[Bug 18292] New: Make 8.3 names for LFNs more "Windows-like"

http://bugs.winehq.org/show_bug.cgi?id=18292

Summary: Make 8.3 names for LFNs more "Windows-like"
           Product: Wine
           Version: 1.1.20
          Platform: PC
               URL: http://source.winehq.org/source/dlls/kernel32/path.c
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P2
         Component: kernel32
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

When Windows creates 8.3 names for long file names, it does so in the form
Progra~1 and increments the number by one with each new creation of a similar
filename.

So,
Program Files --> Progra~1
Programmers --> Progra~2
Program Blah blah --> Progra~3
and so on.

Under Wine, the 8.3 filenames seem somewhat random (PROG~HAE for example).

Is it possible to implement this behaviour?

It would make it easier to guess short path names, which makes it easier to add
paths to the registry (when needed for workarounds, for example).

[Bug 18292] Make 8.3 names for LFNs more "Windows-like"

http://bugs.winehq.org/show_bug.cgi?id=18292

Ken Sharp  changed:

What    |Removed                     |Added
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           Keywords|                            |download, source

[Bug 18292] Make 8.3 names for LFNs more "Windows-like"

http://bugs.winehq.org/show_bug.cgi?id=18292

Alexander Scott-Johns  changed:

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                 CC|                            |alexander.scott.johns+winebu
                   |                            |[e-mail]

--- Comment #1 from Alexander Scott-Johns   2009-04-29 19:16:04 ---
(In reply to comment #0)
> When Windows creates 8.3 names for long file names, it does so in the form
> Progra~1 and increments the number by one with each new creation of a similar
> filename.

[...]

Microsoft has four patents related to long filenames on FAT, and recently tried
to sue TomTom over them. Maybe this is why it isn't implemented properly - the
Wine developers don't want to risk it.

The patents may not apply to ext partitions though.

* http://en.wikipedia.org/wiki/Short_file_names
* http://en.wikipedia.org/wiki/File_Allocation_Table#FAT_licensing
* http://en.wikipedia.org/wiki/TomTom#Patent_infringement_lawsuit
*
http://practical-tech.com/operating-system/deep-in-microsofts-tomtom-linux-p...
* http://blogs.zdnet.com/perlow/?p=9594

[Bug 18292] Make 8.3 names for LFNs more "Windows-like"

http://bugs.winehq.org/show_bug.cgi?id=18292

Vitaliy Margolen  changed:

What    |Removed                     |Added
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             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |WONTFIX

--- Comment #2 from Vitaliy Margolen   2009-04-29 22:15:28 ---
There are no reason to duplicate that. And as mentioned might own some patents
on that stuff.

[Bug 18292] Make 8.3 names for LFNs more "Windows-like"

http://bugs.winehq.org/show_bug.cgi?id=18292

Vitaliy Margolen  changed:

What    |Removed                     |Added
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             Status|RESOLVED                    |CLOSED

--- Comment #3 from Vitaliy Margolen   2009-04-29 22:17:13 ---
Closing

[Bug 18292] Make 8.3 names for LFNs more "Windows-like"

http://bugs.winehq.org/show_bug.cgi?id=18292

--- Comment #4 from Ken Sharp   2009-04-30 06:13:57 ---
I have already said there is a reason for duplicating it.
But it looks like Microshaft wins again.  God knows how that patent was
granted!

"TomTom paid Microsoft an undisclosed sum and will reduce functionality in its
products"
How nice for the end user.

It looks like the ~blah on Wine remains consistent anyway, so, in theory, any
workarounds using the short paths should work every time, unless something is
changed later.

I'm sure I'll find out soon enough.

[Bug 18292] Make 8.3 names for LFNs more "Windows-like"

http://bugs.winehq.org/show_bug.cgi?id=18292

--- Comment #5 from Alexandre Julliard   2009-04-30 16:32:13 ---
The reason is not the patents, the reason is that we can't store the short name
so we can't handle collisions. So we have to use a hash that makes collisions
unlikely.

[Bug 18292] Make 8.3 names for LFNs more "Windows-like"

http://bugs.winehq.org/show_bug.cgi?id=18292

Dmitry Timoshkov  changed:

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                 CC|                            |[e-mail]

--- Comment #6 from Dmitry Timoshkov  2011-03-14 23:57:18 CDT ---
*** Bug 26422 has been marked as a duplicate of this bug. ***

[Bug 18292] Make 8.3 names for LFNs more "Windows-like"

http://bugs.winehq.org/show_bug.cgi?id=18292

André H.  changed:

What    |Removed                     |Added
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             Blocks|                            |26423