how to get the exhaustive list of auto completions while editing in .c or .cpp file.

how to get the exhaustive list of auto completions while editing in .c or .cpp file.

[Anand S. Dhankshirur]

I have one more question
GVIM, provides the auto completions with the exhaustive list of all the 
possibilities.
while typing in .c file
(for example GS_AM_ will give all the auto completions for all the 
tokens strating with GS_AM.)
In emacs also M-/ gives the completions which are there in current buffer.
Furhter it gives the case insensitive one.(the cases are ignored).
But it will not give the completions from the TAGS file
It does not consider other files and buffers.
Is there any way to do it in emacs.?

Re: how to get the exhaustive list of auto completions while editing in .c or .cpp file.

[Nordlöw]

On 20 Nov, 04:55, "Anand S. Dhankshirur" <a...@cdotb.ernet.in> wrote:
> I have one more question
> GVIM, provides the auto completions with the exhaustive list of all the
> possibilities.
> while typing in .c file
> (for example GS_AM_ will give all the auto completions for all the
> tokens strating with GS_AM.)
> In emacs also M-/ gives the completions which are there in current buffer.
> Furhter it gives the case insensitive one.(the cases are ignored).
> But it will not give the completions from the TAGS file
> It does not consider other files and buffers.
> Is there any way to do it in emacs.?

Add the following to .emacs
(provide 'hippie-exp)

And the customize the variable hippie-expand-try-functions-list like
for example
(setq hippie-expand-try-functions-list
      '(try-expand-dabbrev-visible  ;from visible parts of all windows
        try-expand-dabbrev          ;from current buffer
        try-expand-dabbrev-all-buffers  ;from all other buffers
        try-expand-tag                  ;Note: Expand from "TAGS"
table.
      )

Then finally do
M-x hippie-expand

/Nordlöw