From: duerst@...
Date: 2017-11-24T08:04:28+00:00
Subject: [ruby-core:83875] [Ruby trunk Feature#12275] String unescape

Issue #12275 has been updated by duerst (Martin D��rst).


tad (Tadashi Saito) wrote:

> > Also, please think about encodings. Some people may want all non-ASCII characters escaped, but others may not want that at all.
> 
> Unfortunately, I couldn't understand your concern.  I think we're discussing about unescaping/undumping, not escaping.
> Note that `String#dump` already escapes all of non-ASCII characters, so I'm trying to unescape them all with `undump`.

Thanks for your explanation. I was confused.

Still, there is the question of what the encoding of the result of `#unescape` should be.

----------------------------------------
Feature #12275: String unescape
https://bugs.ruby-lang.org/issues/12275#change-67914

* Author: asnow (Andrew Bolshov)
* Status: Open
* Priority: Normal
* Assignee: 
* 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



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