Emacs code completion for C/C++? [closed]

Answer 1

CEDET is just great, certainly needs some time at the beginning but worth it though.

Answer 2

to be honest for i like plain old dabbrev-expand (M-/), yes it doesn't use any contextual information other than what characters are adjacent in the open buffers, but on the plus side it doesn't use any contextual information ;) this means you can complete from text you have written first in tests or comments.

for other options http://www.emacswiki.org/emacs/CategoryCompletion

Answer 3

GCCSense

From the author of Auto Complete Mode. It uses gcc to find candidates for code completion as the name suggests.

Answer 4

I tend to use etags.

For emacs integration: http://www.gnu.org/software/emacs/emacs-lisp-intro/html_node/etags.html

For how to run etags. http://www.delorie.com/gnu/docs/emacs/etags.1.html

As a bonus, this blog post describes a bit more emacs setup and how to use etags. http://tulrich.com/geekstuff/emacs.html

Edit: To answer the comment, after runnning etags across your code, you can complete words with C-x t(that's what it's bound to on my machine.) Or you can call the tag-search method.

Answer 5

You can try company-mode. It's a multi-backend in-buffer completion mechanism.
Watch the screencast to get an idea of how it works.

Some of the back-ends are:

• CEDET Semantic
• dabbrev
• XCode
• PySmell
• Ropemacs
• GNU Global

And it's also available via ELPA.

Answer 6

You could also use an autocomplete plugin for clang as long as your source compiles with it. links:

• https://github.com/Golevka/emacs-clang-complete-async
• https://github.com/brianjcj/auto-complete-clang
• https://github.com/mikeandmore/auto-complete-clang or
• the mode which is included in the clang-source: http://llvm.org/svn/llvm-project/cfe/trunk/utils/clang-completion-mode.el