From: Yui NARUSE <naruse@...>
Date: 2012-01-08T20:25:51+09:00
Subject: [ruby-core:41986] [ruby-trunk - Bug #5862] Strings not encoded in -E encoding


Issue #5862 has been updated by Yui NARUSE.


When we design the system, -e is used through a console (terminal emulator).
So -e follows the consoles's encoding, and it is assumed to be the locale encoding.
So -E doesn't effect.

-K intends for compatibility.
It effects all encodings except default internal.
----------------------------------------
Bug #5862: Strings not encoded in -E encoding
https://bugs.ruby-lang.org/issues/5862

Author: Brian Ford
Status: Rejected
Priority: Normal
Assignee: 
Category: M17N
Target version: 
ruby -v: ruby 1.9.3p0 (2011-10-30 revision 33570) [x86_64-darwin10.8.0]


If I pass the -E option, the Encoding.default_external is set to that encoding, but the string in the -e code is not set to that encoding, nor is the value of __ENCODING__ set to it.

$ ruby -v -E ascii-8bit -e 'p "abc".encoding, Encoding.default_external, Encoding.default_internal, __ENCODING__'
ruby 1.9.3p0 (2011-10-30 revision 33570) [x86_64-darwin10.8.0]
#<Encoding:UTF-8>
#<Encoding:ASCII-8BIT>
nil
#<Encoding:UTF-8>

However, if I pass -Ka, the encodings for all of 1. Encoding.default_external, 2. the -e string literal, and 3. __ENCODING__ in -e code are set to eg ASCII-8BIT.

$ ruby -v -Ka -e 'p "abc".encoding, Encoding.default_external, Encoding.default_internal, __ENCODING__'
ruby 1.9.3p0 (2011-10-30 revision 33570) [x86_64-darwin10.8.0]
#<Encoding:ASCII-8BIT>
#<Encoding:ASCII-8BIT>
nil
#<Encoding:ASCII-8BIT>

If -E {enc} sets Encoding.default_external to {enc} and data read from IO streams is set to encoding Encoding.default_external, and STDIO is an IO stream, shouldn't passing -E {enc} cause the -e string literal to have encoding {enc}? If not, could someone please explain the exact semantics of these two different command line options.

Thanks,
Brian


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