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Date: Fri, 14 Apr 2023 21:00:25 +0200
From: Corinna Vinschen <corinna-cygwin@cygwin.com>
To: Gionatan Danti <g.danti@assyoma.it>
Cc: cygwin@cygwin.com
Subject: Re: Can not stat file with utf char U+F020
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On Apr 14 19:53, Gionatan Danti via Cygwin wrote:
> Dear list,
> I have an issue with unreadable files with contain utf char U+F020 (which
> appear as "middle dot with some space after") in their name.
> 
> stat on such a file results in "no such file or directory"
> 
> From here [1] it seems that a patch was contemplated many years ago, but I
> don't know its status now.
> 
> Any ideas or workaround?

There's no (good) solution from inside Cygwin.

Keep in mind that the Unicode area from U+E000 up to U+F8FF is called
"Private Use Area".  So none of the chars are mapped into any
singlebyte, doublebyte, or multibyte charset.  Typically we don't expect
that filenames contain any of these chars, and we're only using a very
small subset of them for our own, dubious purposes anyway:

https://cygwin.com/cygwin-ug-net/using-specialnames.html#pathnames-specialchars

> [1] https://sourceware.org/legacy-ml/cygwin/2009-11/msg00043.html

While this patch would have fixed your problem, a later followup patch
broke your usage of U+F020 (space replacement) and, FWIW, of U+F02E
(dot replacement) again:

https://cygwin.com/cgit/newlib-cygwin/commit/?id=8802178fddfd

This was done to accomodate filesystems implementing the idiotic
approach to support only DOS filenames, i. e., not allowing leading or
trailing spaces and not allowing trailing dots.  These are Netapp and
Novell Netware filesystems.  See the last paragraph of

https://cygwin.com/cygwin-ug-net/using-specialnames.html#pathnames-specialchars

Any chance you can just rename the files?


Corinna