Re: Emacs contributions, C and Lisp

[Dmitry Gutov <dgutov@yandex.ru>]

On 20.02.2014 20:13, Richard Stallman wrote:
>      Richard, have you tried discussing this with GCC developers recently?
>
> I don't follow you.  What exactly is it you suggest I discuss with
> them?  I can discuss things with them, but to do so usefully I need
> to know what issue to raise.

You could discuss adding code completion, as a core GCC feature, or as 
an actively maintained plugin.

Basically, you'd be able to call GCC with a certain argument, pass it 
the path to a file, line and column within it, and GCC would output a 
list of possible completions at that point (with some type information: 
e.g. if a completion is a function, it would include the arglist and the 
return type).

It should also support receiving the contents of the file from stdin, 
because this way the buffer doesn't have to be saved, for code 
completion to work. Clang supports that.

I couldn't find any real documentation for the format of the Clang 
completion output, but you can see some examples at the beginning of 
this page of this random forum thread: 
http://forums.codeblocks.org/index.php?topic=13559.15

>      Considering your distaste for Clang, this page should look pretty
>      embarrassing: http://gcc.gnu.org/wiki/CodeCompletion
>
> I looked at it and saw no obvious point.  However, I did not follow
> the links because that would have taken me another day.

No need. My point is, the wiki of the official GCC website "promotes" 
Clang because GCC itself lacks the respective feature.