Unintuitive natural sorting behavior

[UncraftedName]

Using v0.6.8 with ImGuiFileDialogFlags_NaturalSorting.

Issue 1: always put '..' first

I saw #118, but it's still very much a problem. Specifically:

• if you click on 'File name' so that the sorting is descending that makes '..' appear at the end
• '..' appears after numerical folders/files (when the sorting is ascending)

I see that '..' is passed to IGFD::Utils::NaturalCompare which leads to incorrect sorting behavior - there should be a special case for '..' somewhere.

Issue 2: incorrect behavior for numerical values separate by '.'

The '.' character should not be parsed in M_ExtractNumFromStringAtPos.

In this case the last part of the file name is ignored:

In this case the second part of the file name is not correctly sorted:

Issue 3: only one file has an additional suffix before the extension

This one is a less significant issue than the others - it's based off of how I see files in windows. I understand that the natural sorting is not necessarily made to copy the behavior of windows.

Here is a collection of files sorted in windows:

The same files when viewed in ImGuiFileDialog:

[aiekick]

Hello,
thanks for your feedback.
This sorting is indeed byggy.
Btw i have not any time to solve it.
Can you help py propose a PR ?

[UncraftedName]

I can't promise to make a PR, but I may take a look later. It looks like there are tests in the demo app - are there instructions for setting that up? I'm slowly figuring it out but still having some trouble with the details.