The latest version of the extension (comment #10) appears to work as you planned it (comment #9).
Just a quick observation: when exporting an empty document, an empty "Drawing.xcf" (size 0B) is still created even though the warning message appears as planned. Is this behaviour intentional?
Oops... that should have read as follows:
The latest version of the extension (comment #10) appears to work as you planned it (comment #9).
Just a quick observation: when exporting an empty document, an empty "Drawing.xcf" (size 0B) is still created even though the warning message appears as planned. Is this behaviour intentional?