On 26 November 2016 at 18:29, Ken Brown <kbrown@cornell.edu> wrote:

> On 11/26/2016 12:54 PM, Reuben Thomas wrote:
>
>> Sounds like a good compromise.  I agree about the default, except that
>>> it should default to case-insensitive matches on case-insensitive
>>> filesystems (Windows etc.)
>>>
>> I have now implemented this (apologies for the delay). I attach revised
>> patches.
>>
>
> As of commit 2809012 we have a new primitive,
> file-name-case-insensitive-p, that can be used to determine whether or not
> a filesystem is case insensitive.  This is better than relying on system
> type.  For example, on both Cygwin and macOS, it's possible that some
> filesystems are case-insensitive and others aren't.


​Thanks for the heads up, that's great news! It bothered me that there was
no easy way to do this previously.

​I updated my patch so that dired-omit-case-fold is now a three-valued
variable which defaults to 'filesystem, and a helper function that checks
(filename-case-sensitive-p dired-directory) when this value is used.

I've added info and NEWS documentation for dired-omit-case-fold.

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