Issue #9944 has been reported by Dmitry Bolshakov.

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Bug #9944: in ruby for windows in "system" a redirection to append a file works incorrectly
https://bugs.ruby-lang.org/issues/9944

* Author: Dmitry Bolshakov
* Status: Open
* Priority: Normal
* Assignee: 
* Category: 
* Target version: 
* ruby -v: ruby 2.0.0p481 (2014-05-08) [i386-mingw32]
* Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN
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c:\Users\bdimych>
c:\Users\bdimych>
c:\Users\bdimych>
c:\Users\bdimych>
c:\Users\bdimych>C:\Ruby200\bin\ruby.exe -v
ruby 2.0.0p481 (2014-05-08) [i386-mingw32]

c:\Users\bdimych>
c:\Users\bdimych>
c:\Users\bdimych>
c:\Users\bdimych>( echo first line & echo second line & echo third line ) > test.txt

c:\Users\bdimych>
c:\Users\bdimych>
c:\Users\bdimych>type test.txt
first line
second line
third line

c:\Users\bdimych>
c:\Users\bdimych>
c:\Users\bdimych>
c:\Users\bdimych>C:\Ruby200\bin\ruby.exe -e "system 'cmd', '/c', 'echo', 'blabla', :out => ['test.txt', 'a']"

c:\Users\bdimych>
c:\Users\bdimych>
c:\Users\bdimych>type test.txt
blabla
ne
second line
third line

c:\Users\bdimych>
c:\Users\bdimych>
c:\Users\bdimych>
c:\Users\bdimych>
c:\Users\bdimych>

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ruby writes "blabla" in the beginning instead of appending

windows 7 64




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