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Document MS-Windows file-name idiosyncrasies (Bug#19463)

doc/emacs/msdog.texi (Windows Files): Document characters invalid in
 Windows file names.
This commit is contained in:
Eli Zaretskii 2015-01-31 18:32:11 +02:00
parent f3faf4f027
commit 017a03afc9
2 changed files with 39 additions and 1 deletions

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@ -1,5 +1,8 @@
2015-01-31 Eli Zaretskii <eliz@gnu.org>
* msdog.texi (Windows Files): Document characters invalid in
Windows file names. (Bug#19463)
* custom.texi (Customization Groups): Update the looks of the
Customize Group buffer.

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@ -249,7 +249,42 @@ removable and remote volumes, where this could potentially slow down
Dired and other related features. The value of @code{nil} means never
issue those system calls. Non-@code{nil} values are more useful on
NTFS volumes, which support hard links and file security, than on FAT,
FAT32, and XFAT volumes.
FAT32, and exFAT volumes.
@cindex file names, invalid characters on MS-Windows
Unlike Unix, MS-Windows file systems restrict the set of characters
that can be used in a file name. The following characters are not
allowed:
@itemize @bullet
@item
Shell redirection symbols @samp{<}, @samp{>}, and @samp{|}.
@item
Colon @samp{:} (except after the drive letter).
@item
Forward slash @samp{/} and backslash @samp{\} (except as directory
separators).
@item
Wildcard characters @samp{*} and @samp{?}.
@item
Control characters whose codepoints are 1 through 31 decimal. In
particular, newlines in file names are not allowed.
@item
The null character, whose codepoint is zero (this limitation exists on
Unix filesystems as well).
@end itemize
@noindent
In addition, referencing any file whose name matches a DOS character
device, such as @file{NUL} or @file{LPT1} or @file{PRN} or @file{CON},
with or without any file-name extension, will always resolve to those
character devices, in any directory. Therefore, only use such file
names when you want to use the corresponding character device.
@node ls in Lisp
@section Emulation of @code{ls} on MS-Windows