From:	Stefano Brozzi <brozzis AT mag00 DOT cedi DOT unipr DOT it>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Emacs and various problems
Date:	Thu, 20 Nov 1997 11:14:12 +0100
Organization:	Cineca
Lines:	45
Message-ID:	<34740D74.2333@mag00.cedi.unipr.it>
References:	<3472F197 DOT 658C AT mag00 DOT cedi DOT unipr DOT it> <347488AB DOT 5924 AT cs DOT com>
NNTP-Posting-Host:	bunny.cedi.unipr.it
Mime-Version:	1.0
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

John M. Aldrich wrote:
> 
> You want a context-sensitive libc lookup, right?  The code I use for
> this is:
> 
> ;;; Automatic online help for library functions
> (autoload 'find-tag-tag "etags")
> (autoload 'Info-find-node "info")
> (defun libc-help (arg)
>   (interactive (list (find-tag-tag "C library topic: ")))
>   (Info-find-node "libc" arg))
> ;
> 
> Then I map the function to C-f1 with:
> 
>     (define-key c-mode-map [C-f1] 'libc-help)
> 
> This seems to be a lot simpler than whatever you are doing...
> 

the context sensitive lookup is already bound to  C-h TAB
it is defined in file info-look.el. It reads the current major-mode
and do specific action based upon that mode.
It automatically understands C, texinfo, makefile and others.
However c-mode has a problem: it looks in the info file for
nodes that in the djgpp libc info are not present.
I guess in other systems libc.info are different (or I'm missing
something).
At this point I've two chances:
change the regexps that do the lookup in the emacslisp file
	(not reliable)
or
change the libc.info to reflect what emacs expects.
	(better idea)
(or 
I'm still missing something)
Sadly, I wasn't unable to find out a libc.info in my linux
box or on this Solaris, so I've not an example to comfort my
guesses.

However, thanks for your code, I'll put in my _emacs,
hoping however it's a temporary solution.

	bye
	Stefano

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