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bug#10085: 24.0.91; completion-pcm--find-all-completions returns wrong r
bug#10085: 24.0.91; completion-pcm--find-all-completions returns wrong remote file names
Sat, 31 Mar 2012 14:36:15 +0200
Gnus/5.13 (Gnus v5.13) Emacs/24.0.94 (gnu/linux)
Stefan Monnier <address@hidden> writes:
> Still trying to figure out what's really going on inside Tramp.
> Something I bumped into along the way (still doesn't quite explain it) is:
> (let ((non-essential t)) (file-name-nondirectory "/sudo:")) -> "sudo:"
> (let ((non-essential nil)) (file-name-nondirectory "/sudo:")) -> ""
> I think it's wrong for those two to return different values.
That's an error, and must be fixed, for sure. The correct result must be "".
I could apply a simple fix in `tramp-find-foreign-file-name-handler',
but this breaks other functionality. Grrrr.
I fear it will take some days, until I have puzzled it out.
> `non-essential' should prevent connecting to the remote host, but here
> neither operation needs to contact the remote host. And of course,
> things are made worse because it's not only `non-essential' that
> controls the behavior but also `last-input-event' which makes debugging
> that much more .... interesting.
Hmm, yes. This is a heuristic for older Emacsen, which don't give Tramp
a `non-essential' value. Maybe I shall change it, that in case
`non-essential' does exist, no other check is needed. But I don't know,
whether all completion packages outside core Emacs care about
`non-essential' already. We shall postpone this change to 24.2, at least.
Best regards, Michael.