Re: ange-ftp-get-files is not updating his cache

[Thierry Volpiatto]

Michael Albinus <address@hidden> writes:

> Thierry Volpiatto <address@hidden> writes:
>
>> Hi Michael,
>
> Hi Thierry,
>
>>> I've committed a patch to Emacs' trunk. Finally, it was just one place I
>>> had to adjust the cache, the copy case. Removing a file shall work
>>> already w/o cache problems.
>>>
>>> Could you, please, test?
>> Yes it is working,
>
> Good.
>
>> however I think it is also a workaround, what when the ftp directory
>> is modified from someone with another Emacs or some external program?
>> The hash table will not be updated and the command
>> `ange-ftp-reread-dir' doesn't help because it is broken (It is not
>> aware of user, password etc...).  I think it is non sense to cache the
>> ls result in a hash-table, of course it is faster, but the contents of
>> a directory (ftp or not) is meant to be always changed.  Imagine how
>> unuseful would be an implementation of `directory-files' with caching
>> result in a hash-table and refering to this table at each further
>> calls...
>
> I haven't added caches to ange-ftp, but I believe they have their
> reason. On slow lines, they could make the life easier.
>
> Stale caches bite, of course. But how often does this happen? IIRC, an
> ftp connection times out, after 15' or so. And if the connection is
> reestablished due to a new request from Emacs side, the whole cache
> shall be cleaned, of course. I haven't checked, but I would expect this.
Didn't fully check this but I am not sure it is cleaned.

> So I won't do anything else. If you believe there are more bugs in
> ange-ftp.el (you've mentioned `ange-ftp-reread-dir', for example),
> please file a bug report for Emacs.
Ok.

Thanks.

-- 
  Thierry
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