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# -*- rd -*-
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.
== Changes since the 1.9.3 release
=== C API updates
* NUM2SHORT() and NUM2USHORT() added. They are similar to NUM2INT, but short.
=== Library updates (outstanding ones only)
* builtin classes
* Enumerable
* added method:
* added Enumerable#lazy method for lazy enumeration.
* aliased method:
* ENV.to_h is a new alias for ENV.to_hash
* Hash
* added method:
* added Hash#to_h as explicit conversion method, like Array#to_a.
* extended method:
* Hash#default_proc= can be passed nil to clear the default proc.
* Kernel
* added method:
* added Kernel#Hash conversion method like Array() or Float().
* extended method:
* Kernel#warn accepts multiple args in like puts.
* incompatible changes:
* system() and exec() closes non-standard file descriptors
(The default of :close_others option is changed to true by default.)
* respond_to? against a protected method now returns false unless
the second argument is true.
* LoadError
* added method:
* added LoadError#path method to return the file name that could not be
* NilClass
* added method:
* added nil.to_h which returns {}
* Signal
* incompatible changes:
* Signal.trap raises ArgumentError when :SEGV, :BUS, :ILL, :FPE, :VTALRM
are specified.
* Struct
* added method:
* added Struct#to_h returning values with keys corresponding to the
instance variable names.
* Time
* change return value:
* Time#to_s returned encoding defaults to US-ASCII but automatically
transcodes to Encoding.default_internal if it is set.
* Fiber
* incompatible changes:
* Fiber#resume cannot resume a fiber which invokes "Fiber#transfer".
* net/imap
* new methods:
* Net::IMAP.default_port
* Net::IMAP.default_imap_port
* Net::IMAP.default_tls_port
* Net::IMAP.default_ssl_port
* Net::IMAP.default_imaps_port
* ostruct
* new methods:
* OpenStruct#to_h converts the struct to a hash.
* pathname
* extended method:
* Pathname#find returns an enumerator if no block is given.
* resolv
* new methods:
* Resolv::DNS#timeouts=
* Resolv::DNS::Config#timeouts=
* shellwords
* Shellwords#shellescape() now stringifies the given object using to_s.
* Shellwords#shelljoin() accepts non-string objects in the given
array, each of which is stringified using to_s.
* syslog
* Added Syslog::Logger which provides a Logger API atop Syslog.
* lib/tmpdir.rb
* incompatible changes:
* Dir.mktmpdir uses FileUtils.remove_entry instead of
FileUtils.remove_entry_secure. This means that applications should not
change the permission of the created temporary directory to make
accessible from other users.
* zlib
* Added support for the new deflate strategies Zlib::RLE and Zlib::FIXED.
* openssl
* Consistently raise an error when trying to encode nil values. All instances
of OpenSSL::ASN1::Primitive now raise TypeError when calling to_der on an
instance whose value is nil. All instances of OpenSSL::ASN1::Constructive
raise NoMethodError in the same case. Constructing such values is still
=== Language changes
=== Compatibility issues (excluding feature bug fixes)
* Signal.trap
See above.
* Merge Onigmo.
* The :close_others option is true by default for system() and exec().
Also, the close-on-exec flag is set by default for all new file descriptors.
This means file descriptors doesn't inherit to spawned process unless
explicitly requested such as system(..., fd=>fd).
* Kernel#respond_to? against a protected method now returns false
unless the second argument is true.
* Dir.mktmpdir in lib/tmpdir.rb
See above.
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