Repository: vscode
Issue: Some Unicode characters collide in VS Code Explorer view but not on file system
Labels: bug,file-explorer,windows


Issue Type: <b>Bug</b>

Directory names with the Kelvin character (`U+212A`) collide with directory names with the lowercase K character (`k`). In my view, the directory with the Kelvin character is visible in the Explorer view but the lowercase version is completely hidden.

If you add a suffix to differentiate the two folder names (e.g. `_1` and `_2` suffixes), then both are visible.
![image](https://user-images.githubusercontent.com/94054/154572995-0e404f88-bd7a-46e2-84da-19cd6fad2979.png)

Here is a directory that reproduces the issue:
[repro.zip](https://github.com/microsoft/vscode/files/8092281/repro.zip)

![image](https://user-images.githubusercontent.com/94054/154572779-fc1ecd64-8e16-4535-a9ea-867489705145.png)

Here is the directory listing according to `cmd /b /s` (which aligns with the Windows File Explorer view)
```
C:\Users\jver\Desktop\repro>dir /b /s
C:\Users\jver\Desktop\repro\jver.unicodeid_k
C:\Users\jver\Desktop\repro\jver.unicodeid_K
C:\Users\jver\Desktop\repro\jver.unicodeid_k\1.0.1
C:\Users\jver\Desktop\repro\jver.unicodeid_k\1.0.1\a8cc126a2e63461391df462e5df7bc41-delete.audit.v1.json
C:\Users\jver\Desktop\repro\jver.unicodeid_K\1.0.1
C:\Users\jver\Desktop\repro\jver.unicodeid_K\1.0.1\a7f051038e6a4fa8ab98230e28358566-delete.audit.v1.json
C:\Users\jver\Desktop\repro\jver.unicodeid_K\1.0.1\c7d063ae2b694ee1b2688f686c004ee6-delete.audit.v1.json
```

VS Code version: Code 1.64.2 (f80445acd5a3dadef24aa209168452a3d97cc326, 2022-02-09T22:02:28.252Z)
OS version: Windows_NT x64 10.0.19044
Restricted Mode: No

<details>
<summary>System Info</summary>

|Item|Value|
|---|---|
|CPUs|Intel(R) Core(TM) i7-1065G7 CPU @ 1.30GHz (8 x 1498)|
|GPU Status|2d_canvas: enabled<br>gpu_compositing: enabled<br>multiple_raster_threads: enabled_on<br>oop_rasterization: enabled<br>opengl: enabled_on<br>rasterization: enabled<br>skia_renderer: enabled_on<br>video_decode: enabled<br>vulkan: disabled_off<br>webgl: enabled<br>webgl2: enabled|
|Load (avg)|undefined|
|Memory (System)|31.59GB (12.71GB free)|
|Process Argv|--crash-reporter-id 5c61dcbd-4404-4c75-9218-185c0f15b0b0|
|Screen Reader|no|
|VM|0%|
</details><details><summary>Extensions (3)</summary>

Extension|Author (truncated)|Version
---|---|---
vscode-bicep|ms-|0.4.1272
vscode-dotnet-runtime|ms-|1.5.0
gremlins|nho|0.26.0


</details><details>
<summary>A/B Experiments</summary>

```
vsliv368cf:30146710
vsreu685:30147344
python383:30185418
vspor879:30202332
vspor708:30202333
vspor363:30204092
vswsl492cf:30256860
pythonvspyl392cf:30425750
pythontb:30283811
pythonptprofiler:30281270
vshan820:30294714
vstes263cf:30335440
pythondataviewer:30285071
vscod805cf:30301675
pythonvspyt200:30340761
binariesv615:30325510
bridge0708:30335490
bridge0723:30353136
vsaa593:30376534
vsc1dst:30438360
pythonvs932:30410667
wslgetstarted:30433507
vsclayoutctrc:30437038
vsrem710:30416614
vscop841:30438915
dsvsc008:30440022
vsbas813:30436447
vscscmwlcmt:30438805
vscgsvid1:30438799
helix:30438806

```

</details>

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