From: "phasis68 (Heesob Park)" <phasis@...>
Date: 2013-11-27T16:05:07+09:00
Subject: [ruby-core:58630] [ruby-trunk - Bug #9164] IO::foreach incorrect	work for binary file on windows platform


Issue #9164 has been updated by phasis68 (Heesob Park).


On Windows, "\x1A"(Control+Z) means end of file.
You must use binary read mode.

    p File.foreach('1.txt',mode:'rb').to_a => ["123\n", "\x1A\xE8\xBA\b\n", "789\n"]
----------------------------------------
Bug #9164: IO::foreach incorrect work for binary file on windows platform
https://bugs.ruby-lang.org/issues/9164#change-43199

Author: windwiny (wind winy)
Status: Open
Priority: Normal
Assignee: 
Category: 
Target version: 
ruby -v: 2.0.0p353,2.1.0dev
Backport: 1.9.3: UNKNOWN, 2.0.0: UNKNOWN



    d2 = "123\n".b + "\x1a\xe8\xba\b".b + "\n789\n".b
    
    File.binwrite('1.txt', d2)
    
    p File.binread('1.txt').each_line.to_a # => ["123\n", "\x1A\xE8\xBA\b\n", "789\n"]
    
    
    
    p File.foreach('1.txt').to_a           # => ["123\n"]
    
    Encoding.default_external = Encoding::UTF_8
    p File.foreach('1.txt').to_a           # => ["123\n"]
    
    Encoding.default_external = Encoding::ASCII_8BIT
    p File.foreach('1.txt').to_a           # => ["123\n"]



run above code on windows, File.foreach.to_a just return 1 row.
run on mac and linux, that's correct, return 3 rows.



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