tag_list_changed bounces between array or string inconsistently.

[alexQueue]

This is causing problems with an audit logger we're using that uses the attribute_was and attribute_changed methods, which keep on changing even though nothing happens.
Seems to be due to changed_attributes storing the tag list as a string instead of an array

user.tag_list
=> ["d",  "c", "b", "a"]
user.tag_list_was
=> ["d",  "c", "b", "a"]
user.tag_list = user.tag_list.sort
user.tag_list_changed?
=> true
user.tag_list_change
=>["d, c, b, a",['a','b','c','d']]
user.tag_list_was
=>"d, c, b, a"
user.save
...
user.tag_list
=>['a', 'b', 'c', 'd']

This also causes problems where a simple change of order causes the attributes to update, but I'm not sure if that is an issue or a feature since someone may depend on ordered tags.

[alexQueue]

This is caused by https://github.com/mbleigh/acts-as-taggable-on/blob/master/lib/acts_as_taggable_on/taggable/core.rb#L332-333

[seuros]

It not a feature that since it make no sense and this is not Microsoft.
I will look into it.

[seuros]

Sorry for delay, i had something else to do.
Could you try https://github.com/seuros/acts-as-taggable-on/tree/dirtyorder ?

[alexQueue]

Seems to have fixed it. Thanks!

[seuros]

You can use rubygem now.