CC Mode provides several hooks that you can use to customize the
mode for your coding style. The main hook is
c-mode-common-hook; typically, you’ll put the bulk of your
customizations here. In addition, each language mode has its own
hook, allowing you to fine tune your settings individually for the
different CC Mode languages, and there is a package initialization
hook. Finally, there is
c-special-indent-hook, which enables
you to solve anomalous indentation problems. It is described in
Other Special Indentations, not here. All these hooks adhere to the
standard Emacs conventions.
When you open a buffer, CC Mode first initializes it with the
currently active style (see Styles). Then it calls
c-mode-common-hook, and finally it calls the language-specific
hook. Thus, any style settings done in these hooks will override
those set by
Hook run only once per Emacs session, when CC Mode is initialized. This is a good place to change key bindings (or add new ones) in any of the CC Mode key maps. See Sample Init File.
Common hook across all languages. It’s run immediately before the language specific hook.
The language specific mode hooks. The appropriate one is run as the last thing when you enter that language mode.
Although these hooks are variables defined in CC Mode, you can give
them values before CC Mode’s code is loaded—indeed, this is the
only way to use
c-initialization-hook. Their values aren’t
overwritten when CC Mode gets loaded.
Here’s a simplified example of what you can add to your .emacs file to do things whenever any CC Mode language is edited. See the Emacs manuals for more information on customizing Emacs via hooks. See Sample Init File, for a more complete sample .emacs file.
(defun my-c-mode-common-hook () ;; my customizations for all of c-mode and related modes (no-case-fold-search) ) (add-hook 'c-mode-common-hook 'my-c-mode-common-hook)