If you have a mirror feature and set the mirror plane with the normal feature editing the recompute works. But if the mirror plane is set with the property editor then the recompute fails with the message that no mirror plane reference is set.
This is related to a an empty sub-name list of the link property instead of a single and empty sub-name element.
This PR allows to specify a sketch, plane or datum plane without a sub-name.
For more details see: https://forum.freecad.org/viewtopic.php?t=86568
This fixes#13238
Used when finding subelements of a feature. Many of the comparisons used to also
check for string lengths, but as far as I can tell they are not strictly
necessary (see https://www.cplusplus.com/reference/string/string/substr/) and
just `substr` can be used without them. However, `compare` explicitly is for
comparing, and does not make a new object that `substr` does.
- Rebase App::Origin on App::DocumentObject
- Keep all control over the Origin structure inside the Origin and it's
ViewProvider
- Add OriginFeature class as common base for App::Plane and App::Line
- Rebase App::Plane and App::Line on top of newly created class and
move to the file.
- Change Origin's ViewProvider API associated with temporary display
- Lots of associated changes to files
- Several minor fixes
- Lots of new bugs
- remove StdDirection,StdAxis and StdMirrorPlane properties
- support sketch H_Axis, V_Axis, N_axis as valid references in patterns
- polish reference selection gui (unified for standard axes and custom references)
