As it's probably unintuitive (user can't see the linked model in viewport but we still load it) and user then have no option to keep model in Links but keep it unloaded.
Also producing traceback below if linked file is missing.
```
Error: Python: Traceback (most recent call last):
File "\bonsai\bim\module\drawing\operator.py", line 299, in execute
linework_svg = self.generate_linework(context)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "\bonsai\bim\module\drawing\operator.py", line 828, in generate_linework
IfcStore.session_files[link.name] = ifcopenshell.open(link.name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "\ifcopenshell\__init__.py", line 162, in open
raise FileNotFoundError(f"File does not exist: '{path}'.")
FileNotFoundError: File does not exist: 'D:\Dropbox\GitLab\OD_Library\BIM\OD_Revit_Template - 2020 - IFC4 - Reference View.ifc'.
```
Currently teh parameters that have spaces are not properly parsed when invoking os.execv.
Ej:
We start blender with some parameters and then invoke bim.restart_blender:
C:\Users\falke>c:\Users\falke\Documents\blender-4.2.8-windows-x64\blender.exe --debug --python-expr "import bpy; bpy.ops.bim.load_project(filepath='C:/Users/falke/Documents/bonsaiDevel/Testing.ifc', should_start_fresh_session=True, use_detailed_tooltip=True)"
TBBmalloc: skip allocation functions replacement in ucrtbase.dll: unknown prologue for function _msize
Switching to fully guarded memory allocator.
Blender 4.2.8 LTS
Build: 2025-03-18 01:34:37 Windows Release
argv[0] = c:\Users\falke\Documents\blender-4.2.8-windows-x64\blender.exe
argv[1] = --debug
argv[2] = --python-expr
argv[3] = import bpy; bpy.ops.bim.load_project(filepath='C:/Users/falke/Documents/bonsaiDevel/Testing.ifc', should_start_fresh_session=True, use_detailed_tooltip=True)
Starting import process :: 0.00
Loading file :: 0.00
Calculate unit scale :: 0.00
Process context filter :: 0.01
Calculate model offset :: 0.00
Set units :: 0.00
Create project :: 0.00
Process element filter :: 0.00
Create styles :: 0.00
Parsing native elements :: 0.00
Done creating geometry
Create native elements :: 0.00
Done creating geometry
Create elements :: 0.03
Create annotations :: 0.00
Create positioning elements :: 0.00
0 / 3 elements processed ...
Create spatial elements :: 0.00
Create structural items :: 0.00
Create element types :: 0.00
Place objects in collections :: 0.00
Setup arrays :: 0.00
Load linked models :: 0.00
Add project to scene :: 0.00
Setting default context :: 0.01
Import finished in 0.06 seconds
No MySQL support
Writing userprefs: "C:\Users\falke\AppData\Roaming\Blender Foundation\Blender\4.2\config\userpref.blend" ok
Info: Preferences saved
TBBmalloc: skip allocation functions replacement in ucrtbase.dll: unknown prologue for function _msize
Switching to fully guarded memory allocator.
Blender 4.2.8 LTS
Build: 2025-03-18 01:34:37 Windows Release
argv[0] = c:\Users\falke\Documents\blender-4.2.8-windows-x64\blender.exe
argv[1] = --debug
argv[2] = --python-expr
argv[3] = import
argv[4] = bpy;
argv[5] = bpy.ops.bim.load_project(filepath='C:/Users/falke/Documents/bonsaiDevel/Testing.ifc',
argv[6] = should_start_fresh_session=True,
argv[7] = use_detailed_tooltip=True)
C:\Users\falke> File "<string>", line 1
import
^
SyntaxError: invalid syntax
Error: Cannot read file "C:\Users\falke\bpy;": No such file or directory
Error: argument has no '.blend' file extension, not using as new file, exiting! C:\Users\falke\bpy;
Blender quit
By adding the proposed list2cmdline based solution, the commandline is properly formated before invoking os.execv
Thanks!
Just found that all scroll bars for UIList kept in sync using `list_id` - it's that second argument for `UILayout.template_list` that I forgot exist, since I've never seen set it to anything besides the empty string.
So in #6439 we were reusing same UIList for multiple collection props and since one of the props was empty, it was constantly resetting scroll bar position.
Was about to report it as a bug to Blender but stumbled upon similar issue https://projects.blender.org/blender/blender/issues/124364
So the solution is make sure each UIList has unique `list_id`.
Fyi @Moult @Gorgious56
Andrej730
