[ruby-core:73582] [Ruby trunk - Bug #12034] [Open] RegExp does not respect file encoding directive

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Issue #12034 has been reported by Vit Ondruch.

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Bug #12034: RegExp does not respect file encoding directive
https://bugs.ruby-lang.org/issues/12034

* Author: Vit Ondruch
* Status: Open
* Priority: Normal
* Assignee: 
* ruby -v: ruby 2.3.0p0 (2015-12-25 revision 53290) [x86_64-linux]
* Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN, 2.3: UNKNOWN
----------------------------------------
~~~
$ cat regexp-encoding.rb
# -*- encoding: binary -*-
puts ''.encoding
puts //.encoding

$ ruby regexp-encoding.rb 
ASCII-8BIT
US-ASCII
~~~

The RegExp should have ASCII-8BIT encoding IMO.




Actually there is something different how Ruby 2.3 behaves with regards to encoding, since I cannot compile raindrops gem with Ruby 2.3 anymore due to this test error:

~~~
 1) Error:
TestLinux#test_unix_resolves_symlinks:
RegexpError: /.../n has a non escaped non ASCII character in non ASCII-8BIT script
    /builddir/build/BUILD/rubygem-raindrops-0.13.0/usr/share/gems/gems/raindrops-0.13.0/lib/raindrops/linux.rb:57:in `unix_listener_stats'
    /builddir/build/BUILD/rubygem-raindrops-0.13.0/usr/share/gems/gems/raindrops-0.13.0/test/test_linux.rb:97:in `test_unix_resolves_symlinks'
~~~

This is the line where it fails:

http://bogomips.org/raindrops.git/tree/lib/raindrops/linux.rb#n57





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