[7.56a] Warning for long file name is wrong

[white]

Create a file in the root of a drive named:

Code: Select all

12345678901234567890...123456789012345

(file name length = 255)

Now, select the file and press Shift+F5 to copy the file to the same folder. Add "6" after the file name. Total Commander does not display a warning but tries to copy the file which fails. Cancel the operation.

Now, again select the file and press Shift+F5 to copy the file to the same folder. Add "67" after the file name. Total Commander does display a warning saying the target name length is 260 (which is correct) and that the last part of the file name is 258 characters long. The last part of the file name is however 257 characters long and not 258! Moreover Total Commander reports the maximum file length is 256. However trying to create a file with a name length of 256 fails. Also according to wikipedia page about NFTS the maximum file length is 255.

Tested using Windows XP on a FAT32 drive and a NFTS drive.

[petermad]

Confirmed - also using Windows XP on a FAT32 drive and a NFTS drive.

[ghisler(Author)]

This is a Windows limit, not a Total Commander limit. You can't do this in Explorer either. The individual name parts of a path cannot be longer than 255 characters, so all TC can do is show a rename error.

[white]

This is a Windows limit, not a Total Commander limit. You can't do this in Explorer either. The individual name parts of a path cannot be longer than 255 characters, so all TC can do is show a rename error.

Please reread. Total Commander thinks the limit is at 256 characters which isn't a Windows limit nor a limit of Total Commander. Also, Total Commander is reporting the wrong length for the last part of the file name.

[ghisler(Author)]

It seems that you are confusing some things here. The 255 character limit is not for the entire name, it's for individual name parts! See e.g.
http://www.ntfs.com/ntfs_vs_fat.htm

So if you have c:\path1\path2\name1

each of "path1", "path2" and "name1" cannot be longer than 255 characters.

[white]

It seems that you are confusing some things here. The 255 character limit is not for the entire name, it's for individual name parts! See e.g.
http://www.ntfs.com/ntfs_vs_fat.htm

So if you have c:\path1\path2\name1

each of "path1", "path2" and "name1" cannot be longer than 255 characters.

Exactly. But Total Commander says the size can be 1 character longer!
Moreover if name1 is 257 characters, Total Commander says it's 258 characters.

[petermad]

2ghisler(Author)

You must read the first post more carefully White is right as far as I can see.

[ghisler(Author)]

Total Commander only warns when the total path length (including drive letter any any subdirs) becomes longer than 259 characters, because that's the maximum most Windows program can handle. Total Commander does NOT warn when individual name parts become longer than 255 characters, because it couldn't be used even if the user would want to allow it! Therefore all TC can do is let the operation fail.

[white]

Total Commander does NOT warn when individual name parts become longer than 255 characters..

So that's by design. Then, two bugs remain. One is saying the maximum length of the last part is 256 characters. And the other is saying the last part is 1 character longer than it actually is.

[ghisler(Author)]

Sorry, TC calculates the last path including the last backslash, that's why you get 258 and 256 instead of 257 and 255.