Re: File name completion with non-ascii filenames

[Eli Zaretskii]

On Tue, 25 Dec 2001, Kenichi Handa wrote:

> Ah, yes, that is a good idea.  In C code, we can use
> Ffind_coding_systems_region to get a list of coding systems
> that can encode FILE.
> 
> If `base coding system' of file-name-coding-system is not
> included in the returned list, we can return nil.
> 
> Otherwise, we can use the current method.

This still leaves the issue of downcasing the encoded file name.  The 
situation that bothers me is this: suppose the user's language 
environment is Latin-1, but file-name-coding-system is Latin-2 or one of 
the cpNNN.  Will the DOWNCASE macro DTRT with the encoded file name in 
this case?