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ruby--ruby/NEWS
k0kubun e16bd0f4d8 bin/erb: change template file encoding to UTF-8 
Unlike Ruby source file encoding (script encoding) whose default is
changed to UTF-8 in Ruby 2.0 (Feature #6679), template's file encoding
given to erb(1) has been ASCII-8BIT since ERB supports m17n at r21170.

Like Ruby source file encoding, erb template file encoding should be
UTF-8 in Ruby 2.

[Bug #14095] [ruby-core:83708]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@60739 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2017-11-10 13:59:01 +00:00

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# -*- rdoc -*-
= NEWS for Ruby 2.5.0
This document is a list of user visible feature changes made between
releases except for bug fixes.
Note that each entry is kept so brief that no reason behind or
reference information is supplied with. For a full list of changes
with all sufficient information, see the ChangeLog file or Redmine
(e.g. <tt>https://bugs.ruby-lang.org/issues/$FEATURE_OR_BUG_NUMBER</tt>)
== Changes since the 2.4.0 release
=== Language changes
* Top-level constant look-up is removed. [Feature #11547]
* rescue/else/ensure are allowed inside do/end blocks. [Feature #12906]
* refinements take place in string interpolations. [Feature #13812]
=== Core classes updates (outstanding ones only)
* Array
* Array#append [Feature #12746]
* Array#prepend [Feature #12746]
* Dir
* Dir.glob provides new optional keyword argument, :base.
[Feature #13056]
* Dir.children [Feature #11302]
* Dir.each_child [Feature #11302]
* File
* :newline option to File.open implies text mode now. [Bug #13350]
* File#path now raises an IOError for files opened with
File::Constants::TMPFILE option. [Feature #13568]
* File.stat, File.exist?, and other rb_stat()-using methods release GVL
[Bug #13941]
* File.rename releases GVL [Feature #13951]
* Hash
* Hash#transform_keys [Feature #13583]
* Hash#transform_keys! [Feature #13583]
* Hash#slice [Feature #8499]
* IO
* IO#pread [Feature #4532]
* IO#pwrite [Feature #4532]
* IO#copy_stream tries copy offload with copy_file_range(2) [Feature #13867]
* IO#write accepts multiple arguments [Feature #9323]
* IOError
* exception message "stream closed" is changed [Bug #13405]
* Integer
* Integer.sqrt [Feature #13219]
* Integer#step does no longer rescue exceptions when given
a step value which cannot be compared with #> to 0. [Feature #7688]
* Integer#{round,floor,ceil,truncate} now always return an Integer.
[Bug #13420]
* Kernel
* Kernel#yield_self [Feature #6721]
* Net::HTTP
* Net::HTTP.new supports no_proxy parameter [Feature #11195]
* Net::HTTP#min_version/max_version [Feature #9450]
* Numeric
* Numerical comparison operators (<,<=,>=,>) no longer rescue exceptions
of #coerce. Return nil in #coerce if the coercion is impossible.
[Feature #7688]
* Process
* Precision of Process.times is improved if getrusage(2) exists. [Feature #11952]
* Range
* Range#initialize no longer rescue exceptions when comparing begin and
end with #<=> and raise a "bad value for range" ArgumentError
but instead let the exception from the #<=> call go through.
[Feature #7688]
* Regexp
* Update to Onigmo 6.1.1.
* Support absent operator https://github.com/k-takata/Onigmo/issues/82
* String
* String#-@ deduplicates unfrozen strings. Already-frozen
strings remain unchanged for compatibility. [Feature #13077]
* -"literal" (String#-@) optimized to return the same object
(same as "literal".freeze in Ruby 2.1+) [Feature #13295]
* String#{casecmp,casecmp?} now return nil for non-string arguments
instead of raising a TypeError. [Bug #13312]
* String#delete_prefix is added to remove prefix [Feature #12694]
* String#delete_prefix! is added to remove prefix destructively [Feature #12694]
* String#delete_suffix is added to remove suffix [Feature #13665]
* String#delete_suffix! is added to remove suffix destructively [Feature #13665]
* String#each_grapheme_cluster and String#grapheme_clusters is added to
enumerate grapheme clusters [Feature #13780]
* String#start_with? supports regexp [Feature #13712]
* Regexp/String: Update Unicode version from 9.0.0 to 10.0.0 [Feature #13685]
* Thread
* Thread#fetch [Feature #13009]
* Description set by Thread#name= is now visible on Windows 10.
* Time
* Time#at receives 3rd argument which specifies the unit of 2nd argument.
[Feature #13919]
* KeyError
* KeyError#receiver [Feature #12063]
* KeyError#key [Feature #12063]
=== Stdlib updates (outstanding ones only)
* Bundler
* Add Bundler to Standard Library. [Feature #12733]
* DRb
* ACL::ACLEntry.new no longer suppresses IPAddr::InvalidPrefixError.
* ERB
* Add ERB#result_with_hash to render a template with local variables passed
with a Hash object. [Feature #8631]
* Default template file encoding is changed from ASCII-8BIT to UTF-8 in erb
command. [Bug #14095]
* Carriage returns are changed to be trimmed properly if trim_mode is specified
and used. Duplicated newlines will be removed on Windows. [Bug #5339] [Bug #11464]
* IPAddr
* New methods are added:
* IPAddr#prefix
* IPAddr#loopback?
* IPAddr#private? [Feature #11666]
* IPAddr#link_local? [Feature #10912]
* IPAddr now rejects invalid address mask. [Bug #13399]
* IPAddr#ipv4_compat and #ipv4_compat? are deprecated. [Bug #13769]
* Net::HTTP
* Add more HTTP status classes
* Net::HTTP::STATUS_CODES is added as HTTP Status Code Repository [Misc #12935]
* Net::HTTP#proxy_user and Net::HTTP#proxy_pass now reflects http_proxy
environment variable if the system's environment variable is multiuser
safe. [Bug #12921]
* Pathname
* New method:
* Pathname#glob [Feature #7360]
* Psych
* Update to Psych 3.0.0.beta3.
* RbConfig
* New constants:
* RbConfig::LIMITS is added to provide the limits of C types.
This is available when rbconfig/sizeof is required.
* Ripper
* New method:
* Ripper#state is added to tell the state of scanner. [Feature #13686]
* New constants:
* Ripper::EXPR_BEG and so on for Ripper#state.
* RDoc
* Update to RDoc 6.0.0.beta3.
* Replaced IRB based lexer with Ripper. It much improves the speed of generating document.
* https://github.com/ruby/rdoc/pull/512
* Rubygems
* Update to Rubygems 2.7.0.
* http://blog.rubygems.org/2017/11/01/2.7.0-released.html
* http://blog.rubygems.org/2017/08/27/2.6.13-released.html
* http://blog.rubygems.org/2017/10/09/unsafe-object-deserialization-vulnerability.html
* SecureRandom
* New methods:
* SecureRandom.alphanumeric
* Set
* Add Set#to_s as alias to #inspect [Feature #13676]
* Add Set#=== as alias to #include? [Feature #13801]
* Add Set#reset [Feature #6589]
* StringIO
* StringIO#write accepts multiple arguments
* WEBrick
* Add Server Name Indication (SNI) support [Feature #13729]
* Zlib
* Zlib::GzipWriter#write accepts multiple arguments
=== Compatibility issues (excluding feature bug fixes)
* BasicSocket#read_nonblock and BasicSocket#write_nonblock no
longer sets the O_NONBLOCK file description flag as side effect
(on Linux only) [Feature #13362]
* Net::HTTP
* Net::HTTP#start now pass :ENV to p_addr by default. [Bug #13351]
To avoid this, pass nil explicitly.
* Random.raw_seed renamed to become Random.urandom. It is now
applicable to non-seeding purposes due to [Bug #9569].
* Socket::Ifaddr#vhid is added [Feature #13803]
* ConditionVariable, Queue and SizedQueue reimplemented for speed.
They no longer subclass Struct. [Feature #13552]
=== Stdlib compatibility issues (excluding feature bug fixes)
* mathn.rb
Removed from stdlib. [Feature #10169]
* Rubygems
* Removed "ubygems.rb" file from stdlib. It's needless since Ruby 1.9.
=== C API updates
=== Supported platform changes
* Drop to support NaCl platform
* https://bugs.chromium.org/p/chromium/issues/detail?id=239656#c160
=== Implementation improvements
* (This might not be a "user visible feature change" but) Hash class's
hash function is now SipHash13. [Feature #13017]
* SecureRandom now prefers OS-provided sources than OpenSSL. [Bug #9569]
* Mutex rewritten to be smaller and faster [Feature #13517]
* Performance of block passing using block parameters is improved by
lazy Proc allocation [Feature #14045]
=== Miscellaneous changes
* Print backtrace and error message in reverse order if STDERR is unchanged and a tty.
[Feature #8661] [experimental]
* configure option --with-ext now mandates its arguments. So for
instance if you run ./configure --with-ext=openssl,+ then the
openssl library is guaranteed compiled, otherwise the build fails
abnormally.
Note however to always add the ",+" at the end of the argument.
Otherwise nothing but openssl are built. [Feature #13302]
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