[ruby-core:70706] [Ruby trunk - Bug #11519] "#{nil}" produces string as US-ASCII rather than current encoding

Issue #11519 has been updated by Perry Smith.


Nobuyoshi Nakada wrote:
> What's and why wrong?

=E2=80=9C#{bar}=E2=80=9D.encoding !=3D =E2=80=98UTF-8=E2=80=99 and =E2=80=
=9C#{bar}#{foo}=E2=80=9D.encoding !=3D =E2=80=98UTF-8=E2=80=99 despite foo =
being UTF-8 and the encoding of the source file and hence the =E2=80=9C =E2=
=80=A6 =E2=80=9C string within the source file being UTF-8.

----------------------------------------
Bug #11519: "#{nil}" produces string as US-ASCII rather than current encodi=
ng
https://bugs.ruby-lang.org/issues/11519#change-54095

* Author: Perry Smith
* Status: Feedback
* Priority: Normal
* Assignee:=20
* ruby -v: ruby 2.2.3p173 (2015-08-18 revision 51636) [x86_64-darwin14]
* Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN
----------------------------------------
~~~ruby
#! /usr/bin/env ruby
# encoding: utf-8

puts "Ruby version: #{RUBY_VERSION}"
puts "__ENCODING__ =3D #{__ENCODING__}"
puts "hello".encoding
foo =3D "hello"
puts "#{foo}".encoding
puts "#{"hello"}".encoding
bar =3D nil
puts "#{bar}".encoding
puts "#{nil}".encoding
puts "#{bar}#{foo}".encoding
~~~

The output for this on all versions of ruby that I have except 1.9.1 is thi=
s:

~~~
Ruby version: 2.2.3
__ENCODING__ =3D UTF-8
UTF-8
UTF-8
UTF-8
US-ASCII
US-ASCII
US-ASCII
~~~

It is the last part that gave me grief.  Rails `content_for` used such a co=
nstruct so all my content was being converted to US-ASCII and sometimes wer=
e error off.

It seems to me the `"#{ ... }"` string should be utf-8 and so anything inse=
rted into it should be converted to utf-8 so `"#{nil}"` should be utf-8 -- =
not US-ASCII.




--=20
https://bugs.ruby-lang.org/