bug#4151: non-utf locale leads to errors in `decode-coding-region' (dired)

bug#4151: non-utf locale leads to errors in `decode-coding-region' (dired)

[David Reitter]

With

export LANG=de_DE.ISO8859-15

on a Mac (NS port), and a directory that contains a folder named  
"Tätää"(i.e. a German umlaut), viewing the directory with `dired'  
fails with an error message.  The trace is below.

The bugs here are
1. `decode-coding-region' signals an error (it is not documented to do  
so)
2. with this locale, "ls -la" will not output utf-8-nfd, even though  
it seems that we expect this.




Debugger entered--Lisp error: (wrong-type-argument wholenump nil)
   decode-coding-region(1 8177 utf-8-nfd)
   insert-directory("/Users/dr/" "-al" nil t)
   dired-insert-directory("/Users/dr/" "-al" nil nil t)
   dired-readin-insert()
   dired-readin()
   dired-internal-noselect("~/" nil)
   dired-noselect("~/")
   run-hook-with-args-until-success(dired-noselect "~/")
   find-file-noselect("~/" nil nil t)

bug#4151: non-utf locale leads to errors in `decode-coding-region' (dired)

[Eli Zaretskii]

> From: David Reitter <david.reitter@gmail.com>
> Date: Sat, 15 Aug 2009 08:10:32 -0400
> Cc: 
> 
> With
> 
> export LANG=de_DE.ISO8859-15
> 
> on a Mac (NS port), and a directory that contains a folder named  
> "Tätää"(i.e. a German umlaut), viewing the directory with `dired'  
> fails with an error message.  The trace is below.
> 
> The bugs here are
> 1. `decode-coding-region' signals an error (it is not documented to do  
> so)
> 2. with this locale, "ls -la" will not output utf-8-nfd, even though  
> it seems that we expect this.

Thanks for the report, but please use report-emacs-bug to do that, or
copy the necessary information it provides to whatever MUA you use to
send.  In this case, essential information about your Emacs version
and date of build is missing.

bug#4151: non-utf locale leads to errors in `decode-coding-region' (dired)

[Kenichi Handa]

In article <14BCF4EE-ACCD-401B-8072-24112978DCBD@gmail.com>, David Reitter <david.reitter@gmail.com> writes:

> With
> export LANG=de_DE.ISO8859-15

> on a Mac (NS port), and a directory that contains a folder named  
> "Tätää"(i.e. a German umlaut), viewing the directory with `dired'  
> fails with an error message.  The trace is below.

> The bugs here are
> 1. `decode-coding-region' signals an error (it is not documented to do  
> so)

I think it's a bug of ns-utf8-nfd-post-read-conversion that
is set for :post-read-conversion of utf-8-nfd.  Anyone who
wrote it please work on this bug.

> 2. with this locale, "ls -la" will not output utf-8-nfd, even though  
> it seems that we expect this.

Please find why default-file-name-coding-system (or
file-name-coding-system) is set to ntf-8-nfd.

---
Kenichi Handa
handa@m17n.org

bug#4151: non-utf locale leads to errors in `decode-coding-region' (dired)

[Alan Third]

David Reitter <david.reitter@gmail.com> writes:

> With
>
> export LANG=de_DE.ISO8859-15
>
> on a Mac (NS port), and a directory that contains a folder named
> "Tätää"(i.e. a German umlaut), viewing the directory with `dired'
> fails with an error message.  The trace is below.
>
> The bugs here are
> 1. `decode-coding-region' signals an error (it is not documented to do
> so)
> 2. with this locale, "ls -la" will not output utf-8-nfd, even though
> it seems that we expect this.

Hi, I can't reproduce this with Emacs 25. Are you still seeing this
problem with a recent build?

-- 
Alan Third

bug#4151: non-utf locale leads to errors in `decode-coding-region' (dired)

[David Reitter]

On Feb 11, 2016, at 3:45 PM, Alan Third <alan@idiocy.org> wrote:
> 
> Hi, I can't reproduce this with Emacs 25. Are you still seeing this
> problem with a recent build?

I do not.  It seems to have been fixed.

Thanks for checking on it.  Closing the bug.

bug#4151: non-utf locale leads to errors in `decode-coding-region' (dired)

[Eli Zaretskii]

> From: Alan Third <alan@idiocy.org>
> Date: Thu, 11 Feb 2016 20:45:47 +0000
> Cc: 4151@debbugs.gnu.org
> 
> David Reitter <david.reitter@gmail.com> writes:
> 
> > With
> >
> > export LANG=de_DE.ISO8859-15
> >
> > on a Mac (NS port), and a directory that contains a folder named
> > "Tätää"(i.e. a German umlaut), viewing the directory with `dired'
> > fails with an error message.  The trace is below.
> >
> > The bugs here are
> > 1. `decode-coding-region' signals an error (it is not documented to do
> > so)
> > 2. with this locale, "ls -la" will not output utf-8-nfd, even though
> > it seems that we expect this.
> 
> Hi, I can't reproduce this with Emacs 25. Are you still seeing this
> problem with a recent build?

I think this was fixed by the recent changes in the way we decode file
names and list directories on OS X HFS filesystems.