Re: detecting charset of directories

[Kevin Rodgers]

Kenichi Handa wrote:
> In article <address@hidden>, Dan Jacobson <address@hidden> writes:
>
> > One can "set coding system for the next command" to dired a mounted
> > CDROM directory in the proper charset (big5 in my case). But the
> > moment one types g to refresh the dired, the dired is back in the
> > default charset.
>
> > So emacs is very clever in detecting the coding systems of files, but
> > not very cooperative for directories full of filenames all in a
> > particular coding system.
>
> Detecting a coding system of filenames in a directory is
> difficult to implement, but it won't be that difficult to
> respect a coding system explicitly specified by C-x C-m c
> for dired.  Perhaps, it can be done by locally setting
> file-name-coding-system of that buffer and making
> dired-revert to pay attention to that value.

`C-x C-m c' temporarily binds coding-system-for-read and
coding-system-for-write, so wouldn't it be more transparent to locally
set those variables (in dired-mode, where the other buffer-local
variables are set)?

Also, how can one ensure that `C-x m c CODING-SYSTEM g' will (1) have
its intended effect and (2) persist its effect, for subsequent `g'
commands?

> As I've never touch the code of dired.el, I'm not sure how
> such a change is safe.  So, shall I try it in
> emacs-unicode-2 branch?

--
Kevin