YAML Bug - can't round-trip a hash value with leading newlines

YAML can’t round-trip the hash: {“default”=>"\r\n Monkey \r\nX"}.

Shouldn’t yaml use the escaped string format for any string that starts
with whitespace, ie,

yaml = “— \ndefault: “\r\n Monkey \r\nX””
p YAML.load(yaml)
=> {“default”=>"\r\n Monkey \r\nX"}

Below is a demonstration of this:

ruby <<-EOF
hash = {“default”=>"\r\n Monkey \r\nX"}
yaml = YAML.dump(hash)
p yaml
hash2 = YAML.load(yaml)
EOF
“— \ndefault: |-\n \r\n Monkey\r\n \r\n

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\n”
/usr/lib/ruby/1.8/yaml.rb:133:in load': syntax error on line 4, col 2: X’ (ArgumentError)
from /usr/lib/ruby/1.8/yaml.rb:133:in `load’
from -:4

ruby -v
ruby 1.8.7 (2010-06-23 patchlevel 299) [i686-linux]

Same bug exists in the jruby implementation as well.

On Mon, Aug 16, 2010 at 1:14 PM, Daniel S. [email protected]
wrote:

ruby -v
ruby 1.8.7 (2010-06-23 patchlevel 299) [i686-linux]
Same bug exists in the jruby implementation as well.

iianm, it fails for ruby ver below 1.9.2. it is fixed ruby1.9.2

[email protected]:~
$ for i in rvm list strings; do rvm $i; ruby -v -ryaml test.rb; done
ruby 1.8.6 (2010-02-05 patchlevel 399) [i686-linux]
“— \ndefault: |-\n \r\n Monkey \r\n X\n”
/disk2_2/home/botp/.rvm/rubies/ruby-1.8.6-p399/lib/ruby/1.8/yaml.rb:133:in
load': syntax error on line 4, col 2: X’ (ArgumentError)
from
/disk2_2/home/botp/.rvm/rubies/ruby-1.8.6-p399/lib/ruby/1.8/yaml.rb:133:in
load' from test.rb:4 ruby 1.8.7 (2009-06-12 patchlevel 174) [i686-linux] "--- \ndefault: |-\n \r\n Monkey \r\n X\n" /disk2_2/home/botp/.rvm/rubies/ruby-1.8.7-p174/lib/ruby/1.8/yaml.rb:133:inload’: syntax error on line 4, col 2: X' (ArgumentError) from /disk2_2/home/botp/.rvm/rubies/ruby-1.8.7-p174/lib/ruby/1.8/yaml.rb:133:inload’
from test.rb:4
ruby 1.8.7 (2010-06-23 patchlevel 299) [i686-linux]
“— \ndefault: |-\n \r\n Monkey \r\n X\n”
/disk2_2/home/botp/.rvm/rubies/ruby-1.8.7-p299/lib/ruby/1.8/yaml.rb:133:in
load': syntax error on line 4, col 2: X’ (ArgumentError)
from
/disk2_2/home/botp/.rvm/rubies/ruby-1.8.7-p299/lib/ruby/1.8/yaml.rb:133:in
load' from test.rb:4 ruby 1.9.1p378 (2010-01-10 revision 26273) [i686-linux] "--- \ndefault: |-\n \r\n Monkey \r\n X\n" /disk2_2/home/botp/.rvm/rubies/ruby-1.9.1-p378/lib/ruby/1.9.1/yaml.rb:133:inload’: syntax error on line 4, col 2: X' (ArgumentError) from /disk2_2/home/botp/.rvm/rubies/ruby-1.9.1-p378/lib/ruby/1.9.1/yaml.rb:133:inload’
from test.rb:4:in `’

ruby 1.9.2dev (2010-05-31 revision 28117) [i686-linux]
“— \ndefault: “\r\n Monkey \r\n\\n X”\n”
ruby 1.9.2dev (2010-07-02 revision 28524) [i686-linux]
“— \ndefault: “\r\n Monkey \r\n\\n X”\n”
ruby 1.9.2dev (2010-07-11 revision 28618) [i686-linux]
“— \ndefault: “\r\n Monkey \r\n\\n X”\n”

[email protected]:~

best regards -botp

Please file a bug if you could, at http://bugs.jruby.org :slight_smile:

On 8/15/10, Daniel S. [email protected] wrote:

    from -:4

ruby -v
ruby 1.8.7 (2010-06-23 patchlevel 299) [i686-linux]

Same bug exists in the jruby implementation as well.

This is bug #1311 in the ruby bug database:
http://redmine.ruby-lang.org/issues/show/1311

The patch for it did finally get accepted in 1.9.2.

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