540154 - Folder rename: Folder name case switching (capital/lower case) returns: Folder already exists

Status: VERIFIED DUPLICATE of bug 92165

(Thunderbird :: Folder and Message Lists, defect)

Description

[P. Harper]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; de; rv:1.9.1.7) Gecko/20091221 Firefox/3.5.7 (.NET CLR 3.5.30729)
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; de; rv:1.9.1.5) Gecko/20091204 Lightning/1.0b2pre Thunderbird/3.0

When trying to rename an existing folder and all I do is switch some letter's cases (for example, you try to rename from "WIki" to "Wiki" or from "John" to "john"), I get:
"Ein Ordner mit diesem Namen existiert bereits. Bitte geben Sie einen anderen Namen an.", in English: "A folder with this name already exists. Please choose a different name." (I don't know the exact wording in English). 

Reproducible: Always

Steps to Reproduce:
1. Create a folder with any name in "Lokale Ordner" ("Local folders"(?))
2. Right-click the folder and choose "Umbenennen" ("Rename")
3. Switch some letter's cases (e.g. from "EXample" to "Example")
4. Click "OK"
Actual Results:  
Got a window with the error message: "Ein Ordner mit diesem Namen existiert bereits. Bitte geben Sie einen anderen Namen an.", in English: "A folder with this name already exists. Please choose a different name." (I don't know the exact wording in English). 

Expected Results:  
The folder rename should work even if only a few cases are changed. 

Workaround: Choose an entirely different name, then rename to the desired name.

Comment 1

[rsx11m]

That's probably a Windows limitation. Their file system is case insensitive, thus EXample and Example are mapped to the same 8.3-style file name and a test for that file returns that it is existent already.

Comment 3

[Serge Gautherie (:sgautherie)]

V.Duplicate