From: rubikitch@...
Date: 2008-01-31T01:25:30+09:00
Subject: [ruby-dev:33540] File.read(filename, :encoding => "Shift_JIS:EUC-JP")

るびきちです。

File.read / File.readlinesで :encoding => "enc1:enc2"と指定できると
open との整合性が取れると思います。

Encoding.default_external       # => #<Encoding:EUC-JP>
open("sjis.txt", "r:Shift_JIS:EUC-JP"){|f| f.read } # => "日本語\n"
File.open("sjis.txt", "r:Shift_JIS:EUC-JP"){|f| f.read } # => "日本語\n"
s = File.read("sjis.txt", :encoding => "Shift_JIS:EUC-JP") # => "日本語\n"
s.encoding                      # => #<Encoding:EUC-JP>
s = File.readlines("sjis.txt", :encoding => "Shift_JIS:EUC-JP") # => ["日本語\n"]

Index: io.c
===================================================================
--- io.c	(revision 15347)
+++ io.c	(working copy)
@@ -5853,7 +5853,7 @@
 
 	arg->io = rb_io_open(RSTRING_PTR(argv[0]), "r");
 	GetOpenFile(arg->io, fptr);
-	fptr->enc = rb_to_encoding(v);
+        mode_enc(fptr, StringValueCStr(v));
 	return;
     }
 }

--
rubikitch
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