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bug#9134: don't force mystery on user trying to find out what is complet


From: jidanni
Subject: bug#9134: don't force mystery on user trying to find out what is completing after the word "ssh" in *shell*
Date: Thu, 21 Jul 2011 07:49:11 +0800

When we hit TAB in *shell* after the word "ssh",

* there are no messages about where in the world it is getting its
  completions. Unlike dabbrev-expand.

* C-h k TAB reveals nothing good about what is going on.

(rzgrep "ssh" "*.gz" "/usr/share/emacs/24.0.50/lisp/" nil "find . <X>
-type f <F> -exec zgrep <C> -nH -e <R> {} +") reveals

./net/tramp-sh.el.gz:423:    (tramp-parse-sconfig     "~/.ssh/config")

but C-h e shows that wasn't loaded.

Same with

./pcmpl-unix.el.gz:42:This allows one method of completion of SSH host names, 
the other

TRY IT YOURSELF:

$ emacs -Q -f shell
$ ssh C-h TAB
to try to find out where in the world it is getting its completions.

It won't tell you but I found it is in .ssh/config at least for me.
So there should be instructions RIGHT THERE at C-h k TAB
saying how to alter/turn off this.
E.G. if one wants to add a host, how is one supposed to put it into the
comments in that file, or .emacs.

>>>>> "SM" == Stefan Monnier <address@hidden> writes:
>> Recently in M-x shell,

SM> I guess "recently" means "using Emacs Bzr trunk".

$ apt-cache policy $@
emacs-snapshot:
  Installed: 1:20110705-1

>> after
>> $ ssh
>> completion becomes different.

SM> Right, it's done according to pcomplete/ssh.

Well all the user knows is he hits C-h k TAB and sees no obvious clue.

>> Either tell me a way to turn this bonus feature off.

SM> I think that (defun pcomplete/ssh () nil) should do the trick.

>> Or tell me a way to add my favorite hosts to a list that it is trying to
>> complete.

SM> Look at the source code of pcomplete/ssh to see how that list is built.

Gobbledygook to we the average user.

SM> Basically, adding hosts in your .ssh/config or .ssh/known_hosts should
SM> do the trick.

OK, by trial and error I found putting "empty entries" there in .ssh/config

Host jidanni.org #for emacs -f shell completion

worked. However the user hitting C-h k TAB won't figure that out and
will need to write in for help.





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