format_str in Item() affects subsequent Item()s in UI

hi,
Using the format_str in an Item() definition to format the string 
presentation, such as here:
Item( 'string_trait', style = 'text',     label = 'Text', format_str = 
"%.6s" ),

causes the Item() to have the format applied, but also every subsequent 
Str trait is affected by this format_str.

I don't know if that is the intent, but it doesn't seem right.

here's an example (based on texteditor demo):

from enthought.traits.api \
    import HasTraits, Str, Int, Password

from enthought.traits.ui.api \
    import Item, Group, View

# The main demo class:
class TextEditorDemo ( HasTraits ):
    """ Defines the TextEditor demo class.
    """

    # Define a trait for each of three TextEditor variants:
    string_trait = Str( "sample string" )
    another_string_trait = Str( "more than 6 characters" )

    # TextEditor display with multi-line capability (for various traits):
    text_str_group = Group(
        Item( 'string_trait', style = 'simple',  label = 'Simple' ),
        Item( '_' ),
        Item( 'string_trait', style = 'text',     label = 'Text', 
format_str = "%.6s" ),
        Item( '_' ),
        Item( 'string_trait', style = 'readonly', label = 'ReadOnly' ),
        Item( '_' ),
        Item( '_' ),
        Item( 'another_string_trait', style = 'simple',  label = 
'Simple' ),
        Item( '_' ),
        Item( 'another_string_trait', style = 'text',     label = 'Text' ),
        Item( '_' ),
        Item( 'another_string_trait', style = 'readonly', label = 
'ReadOnly' ),
        label = 'String'
    )

    # The view includes one group per data type. These will be displayed
    # on separate tabbed panels:
    view = View(
        text_str_group,
        title   = 'TextEditor',
        buttons = [ 'OK' ]
    )

# Create the demo:
demo =  TextEditorDemo()

# Run the demo (if invoked from the command line):
if __name__ == "__main__":
    demo.configure_traits()

Thanks

--

-- 
Chris Kennedy                  
Apex, NC  
http://www.quickactiondrumlug.com
http://www.thinkpeak.com