[ruby-core:84064] [Ruby trunk Feature#12275] String unescape

Issue #12275 has been updated by tad (Tadashi Saito).


A few days ago, I attended at Ruby developers' meeting.
We concluded that the implementation is immature, so I need to improve in several points before commit.

* Encoding of a `undump`ed string which including `\uXXXX` before `undump` should be UTF-8 automatically
* '"...".force_encoding("...")' form should be parsed
* `self` must be wrapped with double quotes
  * We need strict handling to clarify the spec

Improvements must be done in a week or so, then I'll require code reviewing.
After that,  I'll mention to the 2.5 release manager, naruse, to get approval to check in.

\# Yes, I have to hurry...!

----------------------------------------
Feature #12275: String unescape
https://bugs.ruby-lang.org/issues/12275#change-68152

* Author: asnow (Andrew Bolshov)
* Status: Assigned
* Priority: Normal
* Assignee: tad (Tadashi Saito)
* Target version: 
----------------------------------------
I think it will be usefull to have function that convert input string as it was written in prime qouted string or in double qouted string. It's part of metaprogramming.
Example:

~~~ ruby
class String
  # Create new string like it will be writed in qoutes. Optional argument define type of qouting used: true - prime qoute, false - double qoute. Default is double qoute.
  def unescape prime = false
    eval( prime ? "'#{self}'" : "\"#{self}\"" )
  end
end

"\\\t".unescape # => "\t"
~~~

Other requests:
http://www.rubydoc.info/github/ronin-ruby/ronin-support/String:unescape
http://stackoverflow.com/questions/4265928/how-do-i-unescape-c-style-escape-sequences-from-ruby
http://stackoverflow.com/questions/8639642/best-way-to-escape-and-unescape-strings-in-ruby

Realized
http://www.rubydoc.info/github/ronin-ruby/ronin-support/String:unescape

---Files--------------------------------
benchmark.rb (193 Bytes)
v1.patch (8.95 KB)


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