() should be removed.

Feature #5478: import Set into core, add syntax

Feature #5479: import StringIO into core, add String#to_io

Feature #5480: remove GServer from stdlib

Feature #5482: Rubinius as basis for Ruby 2.0

Feature #5494: Proposal: Improved Finalizer Semantics

Feature #5512: Integer#/ の改訂

Feature #5513: Numeric へ述語語の追加

Feature #5514: Numeric への quotient と quotrem の追加

Feature #5520: Numeric#exact?、Numeric#inexact? の追加

Feature #5521: Numeric#rational?、Numeric#complex?、Numeric#float? の追加

Feature #5522: Numeric#finite?、Numeric#infinite?、Numeric#nan? の追加

Feature #5523: Numeric#sign の追加

Feature #5632: Attempt to open included class shades it instead.

Feature #5695: CoffeeScript "is" and "isnt" keywords

Feature #5825: Sweet instance var assignment in the object initializer

Feature #6083: Hide a Bignum definition

Feature #6201: do_something then return :special_case (include "then" operator)

Feature #6219: Return value of Hash#store

Feature #6251: Magic comments for compile options

Feature #6265: Remove 'useless' 'concatenation' syntax

Feature #6270: add "??a" support for "not defined?(a) or a.nil?"

Feature #6287: nested method should only be visible by nesting/enclosing method

Feature #6452: Allow extend to override class methods

Feature #6586: debugger belongs to core

Feature #6594: Integrated Functor

Feature #6678: Precedence of ^ operator

Feature #6688: Object#replace

Feature #6711: Optional typing and method overloading

Feature #6733: New inspect framework

Feature #6739: One-line rescue statement should support specifying an exception class

Feature #6801: String#~ for a here document

Feature #6806: Support functional programming: forbid instance/class variables for ModuleName::method_name, allow for ModuleName.method_name

Feature #6810: `module A::B; end` is not equivalent to `module A; module B; end; end` with respect to constant lookup (scope)

Feature #6828: Constancy of Constants

Feature #6841: Shorthand for Assigning Return Value of Method to Self

Feature #6868: Make `do` in block syntax optional when the block is the last argument of a method and is not an optional argument

Feature #6869: Do not treat `_` parameter exceptionally

Feature #7019: allow `private` and `protected` keywords to take blocks

Feature #7220: Separate IO#dup, StringIO#initialize_copy from dup(2)

Feature #7346: object(...) as syntax sugar for object.call(...)

Feature #7359: #eql? and #equal? naming

Feature #7432: Explicit way to define local variable in scope

Feature #7487: Cutting through the issues with Refinements

Feature #7511: short-circuiting logical implication operator

Feature #7519: Module Single Inheritance

Feature #7545: Make Range act as a "lazy ordered set"

Feature #7546: Change behavior of `Array#slice` for an argument of `Range` class

Feature #7639: More freedom for location of comments

Feature #7644: In refinements, change "using" keyword to a less generic word.

Feature #7711: RubyGems uses autoload

Feature #7738: Deprecate Set#+ as an alias of Set#|, use it for symmetric difference. Introduce Hash#| for Hash#reverse_merge in Rails.

Feature #7748: Contextual send

Feature #7792: Make symbols and strings the same thing

Feature #7796: Hash#keys should return a set

Feature #7797: Hash should be renamed to StrictHash and a new Hash should be created to behave like AS HashWithIndifferentAccess

Feature #7907: Give meaning to staby word

Feature #7986: Custom case statement comparison method

Feature #8038: Keyword `object` to be used instead of `class <<`

Feature #8164: Public/Private

Feature #8229: extend Hash.include?

Feature #8270: Ruby should build without thread support (aka minix)

Feature #8365: Make variables objects

Feature #8377: Deprecate :: for method calls in 2.1

Feature #8437: custom operators, unicode

Feature #8563: Instance variable arguments

Feature #8807: Custom literals

Feature #9001: Please package better standard library

Feature #9076: New one-argument block syntax: &.

Feature #9650: String#size versus String#length

Feature #9704: Refinements as files instead of modules

Feature #10042: Deprecate postfix rescue syntax for removal in 3.0

Feature #10119: [PATCH] [net/imap] Add CHANGEDSINCE FETCH modifier + complementary add MODSEQ Message Data Item in FETCH Command

Feature #10238: todo: remove dependency on malloc_usable_size

Feature #10318: [PATCH 0/n] Let underscore be positionally matched arg to omit binding obvious variable.

Feature #10406: Method starting with a capital is not detected when parentheses and receiver are omitted

Feature #10489: Add inherit method for clearer and multiple inheritance

Feature #10499: Eliminate implicit magic in Proc.new and Kernel#proc

Feature #10506: Imprve Enumerator.any? behavior

Feature #10652: Automatic detection of user and password from env

Feature #10730: Implement Array#bsearch_index

Misc #10278: [RFC] st.c: use ccan linked list

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