d7c6cbc6bf
In #139438 we added three path template variables that get their values from user-specified names: - `scene_name` - `camera_name` - `node_name` These names can contain characters that are illegal in filenames on some systems, and also characters like "/" that would be interpreted as path separators in a filepath. This can lead to unexpected outcomes. For example, if a node's name is "Hue/Saturation" and the `{node_name}` variable is used in a path, it would result in a "Hue" directory which in turn contains a "Saturation" file. This is almost certainly not what the user intended, because the slash in that name is not semantically supposed to be a path separator. This PR addresses this problem by splitting string variables into two types: strings and filepaths. The contents of string variables are sanitized to be valid filenames when substituted into a path template, but the contents of filepath variables are left as-is. Variables such as `blend_name`, `blend_dir`, etc. that actually represent path components are then added as filepath variables, while variables such as `scene_name` that represent plain strings without path semantics are added as string variables. Pull Request: https://projects.blender.org/blender/blender/pulls/142679
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