Guide id and locked properties are not preserved

[user202729]

Problem

Do the following:

• Open an empty canvas.
• Draw a rectangle.
• Open the plugin and execute something harmless like print(1).
• Press undo in Inkscape.
• See the rectangle deleted.

However,

• Open an empty canvas.
• Create a guide.
• Open the plugin and execute something harmless like print(1).
• Press undo in Inkscape.
• The guide is not deleted.
• Press undo again. Now the guide is deleted.

The problem is that, even though print(1) does not change anything of the canvas, Inkscape register it as a change.

This is because the method

    @classmethod
    def _from_inkex_object(self, iobj):
        '''Create a Simple Inkscape Scripting SimpleGuide from an inkex
        Guide object.'''

does not store the original iobj, rather, it creates a new object with a new id, so that Inkscape thinks that something changed.

[spakin]

Thanks for the bug report and for tracking down the source of the problem. In a moment I'll upload a version of the code that uses the original iobj instead of creating a new one.