[1.9] String#lines with default $/ divides strings incorrectly
--------------------------------------------------------------
Key: JRUBY-4562
URL: http://jira.codehaus.org/browse/JRUBY-4562
Project: JRuby
Issue Type: Bug
Components: Core Classes/Modules
Affects Versions: JRuby 1.5
Environment: Linux 2.6.31-19
Reporter: Tomo Kazahaya
In 1.9 compatible mode, if the default object of {{$/}} is used,
{{String#lines}} divides string objects incorrectly -- successive LFs are
concatenated to the top of next chunk. This problem does not happen when in 1.8
compatible mode.
{noformat}
--
# sample.rb
p <<EOS.lines.to_a
multi-line string with
two or more LFs
in a row
EOS
--
$ ruby1.8 -v sample.rb
ruby 1.8.7 (2009-06-12 patchlevel 174) [i486-linux]
["multi-line string with\n", "two or more LFs\n", "\n", "\n", "in a row\n"]
$ ruby -v sample.rb
ruby 1.9.2dev (2010-02-12 trunk 26649) [i686-linux]
["multi-line string with\n", "two or more LFs\n", "\n", "\n", "in a row\n"]
$ jruby -v sample.rb
jruby 1.5.0.dev (ruby 1.8.7 patchlevel 174) (2010-02-15 2770c7f) (Java
HotSpot(TM) Client VM 1.6.0_15) [i386-java]
["multi-line string with\n", "two or more LFs\n", "\n", "\n", "in a row\n"]
$ jruby --1.9 -v sample.rb
jruby 1.5.0.dev (ruby 1.9.2dev trunk 24787) (2010-02-15 2770c7f) (Java
HotSpot(TM) Client VM 1.6.0_15) [i386-java]
["multi-line string with\n", "two or more LFs\n", "\n\nin a row\n"]
{noformat}
However, if {{"\n"}} is reassigned to {{$/}}, this problem will not occur.
{noformat}
--
# sample.rb
$/ = "\n" # reassign to $/
p <<EOS.lines.to_a
:
:
--
$ jruby --1.9 -v sample.rb
jruby 1.5.0.dev (ruby 1.9.2dev trunk 24787) (2010-02-15 2770c7f) (Java
HotSpot(TM) Client VM 1.6.0_15) [i386-java]
["multi-line string with\n", "two or more LFs\n", "\n", "\n", "in a row\n"]
{noformat}
--
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