GNU bug report logs - #24441
24.5; rename directory in dired to change case

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From: Ken Brown <kbrown <at> cornell.edu>
To: Paul Eggert <eggert <at> cs.ucla.edu>
Cc: Keith David Bershatsky <esq <at> lawlist.com>, Andreas Schwab <schwab <at> suse.de>, Brady Trainor <brady <at> bradyt.com>, Michael Albinus <michael.albinus <at> gmx.de>, 24441 <at> debbugs.gnu.org, Eli Zaretskii <eliz <at> gnu.org>
Subject: bug#24441: 24.5; rename directory in dired to change case
Date: Tue, 15 Nov 2016 14:59:12 -0500

On 11/14/2016 3:33 PM, Paul Eggert wrote:
> 1. Emacs seems to conflate whether a file system is case-sensitive, and
> whether it is case-preserving. Darwin pathconf distinguishes between
> _PC_CASE_SENSITIVE and _PC_CASE_PRESERVING. For example, perhaps the
> following code in dired-do-create-files:
>
>                (if (and (file-name-case-insensitive-p (car fn-list))
>                     (eq op-symbol 'move)
>                     dired-one-file
>
> should also check whether (car fn-list) is on a case-preserving file
> system (if not, there's no point going ahead, as the user can't change
> the case anyway). I suppose this would require adding a Lisp predicate
> for _PC_CASE_PRESERVING. (Possibly the MS-Windows code already deals
> with this, and Cygwin and macOS are currently broken.)

I'm not aware of any reported problems on non-case-preserving 
filesystems.  Unless someone reports such a problem, my inclination is 
to leave things as they are.

Ken

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