Bug #9431: In windows ruby IO.write returns count of bytes without count of CR character

• Status: Rejected
• Priority: Normal
• Assignee: -
• Target version: -
• ruby -v: ruby 2.0.0p247 (2013-06-27) [i386-mingw32]
• Tags: core, win, maybenotbug

[bdimych (Dmitry Bolshakov)]

C:\Users\bdimych>ruby -e "p IO.write('temp.txt', %Q(123\n)); p File.size('temp.txt')"
4
5

imho it looks unexpected

[mame (Yusuke Endoh)]

• Status changed from Open to Rejected
• Backport deleted (1.9.3: UNKNOWN, 2.0.0: UNKNOWN, 2.1: UNKNOWN)

I believe this is a spec of Windows. Ruby's IO interface is based on C's stdio, and I confirmed that fwrite("Hello\n", 1, 6, fp) returns 6 and actually outputs 7 bytes on Windows with cl.exe.