Hello,
    It seems that simply adding info files to the INFOPATH directories is
not enough for the info node to show up by C-h i m auctex and we need to
modify some file to let emacs know there is a new info file. I confirm this
by cheating emacs by renaming the auctex.info-1 to the name of an existing
info file which can be display correctly by C-h i(for example, ada-mode).
If I do that, I can see the info of auctex under the original node's name
(eg. Ada-mode). So when a package is installed, which file does it modify to
let emacs know a new info filed needed to be added? Thanks.

On Sat, Sep 10, 2011 at 5:32 PM, Shiyuan <gshy2014@gmail.com> wrote:

>
>
> On Sat, Sep 10, 2011 at 11:51 AM, suvayu ali <fatkasuvayu+linux@gmail.com>wrote:
>
>> On Sat, Sep 10, 2011 at 5:14 PM, Shiyuan <gshy2014@gmail.com> wrote:
>> >>(add-to-list 'Info-default-directory-list
>> >>
>> >>             >(expand-file-name "/opt/share/info"))
>> >>
>> > According to http://www.emacswiki.org/emacs/InfoPath,
>> > Info-default-directory-list will not be used if INFOPATH is defined but
>> > Info-directory-list should always be defined and used. But How comes I
>> > cannot see it?  Thanks.
>>
>> Then try something like this very early in your init file instead:
>>
>> (setenv "INFOPATH" "/opt/share/info:$INFOPATH" t)
>>
> By adding this line,  the correct location of the info files are in the
> Info-directory-list. However, I sill could not find the node AUCTeX under
> emacs info mode.  And it cannot be located by C-h i m auctex. Is it hidding
> deep down some other nodes. But I can see the info by using the linux
> command line: info auctex.
> Thanks.
>
>