Hi there,

I am a fond user of FreeCAD but today I finally found myself in need for Clip Groups in the TechDraw workbench. However, that did not end like I expected. After some digging the interwebs I figure it is indeed a bug.

Steps to recreate

• create a fresh FreeCAD project
• switch to TechDraw workbench
• click the Insert Default Page button on the toolbar
• select the newly created Page in the tree view
• click the Insert Clip Group button on the toolbar

Result

and the report view as well as console output shows an error message:

23:38:06  App.getDocument('Unnamed').getObject('Page').addView(App.getDocument('Unnamed').getObject('Page')))
23:38:06  <class 'SyntaxError'>: ("unmatched ')'", ('<string>', 1, 99, "App.getDocument('Unnamed').getObject('Page').addView(App.getDocument('Unnamed').getObject('Page')))", 1, 99))

then, when trying to add a View to the Clip Group, the command fails and explains that the View and the Clip Group are not part of the same Page - which is a absolutely correct.

All in all, I could not get any clip group to work as it should.

Expected Result
The Clip Group should appear as a child of the Page object with no error.

Severity
Others seem to have the issue as well. I figure that the bug does not show as often because of all Linkstage users, a whole lot of them might just not use the feature, just as I only found myself in need for the feature and I have been using FreeCAD for years.

https://forum.freecad.org/viewtopic.php?t=58801

My System
OS: Arch Linux (GNOME/gnome-xorg)
Word size of FreeCAD: 64-bit
Version: 0.20.31606 (Git)
Build type: Release
Branch: makepkg
Hash: 853a80f
Python version: 3.10.9
Qt version: 5.15.8
Coin version: 4.0.1
OCC version: 7.6.3
Locale: English/United States (en_US)

Closing
Let me know if I can be of any help. Maybe a hint to the code that might cause that - I might craft up a PR if I manage to solve the issue...

Thanks!