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Groups > comp.arch.embedded > #18871
| From | Don Y <this@is.not.me.com> |
|---|---|
| Newsgroups | comp.arch.embedded |
| Subject | Re: Filesystem syntax constraints under Windows |
| Date | 2014-10-21 15:38 -0700 |
| Organization | Aioe.org NNTP Server |
| Message-ID | <m26n8n$hr$1@speranza.aioe.org> (permalink) |
| References | <m18295$e3o$1@speranza.aioe.org> <m199ak.ao.1@stefan.msgid.phost.de> <m23e85$3jn$1@speranza.aioe.org> <m269oc.b0.1@stefan.msgid.phost.de> |
On 10/21/2014 9:47 AM, Stefan Reuther wrote:
> Don Y wrote:
>> C:\SfU\XXX> ls
>> A'a A:a AAA A`a B?b C*c aaa
>>
>> It doesn't seem possible to embed redirection operators
>> in filenames regardless of quoting. (e.g., A>a, A<a, A|a)
>> This differs from UN*X shells. This suggests those operators
>> are processed early in Interix's shell -- before quoting!
>>
>> Note that Windows Explorer lists these file names as above
>> with the exception that the ':' and '?' characters are presented
>> as a box and "C*c" appears as "Cc".
>
> This seems to me like it is using some Unicode character which looks
> like ":" or "?" when displayed on the console, but is actually something
> else.
No. All 7b ASCII codepoints! ":" really *is* ':'...
> Doing something like 'ls | od -vtx1', or 'ls > list.txt' and examining
> 'list.txt' with a hex editor might enlighten us.
That was the point of:
C:\SfU\XXX> ls > foo
C:\SfU\XXX> cat foo
A'a A:a AAA A`a B?b C*c aaa foo
It gets weirder...
C:\SfU\XXX> dir /b
A'a
AAA
aaa
A`a
A?a
B?b
C?c
Note that "DOS" refuses to deal with the ':' and '*' characters and
transforms them into '?' (which one would assume it would ALSO refuse
to deal with!)
Note, also, the different sort orders (which each differ from Windows
Explorer's wacky rules).
>> The more interesting issue is how Windows handles these
>> files when you try to manipulate any of them. E.g.,
>> attempting to delete "AAA" will prompt you to delete "AAA"
>> and then "AAA" (aka "aaa")!
>
> That would be the result of Explorer using the SHFileOperation function,
> which internally uses a FindFirstFile/FindNextFile loop to support
> wildcards. This loop will interpret "aaa" as a pattern which matches
> "aaa" and "AAA".
Yes, what was unexpected was the fact that a *single* file entry
had been "selected" prior to invoking delete. I.e., their codebase
assumes a "selection" can be non-unique.
>> Unfortunately, the rules Windows (and Interix) seems to follow
>> aren't terribly obvious (on casual inspection).
>
> Which is precisely my argument against all this character set fiddling
> in a kernel :)
Think of how much spaghetti code they must have in each of these
"programs" ("commands")! I.e., if DIR sees a character in a name
that it doesn't like, it maps it to '?'. If Explorer sees a
character that it doesn't like (expect), it maps it to [box]
(unless that character is '*' which it maps to 'nil')
Sheesh! Talk about Principle of Least Surprise... :-/
Note, also, that "names" are processed differently depending on
where they are encountered in the command line. E.g.,
ls > File:List.txt
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Filesystem syntax constraints under Windows Don Y <this@is.not.me.com> - 2014-10-10 00:31 -0700
Re: Filesystem syntax constraints under Windows glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2014-10-10 09:06 +0000
Re: Filesystem syntax constraints under Windows David Brown <david.brown@hesbynett.no> - 2014-10-10 13:32 +0200
Re: Filesystem syntax constraints under Windows Don Y <this@is.not.me.com> - 2014-10-10 07:23 -0700
Re: Filesystem syntax constraints under Windows Don Y <this@is.not.me.com> - 2014-10-10 07:26 -0700
Re: Filesystem syntax constraints under Windows Dimiter_Popoff <dp@tgi-sci.com> - 2014-10-10 19:17 +0300
Re: Filesystem syntax constraints under Windows David Brown <david.brown@hesbynett.no> - 2014-10-10 19:12 +0200
Re: Filesystem syntax constraints under Windows Dimiter_Popoff <dp@tgi-sci.com> - 2014-10-10 20:34 +0300
Re: Filesystem syntax constraints under Windows Don Y <this@is.not.me.com> - 2014-10-10 11:32 -0700
Re: Filesystem syntax constraints under Windows Don Y <this@is.not.me.com> - 2014-10-10 10:53 -0700
Re: Filesystem syntax constraints under Windows Dimiter_Popoff <dp@tgi-sci.com> - 2014-10-10 21:24 +0300
Re: Filesystem syntax constraints under Windows Don Y <this@is.not.me.com> - 2014-10-10 13:36 -0700
Re: Filesystem syntax constraints under Windows Dimiter_Popoff <dp@tgi-sci.com> - 2014-10-11 00:18 +0300
Re: Filesystem syntax constraints under Windows Don Y <this@is.not.me.com> - 2014-10-10 15:28 -0700
Re: Filesystem syntax constraints under Windows Tonton Th <tTh@nowhere.invalid> - 2014-10-12 20:07 +0000
Re: Filesystem syntax constraints under Windows Don Y <this@is.not.me.com> - 2014-10-12 19:52 -0700
Re: Filesystem syntax constraints under Windows Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2014-10-10 21:15 +0200
Re: Filesystem syntax constraints under Windows Dimiter_Popoff <dp@tgi-sci.com> - 2014-10-10 23:04 +0300
Re: Filesystem syntax constraints under Windows Stefan Reuther <stefan.news@arcor.de> - 2014-10-11 11:28 +0200
Re: Filesystem syntax constraints under Windows Dimiter_Popoff <dp@tgi-sci.com> - 2014-10-11 17:13 +0300
Re: Filesystem syntax constraints under Windows David Brown <david.brown@hesbynett.no> - 2014-10-11 17:26 +0200
Re: Filesystem syntax constraints under Windows Dimiter_Popoff <dp@tgi-sci.com> - 2014-10-11 18:51 +0300
Re: Filesystem syntax constraints under Windows Stefan Reuther <stefan.news@arcor.de> - 2014-10-12 12:04 +0200
Re: Filesystem syntax constraints under Windows Dimiter_Popoff <dp@tgi-sci.com> - 2014-10-12 15:59 +0300
Re: Filesystem syntax constraints under Windows Don Y <this@is.not.me.com> - 2014-10-12 08:04 -0700
Re: Filesystem syntax constraints under Windows Dimiter_Popoff <dp@tgi-sci.com> - 2014-10-12 18:47 +0300
Re: Filesystem syntax constraints under Windows Don Y <this@is.not.me.com> - 2014-10-12 09:01 -0700
Re: Filesystem syntax constraints under Windows Don Y <this@is.not.me.com> - 2014-10-12 09:05 -0700
Re: Filesystem syntax constraints under Windows Dimiter_Popoff <dp@tgi-sci.com> - 2014-10-12 19:17 +0300
Re: Filesystem syntax constraints under Windows Stefan Reuther <stefan.news@arcor.de> - 2014-10-13 19:26 +0200
Re: Filesystem syntax constraints under Windows Dimiter_Popoff <dp@tgi-sci.com> - 2014-10-13 22:00 +0300
Re: Filesystem syntax constraints under Windows David Brown <david.brown@hesbynett.no> - 2014-10-14 10:25 +0200
Re: Filesystem syntax constraints under Windows Dimiter_Popoff <dp@tgi-sci.com> - 2014-10-14 13:28 +0300
Re: Filesystem syntax constraints under Windows David Brown <david.brown@hesbynett.no> - 2014-10-14 14:37 +0200
Re: Filesystem syntax constraints under Windows Dimiter_Popoff <dp@tgi-sci.com> - 2014-10-14 16:00 +0300
Re: Filesystem syntax constraints under Windows Don Y <this@is.not.me.com> - 2014-10-14 06:19 -0700
Re: Filesystem syntax constraints under Windows Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2014-10-15 19:57 +0200
Re: Filesystem syntax constraints under Windows Dimiter_Popoff <dp@tgi-sci.com> - 2014-10-16 00:06 +0300
Re: Filesystem syntax constraints under Windows Stefan Reuther <stefan.news@arcor.de> - 2014-10-16 18:16 +0200
Re: Filesystem syntax constraints under Windows Dimiter_Popoff <dp@tgi-sci.com> - 2014-10-16 20:49 +0300
Re: Filesystem syntax constraints under Windows Stefan Reuther <stefan.news@arcor.de> - 2014-10-14 18:59 +0200
Re: Filesystem syntax constraints under Windows Dimiter_Popoff <dp@tgi-sci.com> - 2014-10-14 21:39 +0300
Re: Filesystem syntax constraints under Windows David Brown <david.brown@hesbynett.no> - 2014-10-14 23:29 +0200
Re: Filesystem syntax constraints under Windows Dimiter_Popoff <dp@tgi-sci.com> - 2014-10-15 00:46 +0300
Re: Filesystem syntax constraints under Windows David Brown <david.brown@hesbynett.no> - 2014-10-15 01:38 +0200
Re: Filesystem syntax constraints under Windows David Brown <david.brown@hesbynett.no> - 2014-10-10 17:31 +0200
Re: Filesystem syntax constraints under Windows Don Y <this@is.not.me.com> - 2014-10-10 10:34 -0700
Re: Filesystem syntax constraints under Windows Don Y <this@is.not.me.com> - 2014-10-10 06:59 -0700
Re: Filesystem syntax constraints under Windows Stefan Reuther <stefan.news@arcor.de> - 2014-10-10 18:42 +0200
Re: Filesystem syntax constraints under Windows glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2014-10-10 19:00 +0000
Re: Filesystem syntax constraints under Windows Don Y <this@is.not.me.com> - 2014-10-10 13:43 -0700
Re: Filesystem syntax constraints under Windows upsidedown@downunder.com - 2014-10-11 11:06 +0300
Re: Filesystem syntax constraints under Windows Don Y <this@is.not.me.com> - 2014-10-11 01:35 -0700
Re: Filesystem syntax constraints under Windows Dimiter_Popoff <dp@tgi-sci.com> - 2014-10-11 17:24 +0300
Re: Filesystem syntax constraints under Windows David Brown <david.brown@hesbynett.no> - 2014-10-11 17:43 +0200
Re: Filesystem syntax constraints under Windows Stefan Reuther <stefan.news@arcor.de> - 2014-10-12 12:07 +0200
Re: Filesystem syntax constraints under Windows David Brown <david.brown@hesbynett.no> - 2014-10-12 23:41 +0200
Re: Filesystem syntax constraints under Windows Stefan Reuther <stefan.news@arcor.de> - 2014-10-13 19:14 +0200
Re: Filesystem syntax constraints under Windows David Brown <david.brown@hesbynett.no> - 2014-10-13 20:18 +0200
Re: Filesystem syntax constraints under Windows Mel Wilson <mwilson@the-wire.com> - 2014-10-15 18:43 +0000
Re: Filesystem syntax constraints under Windows David Brown <david.brown@hesbynett.no> - 2014-10-15 21:58 +0200
Re: Filesystem syntax constraints under Windows George Neuner <gneuner2@comcast.net> - 2014-10-15 23:55 -0400
Re: Filesystem syntax constraints under Windows Don Y <this@is.not.me.com> - 2014-10-20 09:45 -0700
Re: Filesystem syntax constraints under Windows Stefan Reuther <stefan.news@arcor.de> - 2014-10-21 18:47 +0200
Re: Filesystem syntax constraints under Windows Don Y <this@is.not.me.com> - 2014-10-21 15:38 -0700
Re: Filesystem syntax constraints under Windows Don Y <this@is.not.me.com> - 2014-10-21 17:51 -0700
Re: Filesystem syntax constraints under Windows George Neuner <gneuner2@comcast.net> - 2014-10-22 01:35 -0400
Re: Filesystem syntax constraints under Windows Don Y <this@is.not.me.com> - 2014-10-21 23:22 -0700
Re: Filesystem syntax constraints under Windows Stefan Reuther <stefan.news@arcor.de> - 2014-10-22 18:39 +0200
Re: Filesystem syntax constraints under Windows Don Y <this@is.not.me.com> - 2014-10-22 11:34 -0700
Re: Filesystem syntax constraints under Windows upsidedown@downunder.com - 2014-10-22 22:11 +0300
Re: Filesystem syntax constraints under Windows glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2014-10-23 00:20 +0000
Re: Filesystem syntax constraints under Windows George Neuner <gneuner2@comcast.net> - 2014-10-23 01:36 -0400
Re: Filesystem syntax constraints under Windows glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2014-10-23 09:08 +0000
Re: Filesystem syntax constraints under Windows George Neuner <gneuner2@comcast.net> - 2014-10-23 14:50 -0400
Re: Filesystem syntax constraints under Windows Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2014-10-23 21:42 +0200
Re: Filesystem syntax constraints under Windows Dimiter_Popoff <dp@tgi-sci.com> - 2014-10-22 01:21 +0300
Re: Filesystem syntax constraints under Windows Don Y <this@is.not.me.com> - 2014-10-21 15:51 -0700
Re: Filesystem syntax constraints under Windows glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2014-10-21 23:27 +0000
Re: Filesystem syntax constraints under Windows Don Y <this@is.not.me.com> - 2014-10-21 16:50 -0700
Re: Filesystem syntax constraints under Windows Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2014-10-22 21:00 +0200
Re: Filesystem syntax constraints under Windows upsidedown@downunder.com - 2014-10-22 22:54 +0300
Re: Filesystem syntax constraints under Windows Dimiter_Popoff <dp@tgi-sci.com> - 2014-10-22 02:32 +0300
Re: Filesystem syntax constraints under Windows Don Y <this@is.not.me.com> - 2014-10-21 17:21 -0700
Re: Filesystem syntax constraints under Windows Dimiter_Popoff <dp@tgi-sci.com> - 2014-10-22 03:52 +0300
Re: Filesystem syntax constraints under Windows Don Y <this@is.not.me.com> - 2014-10-21 21:13 -0700
Re: Filesystem syntax constraints under Windows David Brown <david.brown@hesbynett.no> - 2014-10-22 08:10 +0200
Re: Filesystem syntax constraints under Windows Dimiter_Popoff <dp@tgi-sci.com> - 2014-10-22 12:00 +0300
Re: Filesystem syntax constraints under Windows David Brown <david.brown@hesbynett.no> - 2014-10-22 13:11 +0200
Re: Filesystem syntax constraints under Windows Dimiter_Popoff <dp@tgi-sci.com> - 2014-10-22 15:19 +0300
Re: Filesystem syntax constraints under Windows David Brown <david.brown@hesbynett.no> - 2014-10-22 15:21 +0200
Re: Filesystem syntax constraints under Windows Dimiter_Popoff <dp@tgi-sci.com> - 2014-10-22 17:26 +0300
Re: Filesystem syntax constraints under Windows Stefan Reuther <stefan.news@arcor.de> - 2014-10-22 18:46 +0200
Re: Filesystem syntax constraints under Windows Dimiter_Popoff <dp@tgi-sci.com> - 2014-10-23 02:37 +0300
Re: Filesystem syntax constraints under Windows David Brown <david.brown@hesbynett.no> - 2014-10-22 23:09 +0200
Re: Filesystem syntax constraints under Windows Dimiter_Popoff <dp@tgi-sci.com> - 2014-10-23 03:06 +0300
Re: Filesystem syntax constraints under Windows David Brown <david.brown@hesbynett.no> - 2014-10-23 10:18 +0200
Re: Filesystem syntax constraints under Windows Dimiter_Popoff <dp@tgi-sci.com> - 2014-10-23 13:56 +0300
Re: Filesystem syntax constraints under Windows David Brown <david.brown@hesbynett.no> - 2014-10-23 15:59 +0200
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