Icon set description names bug

Thinking about integrating an editable list into the iconset maker app, for adding description names and categories.
When adding a description, they appear like this

copyit = internal name 
foo     = description

whereas inbuilt sets appear as you would expect

Here is the line of XML that is being used
xmlArray.push('<icon name="' + pngArray[i] + '"\t display_name="foo"' + '\t category="foo"' + '\t row="' + row +'" col="' + col + '" />');

seems to be okay, not sure why the internal name is in brackets after the description name ?

Not sure I understand the description of what's happening.

An example icon set would be good here.

There is an example iconset here Another iconset description bug

The issue is - why is there a name in brackets (parentheses) automatically added after the description name?

Thanks! That was a bug; the display name was being modified by our icon-set-caching mechanism, resulting in the duplication.

It has been fixed for the next beta.