From: Tero Tilus <redmine@...>
Date: 2009-02-25T18:37:52+09:00
Subject: [ruby-core:22463] [Bug #1207] Readline#readline mangles input

Bug #1207: Readline#readline mangles input
http://redmine.ruby-lang.org/issues/show/1207

Author: Tero Tilus
Status: Open, Priority: Normal
ruby -v: ruby 1.8.5 (2006-08-25) [i486-linux]

My irb eats every 511'th character of pasted data.  I've narrowed the issue down to readline lib Ruby uses.

class MyReadline
  include Readline

  def rl(*args)
    readline(*args)
  end
end

r = MyReadline.new

puts r.rl.length
# paste 100 chars 6 times
# => 600

puts r.rl.length
# paste 600 chars
# => 599

# Pasted 600 chars looks like this on my term.  
# Notice missing "1", which should have been 511'th char (11'th of the last 100 char sequence).
# Pasted string is (("1234567890"*10).chop+' ')*6
#   i.e. sequentially repeated numbers and every 100'th is space
123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789 123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789 123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789 123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789 123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789 12345678902345678901234567890123456789012345678901234567890123456789012345678901234567890123456789 

I'm on Debian etch with ruby1.8 (1.8.5-4etch4) and libreadline-ruby1.8 (1.8.5-4etch4) installed.

$ uname -a
Linux naakka 2.6.18-6-686 #1 SMP Sat Dec 27 09:31:05 UTC 2008 i686 GNU/Linux
$ ruby --version
ruby 1.8.5 (2006-08-25) [i486-linux]
$ irb --version
irb 0.9.5(05/04/13)
$ gem -v readline
1.2.0

Issue is imo likely to be same/related to http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=498277


----------------------------------------
http://redmine.ruby-lang.org