ruby-changes:52237
From: nobu <ko1@a...>
Date: Sat, 18 Aug 2018 18:53:17 +0900 (JST)
Subject: [ruby-changes:52237] nobu:r64445 (trunk): NEWS: converted to Markdown [ci skip]
nobu 2018-08-18 18:53:11 +0900 (Sat, 18 Aug 2018) New Revision: 64445 https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=64445 Log: NEWS: converted to Markdown [ci skip] * NEWS: Converted to Markdown format, from (wrongly) Markdown-mixed RDoc format. Modified files: trunk/NEWS Index: NEWS =================================================================== --- NEWS (revision 64444) +++ NEWS (revision 64445) @@ -1,288 +1,333 @@ https://github.com/ruby/ruby/blob/trunk/NEWS#L1 -# -*- rdoc -*- +# -*- markdown -*- markup: Markdown -= NEWS for Ruby 2.6.0 +# NEWS for Ruby 2.6.0 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/$FEATURE_OR_BUG_NUMBER</tt>) +Note that each entry is kept so brief that no reason behind or reference +information is supplied with. For a full list of changes with all +sufficient information, see the ChangeLog file or Redmine +(e.g. `https://bugs.ruby-lang.org/issues/$FEATURE_OR_BUG_NUMBER`) -== Changes since the 2.5.0 release +## Changes since the 2.5.0 release -=== Language changes +### Language changes -* $SAFE is a process global state and we can set 0 again. [Feature #14250] +* `$SAFE` is a process global state and we can set 0 again. + [Feature #14250] * refinements take place at block passing. [Feature #14223] * `else` without `rescue` now causes a syntax error. [EXPERIMENTAL] -* constant names may start with a non-ASCII capital letter. [Feature #13770] +* constant names may start with a non-ASCII capital letter. + [Feature #13770] -* An endless range is introduced. You can write a range that has no end, like `(0..)`. - The following shows typical use cases. [Feature #12912] +* An endless range is introduced. You can write a range that has no end, + like `(0..)`. The following shows typical use cases. [Feature #12912] + ```ruby ary[1..] # identical to ary[1..-1] (1..).each {|index| ... } # infinite loop from index 1 ary.zip(1..) {|elem, index| ... } # ary.each.with_index(1) { } + ``` -* Non-Symbol key in keyword arguments hash causes an exception. +* Non-`Symbol` key in keyword arguments hash causes an exception. -=== Core classes updates (outstanding ones only) +### Core classes updates (outstanding ones only) -* Array +* `Array` - * Aliased methods: + * Aliased methods: - * Array#filter is a new alias for Array#select [Feature #13784] - * Array#filter! is a new alias for Array#select! [Feature #13784] + * `Array#filter` is a new alias for `Array#select`. + [Feature #13784] + * `Array#filter!` is a new alias for `Array#select!`. + [Feature #13784] -* Binding +* `Binding` - * New methods: + * New methods: - * added Binding#source_location. [Feature #14230] + * added `Binding#source_location`. [Feature #14230] - This method returns the source location of binding, a 2-element - array of `__FILE__` and `__LINE__`. Traditionally, the same - information could be retrieved by `eval("[__FILE__, __LINE__]", - binding)`, but we are planning to change this behavior so that - `Kernel#eval` ignores binding's source location [Bug #4352]. - So, users should use this newly-introduced method instead of - `Kernel#eval`. + This method returns the source location of binding, a 2-element + array of `__FILE__` and `__LINE__`. Traditionally, the same + information could be retrieved by `eval("[__FILE__, __LINE__]", + binding)`, but we are planning to change this behavior so that + `Kernel#eval` ignores binding's source location [Bug #4352]. + So, users should use this newly-introduced method instead of + `Kernel#eval`. -* Dir +* `Dir` - * New methods: + * New methods: - * added Dir#each_child and Dir#children instance methods. [Feature #13969] + * added `Dir#each_child` and `Dir#children` instance methods. + [Feature #13969] -* Enumerable +* `Enumerable` - * Aliased methods: + * Aliased methods: - * Enumerable#filter is a new alias for Enumerable#select [Feature #13784] + * `Enumerable#filter` is a new alias for `Enumerable#select`. + [Feature #13784] -* Enumerator::Lazy +* `Enumerator::Lazy` - * Aliased methods: + * Aliased methods: - * Enumerator::Lazy#filter is a new alias for Enumerator::Lazy#select [Feature #13784] + * `Enumerator::Lazy#filter` is a new alias for + `Enumerator::Lazy#select`. [Feature #13784] -* Exception +* `Exception` - * Exception#full_message takes :highlight and :order options [Bug #14324] + * `Exception#full_message` takes `:highlight` and `:order` options. + [Bug #14324] -* Hash +* `Hash` - * Aliased methods: + * Aliased methods: - * Hash#filter is a new alias for Hash#select [Feature #13784] - * Hash#filter! is a new alias for Hash#select! [Feature #13784] + * `Hash#filter` is a new alias for `Hash#select`. [Feature #13784] + * `Hash#filter!` is a new alias for `Hash#select!`. + [Feature #13784] -* IO +* `IO` - * new mode character 'x' to open files for exclusive access [Feature #11258] + * new mode character `'x'` to open files for exclusive access. + [Feature #11258] -* Kernel +* `Kernel` - * Kernel#then is a new alias for Kernel#yield_self [Feature #14594] + * `Kernel#then` is a new alias for `Kernel#yield_self`. + [Feature #14594] - * Kernel.#Complex takes :exception option to specify the way of error handling [Feature #12732] + * `Kernel.#Complex` takes `:exception` option to specify the way of + error handling. [Feature #12732] - * Kernel.#Float takes :exception option to specify the way of error handling [Feature #12732] + * `Kernel.#Float` takes `:exception` option to specify the way of error + handling. [Feature #12732] - * Kernel.#Integer takes :exception option to specify the way of error handling [Feature #12732] + * `Kernel.#Integer` takes `:exception` option to specify the way of + error handling. [Feature #12732] - * Kernel.#Rational takes :exception option to specify the way of error handling [Feature #12732] + * `Kernel.#Rational` takes `:exception` option to specify the way of + error handling. [Feature #12732] - * Kernel.#system takes :exception option to raise an exception on - failure. [Feature #14386] + * `Kernel.#system` takes `:exception` option to raise an exception on + failure. [Feature #14386] - * incompatible changes: - * system() and exec() do not close non-standard file descriptors - (The default of :close_others option is changed to false by default. - but we still set the FD_CLOEXEC flag on descriptors we create) [Misc #14907] + * incompatible changes: + * `system()` and `exec()` do not close non-standard file descriptors + (The default of `:close_others` option is changed to false by + default. but we still set the `FD_CLOEXEC` flag on descriptors we + create). [Misc #14907] -* KeyError +* `KeyError` - * KeyError#initialize accepts :receiver and :key options to set receiver and key in Ruby code. [Feature #14313] + * `KeyError#initialize` accepts `:receiver` and `:key` options to set + receiver and key in Ruby code. [Feature #14313] -* Module +* `Module` - * Module#method_defined?, Module#private_method_defined? and Module#protected_method_defined? now accepts the second parameter as optional. If it's true (=default), checks ancestor modules/classes, or checks only the class itself. [Feature #14944] + * `Module#method_defined?`, `Module#private_method_defined?` and + `Module#protected_method_defined?` now accepts the second parameter as + optional. If it's `true` (=default), checks ancestor modules/classes, + or checks only the class itself. [Feature #14944] -* NameError +* `NameError` - * NameError#initialize accepts :receiver option to set receiver in Ruby code. [Feature #14313] + * `NameError#initialize` accepts `:receiver` option to set receiver in + Ruby code. [Feature #14313] -* NoMethodError +* `NoMethodError` - * NoMethodError#initialize accepts :receiver option to set receiver in Ruby code. [Feature #14313] + * `NoMethodError#initialize` accepts `:receiver` option to set receiver + in Ruby code. [Feature #14313] -* Proc +* `Proc` - * Proc#call doesn't change $SAFE any more. [Feature #14250] + * `Proc#call` doesn't change `$SAFE` any more. [Feature #14250] -* Random +* `Random` - * New methods: + * New methods: - * added Random.bytes. [Feature #4938] + * added `Random.bytes`. [Feature #4938] -* Range +* `Range` - * Range#=== now uses #cover? instead of #include? method. [Feature #14575] + * `Range#===` now uses `#cover?` instead of `#include?` method. + [Feature #14575] -* RubyVM::AST +* `RubyVM::AST` - * RubyVM::AST.parse parses a given string and returns AST nodes. [experimental] - * RubyVM::AST.parse_file parses a given file and returns AST nodes. [experimental] + * `RubyVM::AST.parse` parses a given string and returns AST nodes. + [experimental] + * `RubyVM::AST.parse_file` parses a given file and returns AST nodes. + [experimental] -* String +* `String` - * String#split yields each substring to the block if given. [Feature #4780] + * `String#split` yields each substring to the block if given. + [Feature #4780] -* TracePoint +* `TracePoint` - * New methods: + * New methods: - * TracePoint#parameters [Feature #14694] + * `TracePoint#parameters` [Feature #14694] -=== Stdlib updates (outstanding ones only) +### Stdlib updates (outstanding ones only) -* ERB +* `ERB` - * Add :trim_mode and :eoutvar keyword arguments to ERB.new. Now non-keyword arguments other than first one - are softly deprecated and will be removed when Ruby 2.5 becomes EOL. [Feature #14256] + * Add `:trim_mode` and `:eoutvar` keyword arguments to `ERB.new`. Now + non-keyword arguments other than first one are softly deprecated and + will be removed when Ruby 2.5 becomes EOL. [Feature #14256] - * erb command's -S option is deprecated, which will be removed in the next version. + * erb command's `-S` option is deprecated, which will be removed in the + next version. -* FileUtils +* `FileUtils` - * New method: + * New method: - * FileUtils#cp_lr [Feature #4189] + * `FileUtils#cp_lr`. [Feature #4189] -* Matrix +* `Matrix` - * New method: + * New method: - * Matrix#antisymmetric? + * `Matrix#antisymmetric?` -* Net +* `Net` - * New method: + * New method: - * Add write_timeout keyword argument to Net::BufferedIO.new. [Feature #13396] + * Add `:write_timeout` keyword argument to `Net::BufferedIO.new`. + [Feature #13396] - * Add Net::BufferedIO#write_timeout, Net::BufferedIO#write_timeout=, - Net::HTTP#write_timeout, and Net::HTTP#write_timeout=. [Feature #13396] + * Add `Net::BufferedIO#write_timeout`, + `Net::BufferedIO#write_timeout=`, `Net::HTTP#write_timeout`, and + `Net::HTTP#write_timeout=`. [Feature #13396] - * New constant: + * New constant: - * Add Net::HTTPClientException to deprecate Net::HTTPServerException, - whose name is misleading. [Bug #14688] + * Add `Net::HTTPClientException` to deprecate + `Net::HTTPServerException`, whose name is misleading. [Bug #14688] -* REXML +* `REXML` - * Improved some XPath implementations: + * Improved some XPath implementations: - * concat() function: Stringify all arguments before concatenating + * `concat()` function: Stringify all arguments before concatenating - * string() function: Support context node + * `string()` function: Support context node - * string() function: Support processing instruction node + * `string()` function: Support processing instruction node - * Support "*:#{ELEMENT_NAME}" syntax in XPath 2.0 + * Support `"*:#{ELEMENT_NAME}"` syntax in XPath 2.0 - * Fixed some XPath implementations: + * Fixed some XPath implementations: - * "//#{ELEMENT_NAME}[#{POSITION}]" case + * `"//#{ELEMENT_NAME}[#{POSITION}]"` case - * string() function: Fix function(document) returns nodes that are - out of root elements. + * `string()` function: Fix `function(document)` returns nodes that + are out of root elements. - * "/ #{ELEMENT_NAME} " case + * `"/ #{ELEMENT_NAME} "` case - * "/ #{ELEMENT_NAME} [ #{PREDICATE} ]" case + * `"/ #{ELEMENT_NAME} [ #{PREDICATE} ]"` case - * "/ #{AXIS}:: #{ELEMENT_NAME} " case + * `"/ #{AXIS}:: #{ELEMENT_NAME} "` case - * "#{N}-#{M}" case: One ore more white spaces were required before "-" + * `"#{N}-#{M}"` case: One ore more white spaces were required before + `"-"` - * "/child::node()" case + * `"/child::node()"` case - * "#{FUNCTION}()/#{PATH}" case + * `"#{FUNCTION}()/#{PATH}"` case - * "@#{ATTRIBUTE}/parent::" case + * `"@#{ATTRIBUTE}/parent::"` case - * "name(#{NODE_SET})" case + * `"name(#{NODE_SET})"` case -* RSS +* `RSS` - * RSS::Parser.parse: Accept options as Hash. :validate, - :ignore_unknown_element, :parser_class options are available. + * `RSS::Parser.parse`: Accept options as `Hash`. `:validate`, + `:ignore_unknown_element`, `:parser_class` options are available. -* Set +* `Set` - * Aliased methods: + * Aliased methods: - * Set#filter! is a new alias for Set#select! [Feature #13784] + * `Set#filter!` is a new alias for `Set#select!`. [Feature #13784] -* URI +* `URI` - * Add URI::File to handle file URI scheme [Feature #14035] + * Add `URI::File` to handle file URI scheme. [Feature #14035] -=== Compatibility issues (excluding feature bug fixes) +### Compatibility issues (excluding feature bug fixes) -* File +* `File` - * File.read, File.binread, File.write, File.binwrite, File.foreach, - and File.readlines do not invoke external commands even if the path - starts with the pipe character |. [Feature #14245] + * `File.read`, `File.binread`, `File.write`, `File.binwrite`, + `File.foreach`, and `File.readlines` do not invoke external commands + even if the path starts with the pipe character `'|'`. + [Feature #14245] -* Dir +* `Dir` - * Dir.glob with '\0'-separated pattern list will be deprecated, and - is now warned. [Feature #14643] + * `Dir.glob` with `'\0'`-separated pattern list will be deprecated, and + is now warned. [Feature #14643] -=== Stdlib compatibility issues (excluding feature bug fixes) +### Stdlib compatibility issues (excluding feature bug fixes) -=== C API updates +### C API updates -=== Supported platform changes +### Supported platform changes -=== Implementation improvements +### Implementation improvements -* Speedup `Proc#call` because we don't need to care about `$SAFE` any more. [Feature #14318] - With `lc_fizzbuzz` benchmark which uses so many `Proc#call` we can measure - x1.4 improvements [Bug #10212]. +* Speedup `Proc#call` because we don't need to care about `$SAFE` any more. + [Feature #14318] -* Speedup `block.call` where `block` is passed block parameter. [Feature #14330] - Ruby 2.5 improves block passing performance. [Feature #14045] - Additionally, Ruby 2.6 improves the performance of passed block calling. + With `lc_fizzbuzz` benchmark which uses so many `Proc#call` we can + measure x1.4 improvements. [Bug #10212] -* Introduce an initial implementation of JIT (Just-in-time) compiler. [Feature #14235] [experimental] - * `--jit` option is added to enable JIT. `--jit-verbose=1` is good for inspection. See `ruby --help` for others. - * This JIT relies on C compiler used to build Ruby, on runtime. Only gcc and clang are supported for the JIT - for now, and MinGW support has some issues. - * As of 2.6.0-preview1, we're just preparing infrastructure for JIT and very few optimizations are implemented. - So it's not ready for benchmarking Ruby's JIT performance yet. It's known that current JIT enablement makes - Rails application slower for now. +* Speedup `block.call` where `block` is passed block parameter. + [Feature #14330] -* VM generator script renewal; makes the generated VM more optimized. [GH-1779] + Ruby 2.5 improves block passing performance. [Feature #14045] -* Thread cache enabled for pthreads platforms - (for `Thread.new` and `Thread.start`) [Feature #14757] + Additionally, Ruby 2.6 improves the performance of passed block calling. -=== Miscellaneous changes +* Introduce an initial implementation of JIT (Just-in-time) compiler. + [Feature #14235] [experimental] + * `--jit` option is added to enable JIT. `--jit-verbose=1` is good for + inspection. See `ruby --help` for others. + * This JIT relies on C compiler used to build Ruby, on runtime. Only + gcc and clang are supported for the JIT for now, and MinGW support has + some issues. + * As of 2.6.0-preview1, we're just preparing infrastructure for JIT and + very few optimizations are implemented. So it's not ready for + benchmarking Ruby's JIT performance yet. It's known that current JIT + enablement makes Rails application slower for now. -* On macOS, shared libraries no longer include a full version number of ruby in their names. - This eliminates the burden of each teeny upgrade on the platform that users need to rebuild every extension library. +* VM generator script renewal; makes the generated VM more optimized. + [GH-1779] + +* Thread cache enabled for pthreads platforms (for `Thread.new` and + `Thread.start`). [Feature #14757] + +### Miscellaneous changes + +* On macOS, shared libraries no longer include a full version number of ruby + in their names. This eliminates the burden of each teeny upgrade on the + platform that users need to rebuild every extension library. * Before: * libruby.2.6.0.dylib -- ML: ruby-changes@q... Info: http://www.atdot.net/~ko1/quickml/