YAML unable to load NSString

[ndnichols@…]

If you YAML.dump an immutable NSString (like the kind returned by an NSTextfield's -stringValue), you cannot YAML.load it. It fails with a "bind argument must be an instance of NSMutableString (TypeError)" error. You can YAML.dump a mutableCopy.

Attached is an rb_main.rb file that demonstrates this.

[ndnichols@…]

rb_main.rb that demonstrates the issue

[ndnichols@…]

Cc Me!

[lsansonetti@…]

It appears to work with trunk (at least as of r2945):

$ macruby -r yaml -e "p NSString.stringWithString('hey').class"
NSString
$ macruby -r yaml -e "p NSString.stringWithString('hey').to_yaml"
"--- hey\n"

#to_yaml on an immutable string returns a valid YAML description.