attributes like "inkscape:label" lost with "Simplify"

[Thomas Holder]

Some path operations lose attributes, for example the object label (inkscape:label) and interactivity stuff (onclick, onload, ...). Likewise any attributes from third-party namespaces.

In particular the "Simplify" operation should keep any attribute that doesn't define any shape property (which will not be applicable after simplification).

Combine, Break Apart and boolean operations are also affected, but less trivial to solve, since two combined paths might have different labels. I'd suggest same solution as for style, so keep attributes from topmost path and discard attributes from other paths.

[jazzynico (jazzynico)]

Confirmed on Windows XP, Inkscape 0.46 and build 21236.
Also affected by Path>Object to path.

[su_v (suv-lp)]

Still present in Inkscape 0.47 and 0.47+devel r9495

related to (or duplicate of):
Bug #187449 “Keep path's custom informations after a boolean operation”

[Thomas Holder (speleo3)]

With Inkscape 0.48.0

* Boolean Operations:
  * Union/Difference/Intersection/Exclusion
    * keeps Title/Description
    * loses Label and Interactivity attributes
  * Division/Cut Path
    * loses everything

* Simplify:
  * keeps Title/Description
  * loses Label and Interactivity attributes

* Object To Path:
  * keeps Title/Description
  * loses Label and Interactivity attributes

* Combine/Break Apart:
  * loses everything

* Inset/Outset:
  * loses everything

[Beluga (buovjaga)]

Test documents would be cool.

[Thomas Holder (speleo3)]

https://gitlab.com/inkscape/inkscape/merge_requests/586